[EN] COMPOUNDS AND METHODS FOR THE PRODUCTION OF LONG CHAIN HYDROCARBONS FROM BIOLOGICAL SOURCES<br/>[FR] COMPOSÉS ET PROCÉDÉS DE PRODUCTION D'HYDROCARBURES À CHAÎNE LONGUE À PARTIR DE SOURCES BIOLOGIQUES
申请人:LOS ALAMOS NAT SECURITY LLC
公开号:WO2013040311A1
公开(公告)日:2013-03-21
The present invention is directed to the preparation of oxygenated, unsaturated hydrocarbon compounds, such as derivatives of furfural or hydroxymethyl furfural produced by aldol condensation with a ketone or a ketoester, as well as methods of deoxidatively reducing those compounds with hydrogen under acidic conditions to provide saturated hydrocarbons useful as fuels.
The hydrodeoxygenation of bioderived furans into alkanes
作者:Andrew D. Sutton、Fraser D. Waldie、Ruilian Wu、Marcel Schlaf、Louis A. ‘Pete’ Silks、John C. Gordon
DOI:10.1038/nchem.1609
日期:2013.5
The conversion of biomass into fuels and chemical feedstocks is one part of a drive to reduce the world's dependence on crude oil. For transportation fuels in particular, wholesale replacement of a fuel is logistically problematic, not least because of the infrastructure that is already in place. Here, we describe the catalytic defunctionalization of a series of biomass-derived molecules to provide linear alkanes suitable for use as transportation fuels. These biomass-derived molecules contain a variety of functional groups, including olefins, furan rings and carbonyl groups. We describe the removal of these in either a stepwise process or a one-pot process using common reagents and catalysts under mild reaction conditions to provide n-alkanes in good yields and with high selectivities. Our general synthetic approach is applicable to a range of precursors with different carbon content (chain length). This allows the selective generation of linear alkanes with carbon chain lengths between eight and sixteen carbons. The development of methodology to convert biomass into fuels and chemical feedstocks is part of a drive to reduce the world's dependence on crude oil. Here, the catalytic defunctionalization of a series of biomass-derived molecules is described, which allows the selective generation of alkanes with carbon chain lengths between eight and sixteen for use as transportation fuels.
COMPOUNDS AND METHODS FOR THE PRODUCTION OF LONG CHAIN HYDROCARBONS FROM BIOLOGICAL SOURCES
申请人:Gordon John Cameron
公开号:US20150232394A1
公开(公告)日:2015-08-20
The present invention is directed to the preparation of oxygenated, unsaturated hydrocarbon compounds, such as derivatives of furfural or hydroxymethyl furfural produced by aldol condensation with a ketone or a ketoester, as well as methods of deoxidatively reducing those compounds with hydrogen under acidic conditions to provide saturated hydrocarbons useful as fuels.
Functional group dependence of the acid catalyzed ring opening of biomass derived furan rings: an experimental and theoretical study
作者:Christopher R. Waidmann、Aaron W. Pierpont、Enrique R. Batista、John C. Gordon、Richard L. Martin、L. A. “Pete” Silks、Ryan M. West、Ruilian Wu
DOI:10.1039/c2cy20395b
日期:——
We describe studies of Brønsted acid catalyzed ringopening of substituted furans contained within biomass derived C8- and C9-molecules. Ringopening occurs homogeneously under relatively mild conditions of 80 °C using catalytic hydrochloric acid. In the case of 4-(5-methyl-2-furyl)-2-butanone (1a), the reaction proceeds to a single product in up to 92% yield after 24 hours. For 4-(2-furanyl)-2-butanone
我们描述了布朗斯台德酸催化生物质衍生的C 8和C 9分子中包含的取代呋喃的开环研究。在80°C的相对温和条件下,使用催化盐酸。如果是4-(5-甲基-2-呋喃基)-2-丁酮(1a),反应在24小时后以高达92%的产率进行到单一产物。为了4-(2-呋喃基)-2-丁酮(1b)和4-(5-羟甲基)-2-呋喃基-2-丁酮(1c),但是,观察到多种产物,说明呋喃环取代基对此类化合物的反应性有重大影响。使用其他几种相似的底物测试了这些反应途径的一般性。动力学实验表明1a的开环是通过特定的酸催化而发生的,计算结果阐明了初始质子化对反应路径的影响。相对于实验测量值校准计算的p K a值,并与观察到的反应性一致。包含明确的氢键键合水 在研究醇和酮基的质子化时,除了SMD溶剂模型外,还需要其他分子。