Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Fischer-Tropsch synthesis to light olefins over iron-based catalysts supported on KMnO4 modified activated carbon by a facile method | |
Tian, Zhipeng1,2; Wang, Chenguang1; Si, Zhan1,3; Ma, Longlong1 ; Chen, Lungang1; Liu, Qiying1; Zhang, Qi1; Huang, Hongyu1
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| 2017-07-05 | |
| Source Publication | APPLIED CATALYSIS A-GENERAL
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| Volume | 541Pages:50-59 |
| Abstract | Fischer-Tropsch synthesis to light olefins (FTO) using biomass-derived syngas is an economical and renewable way to produce olefins. By using KMnO4 as precursor, a number of low cost iron based catalysts was produced and their FTO performances were tested. Firstly, a series of KMnO4 solutions with different concentrations were used to pretreat activated carbon (AC). Support was coated uniformly by K-doped bimessite MnO2 and substantial amount of surface oxygen-containing groups and defects were obtained simultaneously. Then, iron catalysts loaded on KMnO4 modified AC support was prepared by incipient wetness impregnation method. Characterization of the catalyst showed that alpha-Fe2O3 nanoparticles were uniformly loaded on the surface of KMnO4 treated AC. The valent of manganese (IV) was then transformed into Mn (II) and Mn (III) with AC served as a reducing agent. The redox reaction during preparation leads to a lower Mn chemical valence, which makes it easier to further reduction. More defects on support after calcination procedure were also observed due to the enrichment of oxygen-containing groups, which was helpful in anchoring alpha-Fe2O3 particles and decreasing its average particle size. High-content manganese played not only as a structural promoter to anchor Fe2O3 nanoparticles, but also a H-2 adsorption competitor that decreased H-2/CO ratio over active sites to reduce the possibility of further hydrogenation of olefins. The KMnO4 modified iron catalysts exhibited high CO conversion and olefins selectivity (similar to 40%) due to the improved distribution of iron and the auxiliary functions of Mn. Residual potassium is also in favor of the formation of iron carbides to increase CO conversion. |
| Subtype | Article |
| Keyword | Fischer-tropsch Synthesis Light Olefins Kmno4 Pretreatment |
| WOS Headings | Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine |
| DOI | 10.1016/j.apcata.2017.05.001 |
| WOS Subject Extended | Chemistry ; Environmental Sciences & Ecology |
| WOS Keyword | FE-MN ; NANOTUBES ; OXIDE ; PERFORMANCE ; CO ; HYDROCARBONS ; CONVERSION ; REDUCTION ; PROMOTION ; HYDROGEN |
| Indexed By | SCI |
| Language | 英语 |
| Funding Organization | NSFC (Natural Science Foundation of China)(51476175) ; National Key basic Research Program of China (973 program)(2013BC228105) ; Chinese Academy of Sciences |
| WOS Subject | Chemistry, Physical ; Environmental Sciences |
| WOS ID | WOS:000403992300007 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/14158 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Agr Univ, Coll Engn, Minist Agr, Key Lab Clean Utilizat Technol Renewable Energy, Beijing 100083, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Tian, Zhipeng,Wang, Chenguang,Si, Zhan,et al. Fischer-Tropsch synthesis to light olefins over iron-based catalysts supported on KMnO4 modified activated carbon by a facile method[J]. APPLIED CATALYSIS A-GENERAL,2017,541:50-59. |
| APA | Tian, Zhipeng.,Wang, Chenguang.,Si, Zhan.,Ma, Longlong.,Chen, Lungang.,...&Huang, Hongyu.(2017).Fischer-Tropsch synthesis to light olefins over iron-based catalysts supported on KMnO4 modified activated carbon by a facile method.APPLIED CATALYSIS A-GENERAL,541,50-59. |
| MLA | Tian, Zhipeng,et al."Fischer-Tropsch synthesis to light olefins over iron-based catalysts supported on KMnO4 modified activated carbon by a facile method".APPLIED CATALYSIS A-GENERAL 541(2017):50-59. |
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