Surface chemistry and catalytic performance of chromia/alumina catalysts derived from different potassium impregnation sequences
文献类型：期刊论文
| 作者 | Liu, Daolan1; Bai, Peng1; Wu, Pingping1; Han, Dezhi2 ; Chai, Yongming1; Yan, Zifeng1
|
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2015-10-01 |
| 卷号 | 351页码:250-259 |
| 关键词 | Impregnation sequences Chromium catalysts Potassium Propane dehydrogenation |
| 英文摘要 | Chromia/alumina catalysts prepared with different K impregnation sequences were compared in the dehydrogenation of propane. The materials were characterized by a variety of techniques. The catalyst with K impregnated prior to Cr loading (sample Cr/K/Al2O3) exhibited higher propene selectivity than that prepared with the reverse impregnation sequence (sample K/Cr/Al2O3). Catalyst Cr/K/Al2O3 possesses a higher amount of surface acid sites and more readily reducible chromium species compared with catalyst K/Cr/Al2O3. The majority of chromium species were observed to exist as polymeric species on catalyst Cr/K/Al2O3, while isolated and oligomeric chromium species were mainly found on catalyst K/Cr/Al2O3. A detailed correlation between catalytic performance and characterization results demonstrated that isolated and oligomeric species possessed higher cracking and coking activities than polymeric chromium species, which may account for the difference in the propene selectivity of catalysts. (C) 2015 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter |
| 研究领域[WOS] | Chemistry ; Materials Science ; Physics |
| 关键词[WOS] | CHROMIUM-OXIDE CATALYSTS ; DIFFUSE-REFLECTANCE SPECTROSCOPY ; OXIDATIVE DEHYDROGENATION ; PROPANE DEHYDROGENATION ; ISOBUTANE DEHYDROGENATION ; RAMAN-SPECTROSCOPY ; ALUMINA CATALYSTS ; CR ; BUTANE ; DEACTIVATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000359496600033 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/6501]  |
| 专题 | 青岛生物能源与过程研究所_热化学转化事业部 |
| 作者单位 | 1.China Univ Petr, Sch Chem Engn, PetroChina Key Lab Catalysis, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Daolan,Bai, Peng,Wu, Pingping,et al. Surface chemistry and catalytic performance of chromia/alumina catalysts derived from different potassium impregnation sequences[J]. APPLIED SURFACE SCIENCE,2015,351:250-259. |
| APA | Liu, Daolan,Bai, Peng,Wu, Pingping,Han, Dezhi,Chai, Yongming,&Yan, Zifeng.(2015).Surface chemistry and catalytic performance of chromia/alumina catalysts derived from different potassium impregnation sequences.APPLIED SURFACE SCIENCE,351,250-259. |
| MLA | Liu, Daolan,et al."Surface chemistry and catalytic performance of chromia/alumina catalysts derived from different potassium impregnation sequences".APPLIED SURFACE SCIENCE 351(2015):250-259. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
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