Work

Construction of the Co/MnO catalyst surface active sites for efficient dry reforming of methane (DRM) at low-temperature

Year: 2025

Type: article

Abstract: The xCo/MnO catalysts were prepared by impregnation method and used for the low-temperature CH 4 /CO 2 dry reforming (DRM) reaction in this study. The introduction of the Co species not only inhibited the growth of the MnO support particles, improved the reducibility of the catalyst precursors, promoted the formation and uniform dispersion of the Co 0 active centers, but also significantly increased the concentration of the oxygen vacancies and basic site density on the catalysts surface. In the xCo/MnO catalysts, the electronic effects between the Co and Mn species constructed a Co 0 -oxygen vacancy synergistic active centers with Mn 3+ -□-Co 0 structure, which promoted the adsorption and activation of the reactant molecules CH 4 and CO 2 on the corresponding catalysts. Therefore, the low-temperature DRM activity of the xCo/MnO catalysts had been effectively enhanced. The 15Co/MnO catalyst with a Co loading of 15 wt% exhibited the best DRM catalytic performances. Under atmospheric pressure, the conversions of CH 4 and CO 2 could reach 66 % and 40 % at 600 °C, respectively, while at 700 °C, the conversion rates of CH 4 and CO 2 further increased to 91.1 % and 55.9 %. In addition, the 15Co/MnO catalyst had good stability and regeneration performance.

Source: International Journal of Hydrogen Energy

DOI: 10.1016/j.ijhydene.2025.152943

Authors: Wenjing Liu, Qian Yuan, Jianhua Xu, Hongmei Xie, Shuang Chen, Jia Zeng, Guilin Zhou

Institution: Chongqing Technology and Business University

Language: English

Topic: Catalysts for Methane Reforming

Subfield: Catalysis

Field: Chemical Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $3,730