Co-Mn二维纳米片催化剂低温NH_(3)-SCR脱硝研究  

Study on Co-Mn two-dimensional nanosheet catalyst for low temperature NH_(3)-SCR denitration

作　　者：郭晏乐 袁群富 李瑾 宰建陶[2] 辛志玲 GUO Yan-le;YUAN Qun-fu;LI Jin;ZAI Jian-tao;XIN Zhi-ling(Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power,Shanghai University of Electric Power,Shanghai 200090,China;College of Chemistry and Chemical Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上海电力大学上海市电力材料保护与先进材料重点实验室,上海200090 [2]上海交通大学化学化工学院,上海200240

出　　处：《应用化工》2022年第10期2859-2864,共6页Applied Chemical Industry

基　　金：国家自然科学基金资助(52001194);上海市科学技术委员会项目(19DZ2271100)。

摘　　要：利用水热法合成了Co-Mn-LDH催化剂,并对其进行煅烧改性制备出Co-Mn-LDO催化剂,应用于低温NH_(3)-SCR脱硝。结果表明,Co-Mn-LDH催化剂整体脱硝性能一般,最佳脱硝效率仅为45%,经过改性后Co-Mn-LDO催化剂的最佳脱硝性能显著提升,在250℃时脱硝效率达90%。表征结果表明,Co-Mn-LDO催化剂拥有更大的比表面积,更多的Co^(3+)、Mn^(4+)物种和表面吸附氧,因此具有更加优异的脱硝性能。The Co-Mn-LDH catalyst was synthesized by the hydrothermal method.Then the catalyst was calcined and modified to prepare the Co-Mn-LDO catalyst,which was applied to low-temperature NH_(3)-SCR denitration.The results show that the overall denitration performance of the Co-Mn-LDH catalyst is general,the optimal denitration efficiency is only 45%.However,the optimal denitration conversion of the modified Co-Mn-LDO catalyst is 90%at 250℃.The analysis shows that the Co-Mn-LDO catalyst has larger specific surface area,more Co^(3+),Mn^(4+)species and surface adsorbed oxygen,which result in more excellent denitrification performance.

关 键 词：Co-Mn催化剂 选择性催化还原 低温脱硝 层状双金属氢氧化物 

分 类 号：TQ032[化学工程] TQ426.8TQ534.9