H_(2)O_(2)改性活性炭高效催化转化NO_(2)制NO  

Highly efficient catalytic conversion of NO_(2) to NO by H_(2)O_(2) modified activated carbon

作　　者：穆仕芳 王洪亮 王艳[1] 辜俊超 翁育靖 孙琦 张玉龙 MU Shifang;WANG Hongliang;WANG Yan;GU Junchao;WENG Yujing;SUN Qi;ZHANG Yulong(College of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China;Henan Key Laboratory of Coal Green Conversion,Jiaozuo 454003,China;College of Chemistry and Chemical Engineering,Henan Polytechnic University,Jiaozuo 454003,China)

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454003 [2]河南省煤炭绿色转化重点实验室,河南焦作454003 [3]河南理工大学化工学院,河南焦作454003

出　　处：《高校化学工程学报》2024年第3期493-499,共7页Journal of Chemical Engineering of Chinese Universities

基　　金：河南省煤炭绿色转化杰出外籍科学家工作室(GZS2020012)。

摘　　要：为了探究含氧官能团对活性炭转化NO_(2)制NO能力的影响,采用过氧化氢(H_2O_(2))对活性炭进行改性。对改性前后的催化剂进行N_2物理吸附-脱附、Boehm滴定、X射线光电子能谱、拉曼光谱等表征并对其转化NO_(2)能力进行评价,结果表明:过氧化氢表面改性增加了活性炭微孔面积和表面含氧官能团的含量,尤其是增加了表面酚羟基的含量,进而促进了NO_(2)在活性炭表面的吸附和催化转化,经质量分数为20%的H_2O_(2)处理后的活性炭的反应性能最佳,在150℃下NO_(2)转化率99.8%。H2O_(2) was used to modify activated carbon in order to investigate the effect of oxygen-containing functional groups on the ability of activated carbon to convert NO_(2) to NO.The catalysts before and after modification were characterized by N2 physical adsorption desorption,Boehm titration,X-ray photoelectron spectroscopy,Raman spectroscopy,and their ability to convert NO_(2) was evaluated.The result shows that hydrogen peroxide surface modification increases microporous areas of activated carbon and contents of surface oxygen-containing functional groups especially surface phenolic hydroxyl groups,thereby promoting the adsorption and catalytic conversion of NO_(2) on activated carbon surface.The reaction performance of AC-2 was the best and its NO_(2) conversion rate was 99.8%at 150℃.

关 键 词：活性炭改性 二氧化氮转化 含氧官能团 孔结构 

分 类 号：X830[环境科学与工程—环境工程]