Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (2): 20230447.doi: 10.7503/cjcu20230447

• Physical Chemistry • Previous Articles     Next Articles

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)

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

CLC Number: 

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