Performance mechanism of supported cobalt-copper catalyst for CO elimination

doi:10.16265/j.cnki.issn1003-3033.2026.04.1002

Abstract

Abstract:

In order to realize the effective elimination of CO in the tail gas of mine trackless rubber-tyred vehicle, the development of high-performance CO elimination reaction catalyst was focused on in this study. Co₃O₄/CuO/Ni Foam(NF) supported catalyst was prepared by one-step solvothermal synthesis method. Characterization analyses, including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and specific surface area measurement (BET), were conducted to investigate the effects of synthesis conditions such as synthesis time, synthesis temperature, and growth substrate, as well as physicochemical properties such as catalyst composition and morphological characteristics, on catalytic performance of catalyst. The optimal synthesis conditions and CO elimination performance of catalyst were determined. Hydrogen temperature-programmed reduction (H₂-TPR), oxygen temperature-programmed desorption (O₂-TPD), and in-situ infrared spectroscopy were employed to explore the intermediate processes of CO elimination catalyzed by the catalyst, revealing the catalytic mechanism of CO elimination by the catalyst. The results show that the optimal synthesis condition of Co₃O₄/CuO/NF supported catalyst is 140 ℃ for 4 h. Under this condition, the catalyst can completely eliminate CO at the elimination temperature of 150 ℃, and the elimination process of CO by the catalyst follows the Mars-van-Krevelen(MvK) mechanism.

Key words: supported catalyst, CO elimination, catalytic performance, catalytic mechanism, growth substrate

CLC Number:

X936

Teng Yifei, He Ziqi, Fu Yu, Quan Mingxu, Liu Chang, Cui Zheng. Performance mechanism of supported cobalt-copper catalyst for CO elimination[J]. China Safety Science Journal, 2026, 36(4): 152-159.

Figures/Tables 12

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编号	T₁₀₀	T₉₀
CCO-2	210	175
CCN-2	160	152
CCO-4	200	172
CCN-4(CCN-140)	150	138
CCO-6	210	185
CCN-6	170	149
CCN-120	160	146
CCN-160	170	156