Transformation of cellulose and its derived carbohydrates into formic and lactic acids catalyzed by vanadyl cations

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	Transformation of cellulose and its derived carbohydrates into formic and lactic acids catalyzed by vanadyl cations
	Tang, Zhenchen ; Deng, Weiping ; Wang, Yanliang ; Zhu, Enze ; Wan, Xiaoyue ; Zhang, Qinghong ; Wang, Ye ; Deng WP(邓卫平) ; Zhang QH(张庆红) ; Wang Y(王野)
刊名	http://dx.doi.org/10.1002/cssc.201400150
	2014
关键词	Biomass Carbohydrates Carbon dioxide Catalysis Cellulose Formic acid Fructose Glucose Isomerization Isomers Positive ions Reaction kinetics Vanadium
英文摘要	The transformation of cellulose or cellulose-derived carbohydrates into platform chemicals is the key to establish biomass-based sustainable chemical processes. The systems able to catalyze the conversion of cellulose into key chemicals in water without the consumption of hydrogen are limited. We report that simple vanadyl (VO2+) cations catalyze the conversions of cellulose and its monomer, glucose, into lactic acid and formic acid in water. We have discovered an interesting shift of the major product from formic acid to lactic acid on switching the reaction atmosphere from oxygen to nitrogen. Our studies suggest that VO2+ catalyzes the isomerization of glucose to fructose, the retro-aldol fragmentation of fructose to two trioses, and the isomerization of trioses, which leads to the formation of lactic acid under anaerobic conditions. The oxidative cleavage of C=C bonds in the intermediates caused by the redox conversion of VO2+/VO2+ under aerobic conditions results in formic acid and CO2. We demonstrate that the addition of an alcohol suppresses the formation of CO 2 and enhances the formic acid yield significantly to 70-75 %. Two birds with one stone: A shift of the major product from formic acid to lactic acid is observed on switching the reaction atmosphere from O2 to N2 during cellulose or glucose conversions catalyzed by vanadyl cations. Glucose is first isomerized into fructose, which undergoes retro-aldol fragmentation to form two trioses, which produce lactic and formic acid. ? 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89876]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Tang, Zhenchen,Deng, Weiping,Wang, Yanliang,et al. Transformation of cellulose and its derived carbohydrates into formic and lactic acids catalyzed by vanadyl cations[J]. http://dx.doi.org/10.1002/cssc.201400150,2014.
APA	Tang, Zhenchen.,Deng, Weiping.,Wang, Yanliang.,Zhu, Enze.,Wan, Xiaoyue.,...&王野.(2014).Transformation of cellulose and its derived carbohydrates into formic and lactic acids catalyzed by vanadyl cations.http://dx.doi.org/10.1002/cssc.201400150.
MLA	Tang, Zhenchen,et al."Transformation of cellulose and its derived carbohydrates into formic and lactic acids catalyzed by vanadyl cations".http://dx.doi.org/10.1002/cssc.201400150 (2014).