Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Transformation of carbonaceous species and its influence on catalytic performance for iron-based Fischer-Tropsch synthesis catalyst | |
Ding, Mingyue1,2 ; Yang, Yong1; Wu, Baoshan1; Wang, Tiejun2; Ma, Longlong2; Xiang, Hongwei1; Li, Yongwang1
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| 2011-12-01 | |
| Source Publication | JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
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| Volume | 351Pages:165-173 |
| Abstract | Transformation behavior of carbonaceous species over a precipitated iron-based Fischer-Tropsch synthesis (FTS) catalyst was investigated by Mossbauer effect spectroscopy (MES), X-ray photoelectron spectroscopy (XPS), CO temperature-programmed desorption (CO-TPD), temperature-programmed hydrogenation (TPH), high resolution transmission electron microscopy (HRTEM) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The catalytic activities were tested in a fixed bed reactor. It was found that during carburization the fresh catalyst was firstly reduced from alpha-Fe(2)O(3) to Fe(3)O(4), accompanied simultaneously with the formation of atomic (C(alpha)) and polymeric (C(beta)) carbonaceous species on the surface of the catalyst. With time on stream the Fe(3)O(4) formed in the near-surface regions was converted gradually to chi-Fe(5)C(2), and the amounts of C(alpha) and C(beta) species presented an increasing trend. Subsequently, these species were combined partly together to form the graphitic-type (C(delta)) carbonaceous species, and the C(delta) species largely covered on the surface of iron carbides. The formation of iron carbides (especially for chi-Fe(5)C(2)), C(alpha) and C(beta) species on the surface layers promoted the catalytic activity, whereas the C(delta) species formed restrained the active sites for FTS reaction. (C) 2011 Elsevier B.V. All rights reserved. |
| Subtype | Article |
| Keyword | Transformation Behavior Iron-based Catalyst Carbonaceous Species Iron Carbides Mossbauer Effect Spectroscopy |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.1016/j.molcata.2011.10.001 |
| WOS Subject Extended | Chemistry |
| WOS Keyword | MANGANESE CATALYST ; FE CATALYSTS ; HYDROGENATION ; ACTIVATION ; REDUCTION ; SPECTROSCOPY ; BEHAVIOR ; SYNGAS |
| Indexed By | SCI |
| Language | 英语 |
| WOS Subject | Chemistry, Physical |
| WOS ID | WOS:000298127200020 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/10342 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 1.Chinese Acad Sci, State Key Lab Coal Convers, Inst Coal Chem, Taiyuan 030001, Peoples R China 2.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China |
| Recommended Citation GB/T 7714 | Ding, Mingyue,Yang, Yong,Wu, Baoshan,et al. Transformation of carbonaceous species and its influence on catalytic performance for iron-based Fischer-Tropsch synthesis catalyst[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2011,351:165-173. |
| APA | Ding, Mingyue.,Yang, Yong.,Wu, Baoshan.,Wang, Tiejun.,Ma, Longlong.,...&Li, Yongwang.(2011).Transformation of carbonaceous species and its influence on catalytic performance for iron-based Fischer-Tropsch synthesis catalyst.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,351,165-173. |
| MLA | Ding, Mingyue,et al."Transformation of carbonaceous species and its influence on catalytic performance for iron-based Fischer-Tropsch synthesis catalyst".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 351(2011):165-173. |
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