CoZr/H-ZSM-5 hybrid catalysts for synthesis of gasoline-range isoparaffins from syngas

被引:58
作者
Huang, Xing [1 ,2 ]
Hou, Bo [1 ]
Wang, Jungang [1 ,2 ]
Li, Debao [1 ]
Jia, Litao [1 ]
Chen, Jiangang [1 ]
Sun, Yuhan [1 ,3 ]
机构
[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Shanghai Adv Res Inst, Low Carbon Convers Ctr, Shanghai 201203, Peoples R China
基金
中国国家自然科学基金;
关键词
ZSM-5; Cobalt; Hybrid catalyst; Isoparaffin; Fischer-Tropsch synthesis; FISCHER-TROPSCH SYNTHESIS; MIDDLE ISOPARAFFINS; CAPSULE CATALYST; CO-ZRO2; CATALYSTS; COBALT CATALYSTS; PORE-SIZE; ZIRCONIA; PERFORMANCE; DEACTIVATION; HYDROCARBONS;
D O I
10.1016/j.apcata.2011.09.004
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Different CoZr/H-ZSM-5 hybrid catalysts were prepared by a hydrothermal synthesis method, where H-ZSM-5 was enwrapped onto the Co-ZrO2 Fischer-Tropsch synthesis (FTS) catalyst. The catalysts were characterized by BET, XRD, Al-27 NMR, SEM, TEM, XPS, H-2-TPR, NH3-TPD and IR techniques. The catalytic performance for the direct conversion of syngas to high-octane gasoline-range (C5-11) hydrocarbons was studied. Coke formation on the spent catalysts was measured by TGA. Compared with the base Co-ZrO2 catalyst or the physically mixed catalyst of Co-ZrO2 with H-ZSM-5, the reducibility of the hybrid catalyst was much lower due to the strong interactions of cobalt phase with zeolite and/or zirconia. The catalytic performance results showed that the as-prepared hybrid catalysts had high selectivity towards gasoline-range isoparaffins and relatively low methane selectivity in spite of the relatively low catalytic activity. The hybrid catalysts could effectively minimize the accumulation of carbonaceous deposits. The catalyst with aluminum isopropoxide as Al source exhibited excellent selectivity on the isoparaffin synthesis and relatively good stability. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:38 / 46
页数:9
相关论文
共 52 条
[1]   ZR PROMOTION OF CO/SIO2 FOR FISCHER-TROPSCH SYNTHESIS [J].
ALL, S ;
CHEN, B ;
GOODWIN, JG .
JOURNAL OF CATALYSIS, 1995, 157 (01) :35-41
[2]   TEMPERATURE-PROGRAMMED REDUCTION OF COO/AL2O3 CATALYSTS [J].
ARNOLDY, P ;
MOULIJN, JA .
JOURNAL OF CATALYSIS, 1985, 93 (01) :38-54
[3]   A core/shell catalyst produces a spatially confined effect and shape selectivity in a consecutive reaction [J].
Bao, Jun ;
He, Jingjiang ;
Zhang, Yi ;
Yoneyama, Yoshiharu ;
Tsubaki, Noritatsu .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (02) :353-356
[4]   H-type zeolite coated iron-based multiple-functional catalyst for direct synthesis of middle isoparaffins from syngas [J].
Bao, Jun ;
Yang, Guohui ;
Okada, Chie ;
Yoneyama, Yoshiharu ;
Tsubaki, Noritatsu .
APPLIED CATALYSIS A-GENERAL, 2011, 394 (1-2) :195-200
[5]  
Chen JG, 2004, STUD SURF SCI CATAL, V147, P277
[6]   EFFECT OF PREPARATION METHODS ON THE CATALYTIC PROPERTIES OF ZEOLITE-SUPPORTED RUTHENIUM IN THE FISCHER-TROPSCH SYNTHESIS [J].
CHEN, YW ;
WANG, HT ;
GOODWIN, JG .
JOURNAL OF CATALYSIS, 1983, 83 (02) :415-427
[7]   Synthesis and apparent bandgap of nanophase zirconia [J].
Ciuparu, D ;
Ensuque, A ;
Shafeev, G ;
Bozon-Verduraz, F .
JOURNAL OF MATERIALS SCIENCE LETTERS, 2000, 19 (11) :931-933
[8]   SYNTHESIS OF MOTOR FUELS FROM HY-ZEOLITE SUPPORTED FISCHER-TROPSCH IRON CATALYSTS [J].
EGIEBOR, NO ;
COOPER, WC ;
WOJCIECHOWSKI, BW .
APPLIED CATALYSIS, 1989, 55 (01) :47-64
[9]   THE SHELL MIDDLE DISTILLATE SYNTHESIS PROCESS (SMDS) [J].
EILERS, J ;
POSTHUMA, SA ;
SIE, ST .
CATALYSIS LETTERS, 1991, 7 (1-4) :253-269
[10]   Differences in the characteristics and catalytic properties of cobalt-based Fischer-Tropsch catalysts supported on zirconia and alumina [J].
Enache, DI ;
Roy-Auberger, M ;
Revel, R .
APPLIED CATALYSIS A-GENERAL, 2004, 268 (1-2) :51-60