高等学校化学学报 ›› 2024, Vol. 45 ›› Issue (2): 20230447.doi: 10.7503/cjcu20230447

• 物理化学 • 上一篇    下一篇

MnOδ 催化剂的制备及对柴油机尾气炭烟颗粒燃烧的催化性能

周生冉1, 彭超1, 高思宇1, 于迪2, 张春雷2, 王斓懿1, 范晓强1, 于学华1(), 赵震1,2()   

  1. 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
  • 收稿日期:2023-10-21 出版日期:2024-02-10 发布日期:2023-12-15
  • 通讯作者: 于学华,赵震 E-mail:yuxuehua1986@163.com;zhenzhao@cup.edu.cn
  • 基金资助:
    国家自然科学基金(22072095);国家重点研发计划项目(2022YFB3506200);辽宁省优秀青年基金(2022-YQ-020);辽宁省兴辽英才青年拔尖人才计划项目(XLYC2203007);沈阳市科技计划项目(22-322-3-28)

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

ZHOU Shengran1, PENG Chao1, GAO Siyu1, YU Di2, ZHANG Chunlei2, WANG Lanyi1, FAN Xiaoqiang1, YU Xuehua1(), ZHAO Zhen1,2()   

  1. 1.Institute of Catalysis for Energy and Environment,College of Chemistry and Chemical Engineering,Shenyang Normal University,Shenyang 110034,China
    2.State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China
  • Received:2023-10-21 Online:2024-02-10 Published:2023-12-15
  • Contact: YU Xuehua, ZHAO Zhen E-mail:yuxuehua1986@163.com;zhenzhao@cup.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22072095);the National Key Research and Development Program of China(2022YFB3506200);the Excellent Youth Science Foundation of Liaoning Province, China(2022-YQ-20);the Liaoning Xingliao Talented Youth Top Talent Program, China(XLYC2203007);the Shenyang Science and Technology Planning Project, China(22-322-3-28)

摘要:

基于氧化锰(MnO x )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K2CO3同时存在时, 所制备的MnO δ -t12催化剂具有最佳的催化燃烧炭烟颗粒的活性, T10, T50T90值分别为274, 321和354 ℃.

关键词: 氧化锰, 催化剂, 水热法, 炭烟颗粒

Abstract:

Based on the excellent redox performance of manganese oxide(MnO x ) 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, N2 adsorption-desorption, H2-TPR, O2-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 -t12 catalyst exhibits the best catalytic activity when the hydrothermal reaction time was 12 h, the calcination temperature was 550 ℃, and the presence of KOH and K2CO3 in the raw materials. The corresponding temperature values of T10T50 and T90 for soot combustion are 274, 321 and 354 ℃, respectively.

Key words: Manganese oxide, Catalyst, Hydrothermal method, Soot particles

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