醋酸乙烯CT-2型催化剂使用寿命的预测  

Life Prediction of CT-2 Catalyst for Vinyl Acetate Synthesis

作　　者：吴嘉武[1] 毛锡昌 严爱珍 杨宝珍 张式[1] 

机构地区：[1]上海石油化工研究院,上海201208

出　　处：《工业催化》1993年第1期43-48,共6页Industrial Catalysis

摘　　要：本文对已在工业装置上分别应用一年和两年的醋酸乙烯 CT-2型催化剂,进行了分区分层取样,对所获样品进行了各种物化性能和机械性能的测定,并将测定结果与工业运转的实际情况进行关联。认为 CT-2型催化剂失活的主要原因是:(1)由于 Pd-Au 粒子的长大使其分散度下降;(2)树脂状物及结焦的存在,使催化剂的比表面和孔容降低。在此基础上预测已反应17665小时的 CT-2型催化剂的使用寿命尚可延长一年。Vinyl acetate is synthesized from ethylene,acetic acid and oxygen passing through CT-2 catalyst,which consists of palladium,gold, potassium acetate and silica.The catalyst has been used in a large commercial plant.Good performance was obtained with an average space-time-yield of 7.215 t VAC /m^3cat·d and average selectivity of 93.92%.The changes in its physico-chemical properties were discussed.

关 键 词：醋酸乙烯 催化剂 寿命 预测 

分 类 号：TQ221.211[化学工程—有机化工]