制备条件对Mn系催化剂比表面积的影响  

The Effects of Preparation Conditions on the Surface Area of Mn-based Catalyst

作　　者：焦叶凡[1] 王学涛[1] 张兴宇[1] 

机构地区：[1]河南科技大学车辆与动力工程学院,河南洛阳471003

出　　处：《锅炉技术》2013年第5期67-70,共4页Boiler Technology

基　　金：国家自然科学基金项目(50806020);河南省科技杰出青年计划项目(11400510010)

摘　　要：对负载型Mn系催化剂的制备工艺与催化剂比表面积的关系进行了研究.实验数据表明：MnOx的负载量、催化剂煅烧温度及助剂的加入,均是影响催化剂比表面积的因素.随着MnOx对于MnOx/TiO2的负载量（MnOx与MnOx/TiO2摩尔比从0.2～0.5）升高,催化剂比表面积及孔结构相应增大；而催化剂煅烧温度（450℃～600℃）越高,其比表面积及孔结构相应减小；Ce、Ni、Fe、Cu 4种助剂中Ce对MnOx/TiO2的比表面积和孔结构影响最小.This paper is ralate to the effect preparation process of the supported Mn-based catalysts on its surface area. The experimental data show that： the amount of load of the MnOx, the calcination temperature of catalyst and the additives are affect factors of the cata- lyst specific surface area. With the amount of MnOx load （MnOx/TiO2 molar ratio increased from 0.2 -0.5）increased, the catalyst surface area corresponding increase; while with the higher calcination temperature （450℃ ~600℃） of the catalyst, and its surface area and pore structure corresponding decreases; Among four kinds of additives （Ce,Ni,Fe,Cu） ,Ce has the least impact on specific surface area and pore structure of MnOx/TiO2.

关 键 词：Mn系 制备条件 比表面积 孔结构 

分 类 号：O647.32[理学—物理化学]