Catalytic activities of K-modified zeolite ZSM-5 supported rhodium catalysts in low-temperature steam reforming of bioethanol
文献类型：期刊论文
| 作者 | Lang, Lin1 ; Zhao, Shuheng1,2; Yin, Xiuli1; Yang, Wenshen1; Wu, Chuangzhi1
|
| 刊名 | international journal of hydrogen energy
 |
| 出版日期 | 2015-08-24 |
| 卷号 | 40期号:32页码:9924-9934 |
| 关键词 | Hydrogen production Stream reforming of bioethanol Zeolite ZSM-5 Modification Rh-based catalysts |
| 英文摘要 | recently, zeolite materials have attracted attention as efficient catalysts for low-temperature steam reforming of bioethanol (sre). however, cost-effective zeolite zsm-5 materials, one of the most popular industrial reforming catalysts, were rarely reported for sre. in this study, low-load rhodium (rh) catalysts are prepared using commercial high-silica zeolite zsm-5 as the supports. the commercial zeolite zsm-5 has strong acidic sites that lead to fairly extensive dehydration of bioethanol. to generate basic sites and mesoporous structure, zeolite supports are modified by k ion exchange and alkali treatment. the effect of the physicochemical properties of the modified supports on low-temperature sre reaction is investigated by sem, tem, xrd, xrf, tpd, nmr and n-2 adsorption. the results indicate that strong acidic sites in zeolite zsm-5 can be effectively neutralized by k ion exchange, while basic sites in zeolite zsm-5 are noticeably altered only by alkali treatment. the hydrogen selectivity can be significantly promoted by the alkalinity of the zeolite kzsm-5, however, only the moderate alkali-treated rh/s2 catalyst retains its high activity during reaction. our results appear to demonstrate the positive effect of the special zeolitic structure of the rh/52 catalyst with uniform mesopores, which can improve the rh dispersion and avoid its sintering. moreover, there seem to be a unique synergy between the rh active component and the alkali-treated zeolite support, which might result in the lowest co selectivity at 300-400 degrees c. copyright (c) 2015, hydrogen energy publications, llc. published by elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; electrochemistry ; energy & fuels |
| 研究领域[WOS] | chemistry ; electrochemistry ; energy & fuels |
| 关键词[WOS] | hydrogen-production ; produce hydrogen ; ethanol ; transportation ; biomass ; fuels ; ni |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000359030100007 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/10839]  |
| 专题 | 中国科学院广州能源研究所 |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lang, Lin,Zhao, Shuheng,Yin, Xiuli,et al. Catalytic activities of K-modified zeolite ZSM-5 supported rhodium catalysts in low-temperature steam reforming of bioethanol[J]. international journal of hydrogen energy,2015,40(32):9924-9934. |
| APA | Lang, Lin,Zhao, Shuheng,Yin, Xiuli,Yang, Wenshen,&Wu, Chuangzhi.(2015).Catalytic activities of K-modified zeolite ZSM-5 supported rhodium catalysts in low-temperature steam reforming of bioethanol.international journal of hydrogen energy,40(32),9924-9934. |
| MLA | Lang, Lin,et al."Catalytic activities of K-modified zeolite ZSM-5 supported rhodium catalysts in low-temperature steam reforming of bioethanol".international journal of hydrogen energy 40.32(2015):9924-9934. |
入库方式： OAI收割
来源：广州能源研究所
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