Ce改性Mn-Fe碳基催化剂低温脱硝性能及抗硫活性研究  

Low-temperature denitrification performance and anti-sulfur activity of Ce-modified Mn-Fe carbon-based catalyst

作　　者：李浩杰 辛力坚 刘岗 张志勇 刘显丽 李霞 郭江源 张海峰 宋涛[3] LI Hao-jie;XIN Li-jian;LIU Gang;ZHANG Zhi-yong;LIU Xian-li;LI Xia;GUO Jiang-yuan;ZHANG Hai-feng;SONG Tao(Inner Mongolia Power Technology Research Institute,Inner Mongolia Power(Group)Co.,Ltd.,Hohhot 010010,China;Jiangsu Orange Fruit Energy Environmental Protection Co.,Ltd.,Nanjing 210012,China;Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司,内蒙古呼和浩特010010 [2]江苏橙果能源环保有限公司,江苏南京210012 [3]南京师范大学,江苏南京210023

出　　处：《现代化工》2024年第11期159-164,169,共7页Modern Chemical Industry

基　　金：内蒙古电力集团(有限)责任公司内蒙古电力科学研究院分公司资助项目(电科院[2023]81号)。

摘　　要：以硝酸氧化处理后的椰壳活性炭为原料,负载硝酸锰、硝酸铁和硝酸铈等活性物质,经中低温煅烧制备Ce改性Mn-Fe碳基低温抗硫脱硝催化剂。利用固定床脱硝评价实验装置并结合BET、SEM-Mapping、XPS等表征方法研究其低温脱硝性能及抗硫活性。结果表明,Ce改性Mn-Fe碳基催化剂具有高比表面积,且表面Mn均匀分布,较高的Mn^(4+)、Ce^(3+)和表面吸附氧(O_(α))含量增强了碳基催化剂脱硝及抗硫性能。在130~220℃的脱硝效率高达99%以上;低SO_(2)浓度对催化剂脱硝性能基本无抑制作用,持续反应8 h脱硝效率仍高达88.78%。Coconut shell activated carbon treated by nitric acid oxidation is used as raw material to load with manganese nitrate,ferric nitrate,cerium nitrate and other active substances,then calcined at low-medium-temperature to obtain Ce-modified Mn-Fe carbon-based low-temperature anti-sulfur denitrification catalyst.Its low-temperature denitrification performance and anti-sulfur activity are studied by using a fixed-bed denitrification evaluation experimental device and combining with the characterization methods,such as BET,SEM-Mapping,XPS.Results show that the prepared Ce-modified Mn-Fe carbon-based catalyst has a high specific surface area and a uniform distribution of Mn on its surface.The higher Mn^(4+),Ce^(3+)and surface adsorbed oxygen(O_(α))contents enhance its denitrification and anti-sulfur performances.The denitrification efficiency of the catalyst exceeds 99%at 130-220℃.The denitrification performance of the catalyst cannot be inhibited at low SO2 concentration,and the denitrification efficiency remains still 88.78%for 8 h of continuous reaction.

关 键 词：低温脱硝 碳基催化剂 SO_(2)中毒 CE 

分 类 号：TQ032.4[化学工程]