H2O2改性活性炭高效催化转化NO2制NO
Highly efficient catalytic conversion of NO2 to NO by H2O2 modified activated carbon
穆仕芳 1王洪亮 2王艳 2辜俊超 3翁育靖 4孙琦 4张玉龙4
作者信息
- 1. 河南理工大学 安全科学与工程学院,河南 焦作 454003;河南省煤炭绿色转化重点实验室,河南 焦作 454003
- 2. 河南理工大学 安全科学与工程学院,河南 焦作 454003
- 3. 河南省煤炭绿色转化重点实验室,河南 焦作 454003
- 4. 河南省煤炭绿色转化重点实验室,河南 焦作 454003;河南理工大学化工学院,河南 焦作 454003
- 折叠
摘要
为了探究含氧官能团对活性炭转化NO2 制NO能力的影响,采用过氧化氢(H2O2)对活性炭进行改性.对改性前后的催化剂进行N2 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NO2 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NO2在活性炭表面的吸附和催化转化,经质量分数为20%的H2O2处理后的活性炭的反应性能最佳,在150℃下NO2 转化率 99.8%.
Abstract
H2O2 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 NO2 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 NO2 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 NO2 on activated carbon surface.The reaction performance of AC-2 was the best and its NO2 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Key words
activated carbon modification/nitrogen dioxide conversion/oxygen containing functional groups/pore structure引用本文复制引用
基金项目
河南省煤炭绿色转化杰出外籍科学家工作室项目(GZS2020012)
出版年
2024
国家科技期刊平台
NSTL
万方数据