Hydrogen production by methane cracking over different coal chars
文献类型：期刊论文
| 作者 | Wei, Ling2,3; Tan, Yi-sheng2; Han, Yi-zhuo2; Zhao, Jian-tao2; Wu, Jinhu4 ; Zhang, Dongke1,2,4
|
| 刊名 | FUEL
 |
| 出版日期 | 2011-11-01 |
| 卷号 | 90期号:11页码:3473-3479 |
| 关键词 | BET Coal char Hydrogen Methane cracking Pyrolysis |
| 中文摘要 | Hydrogen production by methane cracking over a bed of different coal chars has been studied using a fixed bed reactor system operating at atmospheric pressure and 1123 K. The chars were prepared by pyrolysing four parent coals of different ranks, namely, Jincheng anthracite, Binxian bituminous coal, Xiaolongtan lignite and Shengli lignite, in nitrogen in the same fixed bed reactor operating at different pyrolysis temperatures and times. Hydrogen was the only gas-phase product detected with a GC during methane cracking. Both methane conversion and hydrogen yield decreased with increasing time on stream and pyrolysis temperature. The lower the coal rank, the greater the catalytic effect of the char. While the Shengli lignite char achieved the highest methane conversion and hydrogen yield in methane cracking amongst all chars prepared at pyrolysis temperature of 1173 K for 30 min, a higher catalytic activity was observed for the Xiaolongtan lignite char prepared at 973 K, indicating the importance of the nature of char surfaces. The catalytic activity of the coal chars were reduced by the carbon deposition. The coal chars had legible faces and sharp apertures before being subjected to methane cracking. The surfaces and pores of coal chars were covered with carbon deposits produced by methane cracking as evident in the SEM images. The results of BET surfaces areas of the coal chars revealed that the presence of micropores in the chars was not an exclusive reason for the catalytic effect of the chars in methane cracking |
| 英文摘要 | Hydrogen production by methane cracking over a bed of different coal chars has been studied using a fixed bed reactor system operating at atmospheric pressure and 1123 K. The chars were prepared by pyrolysing four parent coals of different ranks, namely, Jincheng anthracite, Binxian bituminous coal, Xiaolongtan lignite and Shengli lignite, in nitrogen in the same fixed bed reactor operating at different pyrolysis temperatures and times. Hydrogen was the only gas-phase product detected with a GC during methane cracking. Both methane conversion and hydrogen yield decreased with increasing time on stream and pyrolysis temperature. The lower the coal rank, the greater the catalytic effect of the char. While the Shengli lignite char achieved the highest methane conversion and hydrogen yield in methane cracking amongst all chars prepared at pyrolysis temperature of 1173 K for 30 min, a higher catalytic activity was observed for the Xiaolongtan lignite char prepared at 973 K, indicating the importance of the nature of char surfaces. The catalytic activity of the coal chars were reduced by the carbon deposition. The coal chars had legible faces and sharp apertures before being subjected to methane cracking. The surfaces and pores of coal chars were covered with carbon deposits produced by methane cracking as evident in the SEM images. The results of BET surfaces areas of the coal chars revealed that the presence of micropores in the chars was not an exclusive reason for the catalytic effect of the chars in methane cracking. (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 学科主题 | 热化学转化 |
| 类目[WOS] | Energy & Fuels ; Engineering, Chemical |
| 研究领域[WOS] | Energy & Fuels ; Engineering |
| 关键词[WOS] | DECOMPOSITION ; CO2 ; GASIFICATION ; GAS ; H2O ; BED |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000295734200044 |
| 公开日期 | 2014-03-27 |
| 源URL | [http://ir.qibebt.ac.cn:8080/handle/337004/1755]  |
| 专题 | 青岛生物能源与过程研究所_热化学转化事业部 |
| 作者单位 | 1.Univ Western Australia, Ctr Energy M473, Crawley, WA 6009, Australia 2.Chinese Acad Sci, Inst Coal Chem, Taiyuan 030001, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 4.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Ling,Tan, Yi-sheng,Han, Yi-zhuo,et al. Hydrogen production by methane cracking over different coal chars[J]. FUEL,2011,90(11):3473-3479. |
| APA | Wei, Ling,Tan, Yi-sheng,Han, Yi-zhuo,Zhao, Jian-tao,Wu, Jinhu,&Zhang, Dongke.(2011).Hydrogen production by methane cracking over different coal chars.FUEL,90(11),3473-3479. |
| MLA | Wei, Ling,et al."Hydrogen production by methane cracking over different coal chars".FUEL 90.11(2011):3473-3479. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。