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题名: Effect of the Calcination Temperature of the Support on the Performance of Rh-Mn-Li/SBA-15 Catalysts for CO Hydrogenation
作者: Xue Fei1, 3;  He Ji-Min4;  Chen Wei-Miao1;  Song Xian-Gen1;  Cheng Xian-Bo1;  Ding Yun-Jie1, 2
关键词: Rhodium ;  Syngas ;  CO hydrogenation ;  C2+ oxygenates ;  Calcination temperature ;  SBA-15
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2016-11-15
DOI: 10.3866/PKUMHXB201607262
卷: 32, 期:11, 页:2769-2775
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
英文摘要: Rh, Mn and Li were supported on SBA-15 samples that had been calcined at 550, 700, 800, and 900 degrees C, using an incipient co-impregnation technique. The catalytic performances of these materials were subsequently evaluated for the hydrogenation of carbon monoxide. The catalysts were characterized by means of N-2 adsorption-desorption, X-ray diffraction, transmission electron microscopy, H-2 chemisorption, and Fourier transform infrared spectroscopy. The structure of the SBA-15 support remained unchanged even after its calcination at 900 degrees C. However, the specific surface area, pore size, and total pore volume of SBA-15 decreased from 842.6 m(2). g(-1), 9.57 nm, and 1.18 cm(3).g(-1) to 246.4 m(2). g(-1) 5.62 nm, and 0.34 cm(3).g(-1), respectively, when the calcination temperature increased from 550 to 900 C. In addition, the Rh particle size increased in the range of 1.5-4.0 nm with increasing calcination temperature. Furthermore, the Rh particles showed a greater tendency towards the mesopores of support when they were calcined at high temperatures, which could be attributed to the reduced number of micropores. These changes therefore made it easier for H2 and CO to interact with the Rh particles immobilized on the supports calcined at high temperatures. High levels of activity and selectivity towards C2+ oxygenates were therefore obtained on the Rh-Mn-Li/SBA-15 prepared using the SBA-15 calcined at 900 degrees C.
关键词[WOS]: FISCHER-TROPSCH SYNTHESIS ;  RH-BASED CATALYSTS ;  CARBON-MONOXIDE ;  OXYGENATE SYNTHESIS ;  ETHANOL-PRODUCTION ;  ALCOHOL SYNTHESIS ;  DIRECT CONVERSION ;  SYNGAS ;  PROMOTION ;  NANOPARTICLES
语种: 英语
WOS记录号: WOS:000389110600015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150355
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 Provin, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning Provin, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Zhejiang Shuren Univ, Hangzhou 310015, Zhejiang, Peoples R China

Recommended Citation:
Xue Fei,He Ji-Min,Chen Wei-Miao,et al. Effect of the Calcination Temperature of the Support on the Performance of Rh-Mn-Li/SBA-15 Catalysts for CO Hydrogenation[J]. ACTA PHYSICO-CHIMICA SINICA,2016,32(11):2769-2775.
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