LaSrBO_4型复合氧化物的合成及其CO氧化活性研究  

Studies on Prepartion and CO Oxidation Activity of LaSrBO4 Compound

作　　者：马智[1] 秦永宁[1] 齐晓周[1] 梁珍成[1] 何菲 

机构地区：[1]天津大学化工系,天津300072 [2]Cl化工国家重点实验室,天津300072

出　　处：《物理化学学报》1998年第5期453-457,共5页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金;C1化工国家重点实验室资助

摘　　要：LaSrBO4(B=Cu、Ni、 Co、 Fe、 Mn、 Cr ) was studied with respect to their preparation, characteristics and catalytic oxidation activity by means of XRD, XPS, electric conductivity and activity evaluation. Results showed that the calcination temperature has great influence on the formation of the phases of such samples, and was associated with the radius of B ion. The greater the B ion radius, the higher the calcination temperature required for the formation of the phases. It was also found that the activity and the relative content of adsorptive oxygen and lattice oxygen on the sample surf are, the artivation ellergy of electron conduction and the CO oxidation activity may vary with different B ions, and demonstrate a dual-peak pattern with the increase in the number of 3d electrons of the B ion.LaSrBO4(B=Cu、Ni、 Co、 Fe、 Mn、 Cr ) was studied with respect to their preparation, characteristics and catalytic oxidation activity by means of XRD, XPS, electric conductivity and activity evaluation. Results showed that the calcination temperature has great influence on the formation of the phases of such samples, and was associated with the radius of B ion. The greater the B ion radius, the higher the calcination temperature required for the formation of the phases. It was also found that the activity and the relative content of adsorptive oxygen and lattice oxygen on the sample surf are, the artivation ellergy of electron conduction and the CO oxidation activity may vary with different B ions, and demonstrate a dual-peak pattern with the increase in the number of 3d electrons of the B ion.

关 键 词：LaSrBO4 复合氧化物 催化剂 一氧化碳 氧化 

分 类 号：TQ426.83[化学工程] O643.36[理学—物理化学]