电工技术学报2017，Vol.32Issue(8)：108-113,6.
高压脉冲放电协同复合型催化剂去除甲醛的实验
Degradation of Formaldehyde by High Voltage Pulse Discharge Combined with Compound Catalyst
摘要
Abstract
Combined with composite catalyst,high voltage pulse discharge was adopted to degraded formaldehyde.The Ti-Mn catalysts were synthesized by sol-gel method and impregnationsol-gel methods step by step,and XRD,SEM,FT-IR were used to describe the properties of the prepared catalysts.In addition,the influences of the added amount of Ti and the loading sequence of Ti,Mn in catalysts on the degradationrate of the formaldehyde were investigated.Meanwhile,the effects of the pulse discharge on the catalyst's structure and morphology were also analyzed due to the characterization.The results showed that the optimal conditions for the formaldehyde degradation by prepared catalysts were 24kV of the pulse discharge voltage,40Hz of the pulse discharge frequency,and 1 ∶4 of Ti to Mn for TiO2-MnOx/γ-Al2O3.The removal rate of formaldehyde reached 97.5％ under the best condition.The pulse discharge could change the structure and morphology of catalysts.The roughness of the surface of TiO2-MnOx/γ-Al2O3 decreased,while small micropore increased after the pulse discharge.Besides,the discharge plasma improved catalytic activity and active adsorption sites of the catalysts,resulting in higher removal rate of formaldehyde.关键词
脉冲放电/复合型催化剂/去除/甲醛Key words
Pulse discharge/complex catalyst/removal/formaldehyde分类
数理科学引用本文复制引用
董冰岩,甘青青,孙宇,何俊文,谢文涓..高压脉冲放电协同复合型催化剂去除甲醛的实验[J].电工技术学报,2017,32(8):108-113,6.基金项目
国家自然科学基金(51167007)和江西省教育厅项目(GJJl1455)资助. （51167007）
