Fischer-Tropsch synthesis to light olefins over iron-based catalysts supported on KMnO4 modified activated carbon by a facile method

doi:10.1016/j.apcata.2017.05.001

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	Fischer-Tropsch synthesis to light olefins over iron-based catalysts supported on KMnO4 modified activated carbon by a facile method
	Tian, Zhipeng 1,2; Wang, Chenguang 1; Si, Zhan 1,3; Ma, Longlong1 ; Chen, Lungang 1; Liu, Qiying1 ; Zhang, Qi1 ; Huang, Hongyu 1
刊名	APPLIED CATALYSIS A-GENERAL
	2017-07-05
卷号	541 页码:50-59
关键词	Fischer-tropsch Synthesis Light Olefins Kmno4 Pretreatment
DOI	10.1016/j.apcata.2017.05.001
文献子类	Article
英文摘要	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.
WOS关键词	FE-MN ; NANOTUBES ; OXIDE ; PERFORMANCE ; CO ; HYDROCARBONS ; CONVERSION ; REDUCTION ; PROMOTION ; HYDROGEN
语种	英语
WOS记录号	WOS:000403992300007
资助机构	NSFC (Natural Science Foundation of China)(51476175) ; National Key basic Research Program of China (973 program)(2013BC228105) ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/14158]
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, 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
推荐引用方式 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.