55 research outputs found
Spectroscopic investigation into the design of solid–acid catalysts for the low temperature dehydration of ethanol
Processo para a produção de hidrocarbonetos clorados
Em 06/07/2016: Anuidade de patente de invenção do 11º ao 15º ano no prazo ordinárioConcedidaA presente invenção refere-se a um processo conduzido em baixas temperaturas para a produção de hidrocarbonetos clorados com elevada seletividade e conversão. Mais especificamente, a presente invenção
consiste em um processo particularmente adequado ao aproveitamento de uma corrente originária do acoplamento oxidativo do metano, para obtenção de cloreto de vinila e/ou 1,2-dicloroetano
Potential Routes for Thermochemical Biorefineries
This critical review focuses on potential routes for the multi-production of chemicals and fuels in the framework of thermochemical biorefineries. The up-to-date research and development in this field has been limited to BTL/G (biomass-to-liquids/gases) studies, where biomass-derived synthesis gas (syngas) is converted into a single product with/without the co-production of electricity and heat. Simultaneously, the interest on biorefineries is growing but mostly refers to the biochemical processing of biomass. However, thermochemical biorefineries (multi-product plants using thermo-chemical processing of biomass) are still the subject of few studies. This scarcity of studies could be attributed to the limitations of current designs of BTL/G for multi-production and the limited number of considered routes for syngas conversion. The use of a platform chemical (an intermediate) brings new opportunities to the design of process concepts, since unlike BTL/G processes they are not restricted to the conversion of syngas in a single-reaction system. Most of the routes presented here are based on old-fashioned and new routes for the processing of coal- and natural-gas-derived syngas, but they have been re-thought for the use of biomass and the multi-production plants (thermochemical biorefinery). The considered platform chemicals are methanol, DME, and ethanol, which are the common products from syngas in BTL/G studies. Important keys are given for the integration of reviewed routes into the design of thermochemical biorefineries, in particular for the selection of the mix of co-products, as well as for the sustainability (co-feeding, CO2 capture, and negative emissions).Ministerio de Educación FPU Program (AP2010-0119)Ministerio de Economía y Competitividad ENE2012-3159
Estimation of the biobased carbon content of polypropylene resin in composites on the basis of the carbon 14 concentration
Permeability, Melt Flow Index, Mechanical, and Morphological Properties of Green HDPE Composites: Effect of Mineral Fillers
A Method For The Production Of Olefins, An Olefin, A Polyolefin, And Use Of The Polyolefin
PROCESSO PARA PRODUÇÃO DE OLEFINAS, POLIOLEFINA, E, USO DA POLIOLEFINA. A presente invenção refere-se a um processo de produção de uma olefina a partir de pelo menos uma matéria prima natural renovável. Mais especificamente, a presente invenção trata de um processo onde eteno ou propeno é obtida com alto rendimento e alta produtividade através da reação de eletrodescarboxilação anódica de ácidos carboxílicos, respectivamente ácido propiemico ou ácido butírico, produzidos a partir de fermentação, preferencialmente de açúcares. O processo para gerar a olefina é simples, de baixo custo e apresenta baixa emissão de gases de origem fóssil causadores de efeito estufa.BRPI0904979 (A2)C07C11/04C07C11/06C08F10/02C08F10/06BR2009PI04979C07C11/04C07C11/06C08F10/02C08F10/0
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