Study of the microtextural transformation of coal char during supercritical water activation
文献类型：期刊论文
| 作者 | Zhou, Xianxian1,2; Qu, Xuan1; Zhang, Rong1; Bi, Jicheng1 |
| 刊名 | Fuel processing technology
 |
| 出版日期 | 2015-07-01 |
| 卷号 | 135页码:195-202 |
| 关键词 | Lignite Activated carbon Supercritical water Raman spectroscopy Pore texture |
| ISSN号 | 0378-3820 |
| DOI | 10.1016/j.fuproc.2015.01.039 |
| 通讯作者 | Bi, jicheng(bijc@sxicc.ac.cn) |
| 英文摘要 | Low-rank coal chars with different structures were prepared in a fixed-bed pyrolyzer. these coal chars were activated in a semi-continuous tubular supercritical water (son) reactor to produce activated carbon. raman spectra data showed that the amount of aromatic carbon increased with pyrolysis temperature. after scw activation, smaller aromatic ring units gradually disappeared in scw, while large aromatic rings in the carbon matrix evolved into the pore structure. corresponding to the results of nitrogen adsorption, different structures had different reaction rates as a result of scw exposure, which led to the production of different pore textures. one of the possible pathways in the son activation process is proposed. although there is a strong association between the ratio of cross-linked structures and bet surface area at higher pyrolysis temperatures, the texture of activated carbon is mainly related to the degree of coal conversion achieved. (c) 2015 elsevier b.v. all rights reserved. |
| WOS关键词 | VICTORIAN BROWN-COAL ; RAMAN-SPECTROSCOPY ; ELECTRON-MICROSCOPY ; MICROPOROUS CARBON ; PYROLYSIS ; GASIFICATION ; REACTIVITY ; EVOLUTION ; SOLVENT ; SURFACE |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering |
| WOS类目 | Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical |
| 语种 | 英语 |
| WOS记录号 | WOS:000355371100028 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376595 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Bi, Jicheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Xianxian,Qu, Xuan,Zhang, Rong,et al. Study of the microtextural transformation of coal char during supercritical water activation[J]. Fuel processing technology,2015,135:195-202. |
| APA | Zhou, Xianxian,Qu, Xuan,Zhang, Rong,&Bi, Jicheng.(2015).Study of the microtextural transformation of coal char during supercritical water activation.Fuel processing technology,135,195-202. |
| MLA | Zhou, Xianxian,et al."Study of the microtextural transformation of coal char during supercritical water activation".Fuel processing technology 135(2015):195-202. |
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来源：中国科学院大学
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