ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Catalytic removal of soot particles over MnCo₂O₄ catalysts prepared by the auto-combustion method

Huanrong Liu, Mengqi Zhuang, Zhanquan Zhang, Xiaodong Dai, Ling Qian, and Zifeng Yan

Sheng Li College China University of Petroleum, Dongying, China

E-mail: liuhuanrong851010@163.com

Abstract: Soot removal for exhaust gas from diesel engine has been addressed due to the more stringent legislation and environmental concerns. MnCo₂O₄ catalysts were systematically prepared using glucose as a fuel via the auto-combustion method and applied for soot removal. The as-prepared samples were characterized by X-ray diffraction (XRD), O₂-temperature-programmed oxidation (TPO) reaction and H₂-temperature-programmed reduction reaction (H₂-TPR). The catalytic activities for soot combustion were evaluated by micro activity test (MAT) with a tight contact mode between soot and catalysts. Compared with catalysts prepared by the solid state method without glucose, auto-combustion method in the presence of glucose can decrease the synthetic temperature, avoiding high temperature treatment and sintering. The catalysts prepared with glucose could catalyze soot oxidation effectively and the derived values of T₁₀, T₅₀, and T₉₀ were 326, 408, and 468 °C in a tight contact mode, respectively, showing a significant drop of T₁₀, T₅₀, and T₉₀ by 156, 177, and 178 °C for non-catalytic reaction.

Keywords: Spinel type ; Soot ; Auto-combustion method ; MnCo₂O₄ ; Catalyst 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-018-0397-7

Chemical Papers 72 (8) 1973–1979 (2018)