Performance of cobalt catalysts supported on CexZr1-xO2 (0 < x < 1) solid solutions in oxidative ethanol reforming

被引：7
作者：
Maia, Thaisa A. [1 ]
Assaf, Jose M. [2 ]
Assaf, Elisabete M. [1 ]
机构：
[1] Univ Sao Paulo, Inst Quim Sao Carlos, Sao Carlos, SP, Brazil
[2] Univ Fed Sao Carlos, Dept Engn Quim, BR-13560 Sao Carlos, SP, Brazil
来源：
REACTION KINETICS MECHANISMS AND CATALYSIS | 2013年 / 109卷 / 01期
关键词：
Ethanol oxidative reforming; Hydrogen; Ceria; Zirconia; Cobalt; CEO2-ZRO2 MIXED OXIDES; STEAM; COMBUSTION; STABILITY; SURFACE; ZRO2; CEO2; NI;
D O I：
10.1007/s11144-013-0548-3
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：
Catalysts containing 10 %Co supported on CexZr1-xO2 (0 < x < 1) were used to catalyze oxidative ethanol reforming reactions. The catalysts were characterized by temperature-programmed reduction, X-ray diffraction and N-2 physisorption. Catalytic tests were conducted at 773 K and molar feed ratios of H2O/Ethanol/O-2 = 3/1/0.16 and 3/1/0.20. The mixed oxide provides enhanced resistance to carbon formation because the insertion of Zr4+ causes a distortion in the CeO2 lattice, leading to a higher fraction of cerium species on the surface and favoring the oxidation and gasification reactions of carbon and CO. The addition of oxygen improved the oxidative properties of the reactive systems, with a high formation of CO2.
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收藏
页码：181 / 197
页数：17
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