CoMo/Al2O3 catalysts prepared by tailoring the surface properties of alumina for highly selective hydrodesulfurization of FCC gasoline

doi:10.1016/j.apcata.2018.10.039

	CoMo/Al2O3 catalysts prepared by tailoring the surface properties of alumina for highly selective hydrodesulfurization of FCC gasoline
	Jiang, Zongxuan 1; Zhang, Cen 1,2; Brorson, Michael 3; Li, Ping 1; Liu, Xinyi 1,2; Liu, Tiefeng 1; Li, Can 1
刊名	APPLIED CATALYSIS A-GENERAL
	2019-01-25
卷号	570 页码:84-95
关键词	Selective hydrodesulfurization Alumina Metal-support interaction MoS(2)morphology tuning Fluid catalytic cracking gasoline
ISSN号	0926-860X
DOI	10.1016/j.apcata.2018.10.039
通讯作者	Jiang, Zongxuan(zxjiang@dicp.ac.cn) ; Li, Can(canli@dicp.ac.cn)
英文摘要	Traditionally prepared CoMo/Al2O3 hydrotreating catalysts, although efficient for deep desulfurization, are not suitable for fluid catalytic cracking (FCC) gasoline hydrodesulfurization (HDS) due to their high olefin hydrogenation (HYD) activity especially when the HDS conversion is high. Herein, two alumina supports with tailored surface properties were prepared by calcination of hydrothermally treated pseudo-boehmite (PB) and hydro thermally treated gamma-Al2O3 in order to design CoMo/Al2O3 catalysts with high HDS selectivity. It is found that compared with the traditional alumina prepared by direct calcination of PB, the two tailored alumina supports have notably decreased surface area, surface hydroxyl groups and Lewis acidity. The characterization results show that the catalysts obtained from CoMo supported on the two tailored supports have lowered Mo dispersion, weakened metal-support interaction, increased Mo sulfidation degree and longer MoS2 slabs than the traditional CoMo/Al2O3 catalyst. The catalytic results of three different CoMo/Al2O3 catalysts in the HDS of a full-range FCC gasoline show that the HDS selectivity is increased remarkably (selectivity factors increase from 5.5 to 11.0) with the decreased surface area, surface hydroxyl groups and Lewis acidity of the alumina supports. Especially, CoMo supported on the tailored alumina support prepared by calcination of hydrothermally treated gamma-Al2O3 (denoted as CoMo/Al2O3-3) exhibits a 15% lower olefin HYD activity than traditional Como/Al2O3 catalyst even at the same and high HDS conversion (95%). The greatly improved HDS selectivity can be well explained by the increased slab length of supported MoS2 particles, resulting in notably decreased HYD activity catalyzed by the corner sites. Besides, CoMo/Al2O3-3 also shows superior HDS selectivity in the HDS of a real heavy FCC naphtha, where the sulfur content can be reduced from 309 ppm to 10 ppm with an accompanying RON loss of only 1.0 unit.
资助项目	Haldor Topsoe A/S company in Denmark ; United Funds of NSFC-Liaoning[U1508205]
WOS关键词	DIFFERENT CRYSTAL FORMS ; HDS CATALYSTS ; ADSORPTIVE DESULFURIZATION ; DIESEL FUEL ; PERFORMANCE ; MO ; MORPHOLOGY ; MOLYBDATE ; DIBENZOTHIOPHENE ; NANOPARTICLES
WOS研究方向	Chemistry ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000457661500009
资助机构	Haldor Topsoe A/S company in Denmark ; Haldor Topsoe A/S company in Denmark ; United Funds of NSFC-Liaoning ; United Funds of NSFC-Liaoning ; Haldor Topsoe A/S company in Denmark ; Haldor Topsoe A/S company in Denmark ; United Funds of NSFC-Liaoning ; United Funds of NSFC-Liaoning ; Haldor Topsoe A/S company in Denmark ; Haldor Topsoe A/S company in Denmark ; United Funds of NSFC-Liaoning ; United Funds of NSFC-Liaoning ; Haldor Topsoe A/S company in Denmark ; Haldor Topsoe A/S company in Denmark ; United Funds of NSFC-Liaoning ; United Funds of NSFC-Liaoning
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/166126]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Jiang, Zongxuan; Li, Can
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Haldor Topsoe Res Labs, Haldor Topsoes Alle 1, DK-2800 Lyngby, Denmark
推荐引用方式 GB/T 7714	Jiang, Zongxuan,Zhang, Cen,Brorson, Michael,et al. CoMo/Al2O3 catalysts prepared by tailoring the surface properties of alumina for highly selective hydrodesulfurization of FCC gasoline[J]. APPLIED CATALYSIS A-GENERAL,2019,570:84-95.
APA	Jiang, Zongxuan.,Zhang, Cen.,Brorson, Michael.,Li, Ping.,Liu, Xinyi.,...&Li, Can.(2019).CoMo/Al2O3 catalysts prepared by tailoring the surface properties of alumina for highly selective hydrodesulfurization of FCC gasoline.APPLIED CATALYSIS A-GENERAL,570,84-95.
MLA	Jiang, Zongxuan,et al."CoMo/Al2O3 catalysts prepared by tailoring the surface properties of alumina for highly selective hydrodesulfurization of FCC gasoline".APPLIED CATALYSIS A-GENERAL 570(2019):84-95.