Methane dehydroaromatization with periodic CH4-H-2 switch: A promising process for aromatics and hydrogen

	Methane dehydroaromatization with periodic CH4-H-2 switch: A promising process for aromatics and hydrogen
	Sun, Changyong 1,2; Fang, Guangzong 1; Guo, Xiaoguang 1; Hu, Yuanli 1; Ma, Shuqi; Yang, Tianhua 3; Han, Jie 3; Ma, Hao 1; Tan, Dali 1; Bao, Xinhe 1
刊名	journal of energy chemistry
	2015-05-01
卷号	24 期号:3 页码:257-263
关键词	methane dehydroaromatization (MDA) periodic CH4-H-2 switch long-term stability test coke deposition regeneration
英文摘要	long-term stability test of mo/hzsm-5-n catalysts (hzsm-5-n stands for nano-sized hzsm-5) in methane dehydroaromatization (mda) reaction has been performed with periodic ch4-h-2 switch at 1033-1073 k for more than 1000 h. during this test, methane conversion ranges from 13% to 16%, and mean yield to aromatics (i.e. benzene and naphthalene) exceeds 10%. n-2-physisorption, xrd, nmr and tpo measurements were performed for the used mo/hzsm-5 catalysts and coke deposition, and the results revealed that the periodic hydrogenation can effectively suppress coke deposition by removing the inert aromatic-type coke, thus ensuring mo/hzsm-5 partly maintained its activity even in the presence of large amount of coke deposition. the effect of zeolite particle size on the catalytic activity was also explored, and the results showed that the nano-sized zeolite with low diffusion resistance performed better. it is recognized that the size effect was enhanced by reaction time, and it became more remarkable in a long-term mda reaction even at a low space velocity.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; energy & fuels ; engineering, chemical
研究领域[WOS]	chemistry ; energy & fuels ; engineering
关键词[WOS]	mo/hzsm-5 catalyst ; zeolite catalysts ; 1073 k ; nonoxidative conditions ; dehydro-aromatization ; mo/hmcm-22 catalysts ; direct conversion ; operation mode ; benzene ; dehydrocondensation
收录类别	SCI
语种	英语
WOS记录号	WOS:000355786500001
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/146298]
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, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China 2.Guangdong Univ Technol, Dept Chem Engn, Guangzhou 510006, Guangdong, Peoples R China 3.Shaanxi Yanchang Petr Grp Co Ltd, Res Inst, Xian 710075, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Sun, Changyong,Fang, Guangzong,Guo, Xiaoguang,et al. Methane dehydroaromatization with periodic CH4-H-2 switch: A promising process for aromatics and hydrogen[J]. journal of energy chemistry,2015,24(3):257-263.
APA	Sun, Changyong.,Fang, Guangzong.,Guo, Xiaoguang.,Hu, Yuanli.,Ma, Shuqi.,...&Bao, Xinhe.(2015).Methane dehydroaromatization with periodic CH4-H-2 switch: A promising process for aromatics and hydrogen.journal of energy chemistry,24(3),257-263.
MLA	Sun, Changyong,et al."Methane dehydroaromatization with periodic CH4-H-2 switch: A promising process for aromatics and hydrogen".journal of energy chemistry 24.3(2015):257-263.