Temperature-programmed desorption of CO and NO over gamma-Mo2N
文献类型：期刊论文
| 作者 | Yang, SW; Li, YX; Ji, CX; Li, C; Xin, Q |
| 刊名 | journal of catalysis
 |
| 出版日期 | 1998-02-15 |
| 卷号 | 174期号:1页码:34-42 |
| 关键词 | gamma-Mo2N temperature-programmed desorption CO NO chemisorption coordinatively unsaturated sites hydrogen |
| 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. |
| 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 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000072344700004 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/138127]  |
| 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.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. |
入库方式： OAI收割
来源：大连化学物理研究所
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