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题名: Influence of support on the catalytic properties of Pt-Sn-K/theta-Al2O3 for propane dehydrogenation
作者: Shi, Yu1, 2;  Li, Xianru1, 2;  Rong, Xin1, 2;  Gu, Bin1, 2;  Wei, Huangzhao1;  Sun, Chenglin1
刊名: RSC ADVANCES
发表日期: 2017
DOI: 10.1039/c7ra02141k
卷: 7, 页:19841-19848
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: A study on the performance of Pt(0.3 wt%) Sn(0.2 wt%) K(0.5 wt%) catalysts supported on four different theta-Al2O3 for propane dehydrogenation is reported in this study. The theta-Al2O3 used as supports were prepared by four different methods as (a) calcination of the commercial gamma-Al2O3 at 1223 K for 12 h, (b) synthesis by hydrochloric acid reflux method, (c) precipitation of Al(NO3)(3)center dot 9H(2)O with ammonia solution and (d) extrusion use pseudo-boehmite powder, respectively. They were characterized by using XRD, BET, SEM, H-2-TPR, NH3-TPD, CO-chemisorption, XPS and TG-DTA methods to study which characteristics of the carrier will affect the performance of the catalyst. The results show that high acidity and strong interactions of the Sn support can improve the propane dehydrogenation activity of the catalyst, large pore volume and large pore diameter can enhance the stability of the catalyst. Al2O3 synthesized by method (b) has the largest pore volume, pore diameter, relatively high surface acidity and strong interaction with Sn, which meant the catalyst with the support prepared by method (b) showed the highest propane conversion and superior selectivity. The average conversion is 38.6% and the average selectivity is 95.2% during the reaction time of 25 h.
关键词[WOS]: N-BUTANE DEHYDROGENATION ;  ISOBUTANE DEHYDROGENATION ;  POTASSIUM ADDITION ;  GAMMA-ALUMINA ;  REFORMING CATALYSTS ;  GRAFTING ALKOXIDES ;  COMMON SUPPORTS ;  METALLIC PHASE ;  PTSN CATALYSTS ;  PERFORMANCE
语种: 英语
WOS记录号: WOS:000399242100047
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152332
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Shi, Yu,Li, Xianru,Rong, Xin,et al. Influence of support on the catalytic properties of Pt-Sn-K/theta-Al2O3 for propane dehydrogenation[J]. RSC ADVANCES,2017,7:19841-19848.
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