摘要
以堇青石蜂窝陶瓷为载体,以Ce(NO3)2、Ni(NO3)2和Mn(NO3)2为原料,采用柠檬酸浸渍法制备了负载型Ce-Ni-Mn-O复合氧化物催化剂,考察了Ce、Ni与Mn摩尔比、焙烧温度和焙烧时间对催化燃烧苯的性能影响,并采用比表面积分析仪(BET)、X射线衍射仪(XRD)、扫描电镜(SEM)对催化剂进行表征。实验结果表明,在系列催化剂中,n(Ce)/n(Ni)/n(Mn)=1∶0.5∶0.5,经500℃焙烧7h的催化剂表现出最佳的催化燃烧苯的活性,在300℃及体积空速为15000h-1条件下,即可促使浓度为4.8g/m3的苯催化转化率达到91.8%。
A series of Ce-Ni-Mn-O catalyst samples supported on cordierite honeycomb were prepared by the tit ric acid wet impregnation method with using Ce(NO3)2, Ni(NO3)2 and Mn(NO3)2. The effecots of the molar ratio on Ce. Ni and Mn, calcinations temperature and time for the complete oxidation of benzene were investiga led. The catalysts were characterized byspecific surface area (BET), scanning electron microscope (SEM) and X-ray diffraction techniques (XRD). The results showed that the Ce-Ni- Mn -O complex oxides catalysts with Ce. Ni and Mn molar ratio of 1 : 0. 5 : 0. 5, calcining at 500 C and 7 h exhibited high catalytic performance. With the concentration of benzene of 4. Sg/m^2 and the gaseous hourly space velcicityof 15000h k. theconw-frsion of toluene was 91.8% at the reaction temperature of 300
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第10期1457-1460,共4页
Journal of Functional Materials
基金
国家科技支撑计划资助项目(2012BAE01B03)
国家自然科学基金资助项目(51172107
21106072)
教育部高等学校博士学科点专项科研基金资助项目(20113221110004)
江苏省环保厅资助项目(2011023)
江苏省科技厅资助项目(BE2010196)
江苏省环境工程重点实验室科研开放课题资助项目(KF2012001)
2012年度江苏省研究生创新工程资助项目(CXLX12_0450)