分别采用尿素、氨水和碳酸钠作沉淀剂制备了三种具有不同氧化还原性能的氧化铈载体,并考察了这三种氧化铈载体负载氧化钒催化剂催化氧化消除氯苯的性能. 三种氧化钒催化剂在300 ℃下对氯苯氧化的转换频率依次为4.9, 1.6和0.8 h-1. 该结果表明氧化铈载体的氧化还原性质影响着负载氧化钒催化剂催化氧化消除氯苯的活性, V-O-Ce 键中的氧物种在该催化氧化反应中起着重要作用.
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