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三维大孔La1-xCexCoO3的制备及其催化燃烧甲苯性能

作者:时间:2025-11-01点击数:


全文下载: 202505007.pdf


文章编号: 1672-6987(2025)05-0049-08 DOI: 10.16351/j.1672-6987.2025.05.007

吴丹, 吕德兴, 孔晓伟*(青岛科技大学 环境与安全工程学院, 山东 青岛 266042)

摘要: 采用无皂乳液聚合法制备了聚甲基丙烯酸甲酯(PMMA)聚合物微球,以此为硬模板制备了三维有序大孔(3DOM)La1-xCexCoO3x=0,0.1,0.3,0.5)钙钛矿催化剂并用于甲苯催化燃烧测评。同时采用XRD、SEM、XPS、FT-IR和H2-TPR等技术对催化剂的形貌、结构、元素价态、键合方式和还原性能进行了分析表征。结果表明:实验成功制备出有序的三维大孔结构La1-xCexCoO3钙钛矿催化剂,且适量的Ce掺杂可以有效地提高其对甲苯的催化活性。在所有催化剂中,3DOM La0.7Ce0.3CoO3钙钛矿具有最高的甲苯催化活性,T10%T50%T90%分别为124、218和280 ℃。


关键词: 钙钛矿; 三维大孔结构; 掺杂; 催化燃烧; 甲苯


中图分类号: X 511        文献标志码: A


引用格式: 吴丹, 吕德兴, 孔晓伟. 三维大孔La1-xCexCoO3的制备及其催化燃烧甲苯性能[J]. 青岛科技大学学报(自然科学版), 2025, 46(5): 49-56.


WU Dan, LYU Dexing, KONG Xiaowei. Preparation of three-dimensional macroporous La1-xCexCoO3 and their catalytic performance for toluene combustion[J]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2025, 46(5): 49-56.

Preparation of Three-Dimensional Macroporous La1-xCexCoO3 and Their Catalytic Performance for Toluene Combustion

WU Dan, LYU Dexing, KONG Xiaowei(College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)

Abstract: Polymethyl methacrylate (PMMA) polymer microspheres were prepared by soap-free emulsion polymerization. Three dimensional ordered macropore (3DOM) La1-xCexCoO3 x=0,0.1,0.3,0.5) perovskite catalysts were prepared using PMMA as hard template for the evaluation of toluene catalytic combustion. At the same time, XRD, SEM, XPS, FT-IR and H2-TPR techniques were used to analyze and characterize the morphology, structure, element valence state, bonding mode and reduction performance of the catalyst. The results show that the ordered three-dimensional macroporous La1-xCexCoO3 perovskite catalyst was successfully prepared in the experiment, and proper Ce doping can effectively improve its catalytic activity for toluene.Among all the catalysts, 3DOM La0.7Ce0.3CoO3 perovskite has the highest toluene catalytic activity, T10% T50% and T90% are 124, 218 and 280 ℃, respectively.


Key words: perovskite; three-dimensional macroporous structure; doping; catalytic combustion; toluene

收稿日期: 2024-11-03

基金项目: 山东省自然科学基金项目(ZR2019BEE047).

作者简介: 吴丹(1997—), 女, 硕士研究生.     * 通信联系人


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