Preparation and characterization of molybdenum hydrotreating catalyst supported on MgO/Al2O3 oxide

被引:0
作者
Aberuagba, F
Kumar, M
Muralidhar, G
Sharma, LD
机构
[1] Fed Univ Technol, Dept Chem Engn, Minna, Nigeria
[2] Indian Inst Petr, Catalyst Lab, Dehra Dun 248005, Uttar Pradesh, India
关键词
hydrotreating; Mo catalyst; hydrosulpurization; hydrogenation; hydrocracking; Co catalyst;
D O I
暂无
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
A series of molybdenum catalysts supported on MgO/Al2O3 (1: 1) mixed oxide were prepared and characterized by BET surface area, X-ray diffraction, temperature programmed reduction and oxygen chemisorption. The catalytic activities for hydrodesulpurization(HDS), hydrogenation(HYD) and hydrocracking(HYC) were determined using thiophene, cyclohexene and cumene as model compounds respectively. Results indicate that at 2-8% Mo loading, the catalyst is more dispersed and crystallite growth occurred beyond this range. The optimum metal loading for maximum oxygen uptake and catalytic activities for HDS, HYD and HYC was concluded to be 8%. The order of catalytic activity for HDS, HYD and HYC was: HYD>HYC>HDS. However, the Co promoted catalyst showed remarkable increase in both the HDS and HYD activity with no significant change in HYC activity, with the following order: HDS>HYD>HYC, the optimun Co loading being 3%.
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页码:326 / 330
页数:5
相关论文
共 16 条
[1]   Preparation and characterization of MgO/Al2O3 mixed oxides support for hydrotreating catalysts [J].
Aberuagba, F ;
Kumar, M ;
Gupta, JK ;
Muralidhar, G ;
Sharma, LD .
REACTION KINETICS AND CATALYSIS LETTERS, 2002, 75 (02) :245-250
[2]   OXYGEN-UPTAKE BY SULFIDED NI-AL2O3 CATALYSTS - CORRELATION WITH ACTIVITY [J].
BACHELIER, J ;
DUCHET, JC ;
CORNET, D .
JOURNAL OF PHYSICAL CHEMISTRY, 1980, 84 (15) :1925-1928
[3]  
BRYSSE M, 1982, B SCI CHIRO BEL, V90, P1271
[4]   STUDIES OF MOLYBDENUM SULFIDE CATALYSTS .1. OXYGEN-CHEMISORPTION ON UNSUPPORTED AND SUPPORTED MOS2 [J].
FIERRO, JLG ;
TEJUCA, LG ;
AGUDO, AL ;
WELLER, SW .
JOURNAL OF CATALYSIS, 1984, 89 (01) :111-115
[5]  
Gates BC, 1979, Chemistry of Catalytic Processes
[6]   MAGNESIA SUPPORTED NI-MO SULFIDE HYDRODESULFURIZATION AND HYDRODENITROGENATION CATALYSTS PREPARED BY NONAQUEOUS IMPREGNATION [J].
HILLEROVA, E ;
VIT, Z ;
ZDRAZIL, M .
APPLIED CATALYSIS A-GENERAL, 1994, 118 (02) :111-125
[7]   New selective Mo and NiMo HDS catalysts supported on Al2O3-MgO(x) mixed oxides [J].
Klimova, T ;
Casados, DS ;
Ramirez, J .
CATALYSIS TODAY, 1998, 43 (1-2) :135-146
[8]  
Maity SK, 1998, STUD SURF SCI CATAL, V113, P579
[9]   Characterization and evaluation of ZrO2 supported hydrotreating catalysts [J].
Maity, SK ;
Rana, MS ;
Srinivas, BN ;
Bej, SK ;
Dhar, GM ;
Rao, TSRP .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 153 (1-2) :121-127
[10]  
MURALIDHAR G, 1993, CATAL LETT, V22, P351