The Unique Role of CaO in Stabilizing the Pt/Al2O3 Catalyst for the Dehydrogenation of Cyclohexane
文献类型：期刊论文
| 作者 | Yu, Jiafeng1,3; Wang, Rui2; Ren, Shiyuan2; Sun, Xiaoyan2,3; Chen, Chunlin2; Ge, Qingjie1; Fang, Wen1,3; Zhang, Jian2; Xu, Hengyong1; Su, Dang Sheng2 |
| 刊名 | chemcatchem
 |
| 出版日期 | 2012-09-01 |
| 卷号 | 4期号:9页码:1376-1381 |
| 关键词 | calcium coke dehydrogenation heterogeneous catalysis platinum |
| 英文摘要 | coke-induced deactivation is one of the major challenges in the field of heterogeneous catalysis. herein, the performance of the pt/al2o3 catalyst for the hydrogen-free dehydrogenation of cyclohexane was improved by doping with a small amount of ca. the ca-modified pt/al2o3 catalyst exhibited a cyclohexane conversion of 97.0?% and maintained a conversion above 75?% after 48 h, whilst the unmodified catalyst was deactivated from 87.0 to 2.7?% under the same conditions. characterization techniques, including in situ drift, xps, thermal analysis, and temperature-programmed techniques, revealed that the presence of ca effectively suppressed the deep dehydrogenation of h-rich carbonaceous components and promoted coke desorption by increasing the h/c ratio of h-deficient coke. this promotion effect of ca was also associated with neutralizing the residual cl ions and promoting immediate dehydrogenation. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | transform infrared-spectroscopy ; pt/gamma-al2o3 catalyst ; alkane dehydrogenation ; coke characterization ; platinum ; xps ; adsorption ; metal ; methylcyclohexane ; isomerization |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000308037400022 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/143142]  |
| 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, Dept State Key Lab Catalysis Inst, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Jiafeng,Wang, Rui,Ren, Shiyuan,et al. The Unique Role of CaO in Stabilizing the Pt/Al2O3 Catalyst for the Dehydrogenation of Cyclohexane[J]. chemcatchem,2012,4(9):1376-1381. |
| APA | Yu, Jiafeng.,Wang, Rui.,Ren, Shiyuan.,Sun, Xiaoyan.,Chen, Chunlin.,...&Su, Dang Sheng.(2012).The Unique Role of CaO in Stabilizing the Pt/Al2O3 Catalyst for the Dehydrogenation of Cyclohexane.chemcatchem,4(9),1376-1381. |
| MLA | Yu, Jiafeng,et al."The Unique Role of CaO in Stabilizing the Pt/Al2O3 Catalyst for the Dehydrogenation of Cyclohexane".chemcatchem 4.9(2012):1376-1381. |
入库方式： OAI收割
来源：大连化学物理研究所
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