摘要
利用柠檬酸络合法合成了K2NiF4型稀土复合氧化物LnSrCoO4(Ln=Pr、Nd、Eu)并考察了它们对CO和C3H8氧化反应的催化活性,以XRD、O2-TPD、CO2-TPD对催化剂进行表征。结果表明,Pr、Nd和Eu能形成K2NiF4型稀土复合氧化物,O2和CO2的脱附量与催化剂结构中的Co2+和Co3+含量及性质有关,晶格氧参与了CO和C3H8氧化反应。
The rare-earth complex oxides LnSrCoO_4(Ln=Pr, Nd, Eu) with K_2NiF_4 structure have been synthesized by citric-complexing decomposition method and the catalytic activity for CO oxidation and C_3H_8 oxidation over these oxides were also tested. XRD, O_2-TPD and CO_2-TPD were used to characterize the structure and oxidative property of the oxides. It was shown that Pr, Nd and Eu can synthesize the complex oxides with K_2NiF_4 structure.O_2 desorption and CO_2 desorption are related to Co^(2+) and Co^(3+) ions in the crystal structure of oxides. The crystal oxygen take part in the reactions of CO oxidation and C_3H_8 oxidation.-
出处
《南昌大学学报（理科版）》
CAS
北大核心
2004年第1期99-102,共4页
Journal of Nanchang University(Natural Science)
