燃料化学学报（中英文）2025，Vol.53Issue(10)：1470-1481,12.DOI:10.1016/S1872-5813(25)60548-2
火焰喷雾热解法合成CeO2-Co3O4催化剂及其乙烷催化氧化性能研究
Study on the synthesis of CeO2-Co3O4 catalyst by flame spray pyrolysis method and its catalytic oxidation performance for ethane
摘要
Abstract
The Ce5Co95 catalyst was successfully prepared using the method of flame spray pyrolysis(FSP)with 2-ethylhexanoic acid(2-ethylhexanoic acid,2-EHA)as an organic ligand.The effects on the catalytic oxidation performance of ethane caused by adding 2-EHA to the precursor solvent was systematically studied.Ce5Co95-10％2-EHA catalyst exhibits excellent catalytic performance,with a t90(temperature at which ethane conversion reaches 90％)of 293℃ under a weight hourly space velocity of 60000 mL/(g·h).The catalyst's physicochemical properties were characterized using XRD,BET,Raman,HRTEM,XPS,H2-TPR,O2-TPD and EPR techniques,and effectively correlated with its catalytic performance.The introduction of 2-EHA significantly reduces the catalyst's grain size,increases the specific surface area,and provides more active sites for the reaction.Additionally,it enhanced the Ce-Co interaction,generating abundant oxygen vacancies at the CeO2-Co3O4 interface,which weaked the metal-oxygen bonds,promoted the mobility of lattice oxygen,and improved the redox capability of the catalyst,thus optimizing the catalyst's oxidation performance.The Ce5Co95-10％2-EHA catalyst also demonstrated excellent stability and water resistance.In addition,the mechanism of ethane oxidation on the catalyst surface was investigated using in situ diffuse reflectance infrared Fourier transform spectroscopy(in situ DRIFTS).关键词
火焰喷雾热解法/VOCs催化氧化/氧空位/Ce-Co相互作用/2-乙基己酸Key words
flame spray pyrolysis/catalytic oxidation of VOCs/oxygen vacancies/Ce-Co interaction/2-ethylhexanoic acid分类
化学化工引用本文复制引用
吕现燕,胡江亮,侯建材,王建成,鲍卫仁,常丽萍..火焰喷雾热解法合成CeO2-Co3O4催化剂及其乙烷催化氧化性能研究[J].燃料化学学报（中英文）,2025,53(10):1470-1481,12.基金项目
The project was supported by Natural Science Research Project of Shanxi Basic Research Program(202203021221064),Key Research and Development Project of Shanxi Province(202302090301013),Shanxi Province Basic Research Program for Young Scientists(202403021212331).山西省基础研究计划自然科学研究面上项目(202203021221064),山西省重点研发计划项目(202302090301013)和山西省基础研究计划青年科学研究项目(202403021212331)资助 （202203021221064）
