Characterization of coke deposited on spent catalysts for long-chain-paraffin dehydrogenation
文献类型：期刊论文
| 作者 | He, Songbo1; Sun, Chenglin1; Yang, Xu1; Wang, Bin2; Dai, Xihai2; Bai, Ziwu2 |
| 刊名 | chemical engineering journal
 |
| 出版日期 | 2010-10-01 |
| 卷号 | 163期号:3页码:389-394 |
| 关键词 | Dehydrogenation Coke Deactivation Long chain paraffin Pt-Sn catalysts |
| 英文摘要 | the chemistry, morphology, and structure character of coke deposited on spent catalysts for long-chain-paraffin (n-c(16-19)) dehydrogenation and the effect of coke on the surface structure of the catalysts were studied by several characterization techniques: thermogravimetry/differential thermal analysis (tg-dta), elemental analysis, uv raman spectroscopy, temperature-programmed oxidation (tpo), scanning electron microscopy (sem), x-ray diffraction (xrd), brunaucr-emmett-teller (bet), mercury intrusion porosimetry (mip) and co-chemisorption. during the dehydrogenation of n-c(16-19), coke gradually accumulates on the surfaces of the catalysts while the coking rate and the h/c mole ratio of the coke decrease. after the times on stream (tos) of 960h, the coke deposition on the catalysts is up to 6.56 wt.%, and the h/c mole ratio of the coke is only 0.86. the coke is graphited or amorphous nature and contains conjugated olefinic species and polycyclic aromatic hydrocarbons (pahs). the coke causes a significant deactivation of the active sites. as compared with the fresh catalysts, the surface area, the total pore volume and the pt dispersion of the spent catalysts are decreased 19.4%, 33.3% and 61.2%. (c) 2010 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | engineering, environmental ; engineering, chemical |
| 研究领域[WOS] | engineering |
| 关键词[WOS] | pt-sn catalysts ; alkane dehydrogenation ; reforming catalysts ; deactivation ; alumina ; olefins ; pt-sn-k/al2o3 ; conversion ; chemistry ; zeolites |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000283449400028 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141917]  |
| 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 Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China 2.PetroChina Fushun Petrochem Co, Fushun 113001, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Songbo,Sun, Chenglin,Yang, Xu,et al. Characterization of coke deposited on spent catalysts for long-chain-paraffin dehydrogenation[J]. chemical engineering journal,2010,163(3):389-394. |
| APA | He, Songbo,Sun, Chenglin,Yang, Xu,Wang, Bin,Dai, Xihai,&Bai, Ziwu.(2010).Characterization of coke deposited on spent catalysts for long-chain-paraffin dehydrogenation.chemical engineering journal,163(3),389-394. |
| MLA | He, Songbo,et al."Characterization of coke deposited on spent catalysts for long-chain-paraffin dehydrogenation".chemical engineering journal 163.3(2010):389-394. |
入库方式： OAI收割
来源：大连化学物理研究所
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