Sulfur exchange on Co-Mo/Al2O3 hydrodesulfurization catalyst using S-35 radioisotope tracer

被引:20
作者
Kabe, T
Qian, WH
Wang, WP
Ishihara, A
机构
[1] Department of Chemical Engineering, Tokyo Univ. of Agric. and Technology, Koganei, Tokyo 184
关键词
D O I
10.1016/0920-5861(95)00267-7
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
A commercial Co-Mo/Al2O3 catalyst was labeled with the radioisotope S-35 in hydrodesulfurization (HDS) of S-35-labeled dibenzothiophene (S-35-DBT) in a high-pressure flow reactor at 50 kg/cm(2). Then, HDS of 4-methyldibenzothiophene (4-MDBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT) or sulfur exchange of H2S were carried out on the labeled catalyst at 50 kg/cm(2) and 260-360 degrees C. The amounts of labile sulfur participating in the reaction were determined from the radioactivity of S-35-H2S released from the S-35-labeled catalyst. In the HDS reactions, the amount of labile sulfur participating in the reaction decreased in the order: DBT > 4-MDBT > 4,6-DMDBT. In the sulfur exchange reaction with H2S, the adsorption of H2S on the catalyst reached saturation above a H2S partial pressure of 0.36 kg/cm(2). It was suggested that the release of H2S from the labile sulfur may be the rate determining step of the HDS reaction.
引用
收藏
页码:197 / 202
页数:6
相关论文
共 11 条
[1]  
AMORELLI A, 1992, HYDROCARB PROCESS, V6, P93
[2]   S-35 RADIOTRACER STUDIES OF THE EFFECT OF HYDROGEN-SULFIDE ON A MOLYBDENUM-DISULFIDE CATALYST IN THE HYDROGENATION OF BUTA-1,3-DIENE [J].
CAMPBELL, KC ;
MIRZA, ML ;
THOMSON, SJ ;
WEBB, G .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1984, 80 :1689-1704
[3]   UPTAKE OF S-35 BY PD, IR, RU PROMOTED MO-OXIDE CATALYSTS AND THEIR ACTIVITY IN CYCLOHEXANOL TRANSFORMATION [J].
DOBROVOLSZKY, M ;
PAAL, Z ;
TETENYI, P .
CATALYSIS TODAY, 1991, 9 (1-2) :113-120
[4]  
GACHET CG, 1981, B SOC CHIM BELG, V90, P1279
[5]   CATALYTIC HYDRODESULFURIZATION OVER THE MO(100) SINGLE-CRYSTAL SURFACE .2. THE ROLE OF ADSORBED SULFUR AND MECHANISM OF THE DESULFURIZATION STEP [J].
GELLMAN, AJ ;
BUSSELL, ME ;
SOMORJAI, GA .
JOURNAL OF CATALYSIS, 1987, 107 (01) :103-113
[6]   DEEP DESULFURIZATION OF LIGHT OIL .2. HYDRODESULFURIZATION OF DIBENZOTHIOPHENE, 4-METHYLDIBENZOTHIOPHENE AND 4,6-DIMETHYLDIBENZOTHIOPHENE [J].
KABE, T ;
ISHIHARA, A ;
ZHANG, Q .
APPLIED CATALYSIS A-GENERAL, 1993, 97 (01) :L1-L9
[7]   STUDY OF HYDRODESULFURIZATION OF DIBENZOTHIOPHENE ON NI-MO/AL2O3, MO/AL2O3, AND NI/AL2O3 CATALYSTS BY THE USE OF RADIOISOTOPE S-35 TRACER [J].
KABE, T ;
QIAN, WH ;
ISHIHARA, A .
JOURNAL OF CATALYSIS, 1994, 149 (01) :171-180
[8]   MECHANISM OF HYDRODESULFURIZATION OF DIBENZOTHIOPHENE ON CO-MO/AL2O3 AND CO/AL2O3 CATALYST BY THE USE OF RADIOISOTOPE S-35 TRACER [J].
KABE, T ;
QIAN, WH ;
OGAWA, S ;
ISHIHARA, A .
JOURNAL OF CATALYSIS, 1993, 143 (01) :239-248
[9]   HYDRODESULFURIZATION OF SULFUR-CONTAINING POLYAROMATIC COMPOUNDS IN LIGHT OIL [J].
KABE, T ;
ISHIHARA, A ;
TAJIMA, H .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1992, 31 (06) :1577-1580
[10]   HYDRODESULFURIZATION OF THIOPHENE, BENZOTHIOPHENE, DIBENZOTHIOPHENE, AND RELATED COMPOUNDS CATALYZED BY SULFIDED C0O-M0O3-GAMMA-AL2O3 - LOW-PRESSURE REACTIVITY STUDIES [J].
KILANOWSKI, DR ;
TEEUWEN, H ;
DEBEER, VHJ ;
GATES, BC ;
SCHUIT, GCA ;
KWART, H .
JOURNAL OF CATALYSIS, 1978, 55 (02) :129-137