Mechanism of the Mn Promoter via CoMn Spinel for Morphology Control: Formation of Co2C Nanoprisms for Fischer-Tropsch to Olefins Reaction
Li, Zhenjia1,2; Lin, Tiejun2; Yu, Fei2,3; An, Yunlei2,4; Dai, Yuanyuan2,3; Li, Shenggang2,5; Zhong, Liangshu2; Wang, Hui2; Gao, Peng2; Sun, Yuhan2,5; He, Mingyuan1
2017-12
Source PublicationACS CATALYSIS
ISSN2155-5435
Volume7Issue:12Pages:8023-8032
Status已发表
DOI10.1021/acscatal.7b02144
AbstractThe 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.
KeywordFischer-Tropsch Fischer-Tropsch to olefins syngas cobalt carbide facet effect manganese promoter
Indexed BySCI ; EI
Language英语
Funding ProjectChinese Academy of Sciences[QYZDB-SSW-SLH035]
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000417230500001
PublisherAMER CHEMICAL SOC
EI Accession Number20174904503986
EI KeywordsAluminum ; Aluminum compounds ; Binary alloys ; Carbides ; Catalysts ; Cobalt alloys ; Impregnation ; Lanthanum compounds ; Manganese ; Methane ; Morphology ; Nanospheres ; Nanostructures ; Olefins ; Surface structure
EI Classification NumberAluminum: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 KeywordSUPPORTED IRON CATALYSTS ; SYNTHESIS GAS ; COBALT CATALYSTS ; CARBON NANOTUBES ; MANGANESE OXIDE ; STEM-EELS ; SODIUM ; HYDROGENATION ; PERFORMANCE ; SELECTIVITY
Original Document TypeArticle
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://kms.shanghaitech.edu.cn/handle/2MSLDSTB/14304
Collection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
Corresponding AuthorZhong, Liangshu; Sun, Yuhan
Affiliation1.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
Corresponding Author AffilicationSchool of Physical Science and Technology
Recommended Citation
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.
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