氨氧化制硝酸的稀土钙钛矿型催化剂的活性及其抗硫性能  

CATALYTIC ACTIVITY AND SULFUR RESISTANCE OF RARE EARTH PEROVSKITE-TYPE CATALYSTS IN AMMONIA OXIDATION TO NITRIC ACID

作　　者：崔豪星 范致荣 杨桐兰 张柏东[1] 索延辉[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《Chinese Journal of Catalysis》1991年第6期488-493,共6页催化学报（英文）

摘　　要：在工业生产中NH_3氧化制HNO_3目前仍采用铂网催化剂。我们曾对稀土、过渡金属复合氧化物A_(1-x)A′_xBO_3型催化剂进行了一系列研究,其A,A′是碱土和稀土金属,B是Co,Fe,Mn,Ni等过渡金属元素。这类催化剂不仅活性高,HNO_3的单收率可达98％以上,而且具有良好的稳定性,但其寿命不如铂金.The influence of the physico-chemical properties caused by the partial substitution of transition metals, V , Cu , Fe , Ni and W , for the B site of La1-xCexCo1-yBr,O3+δ catalysts on the catalytic activity and sulfur resistant behavior was investigated by using X-ray diffraction analysis, IR spectroscopy and DTA-TG.It was found that the sulfur resistant performance of 6-Cr catalyst surpassed, that of the accepted Rc--112 catalyst. The poisonous mechanism by sulfur v/as discussed.

关 键 词：氨 氧化 硝酸 稀土钙钛矿 催化剂 

分 类 号：TQ111.2[化学工程—无机化工]