掺钾的锰－铈氧化物催化剂结构和甲苯完全氧化反应性能

The Structure and the Performance of Toluene Full Oxidation of Manganece-Cerium Oxide Catalyst with Potassium

本文研究了负载的铈－锰氧化物上掺钾对甲苯完全氧化反应性能的影响．结果表明当铈锰原子比为２：１以及钾锰原子比为０．４：１时．催化剂活性最好．稳定性实验表明．在２５０ｈ的时间内活性基本稳定不变．ＸＲＤ和ＸＰＳ表征结果显示铈的加入促进了锰的高分散，加入的钾也显示高分散．表面上铈锰的比例与体相基本一致．铈和锰氧化物的Ｏｌｓ峰具有相同的结合能。

The activity for the full oxidation of toluene on a supported Mn2O3-CeO2 catalyst and effect of potassium doping on the catalyst have been studied. It show that the sample with Ce/Mn (atomic ratio)= 2 : 1 and K/Mn(atomic ratio) =0. 4: 1 Possesses higher activity than others. In a durability test of 250h, activity has no remarkable change.