DICP OpenIR
Temperature-programmed desorption of CO and NO over gamma-Mo2N
Yang, SW; Li, YX; Ji, CX; Li, C; Xin, Q
关键词Gamma-mo2n Temperature-programmed Desorption Co No Chemisorption Coordinatively Unsaturated Sites Hydrogen
刊名JOURNAL OF CATALYSIS
1998-02-15
174期:1页:34-42
收录类别SCI
文章类型Article
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]TRANSITION-METAL CARBIDES ; MOLYBDENUM NITRIDE CATALYSTS ; SURFACE-AREA ; NMR-SPECTROSCOPY ; NH3 ; HYDRODENITROGENATION ; MO(100) ; OXIDE ; MO2N ; DECOMPOSITION
英文摘要The temperature-programmed desorption-mass spectroscopy technique has been used to characterize the desorption behaviors of adsorbed CO and NO on gamma-Mo2N. It has been found that adsorbed CO is desorbed with a prominent peak at 383 K and a shoulder at 423 K, without evidence of any decomposition. This suggests that the aggressive adsorption of molybdenum toward CO has been modified considerably by nitridation to resemble the properties of the Group WI metals. After synthesis there is some NH3 left on the Mo2N sample, which decomposes upon heating and the hydrogen liberated helps reduce the sample to certain extents, according to the conditions employed. Reducing the sample with hydrogen at high temperatures can produce coordinatively unsaturated sites of Mo whose number and nature are important to the interaction between the sample and CO and NO. Three types of active sites on the reduced Mo2N to adsorb NO with low, medium, and high adsorption energies have been found, from which NO is desorbed at 393, 503, and 543 K, respectively. In addition to NO, N-2 and N2O were detected as desorption products, which suggests that adsorbed NO undergoes decomposition and disproportionation reactions under appropriate conditions. The results of NO adsorbed on H-2-preadsorbed Mo2N show that the adsorption and reaction of NO on the sample is very much affected by preadsorbed hydrogen dosed at 673 K. The reactions between the reversely migrated hydrogen and the other surface species have also been discussed. (C) 1998 Academic Press.
语种英语
WOS记录号WOS:000072344700004
引用统计
被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138127
专题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.Univ Liverpool, Leverhulme Ctr Innovat Catalysis, Liverpool L69 3BX, Merseyside, England
3.Univ Liverpool, IRC, Liverpool L69 3BX, Merseyside, England
推荐引用方式
GB/T 7714
Yang, SW,Li, YX,Ji, CX,et al. Temperature-programmed desorption of CO and NO over gamma-Mo2N[J]. JOURNAL OF CATALYSIS,1998,174(1):34-42.
APA Yang, SW,Li, YX,Ji, CX,Li, C,&Xin, Q.(1998).Temperature-programmed desorption of CO and NO over gamma-Mo2N.JOURNAL OF CATALYSIS,174(1),34-42.
MLA Yang, SW,et al."Temperature-programmed desorption of CO and NO over gamma-Mo2N".JOURNAL OF CATALYSIS 174.1(1998):34-42.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Yang, SW]的文章
[Li, YX]的文章
[Ji, CX]的文章
百度学术
百度学术中相似的文章
[Yang, SW]的文章
[Li, YX]的文章
[Ji, CX]的文章
必应学术
必应学术中相似的文章
[Yang, SW]的文章
[Li, YX]的文章
[Ji, CX]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。