Effect of Oxide Phase of Promoters on Coke Resistance over Pt/gamma-Al2O3 Catalyst
文献类型：期刊论文
| 作者 | Yu Jiafeng1,3; Fang Wen1,3; Ge Qingjie1; Xu Hengyong1,2 |
| 刊名 | chinese journal of catalysis
 |
| 出版日期 | 2011-08-01 |
| 卷号 | 32期号:8页码:1364-1369 |
| 关键词 | metal oxide platinum alumina cyclohexane dehydrogenation coke resistance |
| 英文摘要 | the effects of different promoters on coke deposition over pt/al2o3 catalyst for hydrogen-free cyclohexane dehydrogenation were investigated by catalytic tests and a series of analytical techniques such as x-ray diffraction, co and h-2 chemisorption, temperature-programmed desorption of nh3, and temperature-programmed reduction. the stability of different promoters modified catalysts is in the order of zr-pt/al2o3 > ca-pt/al2o3 > ce-pt/al2o3 > zn-pt/al2o3 > ba-pt/al2o3. the results clearly show that the addition of promoters to the pt/al2o3 catalyst could inhibit coke deposition by increasing pt dispersion and promoting hydrogen spillover. that is attributed to the high thermodynamic and chemical stability of the metal oxide promoters. they must be highly dispersed and stable without reacting with al2o3 in calcination or forming alloy with pt in reduction. the catalytic property of cala-pt/al2o3 is worse than either ca-pt/al2o3 or la-pt/al2o3 because the acidity of catalyst is enhanced and the spillover hydrogen is reduced due to ca-la strong interaction. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | liquid organic hydrides ; spray-pulsed conditions ; propane dehydrogenation ; heterogeneous catalysis ; alkane dehydrogenation ; platinum catalysts ; seasonal storage ; cyclohexane ; performance ; hydrogen |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000294314000009 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/142589]  |
| 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 116023, Liaoning, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu Jiafeng,Fang Wen,Ge Qingjie,et al. Effect of Oxide Phase of Promoters on Coke Resistance over Pt/gamma-Al2O3 Catalyst[J]. chinese journal of catalysis,2011,32(8):1364-1369. |
| APA | Yu Jiafeng,Fang Wen,Ge Qingjie,&Xu Hengyong.(2011).Effect of Oxide Phase of Promoters on Coke Resistance over Pt/gamma-Al2O3 Catalyst.chinese journal of catalysis,32(8),1364-1369. |
| MLA | Yu Jiafeng,et al."Effect of Oxide Phase of Promoters on Coke Resistance over Pt/gamma-Al2O3 Catalyst".chinese journal of catalysis 32.8(2011):1364-1369. |
入库方式： OAI收割
来源：大连化学物理研究所
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