Role of tetrachloromethane as a gas-phase additive in the oxidative dehydrogenation of propane over cerium oxide

被引:24
作者
Sugiyama, S [1 ]
Iizuka, Y
Nitta, E
Hayashi, H
Moffat, JB
机构
[1] Univ Tokushima, Fac Engn, Dept Chem Sci & Technol, Tokushima 7708506, Japan
[2] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada
[3] Univ Waterloo, Guelph Waterloo Ctr Grad Work Chem & Biochem, Waterloo, ON N2L 3G1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
cerium oxide; oxidative dehydrogenation; propane; tetrachloromethane;
D O I
10.1006/jcat.1999.2700
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
In the absence of tetrachloromethane (TCM) carbon dioxide is the principal product formed in the oxidation of propane on ceria. The introduction of small partial pressures of TCM increases the conversion of propane with selectivities to propene up to 80%. Except under special circumstances no evidence of chlorinated species from TCM is found in the bulk structure while the surface region is shown to contain chlorine, although its form is not known. The enhancement of conversion and selectivity to propene is shown to be dependent upon the presence of chlorine, in whatever form, in the surface region of the catalyst. (C) 2000 Academic Press.
引用
收藏
页码:233 / 237
页数:5
相关论文
共 29 条
[1]   THE ENHANCEMENT OF THE OXIDATIVE COUPLING OF METHANE ON OXIDE/SIO2 CATALYSTS BY TETRACHLOROMETHANE [J].
AHMED, S ;
MOFFAT, JB .
CATALYSIS LETTERS, 1989, 2 (05) :309-317
[2]   THE CONVERSION OF METHANE ON HETEROPOLY OXOMETALATES IN THE PRESENCE OF TETRACHLOROMETHANE [J].
Ahmed, Shamsuddin ;
Moffat, John B. .
CATALYSIS LETTERS, 1988, 1 (05) :141-146
[3]  
Bernal S, 1995, STUD SURF SCI CATAL, V96, P419
[4]  
BERNAL S, 1993, I PHYS C SER, V138, P485
[5]   COMPARATIVE-STUDY OF CATALYSTS FOR THE OXIDATIVE COUPLING OF METHANE [J].
BURCH, R ;
SQUIRE, GD ;
TSANG, SC .
APPLIED CATALYSIS, 1988, 43 (01) :105-116
[6]   Catalytic selective oxidation of propane [J].
Buyevskaya, OV ;
Baerns, M .
CATALYSIS TODAY, 1998, 42 (03) :315-323
[7]  
Cavani F, 1997, STUD SURF SCI CATAL, V110, P19
[8]   THE INHIBITION OF HYDROCARBON OXIDATION OVER SUPPORTED PRECIOUS METAL-CATALYSTS [J].
CULLIS, CF ;
WILLATT, BM .
JOURNAL OF CATALYSIS, 1984, 86 (01) :187-200
[9]   STUDIES OF PARTIAL OXIDATION OF METHANE OVER HETEROGENEOUS CATALYSTS [J].
CULLIS, CF ;
KEENE, DE ;
TRIMM, DL .
JOURNAL OF CATALYSIS, 1970, 19 (03) :378-&
[10]   Ceria lattice oxygen ion substitution by Cl- during the reduction of Rh(Cl)/CeO2 catalysts.: Formation and stability of CeOCl [J].
Fajardie, F ;
Tempere, JF ;
Manoli, JM ;
Djega-Mariadassou, G ;
Blanchard, G .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1998, 94 (24) :3727-3735