Selective conversion of concentrated glucose to 1,2-propylene glycol and ethylene glycol by using RuSn/AC catalysts

doi:10.1016/j.apcatb.2018.08.022

	Selective conversion of concentrated glucose to 1,2-propylene glycol and ethylene glycol by using RuSn/AC catalysts
	Wang, Junhu 2; Zhang, Tao 2,3; Wang, Xiaodong 2; Pang, Jifeng 2; Zheng, Mingyuan 2; Li, Xinsheng 1,2; Jiang, Yu 2; Zhao, Yu 2; Wang, Aiqin 2,3
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2018-12-30
卷号	239 页码:300-308
关键词	RuSn catalyst Concentrated sugar 1,2-propylene glycol Ethylene glycol Hydrogenolysis
ISSN号	0926-3373
DOI	10.1016/j.apcatb.2018.08.022
通讯作者	Zheng, Mingyuan(myzheng@dicp.ac.cn) ; Zhang, Tao(taozhang@dicp.ac.cn)
英文摘要	A series of RuSn/AC catalysts with 5% Ru and 1-6% Sn loadings were synthesized for converting concentrated (10 wt%) sugars to 1,2-propylene glycol (1,2-PG) and ethylene glycol (EG) in a semi-continuous autoclave reactor. The catalysts structure and the product distributions are found to be highly dependent on the tin loading. At tin contents below 2%, RuSn alloy was formed coexisting with small amounts of highly dispersed SnO2 in the catalyst, and hexitols were the main products due to the high activity of catalysts for hydrogenation. At a tin content above 5%, more SnO2 species were present and covered RuSn alloy particles, leading to notable amounts of humins in the reaction due to the depressed hydrogenation activity. As for the optimal catalyst of 5%Ru3%Sn/AC, 77% of tin formed RuSn alloy with ruthenium and 23% of tin existed in the form of highly dispersed SnO2 under reaction conditions. The catalyst gave 25% and 26.9% yields of 1,2-PG and EG in the glucose conversion at 513 K for 10 min. The glycols yield was insensitive to the feeding rate of glucose, which could be increased to 10 mL/min with a glycols productivity of nearly 180 g L-1 h(-1). The catalysts structure and reaction networks were proposed according to pseudo in situ characterizations and conditional experiments. The highly dispersed SnO2 was effective to sugar isomerization and the RuSn alloy played the major role in retro-aldol condensation and hydrogenation reactions. Over the 5%Ru3%Sn/AC catalyst, the rates of cascade reactions of isomerization, retro-aldol condensation and hydrogenation matched well due to the balanced activity of RuSn alloy and highly dispersed SnO2, which afforded a high yield of 1,2-PG and EG.
资助项目	National Science Foundation of China[21306191] ; National Science Foundation of China[21376239] ; National Science Foundation of China[21690081] ; National Science Foundation of China[21690084] ; National Science Foundation of China[21776268] ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences[XDA 21060200] ; China Scholarship Council[201704910436]
WOS关键词	BIMETALLIC CATALYSTS ; LIGNOCELLULOSIC BIOMASS ; RUTHENIUM CATALYSTS ; SUPERCRITICAL WATER ; PLATFORM MOLECULES ; SUGAR ALCOHOLS ; LACTIC-ACID ; CELLULOSE ; HYDROGENATION ; 1,2-PROPANEDIOL
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000446283800032
资助机构	National Science Foundation of China ; National Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; National Science Foundation of China ; National Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; National Science Foundation of China ; National Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; National Science Foundation of China ; National Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration, Strategic Priority Research Program of the Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/166840]
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
通讯作者	Zhang, Tao; Zheng, Mingyuan
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Wang, Junhu,Zhang, Tao,Wang, Xiaodong,et al. Selective conversion of concentrated glucose to 1,2-propylene glycol and ethylene glycol by using RuSn/AC catalysts[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,239:300-308.
APA	Wang, Junhu.,Zhang, Tao.,Wang, Xiaodong.,Pang, Jifeng.,Zheng, Mingyuan.,...&Wang, Aiqin.(2018).Selective conversion of concentrated glucose to 1,2-propylene glycol and ethylene glycol by using RuSn/AC catalysts.APPLIED CATALYSIS B-ENVIRONMENTAL,239,300-308.
MLA	Wang, Junhu,et al."Selective conversion of concentrated glucose to 1,2-propylene glycol and ethylene glycol by using RuSn/AC catalysts".APPLIED CATALYSIS B-ENVIRONMENTAL 239(2018):300-308.