负载型钴铜催化剂催化CO消除性能机制

doi:10.16265/j.cnki.issn1003-3033.2026.04.1002

摘要/Abstract

摘要：

为有效消除矿用无轨胶轮车尾气中CO,开发高性能CO消除反应催化剂,利用一步溶剂热合成法制备Co₃O₄/CuO/泡沫镍(NF)负载型催化剂,通过X-射线衍射(XRD)、X-射线光电子能谱(XPS)、扫描电子显微镜(SEM)、比表面积测试(BET)等表征分析,研究合成时间、合成温度、生长基底等合成条件以及催化剂的组成成分、形貌特征等物化特性对催化剂催化性能的影响,明确催化剂的最佳合成条件与CO消除性能;通过氢气程序升温还原(H₂-TPR)与氧气程序升温脱附(O₂-TPD)与原位红外光谱分析,探究催化剂催化CO消除的反应中间过程,揭示催化剂消除CO的催化机制。研究结果表明:Co₃O₄/CuO/NF负载型催化剂的最佳合成条件为140 ℃反应4 h,该条件下所得催化剂可在消除温度150 ℃时完全消除CO,而催化剂对CO的消除过程则遵循MvK机制。

关键词: 负载型催化剂, CO消除, 催化性能, 催化机制, 生长基底

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

中图分类号:

X936

滕弋非, 赫梓岐, 付钰, 全明旭, 刘唱, 崔政. 负载型钴铜催化剂催化CO消除性能机制[J]. 中国安全科学学报, 2026, 36(4): 152-159.

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.

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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