Epoxides hydration on Co-III(salen)-OTs encapsulated in silica nanocages modified with prehydrolyzed TMOS

doi:10.1016/j.jcat.2016.03.006

	Epoxides hydration on Co-III(salen)-OTs encapsulated in silica nanocages modified with prehydrolyzed TMOS
	Zhong, Mingmei 1,2; Zhao, Yaopeng 2; Yang, Qihua 2; Li, Can 2
刊名	JOURNAL OF CATALYSIS
	2016-06-01
卷号	338 页码:184-191
关键词	Co-iii(Salen)-ots Hydration Nanocages Deactivation Of Co-iii(Salen)-ots Tmos
ISSN号	0021-9517
DOI	10.1016/j.jcat.2016.03.006
文献子类	Article
英文摘要	The silylation for reducing the pore entrance size is crucial for the success encapsulation of molecular catalysts. Herein, we reported the preparation of an efficient solid catalyst for epoxide hydration via encapsulation of Co-III(salen)-OTs in the nanocages of FDU-12 using prehydrolyzed tetramethylorthosilicate (TMOS) as silylation reagent under mild condition. Co-III(salen)-OTs in nanocages could afford TOF of 2760 h(-1) in the hydration of propylene epoxide (PO), which is the highest ever reported at low PO/H2O molar ratio. Comparison of the activity of Co-III(salen)-OTs accommodated in nanocages with different microenvironments suggests that Co-III(salen)-OTs in hydrophilic microenvironment was more active than that in hydrophobic microenvironment in the hydration of propylene epoxide. Moreover, studies show that the deactivation rate of Co-III(salen)-OAc is lower than that of Co-III(salen)-OTs in nanocages due to the confinement effect of the nanoreactor. (C) 2016 Elsevier Inc. All rights reserved.
WOS关键词	HYDROLYTIC KINETIC RESOLUTION ; ETHYLENE-OXIDE ; CATALYTIC HYDRATION ; TERMINAL EPOXIDES ; EPICHLOROHYDRIN ; NANOREACTORS ; REACTIVITY ; COMPOSITE ; MECHANISM ; STRATEGY
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000376695500019
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170574]
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	Yang, Qihua; Li, Can
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Zhong, Mingmei,Zhao, Yaopeng,Yang, Qihua,et al. Epoxides hydration on Co-III(salen)-OTs encapsulated in silica nanocages modified with prehydrolyzed TMOS[J]. JOURNAL OF CATALYSIS,2016,338:184-191.
APA	Zhong, Mingmei,Zhao, Yaopeng,Yang, Qihua,&Li, Can.(2016).Epoxides hydration on Co-III(salen)-OTs encapsulated in silica nanocages modified with prehydrolyzed TMOS.JOURNAL OF CATALYSIS,338,184-191.
MLA	Zhong, Mingmei,et al."Epoxides hydration on Co-III(salen)-OTs encapsulated in silica nanocages modified with prehydrolyzed TMOS".JOURNAL OF CATALYSIS 338(2016):184-191.