Promotional effect of Ru on the dehydrogenation and aromatization of methane in the absence of oxygen over Mo/HZSM-5 catalysts

	Promotional effect of Ru on the dehydrogenation and aromatization of methane in the absence of oxygen over Mo/HZSM-5 catalysts
	Shu, YY; Xu, YD; Wong, ST; Wang, LS; Guo, XX
刊名	JOURNAL OF CATALYSIS
	1997-08-01
卷号	170 期号:1 页码:11-19
ISSN号	0021-9517
文献子类	Article
英文摘要	A reaction rate of methane conversion of 14.54 nmol(-1) m(-2) and the formation rate of aromatics of 2.22 nmol(-1) m(-2) at 973 K for the dehydrogenation and aromatization of methane in the absence of oxygen was attained over Mo-Ru/HZSM-5 catalysts. Ey comparison, over unpromoted Mo/HZSM-5 catalysts, the reaction rate of methane conversion was 10.17 nmol(-1) m(-2) and the formation rate of aromatics was 1.52 nmol(-1) m(-2). The Ru-promoted Mo/HZSM-5 catalysts also show better stability. The catalyst with 2% Mo loading and with Mo/Ru atomic ratio ranging from 3 to 7 shows much better catalytic performance. NH3-TPD shows that the addition of Ru onto 2Mo/HZSM-5 causes a further decrease in the amount of strong acid sites and at the same time, creates new acid sites with moderate acid strengths. TPR and DTA studies illustrate that the existence of Ru with a proper dispersion promotes the reduction of Mo species and the splitting of the C-H bond of methane. (C) 1997 Academic Press.
WOS关键词	ZEOLITE CATALYSTS
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS
WOS记录号	WOS:A1997XR04400002
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/168148]
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	CHINESE ACAD SCI,DALIAN INST CHEM PHYS,STATE KEY LAB CATALYSIS,DALIAN 116023,PEOPLES R CHINA
推荐引用方式 GB/T 7714	Shu, YY,Xu, YD,Wong, ST,et al. Promotional effect of Ru on the dehydrogenation and aromatization of methane in the absence of oxygen over Mo/HZSM-5 catalysts[J]. JOURNAL OF CATALYSIS,1997,170(1):11-19.
APA	Shu, YY,Xu, YD,Wong, ST,Wang, LS,&Guo, XX.(1997).Promotional effect of Ru on the dehydrogenation and aromatization of methane in the absence of oxygen over Mo/HZSM-5 catalysts.JOURNAL OF CATALYSIS,170(1),11-19.
MLA	Shu, YY,et al."Promotional effect of Ru on the dehydrogenation and aromatization of methane in the absence of oxygen over Mo/HZSM-5 catalysts".JOURNAL OF CATALYSIS 170.1(1997):11-19.