Methane dehydroaromatization under nonoxidative conditions over Mo/HZSM-5 catalysts: Identification and preparation of the Mo active species

	Methane dehydroaromatization under nonoxidative conditions over Mo/HZSM-5 catalysts: Identification and preparation of the Mo active species
	Liu, HM ; Bao, XH ; Xu, YD
刊名	journal of catalysis
	2006-04-25
卷号	239 期号:2 页码:441-450
关键词	methane aromatization ZSM-5 molybdenum reduction
通讯作者	徐奕德
产权排序	1;1
英文摘要	complete reduction of mo species interacting strongly with a hzsm-5 zeolite support in methane is difficult. and the reduction product, mocxoy, is a key active species in methane dehydroaromatization (mda) under nonoxidative conditions. pretreatment in h-2 at 623 k could lead to topotactic transformation of the mo species from hexagonally close packing (hcp) to face-centered cubic (fee) structures; the fee mocxoy species are more active and more stable than the hcp mocxoy in mda. after initial h-2 pretreatment at 623 k, followed by a ch4-treatment, the mo species on a moo3/hzsm-5 catalyst prepared by mechanical mixing was reduced and carburized to form fee alpha-moc1-x species on the extra surface of the zeolite. methane molecules activated by the alpha-moc1-x were converted mainly into carbon deposits instead of benzene. both the most active mo species and the neighboring bronsted acid sites are essential in obtaining a perfect catalyst in the reaction of mda. (c) 2006 elsevier inc. all rights reserved.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; engineering, chemical
研究领域[WOS]	chemistry ; engineering
关键词[WOS]	electron-paramagnetic resonance ; ray photoelectron-spectroscopy ; ion zsm-5 zeolites ; dehydro-aromatization ; supported molybdenum ; carbonaceous deposits ; hzsm-5 zeolite ; conversion ; benzene ; dehydrogenation
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000236890200021
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/93749]
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, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Tsing Hua Univ, Dept Chem, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Liu, HM,Bao, XH,Xu, YD. Methane dehydroaromatization under nonoxidative conditions over Mo/HZSM-5 catalysts: Identification and preparation of the Mo active species[J]. journal of catalysis,2006,239(2):441-450.
APA	Liu, HM,Bao, XH,&Xu, YD.(2006).Methane dehydroaromatization under nonoxidative conditions over Mo/HZSM-5 catalysts: Identification and preparation of the Mo active species.journal of catalysis,239(2),441-450.
MLA	Liu, HM,et al."Methane dehydroaromatization under nonoxidative conditions over Mo/HZSM-5 catalysts: Identification and preparation of the Mo active species".journal of catalysis 239.2(2006):441-450.