High-temperature steam reforming of methanol over ZnO-Al2O3 catalysts

	High-temperature steam reforming of methanol over ZnO-Al2O3 catalysts
	Yang, Mei 1,2; Li, Shulian 1; Chen, Guangwen 1
刊名	applied catalysis b-environmental
	2011-01-14
卷号	101 期号:3-4 页码:409-416
关键词	Methanol steam reforming Microreactor Hydrogen ZnO-Al2O3 CO formation
ISSN号	待补充
通讯作者	陈光文
产权排序	1,1
中文摘要	high-temperature steam reforming of methanol over zno-al2o3 catalysts
英文摘要	in this study, a series of zno-al2o3 catalysts with various zno/(zno + al2o3) molar ratios have been evaluated for the high-temperature steam reforming of methanol, and the optimizing catalyst composition consists in the range of 0.50-0.67. the catalysts were characterized by n-2 adsorption-desorption, x-ray diffraction and uv-vis spectra. in the case of zno/(zno + al2o3)> 0.5, a significant proportion of zn could dissolve in znal2o4, resulting in zn-rich non-stoichiometric spine!, in which the zn2+ ions located both at the tetrahedral and octahedral sites. it was noticed that such a coordination of zn2+ ions in the octahedral position brought about a higher co selectivity. further investigation illuminated water gas shift and methanol decomposition reaction were both involved in the formation of co. there was no noticeable deactivation for zno-al2o3 with the zno/(zno+ al2o3) molar ratio of 0.50 during the 200h continuous operation (ghsv= 17930 h(-1), t=420 degrees c). the h-2 space time yield is 55 lh(-1)g(cat)(-1) and the concentration of co in the dry gaseous products was lower than 0.8%. (c) 2010 elsevier b.v. all rights reserved.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; engineering, environmental ; engineering, chemical
研究领域[WOS]	chemistry ; engineering
关键词[WOS]	photocatalytic activity ; cu/zno/al2o3 catalysts ; hydrogen-production ; zinc aluminate ; decomposition ; spinel ; zno ; reactor ; dehydrogenation ; precipitation
收录类别	SCI
语种	英语
WOS记录号	WOS:000287068400029
公开日期	2012-07-09
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/115172]
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, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Mei,Li, Shulian,Chen, Guangwen. High-temperature steam reforming of methanol over ZnO-Al2O3 catalysts[J]. applied catalysis b-environmental,2011,101(3-4):409-416.
APA	Yang, Mei,Li, Shulian,&Chen, Guangwen.(2011).High-temperature steam reforming of methanol over ZnO-Al2O3 catalysts.applied catalysis b-environmental,101(3-4),409-416.
MLA	Yang, Mei,et al."High-temperature steam reforming of methanol over ZnO-Al2O3 catalysts".applied catalysis b-environmental 101.3-4(2011):409-416.