后处理方式对2,2′-二氯氢化偶氮苯合成用铂炭催化剂的影响

对2,2′-二氯氢化偶氮苯合成用3%铂炭催化剂分别进行了热处理、微波处理和超声波处理。通过BET测试和SEM表征技术以及催化反应模拟对其性能进行检测与分析。结果表明，热处理导致金属粒子团聚，催化剂的比表面积减小，邻氯硝基苯催化加氢反应性能下降；微波和超声波处理促进了金属粒子的均匀分散，增大了催化剂的比表面积，提高了催化剂在邻氯硝基苯加氢反应中的催化性能。

Influence of post treatment methods on the properties of Pt/C catalysts for synthesis of 2,2＇-dichlorohydrazobenzene

3%Pt/C catalysts for synthesis of 2,2′-dichlorohydrazobenzene were treated by three ways of heat treatment,microwave treatment and ultrasonic treatment and were characterized by BET and SEM.The properties of as-prepared catalysts were investigated.The results showed that heat treatment resulted in the agglomeration of platinum particles,the decrease of specific surface area of Pt/C catalysts and the decline of the activity of the catalysts for catalytic hydrogenation of o-chloronitrobenzene;Microwave and ultrasonic treatments promoted the uniform dispersion of platinum particles,increased specific surface area of the catalysts,and improved the activity of Pt/C catalysts for hydrogenation of o-chloronitrobenzene.