Selective conversion of aqueous glucose to value-added sugar aldose on TiO2-based photocatalysts

	Selective conversion of aqueous glucose to value-added sugar aldose on TiO2-based photocatalysts
	Chong, Ruifeng; Li, Jun; Ma, Yi; Zhang, Bao; Han, Hongxian; Li, Can
刊名	journal of catalysis
	2014-05-01
卷号	314 期号:1 页码:101-108
关键词	Photocatalysis Biomass Glucose Reactive oxygen species TiO2
通讯作者	李灿
英文摘要	we describe here a photocatalytic process for direct conversion of glucose to value-added chemicals (arabinose and erythrose) and h-2 in water under mild reaction conditions without additional acid or base. the total selectivity for the production of arabinose and erythrose on rutile tio2-based photocatalyst reaches 91% at 65% conversion. more importantly, it has been demonstrated for the first time that the photodegradation of glucose initially involves c1-c2 bond cleavage (alpha-scission) to produce arabinose in the presence of water as solvent. to unravel the high selectivity on rutile tio2, epr and glucose reaction were carried out on rutile tio2 in the presence of h2o2. it was found that the selectivity of the products is mainly dependent on the reactive oxygen species: the hydroxyl radicals ((oh)-o-center dot) may lead to low selectivity, while the peroxy species lead to a high selectivity. the advantages of the photocatalytic approach for conversion of biomass to value-added chemicals include (1) operation at low reaction temperature, (2) benign environmental effects due to using only water as both solvent and oxidant precursor, and (3) being wasteless due to high selectivity with h-2 as the by-product. (c) 2014 elsevier inc. all rights reserved.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; engineering, chemical
研究领域[WOS]	chemistry ; engineering
关键词[WOS]	lactic-acid ; tio2 ; oxidation ; hydrogenation ; fermentation ; mechanisms ; evolution ; catalysts ; kinetics ; biomass
收录类别	SCI
语种	英语
WOS记录号	WOS:000336951900011
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/144363]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Chong, Ruifeng,Li, Jun,Ma, Yi,et al. Selective conversion of aqueous glucose to value-added sugar aldose on TiO2-based photocatalysts[J]. journal of catalysis,2014,314(1):101-108.
APA	Chong, Ruifeng,Li, Jun,Ma, Yi,Zhang, Bao,Han, Hongxian,&Li, Can.(2014).Selective conversion of aqueous glucose to value-added sugar aldose on TiO2-based photocatalysts.journal of catalysis,314(1),101-108.
MLA	Chong, Ruifeng,et al."Selective conversion of aqueous glucose to value-added sugar aldose on TiO2-based photocatalysts".journal of catalysis 314.1(2014):101-108.