载体预处理对Pt－Pd／γ－Al_2O_3催化剂氧化性能的影响

Effect or Support Pre-treatment on the Oxidation Activities or Pt-Pd/γ-Al_2O_3 Catalysts

本文用等体积浸渍法制备了一系列Ｐｔ－Ｐｄ／γ－Ａｌ２Ｏ３催化剂，并考察载体预焙烧和ＭｇＯ改性对其催化氧化性能的影响．结果表明：γ－Ａｌ２Ｏ３载体经高温预焙烧和ＭｇＯ改性后．其表面碱性增强，并影响催化剂活性中心在表面的分布，从而使催化剂对正丁醇、苯和正已烷三种有机物的深度氧化活性有不同程度的提高．其中以正己烷最为显著。

Effect of pre-calcination and MgO modification of γ-Al2O3 support on the oxidation activities of Pt-Pd catalysts was investigated.The results indicated that the pre-calcination and/or MgO modification of γ-Al2O3 supKport could obviously increase activities a small extent for the oxidation of n-butanol.