干燥方式对丙烯醛部分氧化制丙烯酸催化剂的影响  

Effects of drying methods on the catalysts for partial oxidation of acrolein to acrylic acid

作　　者：李晓云[1] 胡远明[2] 郭郢[2] 孙彦民[1] 曾贤君[1] 苗静[1] 于海斌[1] 李世鹏[1] 

机构地区：[1]中国海油天津化工研究设计院催化技术重点实验室,天津300131 [2]中国石油吉林石化公司,吉林吉林132022

出　　处：《工业催化》2011年第1期31-34,共4页Industrial Catalysis

摘　　要：钼钒钨复合金属氧化物是典型的丙烯醛部分氧化制丙烯酸催化剂,铜、锑是良好的助剂。干燥方式对催化剂性能有较大影响。评价结果表明,喷雾干燥得到无定型的催化剂粉末,较结晶干燥方式具有更好的催化活性和选择性,适应的温度范围较宽。采用XRD、SEM和EDX方法对催化剂进行了表征,表明喷雾干燥所得样品元素分布更均匀。Mo/V/W mixed oxide catalysts are used for the partial oxidation of acrolein to acrylic acid, and Cu and Sb are good cocatalysts. Drying methods have remarkable effects on catalytic properties of Mo/V/W mixed oxide catalysts. The evaluation experimental results showed that the spray-dried sample exhibited better catalytic activity and selectivity than the crystal drying one, and adapted to a wider temperature range. The results of XRD, SEM and EDX characterization indicated that the catalyst prepared by spray drying method possessed amorphous structure and the distribution of elements on the catalyst surface was more uniform.

关 键 词：催化剂工程 钼钒钨复合金属氧化物催化剂 丙烯醛 丙烯酸 喷雾干燥 结晶干燥 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]