石油化工2024，Vol.53Issue(4)：505-510,6.DOI:10.3969/j.issn.1000-8144.2024.04.004
铈锰复合氧化物高效催化分解臭氧
Efficiently catalytic decomposition of ozone by cerium-manganese composite oxide
摘要
Abstract
The cerium-manganese oxide catalyst was prepared by dopping cerium into the manganese oxide octahedral molecular sieve(OMS-2).The physical and chemical properties of the catalyst were characterized by XRD,SEM,H2-TPR,and XPS.The removal effect of the catalyst on high concentration ozone under high humidity was simulated.The experimental results demonstrate that the addition of Ce to OMS-2 induces a transformation in the crystal lattice structure of OMS-2.The CeMn4 with a Mn/Ce atomic ratio of 4 exhibits the highest specific surface area,the smallest particle size,and the highest concentration of oxygen vacancies,which contribute to its exceptional redox properties.Under the conditions of humidity 90%,volume space velocity 700 000 h-1,and reaction time 420 min,a stable ozone decomposition rate exceeding 95%can be achieved,while also demonstrating strong water resistance.The cerium-manganese composite oxide is poised to become an ideal material for catalytic decomposition of ozone in industry.关键词
臭氧分解/铈锰复合氧化物/高湿度/MnO2八面体分子筛Key words
ozone decomposition/cerium-manganese composite oxide/high humidity/MnO2 octahedral molecular sieve分类
化学化工引用本文复制引用
刘思嘉,胡正,彭博..铈锰复合氧化物高效催化分解臭氧[J].石油化工,2024,53(4):505-510,6.基金项目
广西科技基地和人才专项资助(桂科AD21220068) （桂科AD21220068）
中央引导地方科技发展资金专项(区域创新体系建设类:桂科ZY23055006). （区域创新体系建设类:桂科ZY23055006）
