期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 388, 期 -, 页码 116-122出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molcata.2013.11.015
关键词
Catalyst stability; Ketonic decarboxylation; Ketone hydrodeoxygenation; Pt/alumina; Zirconium oxide
资金
- MINECO [CSD2009-00050, CTQ2011-27550]
- Spanish National Research Council (CSIC) [Es 2010RU0108]
- CSIC
In the transformation of lignocellulosic biomass into fuels and chemicals carbon-carbon bond formations and rising hydrophobicity are highly desired. The ketonic decarboxylation fits these requirements perfectly as it converts carboxylic acids into ketones forming one carbon-carbon bond and eliminates three oxygen atoms as carbon dioxide and water. This reaction is used, in a cascade process, together with a hydrogenation and dehydration catalyst to obtain hydrocarbons in the kerosene range from hexose-derived valeric acid. It is shown that zirconium oxide is a very selective and stable catalyst for this process and when combined with platinum supported on alumina, the oxygen content was reduced to almost zero. Furthermore, it is demonstrated that alumina is superior to active carbon, silica, or zirconium oxide as support for the hydrogenation/dehydration/hydrogenation sequence and a palladium-based catalyst deactivated more rapidly than the platinum catalyst. Hence, under optimized reaction conditions valeric acid is converted into n-nonane with 80% selectivity (together with a 10% of C-10-C-15 hydrocarbons) in the organic liquid phase upto a 100:1 feed to catalyst ratio [w/w]. The oxygen free hydrocarbon product mixture (85% yield) meets well with the boiling point range of kerosene as evidenced by a simulated distillation. In the gas phase, butane was detected together with mainly carbon dioxide. (c) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据