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Biorrefinerías de ácido glucárico

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Fecha de publicación: 14/12/2015 Última actualización: 24/05/2017 Descripción 1,2,3,4 Él ácido d-glucárico, también llamado ácido sacárico, es un compuesto químico con fórmula C 6 H 10 O 8 y miembro de una familia extensa de moléculas conocidas como azúcares ácidos. Se trata de un ácido aldárico que se produce de manera natural que se encuentra típicamente en una gran variedad de frutas y vegetales. Es un compuesto altamente funcionalizado con cuatro carbonos quirales y una gran gama de rutas de reacción. Su potencial comercial fue puesto de relevancia en el informe “ Top Value Added Chemicals from Biomass ” del DoE de USA que describe su uso como precursor de polímeros, incluyendo nuevas poliamidas y poliésteres altamente ramificados. Tecnologías de proceso 1,3,4,5,6,7,8 La primera mención de la preparación sintética del ácido D-glucárico está fechada en 1888. Se trata de un informe de Sohst y Tollens, los cuales llevaron a cabo la oxidación nítrica de la D-g...
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Glucaric acid biorefineries

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Publication date: 14/12/2015 Last update: 24/05/2017 Description 1,2,3,4 D-Glucaric acid, also called saccharic acid, is a chemical compound with formula C 6 H 10 O 8 and member of a large family of molecules known as oxidized sugars. It is a naturally occurring aldaric acid, typically found in small amounts in a variety of fruits and vegetables. It is a highly functionalized compound with four chiral carbons and a plethora of reaction pathways. Its commercial potential was unveiled in the report “Top Value Added Chemicals from Biomass” from the Department of Energy of USA which described its use as a building block for a number of polymers, including new nylons and hyperbranched polyesters. Process technologies 1,3,4,5,6,7,8 The synthetic preparation of D-glucaric acid dates back to a report of Sohst and Tollens (1888) who carried out the nitric acid oxidation of D-glucose to D-glucaric acid. Current methods for its production are based on this process and in...
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Mini-planta de ácido glucárico a partir de glucosa es puesta en marcha con éxito

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Noticias recientes sobre una de las piezas elementales sostenibles con mayor proyección. Rennovia Inc.  y  Johnson Matthey Process Technologies anunciaban el 16 de este mes que habían puesto en marcha de manera exitosa una mini-planta para la producción de ácido glucárico a partir de glucosa con tecnología propia. En Marzo de 2014, estas dos empresas se pusieron de acuerdo para desarrollar, demostrar y comercializar tecnologías catalíticas para obtener ácido glucárico y ácido adípico a partir de fuentes renovables. Bajo esta colaboración, Rennovia y JM Process Technologies trabajan juntos en procesos basados en la tecnología de Rennovia para la oxidación catalítica de glucosa a ácido glucárico y la hidrogenación catalítica de este último a ácido adípico. El objetivo final de la colaboración es licenciar un paquete que produzca de manera comercial estos productos químicos. El comienzo de la operación de esta mini-planta es un gran paso en el camino para alcanzar dicho objet...
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Biobutanol biorefineries

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Publication date: 08/02/2016 Last update: 18/12/2017 General description 1,2,3,4,5,6,7 Butanol is a four-carbon alcohol with chemical formula C 4 H 10 O. There are four possible isomers for this molecule: n-butanol, isobutanol, tert-butanol and sec-butanol. Their different structures have a straight impact on their physical and chemical properties. Figure 1. Isomers of butanol Biobutanol is commonly used to refer to the butanol produced from biomass. n-Butanol is the major natural product formed in ABE fermentation. Isobutanol can be produced in alcoholic fermentation. sec-Butanol cannot be directly obtained by fermentation although it can be generated via 2,3-butanediol from fermentative processes. tert-Butanol is not produced by any known biological route. For the purposes of this post, biobutanol will stand for n-butanol, isobutanol or both of them, depending on the case. Butanol formation through anaerobic bacteria fermentation was already observed by ...
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Alcohol-To-Fuel

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Type of post: OVERVIEW. Introduction Bioethanol produced from fermentation of sugar based crops is the major product of the biofuels industry [1]. But, ethanol is not a “drop-in” solution and requires substantial changes in refining or distribution infrastructure. The properties of this alcohol (an oxygenated single molecule) are largely different than those of gasoline, diesel and jet fuel blendstocks (mixtures of hydrocarbons), leading to problems in blends. Ethanol can cause corrosion problems in transport pipelines that were designed to work only with gasoline. In the specific case of the aviation fuel, there are stricter quality requirements than fuels used in road transport. Ethanol shows low compatibility as a blendstock for aviation fuel because of its high volatility and water absorption and low flash point and energy density. Butanol is not as incompatible as ethanol, however, it still poses unacceptable safety risks due to its low flash point and high volatilit...
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