Facile synthesis of highly active Rh/Al2O3 steam reforming catalysts with preformed support by flame spray pyrolysis
文献类型：期刊论文
| 作者 | Dittmeyer, Roland2; Yu, Jiafeng1; Zhang, Zhe1; Dallmann, Felix2; Zhang, Jixin1; Miao, Dengyun1; Xu, Hengyong1; Goldbach, Andreas1 |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2016-12-05 |
| 卷号 | 198页码:171-179 |
| 关键词 | Rh/al2o3 Flame Spray Pyrolysis Preformed Support Methane Steam Reforming Turnover Frequency |
| ISSN号 | 0926-3373 |
| DOI | 10.1016/j.apcatb.2016.05.050 |
| 文献子类 | Article |
| 英文摘要 | A highly active catalyst is a necessity for a compact microchannel membrane reactor for methane steam reforming (MSR) due to the limitation of catalyst loading per membrane area and the deliberately reduced working temperature compared to a conventional reformer. Two series of Rh/Al2O3 catalysts with nominal Rh loadings in the range of 0.2-5 wt.% were prepared by flame spray pyrolysis (FSP) using flame made and preformed support particles. For the flame made support, Rh and Al precursors were premixed and sprayed simultaneously. In the other case, the Rh precursor was mixed with a preformed boehmite particle suspension and then sprayed into the flame. Their catalytic activity was investigated for MSR in a fix-bed reactor. The nominal 1 wt.% Rh catalyst supported on preformed Al2O3 exhibited the highest CH4 conversion of all catalysts at W/F=0.374 g(cat) h/mol(CH4) and 600 degrees C. The turnover frequency (TOF) over both types of catalysts was much higher than the values of reported Rh reforming catalysts in that temperature range. In addition, the TOF values of catalysts based on preformed Al2O3 particles exceeded those over the ones with in situ formed Al2O3 by 29-39%. It is proposed that the preformed Al2O3 support promotes the catalytic activity, possibly enhancing H-2 spillover which is considered to facilitate the rate determining steps in MSR. The successful synthesis of catalysts supported by preformed materials opens new possibilities for preparation of nano-structured catalysts from a multitude of support materials via flame spray pyrolysis. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS关键词 | HYDROGEN-PRODUCTION ; CHEMICAL CONVERSION ; THERMAL-STABILITY ; ENANTIOSELECTIVE HYDROGENATION ; STRUCTURAL-PROPERTIES ; MICROCHANNEL REACTOR ; METHANE ACTIVATION ; KINETIC ASSESSMENT ; SITE REQUIREMENTS ; REACTION PATHWAYS |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000381950000019 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/170106]  |
| 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 |
| 通讯作者 | Dittmeyer, Roland; Goldbach, Andreas |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian, Peoples R China 2.Karlsruhe Inst Technol, Inst Micro Proc Engn, Karlsruhe, Germany |
| 推荐引用方式 GB/T 7714 | Dittmeyer, Roland,Yu, Jiafeng,Zhang, Zhe,et al. Facile synthesis of highly active Rh/Al2O3 steam reforming catalysts with preformed support by flame spray pyrolysis[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2016,198:171-179. |
| APA | Dittmeyer, Roland.,Yu, Jiafeng.,Zhang, Zhe.,Dallmann, Felix.,Zhang, Jixin.,...&Goldbach, Andreas.(2016).Facile synthesis of highly active Rh/Al2O3 steam reforming catalysts with preformed support by flame spray pyrolysis.APPLIED CATALYSIS B-ENVIRONMENTAL,198,171-179. |
| MLA | Dittmeyer, Roland,et al."Facile synthesis of highly active Rh/Al2O3 steam reforming catalysts with preformed support by flame spray pyrolysis".APPLIED CATALYSIS B-ENVIRONMENTAL 198(2016):171-179. |
入库方式： OAI收割
来源：大连化学物理研究所
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