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首页> 外文期刊>RSC Advances >A highly active bimetallic oxide catalyst supported on γ-Al2O3/TiO2 for catalytic wet peroxide oxidation of quinoline solutions under microwave irradiation
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A highly active bimetallic oxide catalyst supported on γ-Al2O3/TiO2 for catalytic wet peroxide oxidation of quinoline solutions under microwave irradiation

机译：负载高活性的双金属氧化物催化剂，用于γ-Al2O3 / TiO2，用于微波辐射下喹啉溶液的催化湿过氧化物氧化

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摘要

A new heterogeneous wet oxidation catalyst, Cu–Ni bimetallic oxides supported on γ-Al _(2) O _(3) /TiO _(2) , was synthesized using a wet impregnation method. The physicochemical characteristics of the as-synthesized catalyst were assessed using various modern methods such as scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), X-ray diffraction (XRD), N _(2) adsorption–desorption, and X-ray photoelectron spectroscopy (XPS). Compared with monometallic Cu or Ni oxide catalysts, this new supported Cu–Ni bimetallic oxide catalyst presented a higher activity and stability in quinoline mineralization. The impact of the microwave (MW) power, temperature, pH and H _(2) O _(2) dosage was studied on the basis of the TOC mineralization. At a MW power of 500 W, pH 7, 333 K and a 22.75 mmol L ~(?1) H _(2) O _(2) dosage, an 81% abatement of the TOC was reached. Based on the results of metal leaching and XPS analysis, the stability of the Cu–Ni bimetallic supported catalyst, along with the role of the copper and nickel, is discussed.
机译：使用湿浸渍法合成了新的非均相湿氧化催化剂，在γ-Al _（2）o _（3）o _（3）/ TiO _（2）上负载的Cu-Ni二金属氧化物。使用各种现代方法评估AS合成催化剂的物理化学特性，例如扫描电子显微镜与能量分散X射线光谱（SEM-EDX），X射线衍射（XRD），N _（2）吸附 - 解吸，和X射线光电子能谱（XPS）。与单金属Cu或Ni氧化物催化剂相比，这种新的负载的Cu-Ni双金属氧化物催化剂在喹啉矿化中呈现了更高的活性和稳定性。在TOC矿化的基础上研究了微波（MW）功率，温度，pH和H _（2）o _（2）剂量的影响。在500W，pH 7,333k和22.75mmol L〜（α1）H _（2）O _（2）剂量的MW功率下，达到81％的ANC。基于金属浸出和XPS分析的结果，讨论了Cu-Ni双金属负载催化剂的稳定性，以及铜和镍的作用。

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