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Characterizations and product distribution of Co-based Fischer-Tropsch catalysts: A comparison of the incorporation manner
Li, Zhuo1,3; Wu, Liyang2,3; Han, Dezhi3; Wu, Jinhu3
2018-05-15
Source PublicationFUEL
ISSN0016-2361
Volume220Pages:257-263
AbstractCo-based catalysts supported on SBA-15 and ZSM-5 were prepared by various incorporation manners and evaluated for the Fischer-Tropsch synthesis (FTS). The weight ratio of SBA-15 and ZSM-5 were 1:1 and Co had a constant loading of 15 wt% in all of the finished catalysts. Their physicochemical properties and catalytic performance were investigated by the N-2 adsorption-desorption, XRD, TEM, XPS, NH3-TPD, H-2-TPR, H-2-O-2 titration, H-2-chemisorption and in a high pressure fixed-bed reactor, respectively. Characterizations indicated that the main cobalt species was Co3O4 with small crystal size and high dispersion on the catalysts with SBA-15 as support, while the CoO with strong interaction with the support, as well as large particle size and low dispersion of Co3O4 was observed on the ZSM-5 supported catalyst. It was found that the catalysts with SBA-15 as main support displayed superior CO conversion (85-90%) than the catalysts with Co species mostly deposited on the ZSM-5 support (similar to 70%), which was arise from the easy reduction of Co3O4 with weak interaction with SBA-15 support. The consecutive hydrocracking of Co/SBA-15 primary hydrocarbons facilitated the formation of C-5-C-11 on the Co/S15 + Z5 catalyst with medium acid site, accordingly the selectivity of the C-5-C-11 hydrocarbons was enhanced from 51% to 62% in the liquid hydrocarbons. The optimum dispersion of Co3O4 and Co2+/Co3+ ratio on the Co/(S15 + Z5) catalyst facilitated the product distributions shifting to C-12-C-22 with the increased selectivity from 41% to 52%. Furthermore, The superior catalytic stability for Co/(S15 + Z5) could be attributed to the synergistic effect of hydrogenolysis and cracking, which suppressed the coke deposition.
SubtypeArticle
KeywordFischer-tropsch Synthesis Product Distribution Incorporation Manner Sba-15 Zsm-5
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.fuel.2018.02.004
WOS KeywordSUPPORTED COBALT CATALYSTS ; MESOPOROUS SILICA ; LOWER OLEFINS ; SELECTIVE CONVERSION ; PORE STRUCTURE ; SYNTHESIS GAS ; DIESEL FUEL ; REDUCIBILITY ; PERFORMANCE ; ALUMINA
Indexed BySCI
Language英语
WOS Research AreaEnergy & Fuels ; Engineering
Funding OrganizationNational Natural Science Foundation of China(21706140) ; Shandong Provincial Natural Science Foundation of China(ZR2017BB039)
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000429419600028
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/10742
Collection热化学转化研究组
Corresponding AuthorLi, Zhuo
Affiliation1.Qingdao Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Marine Biomass Fiber Mat &, 308 Ningxia Rd, Qingdao 266071, Peoples R China
2.Shenwu Technol Grp Corp, Beijing 102200, Peoples R China
3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhuo,Wu, Liyang,Han, Dezhi,et al. Characterizations and product distribution of Co-based Fischer-Tropsch catalysts: A comparison of the incorporation manner[J]. FUEL,2018,220:257-263.
APA Li, Zhuo,Wu, Liyang,Han, Dezhi,&Wu, Jinhu.(2018).Characterizations and product distribution of Co-based Fischer-Tropsch catalysts: A comparison of the incorporation manner.FUEL,220,257-263.
MLA Li, Zhuo,et al."Characterizations and product distribution of Co-based Fischer-Tropsch catalysts: A comparison of the incorporation manner".FUEL 220(2018):257-263.
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