Effect of K Promoter on the Performance of Pt-Sn-K/gamma-Al2O3 Catalyst for n-Hexadecane Dehydrogenation
文献类型：期刊论文
| 作者 | He Songbo; Lai Yulong; Bi Wenjun; Yang Xu; Rong Xin; Sun Chenglin |
| 刊名 | chinese journal of catalysis
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 31期号:4页码:435-440 |
| 关键词 | platinum tin alkali metal long-chain paraffin dehydrogenation acidity coking |
| 英文摘要 | a pt-sn-k/gamma-al2o3 catalyst was prepared by complex impregnation under vacuum. the effect of the k promoter on the catalytic properties of the pt-sn-k/gamma-al2o3 catalyst for the dehydrogenation of long-chain paraffins to mono-olefins was investigated using n-hexadecane dehydrogenation as a test reaction. the catalyst was characterized by infrared spectroscopy of pyridine adsorption, co pulse chemisorption, temperature-programmed reduction with h-2, thermogravimetric analysis, and temperature-programmed oxidation with o-2. the results show that the addition of k decreases the interaction of snox and al2o3, promotes the reduction of snox species, and suppresses the catalyst activity for dehydrogenation. the k promoter also neutralizes the acidity and decreases the amount of strong acidic centers of the catalyst. thus, the side reactions on the catalyst are inhibited, and the selectivity for monoolefins is increased. the stability of the catalyst is slightly enhanced with the addition of k because of the increased resistance to coke formation on the catalyst. however, the synergistic effect of active sites and acidic sites is weakened by the excess addition of the k promoter, which results in a great decrease in the activity and a low stability of the catalyst. |
| 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] | chain paraffin dehydrogenation ; pt-sn catalysts ; isobutane dehydrogenation ; pt-sn/al2o3 catalysts ; metal precursors ; potassium ; behavior ; support ; lithium ; li |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000278046900013 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141721]  |
| 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 | Chinese Acad Sci, Dalian Inst Chem Phys, Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | He Songbo,Lai Yulong,Bi Wenjun,et al. Effect of K Promoter on the Performance of Pt-Sn-K/gamma-Al2O3 Catalyst for n-Hexadecane Dehydrogenation[J]. chinese journal of catalysis,2010,31(4):435-440. |
| APA | He Songbo,Lai Yulong,Bi Wenjun,Yang Xu,Rong Xin,&Sun Chenglin.(2010).Effect of K Promoter on the Performance of Pt-Sn-K/gamma-Al2O3 Catalyst for n-Hexadecane Dehydrogenation.chinese journal of catalysis,31(4),435-440. |
| MLA | He Songbo,et al."Effect of K Promoter on the Performance of Pt-Sn-K/gamma-Al2O3 Catalyst for n-Hexadecane Dehydrogenation".chinese journal of catalysis 31.4(2010):435-440. |
入库方式： OAI收割
来源：大连化学物理研究所
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