MnO_(δ)催化剂的制备及对柴油机尾气炭烟颗粒燃烧的催化性能  

Preparation of MnOδCatalysts and Their Catalytic Performance for Combustion of Diesel Exhaust Soot Particles

作　　者：周生冉 彭超 高思宇 于迪 张春雷 王斓懿 范晓强 于学华 赵震 ZHOU Shengran;PENG Chao;GAO Siyu;YU Di;ZHANG Chunlei;WANG Lanyi;FAN Xiaoqiang;YU Xuehua;ZHAO Zhen(Institute of Catalysis for Energy and Environment,College of Chemistry and Chemical Engineering,Shenyang Normal University,Shenyang 110034,China;State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China)

机构地区：[1]沈阳师范大学化学化工学院能源与环境催化研究所,沈阳110034 [2]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《高等学校化学学报》2024年第2期63-77,共15页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:22072095,22372107,U1908204);国家重点研发计划项目(批准号:2022YFB3506200,2022YFB3504100);辽宁省优秀青年基金(批准号:2022-YQ-020);辽宁省兴辽英才青年拔尖人才计划项目(批准号:XLYC2203007);沈阳市科技计划项目(批准号:22-322-3-28)资助.

摘　　要：基于氧化锰(MnOx)催化剂优异的氧化还原性能,采用水热法制备了一系列具有层状结构的MnO_(δ)催化剂,并对其物化性能进行了表征.研究了水热反应温度、煅烧温度以及原料组成对催化剂晶体结构、形貌和氧化还原性能的影响,并将MnO_(δ)催化剂应用于柴油机尾气炭烟颗粒的催化燃烧.结果表明,当水热反应时间为12 h,煅烧温度为550℃,反应原料中KOH和K_(2)CO_(3)同时存在时,所制备的MnO_(δ)-t_(12)催化剂具有最佳的催化燃烧炭烟颗粒的活性,T_(10),T_(50)和T_(90)值分别为274,321和354℃.Based on the excellent redox performance of manganese oxide(MnOx)catalysts,a series of layered MnO_(δ)catalysts were prepared by hydrothermal method in this paper.The physicochemical properties of as-prepared catalysts were characterized by XRD,Raman,SEM,TEM,N_(2) adsorption-desorption,H_(2)-TPR,O_(2)-TPD and so on.The effects of hydrothermal reaction temperature,calcination temperature,and raw material composition on the crystal structure,morphology,and redox performance of the catalyst were studied.In addition,the as-prepared catalysts were applied in catalytic combustion of diesel exhaust soot particles.The results showed that the MnO_(δ)-t_(12) was 550℃,and the presence of KOH and K_(2)CO_(3) in the raw materials.The corresponding temperature values of T_(10),T_(50) and T_(90) for soot combustion are 274,321 and 354℃,respectively.

关 键 词：氧化锰 催化剂 水热法 炭烟颗粒 

分 类 号：O643.3[理学—物理化学]