催化作用
一氧化碳
傅里叶变换红外光谱
色散(光学)
铜
扫描电子显微镜
锰
化学
氧化物
无机化学
氧化铝
氧化还原
催化剂载体
化学工程
材料科学
冶金
有机化学
复合材料
工程类
物理
光学
作者
Subhashish Dey,Ganesh Chandra Dhal,Рам Прасад
标识
DOI:10.1016/j.md.2017.08.001
摘要
The addition of γ-Al2O3 support into the CuMnOx catalyst enhances the dispersion capacity as compared to unsupported CuMnOx catalysts. There exist strong interactions between the copper, manganese oxide and γ-Al2O3 support. The effect of γ-Al2O3 on the dispersion, active states and reduction behavior of surface supported CuMnOx catalysts have been investigated by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), Scanning electron microscopy with energy-dispersed X-ray (SEM-EDX) and Brunauer Emmett Teller (BET) analysis. The characterization results confirm that Cu+, Mn2+ and Al mostly existed on the effective surface sites of the CuMnOx/γ-Al2O3 catalysts. These results indicate that there is a synergistic interaction between the copper, manganese and aluminum oxide, which is responsible for the high catalytic activity of CO oxidation reactions. In the CuMnOx/γ-Al2O3 catalysts, the 40%CuMnOx/γ-Al2O3 catalyst shows the highest catalytic activity for complete oxidation of CO at 130 °C temperature. The main aim of this paper is to find the optimum percentage of γ-Al2O3 support into the CuMnOx catalyst for total oxidation of CO at a low temperatures. Using γ-Al2O3 support in the CuMnOx catalyst lowers the cost without sacrificing the performance.
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