Influence of acid site density on the three-staged MTH induction reaction over HZSM-5 zeolite

doi:10.1039/c6ra08393e

	Influence of acid site density on the three-staged MTH induction reaction over HZSM-5 zeolite
	Wei, Yingxu 1; Qi, Liang 1,2; Li, Jinzhe 1; He, Yanli 1; Xu, Lei 1; Liu, Zhongmin 1
刊名	RSC ADVANCES
	2016
卷号	6 期号:57 页码:52284-52291
ISSN号	2046-2069
DOI	10.1039/c6ra08393e
文献子类	Article
英文摘要	The influence of acid site density on the three-stage methanol to hydrocarbons (MTH) induction reaction was systematically investigated over three HZSM-5 catalysts (average size of 1-2 mu m) with different Si/Al ratios. The initial active species can be formed more easily over catalysts with higher acid site density during the initial two stages and co-feeding toluene could shorten the initial two stages in the temperature-programmed MTH reaction. For each catalyst, the kinetics of the autocatalysis reaction during the induction period was investigated and the corresponding activation energy was calculated and compared. It was found that the formation rate of the retained species and its autocatalytic effect can both be enhanced over samples with high acid site density. Organic materials occluded in the catalyst during the MTH induction reaction were also analyzed ex situ by thermal analysis and GC-MS after extraction. The characterization results corresponded with the kinetic results very well.
WOS关键词	TO-OLEFINS CONVERSION ; DEUTERIUM-LABELED FEEDS ; METHANOL CONVERSION ; REACTION-MECHANISM ; HYDROCARBON-POOL ; CATALYTIC CYCLE ; ZSM-5 ZEOLITE ; CARBENIUM ION ; CO-REACTION ; H-ZSM-5
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000382079800098
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170112]
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	Liu, Zhongmin
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, iChEM Collaborat Innovat Ctr Chem Energy Mat, Natl Engn Lab Methanol Olefins,Dalian Natl Lab Cl, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wei, Yingxu,Qi, Liang,Li, Jinzhe,et al. Influence of acid site density on the three-staged MTH induction reaction over HZSM-5 zeolite[J]. RSC ADVANCES,2016,6(57):52284-52291.
APA	Wei, Yingxu,Qi, Liang,Li, Jinzhe,He, Yanli,Xu, Lei,&Liu, Zhongmin.(2016).Influence of acid site density on the three-staged MTH induction reaction over HZSM-5 zeolite.RSC ADVANCES,6(57),52284-52291.
MLA	Wei, Yingxu,et al."Influence of acid site density on the three-staged MTH induction reaction over HZSM-5 zeolite".RSC ADVANCES 6.57(2016):52284-52291.