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题名: Metathesis of ethylene and butylene-2 to propylene with Mo on H beta-Al2O3 catalysts
作者: Liu, SL;  Huang, SJ;  Xin, WJ;  Bai, J;  Xie, SJ;  Xu, LY
关键词: NH3-TPD techniques ;  Mo/(H beta-Al2O3) catalyst ;  hydrothermal treatment
刊名: CATALYSIS TODAY
发表日期: 2004-09-01
DOI: 10.1016/j.cattod.2004.06.062
卷: 93-5, 页:471-476
收录类别: ISTP ;  SCI
文章类型: Article
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
英文摘要: Reaction performance, acidic and basic properties, as well as reduction properties of various supported molybdenum catalysts for the metathesis of ethylene and butylene-2 to propylene were investigated by TPR and NH3-TPD techniques in a flow-reactor. Besides temperature, space velocity and pressure, the stability of a Mo/(Hbeta-Al2O3) catalyst is strongly affected by the Mo loading, the calcination temperature and the hydrothermal treatment conditions. A suitable molybdenum loading on HP-Al2O3 is favorable to the stability of the catalyst that possesses suitable amount of acidity, which was determined by NH3-TPD measurements. The optimum preparation conditions of the Mo/(HP-Al2O3) catalyst are as follows: molybdenum content 3 wt.%, hydrothermal treatment and calcination at 550degreesC for 2 h and 700degreesC for 2 h, respectively. Thus, the optimal catalyst of 3Mo/(Hbeta-Al2O3), designated as 3Mo/HP5502700, could keep a conversion of C4H8-2 at about 82% during 22h of reaction time-on-stream under the following conditions: N-2/C2H4 = 1.5, C2H4/C4H8-2 = 3/1, WHSV(C2H4 + C4H8-2) = 1 h(-1), T = 120degreesC, and P = 1.0 MPa. In addition, a suitable pressure, such as 0.5-1.0 MPa, and a low temperature, such as 35degreesC, are beneficial for keeping the stability of the 3Mo/HP5502700 catalyst. (C) 2004 Elsevier B.V. All rights reserved.
关键词[WOS]: MOLYBDENUM ;  RHENIUM
语种: 英语
WOS记录号: WOS:000223973200067
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138404
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, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Liu, SL,Huang, SJ,Xin, WJ,et al. Metathesis of ethylene and butylene-2 to propylene with Mo on H beta-Al2O3 catalysts[J]. CATALYSIS TODAY,2004,93-5:471-476.
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