DICP OpenIR
Optimizing both the CoMo/Al2O3 catalyst and the technology for selectivity enhancement in the hydrodesulfurization of FCC gasoline
Zhang, Cen1,2; Liu, Xinyi1,2; Liu, Tiefeng1; Jiang, Zongxuan1; Li, Can1
Corresponding AuthorLi, Can(canli@dicp.ac.cn)
KeywordCoMo/Al2O3 MoS2 morphology tuning Recombination mercaptan Selective HDS FCC gasoline
Source PublicationAPPLIED CATALYSIS A-GENERAL
2019-04-05
ISSN0926-860X
DOI10.1016/j.apcata.2019.02.025
Volume575Pages:187-197
Funding ProjectNSFC-Liaoning[U1508205] ; Haldor Topsoe A/S
Funding OrganizationNSFC-Liaoning ; NSFC-Liaoning ; Haldor Topsoe A/S ; Haldor Topsoe A/S ; NSFC-Liaoning ; NSFC-Liaoning ; Haldor Topsoe A/S ; Haldor Topsoe A/S ; NSFC-Liaoning ; NSFC-Liaoning ; Haldor Topsoe A/S ; Haldor Topsoe A/S ; NSFC-Liaoning ; NSFC-Liaoning ; Haldor Topsoe A/S ; Haldor Topsoe A/S
WOS SubjectChemistry, Physical ; Environmental Sciences
WOS Research AreaChemistry ; Environmental Sciences & Ecology
WOS KeywordDEEP DESULFURIZATION ; SULFIDE CATALYSTS ; ACTIVE PHASES ; ALUMINA ; HDS ; PERFORMANCE ; MORPHOLOGY ; TEMPERATURE ; SUPPORTS ; ACIDITY
AbstractHerein, a series of alumina supports were prepared by rehydration-dehydration of the traditional gamma-Al2O3 under different hydrothermal temperatures. After loading CoMo species, it was found the selectivity factor of corresponding CoMo/Al2O3 catalysts was improved greatly from 1.21 to 2.51 with the increased hydrothermal temperature of alumina supports in the hydrodesulfurization (HDS) of a model fluid catalytic cracking (FCC) naphtha. The improved HDS selectivity is attributed to the weakened metal-support interaction and lowered dispersion of MoS2 particles, resulting in catalysts with larger edge-to-corner ratios of CoMoS slabs ((f(e)/f(c))(CoMo)). Besides, the recombination mercaptans formed by reaction of produced H2S and olefins were found as a big challenge to reach a high HDS conversion (S < 10 ppm) when only using the selective HDS catalyst (one-unit process). Therefore, a two-unit process has been developed by using a selective HDS catalyst to remove the most of the refractory sulfur compounds firstly, after which using another mercaptan-removing catalyst to deal with the recombination mercaptans specially. The catalytic results show that the two-unit process has a smaller olefin loss (4.38 v%) than that of one-unit process (7.08 v%) when reducing the sulfur concentration of a heavy FCC fraction to less than 10 ppm, thus resulting in a 0.7 unit less of the research octane number loss. The present work shows that high HDS conversion and low olefin hydrogenation conversion in selective HDS of FCC gasoline can be achieved through optimization design of both the selective HDS catalyst and the whole technology.
Language英语
Funding OrganizationNSFC-Liaoning ; NSFC-Liaoning ; Haldor Topsoe A/S ; Haldor Topsoe A/S ; NSFC-Liaoning ; NSFC-Liaoning ; Haldor Topsoe A/S ; Haldor Topsoe A/S ; NSFC-Liaoning ; NSFC-Liaoning ; Haldor Topsoe A/S ; Haldor Topsoe A/S ; NSFC-Liaoning ; NSFC-Liaoning ; Haldor Topsoe A/S ; Haldor Topsoe A/S
WOS IDWOS:000462801700021
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/165771
Collection中国科学院大连化学物理研究所
Corresponding AuthorLi, Can
Affiliation1.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Cen,Liu, Xinyi,Liu, Tiefeng,et al. Optimizing both the CoMo/Al2O3 catalyst and the technology for selectivity enhancement in the hydrodesulfurization of FCC gasoline[J]. APPLIED CATALYSIS A-GENERAL,2019,575:187-197.
APA Zhang, Cen,Liu, Xinyi,Liu, Tiefeng,Jiang, Zongxuan,&Li, Can.(2019).Optimizing both the CoMo/Al2O3 catalyst and the technology for selectivity enhancement in the hydrodesulfurization of FCC gasoline.APPLIED CATALYSIS A-GENERAL,575,187-197.
MLA Zhang, Cen,et al."Optimizing both the CoMo/Al2O3 catalyst and the technology for selectivity enhancement in the hydrodesulfurization of FCC gasoline".APPLIED CATALYSIS A-GENERAL 575(2019):187-197.
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