Comparative investigation of the MTH induction reaction over HZSM-5 and HSAPO-34 catalysts

	Comparative investigation of the MTH induction reaction over HZSM-5 and HSAPO-34 catalysts
	Wei, Yingxu 1; Zhou, You 1,2; Qi, Liang 1,2; Liu, Zhongmin 1
刊名	MOLECULAR CATALYSIS
	2017-05-01
卷号	433 页码:20-27
关键词	HZSM-5 HSAPO-34 Methanol to hydrocarbons Induction Mechanism
英文摘要	Methanol to hydrocarbons (MTH) induction reaction was comparatively investigated over HZSM-5 and HSAPO-34 catalysts combined with on line thermogravimetry analysis of catalyst weight increment by intelligent gravimetric analyzer (IGA) studies. The influence of catalyst topology and acidity and reaction temperature on the reaction performance were correlated with the confined organics formation and evolution over the catalysts. For the latter stage of the MTH induction period, methanol conversion over HZSM-5 catalyst was proved a well-defined autocatalysis process, while over HSAPO-34, the increasing rate of methanol conversion was retarded due to accumulation of methyladamantanes. There existed a similar deactivation behaviour for HZSM-5 catalysts with low Si/Al ratios and HSAPO-34 catalysts during the temperature-programmed MTH (TP-MTH) reaction. But the IGA studies showed that the change of the retained species amount was quite different: for TP-MTH reaction over HZSM-5, the amount firstly increased and then decreased to a stable value; while for HSAPO-34, the amount kept increasing until reached a constant value. MTH induction reaction over HZSM-5 catalyst with different Si/Al ratios and HSAPO-34 catalysts with different Si contents were also investigated. All these findings revealed the influence of catalyst topologies on the formation of retained species and then on the catalyst activity during the MTH induction reaction. (C) 2017 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	DEUTERIUM-LABELED FEEDS ; TO-OLEFINS CONVERSION ; CARBON-CARBON BOND ; METHANOL CONVERSION ; REACTION-MECHANISM ; ZEOLITE H-ZSM-5 ; HYDROCARBON-POOL ; AROMATIC-HYDROCARBONS ; MOLECULAR-SIEVE ; ZSM-5 ZEOLITE
收录类别	SCI
语种	英语
WOS记录号	WOS:000400562600004
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/151967]
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	1.Chinese Acad Sci, Dalian Inst Chem Phys, IChEM Collaborat Innovat Ctr Chem Energy Mat, Dalian Natl Lab Clean Energy,Natl Engn Lab Methan, 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,Zhou, You,Qi, Liang,et al. Comparative investigation of the MTH induction reaction over HZSM-5 and HSAPO-34 catalysts[J]. MOLECULAR CATALYSIS,2017,433:20-27.
APA	Wei, Yingxu,Zhou, You,Qi, Liang,&Liu, Zhongmin.(2017).Comparative investigation of the MTH induction reaction over HZSM-5 and HSAPO-34 catalysts.MOLECULAR CATALYSIS,433,20-27.
MLA	Wei, Yingxu,et al."Comparative investigation of the MTH induction reaction over HZSM-5 and HSAPO-34 catalysts".MOLECULAR CATALYSIS 433(2017):20-27.