TiO2-SiO2/ZrO2催化剂的制备及催化燃烧甲苯性能

化工进展

TiO2-SiO2/ZrO2催化剂的制备及催化燃烧甲苯性能

刘媛1，龙千明1，白云鹤2，吕斯濠2，范洪波2

1华南理工大学环境科学与工程学院，广东广州 510006；2东莞理工学院化学与环境工程学院，广东东莞 523808

出版日期:2010-11-05 发布日期:2010-11-05

Preparation of TiO2-SiO2/ZrO2 catalyst for catalytic combustion of toluene

LIU Yuan1，LONG Qianming1，BAI Yunhe 2，Lü Sihao2，FAN Hongbo2

1College of Environmental Science and Engineering，South China University of Technology，Guangzhou 510006，Guangdong，China；2College of Chemistry and Environmental Engineering，Dongguan University of Technology，Dongguan 523808，Guangdong，China

Online:2010-11-05 Published:2010-11-05

摘要/Abstract

摘要：

以ZrO₂为载体，制备出TiO₂-SiO₂/ZrO₂催化剂，用XRD和SEM对其进行表征；并将催化剂用于甲苯的催化燃烧，探讨了温度、气流速率、进气浓度等因素对甲苯催化效率和反应产物CO、CO₂选择性的影响。结果表明：催化剂中的TiO₂呈锐钛矿晶型，催化剂颗粒成功负载于ZrO₂表面；随着温度升高，甲苯催化效率增大，350 ℃时能达到最大值100%，CO₂选择性随之增大，但CO选择性却减少；气流速率增大导致甲苯催化效率增大，CO选择性稍稍增大，而CO₂选择性减小；进气浓度从25 mg/L增加到100 mg/L时，甲苯催化效率逐渐减小，CO₂选择性减小，CO选择性稍有增大。

Abstract:

TiO₂-SiO₂/ZrO₂ catalyst was prepared using ZrO₂ as carrier and characterized with XRD and SEM. The catalyst was used for catalytic combustion of toluene，and the effect of temperature，gas flow rate and inlet concentration of toluene was investigated. Results showed that the TiO₂ particles with anatase phase have been successfully fixed on the surface of ZrO₂. As the increase in temperature，both the catalytic rate of toluene and the productivity of CO₂ were increased，while the productivity of CO was decreased. 100% catalytic rate of toluene was achieved at 350℃. The increase in gas flow rate could lead to the increase in catalytic rate of toluene，the productivity of CO was a little increased while the productivity of CO₂was decreased. When the inlet concentration of toluene was increased from 25 mg/L to 100 mg/L，the catalytic rate of toluene was decreased gradually，the productivity of CO₂ was decreased and the productivity of CO was a little increased.

刘媛1，龙千明1，白云鹤2，吕斯濠2，范洪波2. TiO2-SiO2/ZrO2催化剂的制备及催化燃烧甲苯性能 [J]. 化工进展.

LIU Yuan1，LONG Qianming1，BAI Yunhe 2，Lü Sihao2，FAN Hongbo2. Preparation of TiO2-SiO2/ZrO2 catalyst for catalytic combustion of toluene[J]. Chemical Industry and Engineering Progree.