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Preparation of La_(0.9)K_ (0.1)CoO_3 Perovskite Composite Oxide
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作者 王伟 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2005年第4期32-34,共3页
Two methods for preparing La0.9K0.1CoO3 perovskite composite oxides.traditional solid state reaction method and sol-gel method.were compared.The characteristics of the powders,such as purity.particle diameter,BET surf... Two methods for preparing La0.9K0.1CoO3 perovskite composite oxides.traditional solid state reaction method and sol-gel method.were compared.The characteristics of the powders,such as purity.particle diameter,BET surface area,pore diameter,were inrestigated by using TG-DTA,XRD,SEM and BET methods.The experimental results shou that La0.9K0.1CoO3 perorskite composite oxide can be obtained by using the two methods.The purity of La0.9K0.1CoO3 powders can be increased by raising the calcining temperature while the particle diameter increased and BET surface area decreased.At the same calcining temperature,the properties of the La0.9K0.1CoO3 powders synthesized by the sol-gel method are superior to those synthesized by the solid state reaction method.such as purer phase,smaller particle diameter,which can be used as a satisfactory catalyst in diesel waste gas cleaning. 展开更多
关键词 La0.9K0.1CoO3 perovskite composite oxides sol-gel method diesel waste gas cleaning
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Removal of NO_x and Diesel Soot Particulates Catalyzed byPerovskite-type Oxide La_(0.9)K_(0.1)CoO_3
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作者 王伟 ZHAN Reggie 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2006年第1期57-59,共3页
The catalytic performance of perovskite composite oxide catalyst La0.9 K0.1 CoO3 coated on catalyst supports by traditional solid state reaction method and sol-gel method were investigated by a series of experiments.... The catalytic performance of perovskite composite oxide catalyst La0.9 K0.1 CoO3 coated on catalyst supports by traditional solid state reaction method and sol-gel method were investigated by a series of experiments. The restdt shows that the catalytic performance of the La0.9 K0.1 CoO3 perovskite composite oxide catalyst synthesized by sol-gel method is superior to that synthesized by solid state reaction method, having lower ignition temperature of the diesel soot particulates, lower start temperature of NOx treatment, and lower concentration of byproduct CO. 展开更多
关键词 perovskite composite oxides La0.9 K0.1 CoO3 sol-gel method diesel waste gas cleaning
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