Innovación en catalytic hydrogenation : Oportu...

O-499Environmental and Industrial Applications of Catalysis / España 1595

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Extracción de nitratos y nitritos del agua mediante una tecnología de hidrogenación catalítica selectiva

nitrates, Water, drinking water, catalysis, nitrites, potable water, catalytic hydrogenation
- Descripción de la oferta tecnológica :
  
  Tecnología innovadora desarrollada en la Universidad de Tarragona capaz de eliminar los nitratos y nitritos del agua, para conseguir agua potable (valores deseados de nitratos <50 ppm). La eliminación de nitratos se consigue mediante una reacción catalítica que convierte los nitratos y nitritos en nitrógeno gaseoso en un solo paso utilizando el hidrógeno gas como reactivo. La reacción se produce en un reactor catalítico proporcionado por APLICAT que funciona en un modo continuo. Los productos son nitrógeno gas y agua potable
  
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  The chemical formula of the catalyst designed by the researchers of the Rovira i Virgili University, is the key of the process, therefore is protected and commercialized by APLICAT. Winner of the enviromental award of the Catalan Government at 2006
  
  Two semi industrilal plants are constructed and working in two towns of Tarragona, obtaining concentrations of nitrates lower than 20ppm.
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O-935Institute of Chemical Research of Catalonia (ICIQ) / España 717

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Nuevo soporte de nanopartículas de rutenio como catalizadores altamente eficientes para la hidrogenación de compuestos aromáticos: en busca de licencia y / o socio de desarrollo conjunto

ruthenium nanoparticles, catalysts, hydrogenation of aromatics, fragrances, flavors, benzene hydrogenation, hydrogenation of phthalates, aromatics
- Descripción de la oferta tecnológica :
  
  Hemos desarrollado un catalizador heterogéneo altamente activo y estable que consiste en nanopartículas de rutenio estabilizadas con ligandos de fosfina incrustados en un soporte sólido. Este catalizador es estable en aire, fácil de preparar, y es muy activo en la reacción de hidrogenación de compuestos aromáticos en condiciones suaves. Estamos buscando socios para el desarrollo conjunto y / o licenciatario.
  
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  The offered catalyst has the advantage of being easily prepared and of being one of the most active and stable reported to date. Hydrogenation of aromatics can be operated under mild conditions and under solvent free conditions, thereby rendering the process more sustainable and easy to implement. The catalyst can also be recycled at least 10 times without significant loss of activity, which makes it attractive for continuous flow applications. Leer más
O-1029AMIC, Environmental and Industrial Applications of Catalysis / España 763

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Hidrohal, deshalogenación (hidrodeclorinación catalítica selectiva)

dehalogenation, catalytic hidrodechlorination, decontamination of effluents, clean technology, catalytic technology, chemicals, petrochemicals, fine chemicals, chemical engineer
- Descripción de la oferta tecnológica :
  
  Innovadora tecnología apropiada para la descontaminación de efluentes con compuestos halógenos orgánicos.
  La reacción catalítica, hidrodecloración selectiva, consiste en la reacción de compuestos orgánicos halogenados con hidrógeno en un reactor catalítico. Es una tecnología limpia que utiliza hidrógeno como reactivo y no se generan residuos.
  
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  The catalytic technology allows you to break up the organic compound from the halogen, obtaining the hidrur HX, which has a lower toxicity than the halogenated organic compound.
  The chemical formula of the catalyst designed by the researchers of the Rovira i Virgili University, is the key of the process. Leer más
O-477AMIC, Environmental and Industrial Applications of Catalysis / España 2777

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Tratamiento catalítico de aguas residuales para la eliminación de materia orgánica

Organic matter remowal, wastewater treatment, catalytic technologies, innovative, Oxidation process
- Descripción de la oferta tecnológica :
  
  HIDROMAT (Catalytic Wet Air Oxidation Process) es una tecnología basada en la eliminación de compuestos orgánicos recalcitrantes mediante una reacción catalítica, donde los contaminantes son transformados en productos inocuos o reutilizables, lo que resulta en productos con mayor valor añadido.
  
  La reacción tiene lugar en un reactor catalítico en fase de vapor, donde los contaminantes orgánicos se transforman en dióxido de carbono y agua destilada después de una reacción exotérmica: CnHm + O2 -> CO2 + H2O + Q
  
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  The catalytic technology allows you to remove high concentrations of COD (40.000-200.000ppm) at atmospheric pressure.
  
  All kind of organic compunds are removed (biodegradable and non biodegradable ones).
  
  The catalyst life is around 2-3 years. It is an exothermic process, so the energy needed for the process is just for the start up. The process works at 250-350ºC. Leer más
O-1030AMIC, Environmental and Industrial Applications of Catalysis / España 1724

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Hidracot, eliminación de materia orgánica (oxidación avanzada catalítica, DQO <5,000 ppm)

catalytic advanced oxidation, catalytic oxidation, organic matter removal, Water, catalytic reactions, effluents, industrial effluent treatment, wastewater, sewage
- Descripción de la oferta tecnológica :
  
  La fórmula química del catalizador diseñado por los investigadores de la Universidad Rovira i Virgili, es la clave del proceso.
  
  La reacción se lleva a cabo en fase líquida en un reactor catalítico, donde el agua contaminada y el peróxido de hidrógeno reaccionan con el ozono, obteniendo agua potable y CO2 como productos.
  El peróxido de hidrógeno se genera in situ en el reactor catalítico por reacción directa entre el oxígeno y el hidrógeno evitando los riesgos de manipulación del operador.
  
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  Catalytic Advanced Oxidation technology removes the organic matter at atmospheric pressure and mild reaction temperatures (< 60 ºC) getting clean and reusable water.
  
  It is a simple process that uses very mild operating conditions and does not require complex systems.
  
  It is a clean technology, and does not generate waste or by-products, with low power consumption and small space requirements compared to biological treatments.
  
  The organic pollutants are oxidized to CO2 gas obtaining conversion values around 99%. Leer más
O-672University of Alicante / España 1291

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Trampa catalítica "No-Noble-metal" para eliminar hidrocarburos, emisiones de NOx y CO de motores de combustión

Chemistry, Catalyst, catalysis, combustion, NOX, HC, CO, exhaust, gas, stream, zeolite, trap.
- Descripción de la oferta tecnológica :
  
  El grupo de investigación ha desarrollado una trampa catalítico basada en un material adsorbente para disminuir las emisiones de HC en los gases de escape de motores de combustión interna, y especialmente, para minimizar las emisiones de estos compuestos durante el arranque del motor en frío. Este sistema está libre de metales nobles e incluye una o varias capas de un tamiz molecular que contiene uno o varios metales de transición (Cu, Fe, Zn, Co o Ni).
  
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  Basically, the catalytic trap bed is composed of a zeolite with a Si/Al ratio between 10 and 20. The zeolite is partially interchanged with cations of one or several non-noble metals. In order to achieve an optimum performance of the catalytic trap, these metals should be interchanged in the internal zeolite structure, and never on its external surface. In this way, the outflow of the exhaust gases passes through the catalytic trap bed to adsorb the HC at low temperatures.
  
  The material has been developed at laboratory scale. Different compositions of this material have been tested with simulated streams of internal combustion engines (cold starts). As a result, the material is able to reduce HC emissions in internal combustion engines operating with both mixtures almost stoichiometric and low fuel mixtures.
  
  The main difference between this invention and other existing materials is that this catalytic trap avoids any element or additional layer composed of an oxidation catalyst based on noble metals. Consequently, HC emissions could be totally removed through a single bed without using high-cost materials (noble metals) or further stream treatments. This fact allows the catalytic trap to be placed in any position according to the different control systems employed for decreasing other pollutant emissions existing in the gases stream, since the total elimination of HC takes place on the catalytic trap.
  
  Thus, this technology development results in a solid material where coexists metal(s) and protons in an optimum ratio inside of the zeolite channels, leading to a system that can act as a HC trap and as an oxidation catalyst in only a single bed, during the whole cold start cycle.
  
  The main innovative aspect of this catalytic trap is that the adsorbent material can capture the hydrocarbons in the cold start of the engine and oxidize gases during its warmed-up operating conditions without using noble metals, which are frequently used as oxidation catalyst.
  At high temperatures, this material is able to carry out total oxidation of both hydrocarbons retained by the catalytic trap and those present in the exhaust gas stream. Consequently, the resulting gas stream released to the atmosphere is innocuous in hydrocarbons.
  
  • Noble metals are not used.
  
  • Structural advantages, since the control systems are simplified and pollutants in internal combustion engines are reduced.
  
  • Economic benefits (The price of noble metal is approximately 100 times more expensive than the materials employed by the researchers).
  
  • The catalytic trap can be placed in any position with regard to different control systems.
  
  • Besides its hydrocarbon trapping role, the system can also act as oxidation catalyst during the cold-start cycle. Leer más
O-931empresa anónima / España 840

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Nuevo método de obtención de alcaloides derivados de cinchona útiles como catalizadores: en busca de licencia

cinchona, alkaloid, cinchona alkaloid derivatives, Catalyst, catalysts, quinine, quinidine, chiral building blocks, active ingredients, metal free catalysis, cascade reactions, catalytic, building block, chemical libraries, chiral synthesis
- Descripción de la oferta tecnológica :
  
  Un buen conocido instituto de investigación español busca distribuidores, fabricantes y / o licenciatarios de un nuevo proceso de obtención de una familia de derivados de alcaloides de cinchona que llevan un grupo amino primario. La síntesis divergente desarrollada permite preparar hasta un máximo de ocho compuestos diferentes de quinina y quinidina fácilmente disponibles. Estos compuestos son catalizadores útiles en la catálisis enamina / imina que se realiza en enolizables materias primas y son altamente selectivos.
  
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  Chiral building blocks are currently used in the manufacture of active ingredients for the pharmaceutical and agrochemical industry. A powerful approach to achieve molecular complexity from small building blocks relies on the use of cascade processes catalyzed by amine containing scaffolds such as proline and cinchona alkaloid derivatives. The catalytic activity and potential of chiral induction of an amine catalyst can be finely tuned by small structural modifications.
  
  The developed divergent synthesis advantageously starts from quinine or quinidine and allows for the preparation of up to eight different compounds bearing a free amino group with small structural modifications. Access to both pseudo-enantiomeric pairs of currently available compounds is granted thanks to this route. The structural differences in the compounds allows for tackling subtle polarity effects and for a fast catalyst screening. Leer más
O-474University of Alicante / España 964

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Nuevo catalizador que elimina de forma eficiente compuestos orgánicos volátiles clorados en corrientes gaseosas.

Organic compounds, environment research, gas streams, catalysts, dichloroethane, PVC, plastics
- Descripción de la oferta tecnológica :
  
  El grupo de investigación Materiales Carbonosos y Medioambiente de la Universidad de Alicante ha desarrollado un novedoso catalizador que permite eliminar de forma eficiente compuestos orgánicos volátiles clorados (especialmente el 1,2-dicloroetano, tóxico y ampliamente utilizado en distintos procesos industriales) en corrientes gaseosas a temperaturas de trabajo comprendidas entre 250-500 ºC. Estos nuevos catalizadores (óxidos mixtos de cerio-praseodimio) se caracterizan porque tienen un bajo coste de fabricación y son muy activos y estables en el tiempo, ya que no sufren una desactivación catalítica significativa (a diferencia de los catalizadores utilizados en la actualidad). Se trata por tanto de una novedosa tecnología con posibilidades de comercialización a nivel internacional. El grupo de investigación busca empresas interesadas en adquirir esta tecnología para su explotación comercial.
  
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  The new mixed oxide catalyst of cerium-praseodymium (CexPr1-XO2) allow the efficient combustion of chlorinated volatile organic compounds (especially 1,2-dichloroethane).
  
  These new catalytic systems are able to work in gas streams at temperatures between 250-500 º C in an dynamic and continuous way without suffering a significant deactivation process.
  
  In recent years, environmental legislation has restricted the air emissions permissible levels, and particularly the emission of volatile organic compounds (VOCs) harmful for both the environment and human health
  
  There is a wide variety of VOCs, of different chemical nature (aliphatic, aromatic, oxygenated and halogenated compounds) and consequence of different emission sources (waste gases from chemical plants, soil and water decontamination, solvents evaporation , etc..), but 1,2-dichloroethane (DCE, C2H4Cl2) is the most lasting, dangerous and commonly used in industry (used, for example, massively in the process of polyvinyl chloride production and consequently chemical plants produce significant amounts of waste that require efficient treatment).
  
  Until a few years ago, VOCs were usually eliminated by thermal incineration. However, new legislation on VOC emissions has originated significant improvements on treatment technologies. This is the case of the catalytic oxidation that in recent years has shown its ability to destroy VOCs at temperatures below those used in thermal incineration and has also produced a significant reduction of secondary pollutants (nitrogen oxides).
  
  Currently, catalytic oxidation processes require heating large gas flows that contain a small amount of VOCs and put the gas in contact with solid catalysts that can either be
  • Those containing noble metals as active phase: they have a excellent oxidation efficiency, although their cost is very high and gradually lose their activity with the presence of chlorine in the reaction mixture.
  
  • Those containing transition metals: they have a lower cost and are more stable and durable, although less active than those containing noble metals. Leer más
O-934Institute of Chemical Research of Catalonia (ICIQ) / España 868

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Nuevo proceso de obtención de hydrofuroin quiral a partir de furfural: se buscan socios para el desarrollo conjunto y / o licenciatarios

chiral hydrofuroin, Furfural, biomass, chiral hydrofuroin, polymers, liquid crystals, chiral polymers polyurethanes, polyesters, polyethers, polycarbonates, chiral ligands
- Descripción de la oferta tecnológica :
  
  Se ha desarrollado un proceso que permite la obtención de un 1,2-diol quiral, hydrofuroin, derivado de furfural. El proceso es altamente selectivo y de alto rendimiento. Se busca un socio industrial (PYME o gran empresa) o académico que para el desarrollo conjunto de nuevas aplicaciones de este compuesto como monómero o como potencial buidling bloque para nuevos ligandos. La tecnología está disponible para licenciar y / o desarrollo conjunto.
  
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  Furfural is readily available from non-edible biomass and is widely produced at the large scale, and is found to be extremely cheap. The developed process employs furfural (or derivatives thereof) as starting materials and allows for the preparation of a chiral 1,2-diol with high yields and selectivities in only two synthetic steps. The obtained product, namely chiral hydrofuroin, can be used as a non-expensive monomer in the development of high value polymers or alternatively as a chiral buidling block for the studies of innovative materials.
  
  The process relies on a key asymmetric transfer hydrogenation step that takes place in the absence of solvents and in mild conditions. This is the first process to date that allows for the preparation of chiral hydrofuroin with such high yields and selectivities, and employing a low amount of catalyst, which makes it reliable for large scale applications. Leer más
O-591AMIC innovation centre and CATHETER research group / España 798

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Characterization and quality tests of materials, catalysts, solutions

Characterization, activity tests, materials, nanoparticles
- Descripción de la oferta tecnológica :
  
  Diseño, SÍNTESIS, modificación y caracterización de materiales, nanomateriales, soluciones, catalizadores. Evaluación de la eficiencia, selectividad y del ciclo de vida de estos materiales. El equipo de PhD de AMIC es experto en la síntesis y modificación de diversos materiales como hidrotalcitas, zeolitas, carbón activo, óxido de aluminio, nanopartículas con Ag, Au, Pt, Cu, Pd, Ni. El objetivo de este conocimiento es obtener diferentes aplicaciones en nuevos procesos
  
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  AMIC owns all kind of equipments to study the properties of the materials;
  X- Ray diffraction, TEM, SEM, physisorption, IR, TPR/D/O, hydrogen chemisorption, microwaves, etc
  AMIC owns also lab pilot plants, in order to simulate and study the reaction required by the client.
  
  In addition to the characterization AMIC offers you the know-how in different materials, with some modification proposals in order to improve your materials. Leer más
O-926Institute of Chemical Research of Catalonia (ICIQ) / España 1010

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Nuevo catalizador inorgánico basado en metales para la oxidación del agua: Se buscan socios para el desarrollo conjunto

Inorganic water oxidation catalyst, oxidation catalyst, Catalyst, Water, inorganic chemistry, fuel cells, solar cells, Solar fuels, batteries, hydrogen production, hydrogen economy, photoproduction, chemical energy, electrochemical, photochemical, oxygen generation
- Descripción de la oferta tecnológica :
  
  Un bien conocido Instituto de investigación centrado en química y catalisis ha desarrollado un catalizador homogéneo para la oxidación del agua en oxígeno. El catalizador es totalmente inorgánico y basado en materiales baratos y abundantes. Es muy activo y estable, el catalizador puede ser utilizado en pilas de combustible, células solares, producción de hidrógeno limpio, etc Estamos buscando socios para el desarrollo conjunto de aplicaciones comercializables del catalizador.
  
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  Conversion of sunlight energy into storable chemical energy is the major pillar of a hydrogen economy based on non fossil fuels. Hydrogen (or other fuels) photoproduction must be coupled with the oxidation of water to oxygen. Recombination of fuels with oxygen would then provide the chemically stored energy for its use as required. Solar fuels are a promising alternative to other energy storage methods as batteries, since fuels are easier to transport and store in terms of handling and long term durability. The water oxidation process needs a proper catalyst to be feasible at large scale. This is one of the most important challenges that needs to be solved within this field.
  
  Being totally inorganic, the offered polyoxometallate catalyst does not decompose in the highly oxidative conditions of water splitting. The catalyst advantageously operates in a wide range of pHs and in the presence of an oxidant (either chemical, electrochemical, or photochemically generated). The catalyst allows for high turnover numbers, fast catalytic cycles and is self-repairing, which means that it does not show signs of fatigue or degradation upon time. Leer más
O-1176Institute of Chemical Research of Catalonia (ICIQ) / España 1

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Reciclaje de dióxido de carbono: un proceso de alta rendimiento para la preparación de metanol y DME a partir de dióxido de carbono

engineering, energy, catalysis, dimethyl ether, Carbon Dioxide, methanol
- Descripción de la oferta tecnológica :
  
  Un conocido instituto de investigación química y catálisis español ha desarrollado un proceso de flujo continuo para la reducción de dióxido de carbono a metanol que procede con excelentes conversiones y selectividad en una sola pasada a través del reactor, que permite lograr rendimientos máximos de producción de metanol. El metanol obtenido puede ser procesado para DME y los hidrocarburos para producir productos químicos de alto valor.
  
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  Global warming is largely associated to the presence of greenhouse gases such as carbon dioxide in the atmosphere. This, along with the reached peak oil and the fast increasing demand in energy, places our societies in front of the urge of finding sustainable solutions for the generation of energy and chemical feedstocks. It was proposed in the 1990s that methanol could efficiently replace fossil fuels as a means to store, distribute and supply energy. Methanol can serve as a raw material for the preparation of chemical feedstocks and is also a good fuel itself; so is dimethylether. Methanol is currently being produced from synthesis gas, directly obtained from gas or biomass.
  
  A much more sustainable approach to methanol synthesis consists in capturing carbon dioxide from atmosphere or from burning plants and treat it with hydrogen to form methanol, thereby closing the carbon cycle. Such processes have been reported and they most commonly suffer from low selectivity to methanol and/or conversion of carbon dioxide to methanol, therefore requiring sofisticated process plants with high associated operating costs.
  
  The developed process allows for the preparation of methanol and DME from carbon dioxide in high yields using well-known catalysts.
  
  The Institution is searching for industrial partners to further develop these technologies from the laboratory scale to the commercial plant, jointly or independently.
  
  - The process employs commercially available catalysts
  - High productivity of methanol per gram of catalyst per hour
  - no recycling of unreacted carbon dioxide is virtually needed
  - high per-pass conversion of carbon dioxide and selectivity to methanol or dimethylether
  - further methanol processing is possible Leer más
O-929Institute of Chemical Research of Catalonia (ICIQ) / España 832

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Innovadoras tecnologías de aminación: en busca de sustratos de interés industrial

amination technologies, amine, amines, amination, fine chemicals, APIs, agrochemicals, alkenes, olefins, acetylenes, allylic ethers, dienes, pharmaceutical drugs, synthetic chemist, Chemistry
- Descripción de la oferta tecnológica :
  
  Hemos desarrollado nuevas metodologías para la producción de aminas a partir de una amplia variedad de sustratos que contienen grupos funcionales. Más precisamente, las metodologías desarrolladas permiten llevar a cabo en una manera eficiente intermolecular 1,2-diamination de alquenos, entre otras aplicaciones. Estamos buscando socios / licenciatarios para desarrollar aplicaciones de la tecnología en los sustratos de relevancia comercial.
  
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  The developed methodologies represent first in class processes for direct introduction of nitrogenated groups onto olefins, acetylenes, allylic ethers, dienes etc. The 1,2 diamine scaffold is found in a large number of natural products with interesting biological activity and in many important pharmaceutical drugs. Their chiral derivatives are also used by the chemical community as control elements in asymmetric synthesis and catalysis. These derivatives therefore represent an attractive target for the synthetic chemist. However, such compounds have proven really challenging to prepare in one sole synthetic step.
  
  Two main methodologies are available:
  1) Metal catalyzed intermolecular 1,2-diamination of internal olefins and allylic ethers: allows for introducing two different nitrogenated groups on the scaffold of the substrate for further selective functionalization or derivatization in a stepwise manner and in mild conditions.
  
  2) Metal free amination reactions: High yielding and versatile: stereoselective 1,2-diamination of terminal alkenes, 1,2-diamination of internal alkenes, diamination of dienes and trienes, allylic amination, amination of acetylenes are some examples of applications of this methodology, based on the use of hypervalent iodine (III) derivatives. Leer más
O-932Institute of Chemical Research of Catalonia (ICIQ) / España 899

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Nueva cLAB: Gerente de Laboratorio Computacional Web, un portal web para el acceso y la gestión de un laboratorio computacional

computational laboratory, computational chemistry, computational chemists, computational platforms, computational biology, grid platforms, Chemistry, chemicals
- Descripción de la oferta tecnológica :
  
  La química computacional es una rama de la química que utiliza computadoras para ayudar en la solución de los problemas químicos. Se utilizan los resultados de la química teórica, que se incorporan en los programas informáticos eficientes, para calcular las estructuras y propiedades de moléculas y sólidos.
  
  cLAB es una aplicación basada en Internet que permite a los usuarios manipular archivos y carpetas, preparar tareas computacionales, presente y controlarlos mientras se están ejecutando, así como visualizar o almacenar los resultados. cLAB por lo tanto proporciona herramientas para los usuarios, así como para el administrador del sistema.
  
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  Computational chemistry is a branch of chemistry that uses computers to assist in solving chemical problems. It uses the results of theoretical chemistry, incorporated into efficient computer programs, to calculate the structures and properties of molecules and solids.
  
  In the last recent years, computational platforms have developed into cheaper and more powerful processors. However, management and optimal exploitation of this equipment faces certain obstacles. From the users point of view there is a need for a system that facilitates file management and jobs in a distributed and heterogeneous environment. Traditional queuing systems are not flexible enough to achieve the optimal use and distribution of the resources. On the other hand computational chemistry is moving towards the union of computational resources in different locations in order to create virtual super computers. This goal, currently referred to as “Grid” (but that has been referred to by many different names before) is a concept that opens new opportunities. Several “Grid” platforms have proved to give interesting answers to the needs of computational chemists.
  
  cLab manages users, files and jobs and provides a highly flexible queuing system. cLab is perfectly integrated with Linux OS and acts as a web interface between the scheduling and archive systems. It also provides tools for the user and the administrator, a user‐friendly interface, a complete files manager, the graphical visualization of results and also adapts to external different scheduling systems. cLab was developed under “Network queue system” and the registered version adapts to “Sun Grid Engine”. Leer más
O-930Institute of Chemical Research of Catalonia (ICIQ) / España 899

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Nuevo reactivo de trifluorometilación obtenido del fluoroformo: se buscan licenciatarios y/o socios para el desarrollo conjunto

agrochemicals, pharmaceutical ingredients, fine chemicals, chemicals, Chemistry, organic chemistry, trifluoromethylation reagents, fluoroform, trifluoromethylcopper, trifluoromethylation reactions, Trifluoromethyl coppe, trifluoromethylated building blocks
- Descripción de la oferta tecnológica :
  
  Hemos desarrollado un proceso para la obtención de una especie de trifluoromethylcopper utilizando fluoroformo y cloruro de cobre. El fluoroformo es la fuente más deseable del grupo trifluorometilo. El compuesto trifluoromethylcopper obtenido puede ser utilizado en reacciones de trifluorometilación de una amplia variedad de sustratos tales como haluros de arilo, haluros de heteroarilo, arilo ácidos bórico, haluros de alquilo, alfa-halocetonas, etc .. El proceso está disponible para licenciar y / o desarrollar.
  
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  Trifluoromethyl copper (I) compounds are particularly useful in various reactions of organic molecules to introduce the trifluoromethyl group into an organic substrate and are conventionally made using costly or corrosive CF3 sources. Fluoroform, CF3H, is an ideal source of CF3 because it is inexpensive, readily available in large industrial quantities, non-toxic, and not an ozone depleter. Fluoroform also presents a high greenhouse effect, which is commonly overcome by a massive storage of HCF3.
  
  However, the few known methods to prepare trifluoromethyl copper (I) compounds from fluoroform are all not only multistep and low-yielding, but also require low temperatures (-10 - -50 ºC) to minimize the extremely facile decomposition of the highly unstable trifluoromethyl anion that is generated in the first, CF3H deprotonation step. Our technology does not involve deprotonation of CF3H. Instead, the CuCF3 reagents are formed via direct cupration.
  
  As a result, the CuCF3 synthesis proceeds cleanly at room temperature while avoiding the formation of side-products. The trifluoromethyl copper reagents are obtained in high yield of up to >90% and can be used directly in various reactions, including aromatic trifluoromethylation, nucleophilic substitution and transmetalation. The trifluoromethylcopper compound obtained by cupration of fluoroform is therefore a versatile reagent that can be used to trifluoromethylate both electrophilic and nucleophilic substrates under certain conditions of reaction, without the help of any promoter and with a large tolerance to the presence of functional groups, which makes it suitable for late-stage introduction of the CF3 group in high added value compounds. Leer más
O-927Institute of Chemical Research of Catalonia (ICIQ) / España 943

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Método para la purificación de fullereno: extracción selectiva sólido-líquido

fullerene, fullerenes, fullerene purification, fullerene extraction, solid-liquid extraction, fullerite, Chemistry, chemicals, Buckyball, Nanotechnology, encapsulation
- Descripción de la oferta tecnológica :
  
  Hemos desarrollado un método para extraer selectivamente fullerenos de tamaño y forma determinada de una mezcla sólida de materiales carbonosos sólido-líquido utilizando técnicas de extracción. La discriminación de tamaño y la extracción del fullereno se consigue mediante una reversible y selectiva encapsulación y, por tanto, la solubilización, de la bola de Bucky. La posterior filtración y precipitación permite el aislamiento del fullereno purificado.
  
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  Current methods of fabrication of fullerenes lead to the obtention of fullerite, a material composed majoritarily of C60 (65%), C70 (21%) and C84 (5%) as well as higher fullerenes in minor amounts. The processes used industrially to separate the mixtures of fullerenes are usually based on chromatographic methods, that are expensive and scale‐limited. The offered process for the separation of fullerene derivatives is based on a sequential selective encapsulation in an appropriated solvent system of the fullerenes, either starting from the fullerite or from the soot. Fullerene compounds can be solubilized by size-selective encapsulation using a self-assembling concave compound allowing for fullerene extraction. Leer más

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fullerene, fullerenes, fullerene purification, fullerene extraction, solid-liquid extraction, fullerite, Chemistry, chemicals, Buckyball, Nanotechnology, encapsulation

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