Mechanism of the Mn Promoter via CoMn Spinel for Morphology Control: Formation of Co2C Nanoprisms for Fischer-Tropsch to Olefins Reaction

doi:10.1021/acscatal.7b02144

	Mechanism of the Mn Promoter via CoMn Spinel for Morphology Control: Formation of Co2C Nanoprisms for Fischer-Tropsch to Olefins Reaction
	Li, Zhenjia 1,2; Lin, Tiejun 2; Yu, Fei 2,3; An, Yunlei 2,4; Dai, Yuanyuan 2,3; Li, Shenggang2,5 ; Zhong, Liangshu2 ; Wang, Hui 2; Gao, Peng 2; Sun, Yuhan2,5 ; He, Mingyuan 1
	2017-12
发表期刊	ACS CATALYSIS
ISSN	2155-5435
卷号	7 期号:12 页码:8023-8032
发表状态	已发表
DOI	10.1021/acscatal.7b02144
摘要	The Fischer-Tropsch to olefins (FTO) reaction over Co2C catalysts is structure-sensitive, as the catalytic performance is strongly influenced by the surface structure of the active phase. The exposed facets determine the surface structure, and it remains a great challenge to precisely control the particle morphology of the FTO active phase. In this study, the controlling effect of the Mn promoter on the final morphology of the Co2C nanoparticles for the FTO reaction was investigated. The unpromoted catalyst and several promoted catalysts with Ce, La, and Al were also studied for comparison. For the Mn-promoted catalysts, the combination method of the Co and Mn components plays a crucial role in the final morphology of Co2C and thus the catalytic performance. For the CoMn catalyst prepared by coprecipitation, Co2C nanoprisms with specifically exposed facets of (101) and (020) can be obtained, which exhibit a promising FTO catalytic performance with high C2-4 selectivity, low methane selectivity, and high activity under mild reaction conditions. However, for the Mn/Co catalyst prepared via impregnation, Co2C nanospheres are formed, which exhibit high methane selectivity, low C-2-4(=) selectivity, and low activity. For the unpromoted catalyst and the catalysts promoted by Ce and La, Co2C nanospheres are also obtained, with catalytic performance similar to that of the Mn/Co catalyst prepared via impregnation. Due to the high stability of the Co2AlOx, composite oxide, no Co2C phase can be formed for the catalyst promoted by Al.
关键词	Fischer-Tropsch Fischer-Tropsch to olefins syngas cobalt carbide facet effect manganese promoter
收录类别	SCI ; EI
语种	英语
资助项目	Chinese Academy of Sciences[QYZDB-SSW-SLH035]
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000417230500001
出版者	AMER CHEMICAL SOC
EI入藏号	20174904503986
EI主题词	Aluminum ; Aluminum compounds ; Binary alloys ; Carbides ; Catalysts ; Cobalt alloys ; Impregnation ; Lanthanum compounds ; Manganese ; Methane ; Morphology ; Nanospheres ; Nanostructures ; Olefins ; Surface structure
EI分类号	Aluminum:541.1 ; Manganese and Alloys:543.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Nanotechnology:761 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Solid State Physics:933
WOS关键词	SUPPORTED IRON CATALYSTS ; SYNTHESIS GAS ; COBALT CATALYSTS ; CARBON NANOTUBES ; MANGANESE OXIDE ; STEM-EELS ; SODIUM ; HYDROGENATION ; PERFORMANCE ; SELECTIVITY
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/14304
专题	物质科学与技术学院_特聘教授组_李圣刚组物质科学与技术学院_特聘教授组_孙予罕组物质科学与技术学院_特聘教授组_钟良枢组
通讯作者	Zhong, Liangshu; Sun, Yuhan
作者单位	1.East China Normal Univ, Sch Chem & Mol Engn, Shanghai 200062, Peoples R China 2.Chinese Acad Sci, Shanghai Adv Res Inst, CAS Key Lab Low Carbon Convers Sci & Engn, Shanghai 201210, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China 5.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Li, Zhenjia,Lin, Tiejun,Yu, Fei,et al. Mechanism of the Mn Promoter via CoMn Spinel for Morphology Control: Formation of Co2C Nanoprisms for Fischer-Tropsch to Olefins Reaction[J]. ACS CATALYSIS,2017,7(12):8023-8032.
APA	Li, Zhenjia.,Lin, Tiejun.,Yu, Fei.,An, Yunlei.,Dai, Yuanyuan.,...&He, Mingyuan.(2017).Mechanism of the Mn Promoter via CoMn Spinel for Morphology Control: Formation of Co2C Nanoprisms for Fischer-Tropsch to Olefins Reaction.ACS CATALYSIS,7(12),8023-8032.
MLA	Li, Zhenjia,et al."Mechanism of the Mn Promoter via CoMn Spinel for Morphology Control: Formation of Co2C Nanoprisms for Fischer-Tropsch to Olefins Reaction".ACS CATALYSIS 7.12(2017):8023-8032.