Abstract Mesoporous Ce0.75Zr0.25O2 solid solution powders were successfully synthesized by a co-precipitation method. A combination of 10 wt% copper oxide, manganese oxide, and nickel oxide was added to the Ce0.75Zr0.25O2 support by impregnation method and calcined in the air with a flow rate of 2 ml s−1 at 400 °C for 4 h. All catalysts were characterized using Hydrogen Temperature Programmed Reduction (H2-TPR), X-ray Diffraction (XRD), and Brunauer-Emmet-Teller (BET) isotherm methods to find the interaction between metals, the crystallinity of the catalyst, surface area and pore volume of the catalyst, respectively. The 3.3% CuO-3.3% MnO2-3.3% NiO/Ce0.75Zr0.25O2 catalyst showed higher catalytic activity for benzene oxidation with benzene conversion of 90% at 250 °C and weight hourly space velocity (72,000 mL g−1 h−1) when compared to one metal oxide only. This finding presents a high activity and low-cost catalysts for removing a very lean concentration of benzene containing in the industrial flue gas at low temperatures.

中文翻译：

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以Ce0.75Zr0.25O2为载体的新型金属氧化物催化剂组合CuO、MnO2、NiO在低温下催化氧化苯

摘要 采用共沉淀法成功合成了介孔Ce0.75Zr0.25O2固溶体粉末。通过浸渍法将 10 wt% 的氧化铜、氧化锰和氧化镍的组合加入 Ce0.75Zr0.25O2 载体中，并在空气中以 2 ml s-1 的流速在 400 °C 下煅烧 4 h . 所有催化剂均使用氢气程序升温还原 (H2-TPR)、X 射线衍射 (XRD) 和布鲁诺-埃米特-泰勒 (BET) 等温线方法进行表征，以发现金属之间的相互作用、催化剂的结晶度、表面积和分别为催化剂的孔体积。3.3% CuO-3.3% MnO2-3.3% NiO/Ce0.75Zr0.25O2 催化剂对苯氧化表现出更高的催化活性，在 250 °C 和重时空速下苯转化率为 90%（72, 000 mL g-1 h-1) 与仅一种金属氧化物相比。这一发现提供了一种用于在低温下去除工业烟气中非常贫浓度的苯的高活性和低成本催化剂。