硫化La_(1-x)Sr_xCoO_3的电性能和CO催化还原SO_2性能  

Electrical Conductivity and Catalytic Reduction of SO_2 by CO over Sulfurized La_(1-x)Sr_xCoO_3

作　　者：王倩[1] 马智[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《化学工业与工程》2008年第2期95-97,共3页Chemical Industry and Engineering

基　　金：国家自然基金重大研究计划资助项目(90210025)

摘　　要：对催化剂La1-xSrxCoO3（x=0．0～0．3）硫化后的结构、电性能和CO还原SO2的活性进行了研究。结果表明，硫化La1-xSrxCoO3为P型导体，在反应气氛下结构为La0.8Sr0.2CoO3催化剂对SO2的吸附量较大，其催化活性较高，而La0.7Sr0.3CoO3对SO2的吸附量较小，催化活性也相对较低，催化剂对SO2的吸附量与催化活性存在对应的关系。The structure, electrical conductivity and catalytic reduction of SO2 by CO over sulfurized La1-xSrxCoO3 （x = 0.0 - 0.3 ）were investigated. The results showed that the sulfurized samples of La1-xSrxCoO3 are P-type semiconductor and the effect of catalysts on SO2 is stronger than that on CO. In reaction mixture, the bigger the adsorptive capacity of SO2, the higher its catalytic activity over La0.8 Sr0.2 CoO3 ; the weaker the adsorptive capacity of SO2, the lower its catalytic activity over La0.7 Sr0.3 CoO3. It can be concluded that there is a certain relationship between the adsorptive capacity of SO2 and catalytic activity of the catalyst.

关 键 词：钙钛矿 电导性能 硫化 催化还原 

分 类 号：TQ426.8[化学工程]