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Comparative investigation of the MTH induction reaction over HZSM-5 and HSAPO-34 catalysts
Zhou, You1,2; Qi, Liang1,2; Wei, Yingxu1; Liu, Zhongmin1
KeywordHzsm-5 Hsapo-34 Methanol To Hydrocarbons Induction Mechanism
Source PublicationMOLECULAR CATALYSIS
2017-05-01
DOI10.1016/j.mcat.2017.02.018
Volume433Pages:20-27
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordDEUTERIUM-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
AbstractMethanol 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.
Language英语
WOS IDWOS:000400562600004
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/151967
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
GB/T 7714
Zhou, You,Qi, Liang,Wei, Yingxu,et al. Comparative investigation of the MTH induction reaction over HZSM-5 and HSAPO-34 catalysts[J]. MOLECULAR CATALYSIS,2017,433:20-27.
APA Zhou, You,Qi, Liang,Wei, Yingxu,&Liu, Zhongmin.(2017).Comparative investigation of the MTH induction reaction over HZSM-5 and HSAPO-34 catalysts.MOLECULAR CATALYSIS,433,20-27.
MLA Zhou, You,et al."Comparative investigation of the MTH induction reaction over HZSM-5 and HSAPO-34 catalysts".MOLECULAR CATALYSIS 433(2017):20-27.
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