Kinetic insight into the effect of the catalytic functions on selective   conversion of cellulose to polyols on carbon-supported WO3 and Ru   catalysts

doi:10.1016/j.cattod.2015.09.056

CORC > 北京大学 > 化学与分子工程学院

	Kinetic insight into the effect of the catalytic functions on selective conversion of cellulose to polyols on carbon-supported WO3 and Ru catalysts
	Liu, Yue ; Liu, Haichao
刊名	CATALYSIS TODAY
	2016
关键词	Cellulose Ethylene glycol Propylene glycol Sorbitol Tungsten trioxide Solid base ETHYLENE-GLYCOL PRODUCTION SOLID ACID CATALYSTS LIGNOCELLULOSIC BIOMASS RUTHENIUM CATALYST D-GLUCOSE HYDROGENATION WATER ISOMERIZATION NICKEL HYDROLYSIS
DOI	10.1016/j.cattod.2015.09.056
英文摘要	Efficient conversion of cellulose, the most abundant biomass on Earth, to chemicals in high yields remains a formidable challenge. Here, we report the marked change in the distribution of polyol products in the cellulose reaction on Ru/C and WO3/C, strongly depending on the competitive reactions of the glucose intermediate. WO3 crystallites not only promote, as a solid acid, the efficient hydrolysis of cellulose to glucose, but also catalyze the selective cleavage of the C-C bonds in glucose and other C-6 sugar intermediates, leading to the formation of ethylene glycol and propylene glycol, in competition with the sugar hydrogenation to the corresponding C-6 polyols (e.g. sorbitol) on Ru/C. The basic C support, behaving similar to other solid bases (i.e. MgO), catalyzes the isomerization of glucose into fructose, leading to the favored formation of propylene glycol instead of ethylene glycol. Such strong dependence of the product distribution on the catalytic functions is clarified by the kinetic analysis of the three competitive reactions of glucose, including its hydrogenation, isomerization and C-C bond cleavage. Importantly, such kinetic analysis can predict the maximum selectivity ratio of propylene glycol to ethylene glycol, which is 2.5, for example, at 478 K under the reaction conditions in this work, corresponding to a maximum yield of propylene glycol of similar to 71%. These understandings shed new insights into the selective conversion of cellulose, which provides guidance for the rational design of catalyst functions and tuning of reaction parameters towards the controllable synthesis of specific products from cellulose. (C) 2015 Elsevier B.V. All rights reserved.; SCI(E); EI; ARTICLE; hcliu@pku.edu.cn; 74-81; 269
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437121]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Liu, Yue,Liu, Haichao. Kinetic insight into the effect of the catalytic functions on selective conversion of cellulose to polyols on carbon-supported WO3 and Ru catalysts[J]. CATALYSIS TODAY,2016.
APA	Liu, Yue,&Liu, Haichao.(2016).Kinetic insight into the effect of the catalytic functions on selective conversion of cellulose to polyols on carbon-supported WO3 and Ru catalysts.CATALYSIS TODAY.
MLA	Liu, Yue,et al."Kinetic insight into the effect of the catalytic functions on selective conversion of cellulose to polyols on carbon-supported WO3 and Ru catalysts".CATALYSIS TODAY (2016).