Highly active tin(IV) phosphate phase transfer catalysts for the production of lactic acid from triose sugars

doi:10.1039/c5cy00647c

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	Highly active tin(IV) phosphate phase transfer catalysts for the production of lactic acid from triose sugars
	Wang, Xincheng 1; Liang, Fengbing 2; Huang, Chongpin 1; Li, Yingxia 1; Chen, Biaohua 1
	2015
发表期刊	CATALYSIS SCIENCE & TECHNOLOGY
卷号	5 期号:9 页码:4410-4421
摘要	Lactic acid (LA) is an important intermediate in the fine chemical industry because it is utilized as a building block for the production of biodegradable plastics. In this study, a series of tin phosphate phase transfer catalysts modified with several surfactants have been prepared by a facile one-pot synthesis method and tested for the direct conversion of trioses to LA under hydrothermal conditions. Poly(ethylene glycol) (PEG) was identified as the most promising surfactant, and the product distribution closely depended on the reaction temperature, catalyst loading and substrate concentration. Complete DHA conversion and a good yield of up to 96.1% of LA were obtained at 140 degrees C after 4 h of reaction time. Pyridine FTIR demonstrated the presence of Bronsted and Lewis acid sites, which play crucial roles in the dehydration of DHA to pyruvaldehyde (PA) and the following isomerization of generated PA to LA. Furthermore, the isomerization of PA to LA was found to be the rate-determining step. A possible reaction mechanism was proposed: 1) the coordination between PEG and the metal ions caused a greater separation of the tin ions from the phosphate anions, making them more potent Lewis acid sites, and 2) the PEG behaved as a phase transfer catalyst during the reaction. This study paves the way for the further design of improved solid acid catalysts for aqueous phase production of LA from carbohydrates.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1039/c5cy00647c
关键词[WOS]	MESOPOROUS TIN PHOSPHATE ; POLY(ETHYLENE GLYCOLS) ; BIOMASS CONVERSION ; METHYL LACTATE ; ALKYL LACTATES ; WATER ; DIHYDROXYACETONE ; ISOMERIZATION ; EFFICIENT ; ZEOLITE
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000359563300015
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/6740
专题	酶工程研究组
作者单位	1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xincheng,Liang, Fengbing,Huang, Chongpin,et al. Highly active tin(IV) phosphate phase transfer catalysts for the production of lactic acid from triose sugars[J]. CATALYSIS SCIENCE & TECHNOLOGY,2015,5(9):4410-4421.
APA	Wang, Xincheng,Liang, Fengbing,Huang, Chongpin,Li, Yingxia,&Chen, Biaohua.(2015).Highly active tin(IV) phosphate phase transfer catalysts for the production of lactic acid from triose sugars.CATALYSIS SCIENCE & TECHNOLOGY,5(9),4410-4421.
MLA	Wang, Xincheng,et al."Highly active tin(IV) phosphate phase transfer catalysts for the production of lactic acid from triose sugars".CATALYSIS SCIENCE & TECHNOLOGY 5.9(2015):4410-4421.