Comparative study by infrared spectroscopy and microcalorimetry of the CO adsorption over supported palladium catalysts
文献类型：期刊论文
| 作者 | Guerrero-Ruiz, A; Yang, SW; Xin, Q; Maroto-Valiente, A; Benito-Gonzalez, M; Rodriguez-Ramos, I |
| 刊名 | langmuir
 |
| 出版日期 | 2000-10-17 |
| 卷号 | 16期号:21页码:8100-8106 |
| 英文摘要 | the adsorption of co on al(2)o(3), zro(2), zro(2)-sio(2), and zro(2)-la(2)o(3) supported pd catalysts was studied by adsorption microcalorimetry and infrared (tr) spectroscopy. some interesting and new correlations between the results of microcalorimetry and ir spectroscopy have been found. the co is adsorbed on palladium catalysts in three different modes: multibonded (3-fold), bridged (2-fold), both on pd(lll) and (100) planes, and linear (1-fold) adsorbed species. the corresponding differential adsorption heats lie in the field of high (210-170 kj/mol), medium (140-120 kj/mol), and low (95-60 kj/mol) values, respectively. the nature of the support, the reduction temperature, and the pretreatment conditions affect the surface structure of the pd catalysts, resulting in variations in the site energy distribution, i.e., changes in the fraction of sites adsorbing co with specific heats of adsorption. moreover, the ceo(2); promoter addition weakens the adsorption strength of co on palladium. based on the exposed results, a correctness factor, which considers the percentages of various co adsorption states, must be introduced when one calculates the pd dispersion using co adsorption data. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, multidisciplinary ; chemistry, physical ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; materials science |
| 关键词[WOS] | methane oxidation ; carbon-monoxide ; calorimetric heat ; crystallite size ; pd ; combustion ; desorption ; hydrogenation ; chemisorption ; temperature |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000089799900032 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/85089]  |
| 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.CSIC, Inst Catalisis & Petroleoquim, Madrid 28049, Spain 2.Univ Nacl Educ Distancia, Fac Ciencias, Dept Quim Inorgan & Tecn, Madrid 28040, Spain 3.Acad Sinica, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 4.Surtrey MSL, Madrid 28045, Spain |
| 推荐引用方式 GB/T 7714 | Guerrero-Ruiz, A,Yang, SW,Xin, Q,et al. Comparative study by infrared spectroscopy and microcalorimetry of the CO adsorption over supported palladium catalysts[J]. langmuir,2000,16(21):8100-8106. |
| APA | Guerrero-Ruiz, A,Yang, SW,Xin, Q,Maroto-Valiente, A,Benito-Gonzalez, M,&Rodriguez-Ramos, I.(2000).Comparative study by infrared spectroscopy and microcalorimetry of the CO adsorption over supported palladium catalysts.langmuir,16(21),8100-8106. |
| MLA | Guerrero-Ruiz, A,et al."Comparative study by infrared spectroscopy and microcalorimetry of the CO adsorption over supported palladium catalysts".langmuir 16.21(2000):8100-8106. |
入库方式： OAI收割
来源：大连化学物理研究所
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