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首页> 外文期刊>RSC Advances >Treatment of phenol by catalytic wet air oxidation: a comparative study of copper and nickel supported on gamma-alumina, ceria and gamma-alumina-ceria
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Treatment of phenol by catalytic wet air oxidation: a comparative study of copper and nickel supported on gamma-alumina, ceria and gamma-alumina-ceria

机译：催化湿空气氧化治疗苯酚：γ-氧化铝，二氧化氮和γ-氧化铝 - 氧化钛中负载的铜和镍的对比研究

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摘要

Cu, Ni, CuO and NiO catalysts, prepared by wet impregnation with urea and supported on gamma-Al2O3, CeO2, and Al2O3-CeO2, were evaluated for Catalytic Wet Air Oxidation (CWAO) of phenol in a batch reactor under a milder condition (120 degrees C and 10 bar O-2). The synthesized samples, at their calcined and/or their reduced form, were characterized by XRD, H-2-TPR, N-2 adsorption-desorption, SEM-EDS and DR-UV-Vis to explain the differences observed in their catalytic activity towards the studied reaction. The influence of the support on the efficiency of CWAO of phenol at 120 degrees C and 10 bar of pure oxygen has been examined and compared over nickel and copper species. The SEM-EDS results reveal that the spherical crystalline Cu and Ni were successfully deposited on the surface of gamma-Al2O3, CeO2, Al2O3-CeO2 within 16-90 nm and that they were highly homogeneously dispersed. It was found that catalysts prepared from impregnation solutions of Cu(NO3)(2)center dot 3H(2)O and Ni(NO3)(2)center dot 6H(2)O with urea addition had different textural characteristics and degrees of dispersion of Cu and Ni species. The urea addition in the traditional wet impregnation method was essential to improve the reducibility and degree of dispersion in Ni, and to a lesser extent, in Cu. According to the characterization analysis of H-2-TPR and UV-VIS RD a structure-activity relationship can be determined. The chemical oxygen demand (COD) and GC analyses confirmed the effect of calcined and reduced species for Cu and Ni applied to the catalytic oxidation of phenol, showing their significant impact in the final performance of the catalyst.
机译：通过用尿素浸渍制备的Cu，Ni，CuO和NiO催化剂，并在批量反应器中评价催化湿空气氧化（Cwao）在批量稳定的情况下（ 120℃和10巴o-2）。通过XRD，H-2-TPR，N-2吸附 - 解吸，SEM-EDS和DR-UV-Vis以XRD，H-2-TPR，N-2的合成样品表征在其催化活性中观察到的差异朝着研究的反应。在镍和铜物种上检查并比较了对120℃和10巴的苯酚的Cwao效率的影响。 SEM-EDS结果表明，球形结晶Cu和Ni在16-90nm内成功地沉积在γ-Al2O3，CeO 2，Al 2 O 3-CeO 2的表面上，并且它们高度均匀地分散。发现由Cu（NO 3）（2）中心点3h（2）O和Ni（NO 3）（2）中心的浸渍溶液制备的催化剂具有尿素添加具有不同的纹理特征和分散度Cu和Ni种类。传统的湿浸渍方法中的尿素添加是必不可少的，以改善Ni中的分散性和分散程度，在铜中。根据H-2-TPR的表征分析和UV-VI值RD，可以确定结构 - 活性关系。化学需氧量（COD）和GC分析证实煅烧和钙的钙和Ni的钙和Ni的效果施加到苯酚的催化氧化，显示出对催化剂的最终性能的显着影响。

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  • 来源
    《RSC Advances》 |2019年第15期|共17页
  • 作者

    Guerra-Que Zenaida; Perez-Vidal Hermicenda; Torres-Torres G.; Carlos Arevalo-Perez Juan; Pavon Adib Abiu Silahua; Cervantes-Uribe Adrian; Espinosa de los Monteros A.; Antonia Lunagomez-Rocha Ma.;

  • 作者单位

    Juarez Autonomous Univ Tabasco Lab Catalyt Nanomat Appl Dev Energy Sources &

    Env Appl Sci &

    Technol Res Ctr Tabasco CICTAT DACB Rd Km 1 Cunduacan Jalpa de Mendez Cunduacan 86690 Tabasco Mexico;

    Juarez Autonomous Univ Tabasco Lab Catalyt Nanomat Appl Dev Energy Sources &

    Env Appl Sci &

    Technol Res Ctr Tabasco CICTAT DACB Rd Km 1 Cunduacan Jalpa de Mendez Cunduacan 86690 Tabasco Mexico;

    Juarez Autonomous Univ Tabasco Lab Catalyt Nanomat Appl Dev Energy Sources &

    Env Appl Sci &

    Technol Res Ctr Tabasco CICTAT DACB Rd Km 1 Cunduacan Jalpa de Mendez Cunduacan 86690 Tabasco Mexico;

    Juarez Autonomous Univ Tabasco Lab Catalyt Nanomat Appl Dev Energy Sources &

    Env Appl Sci &

    Technol Res Ctr Tabasco CICTAT DACB Rd Km 1 Cunduacan Jalpa de Mendez Cunduacan 86690 Tabasco Mexico;

    Juarez Autonomous Univ Tabasco Lab Catalyt Nanomat Appl Dev Energy Sources &

    Env Appl Sci &

    Technol Res Ctr Tabasco CICTAT DACB Rd Km 1 Cunduacan Jalpa de Mendez Cunduacan 86690 Tabasco Mexico;

    Juarez Autonomous Univ Tabasco Lab Catalyt Nanomat Appl Dev Energy Sources &

    Env Appl Sci &

    Technol Res Ctr Tabasco CICTAT DACB Rd Km 1 Cunduacan Jalpa de Mendez Cunduacan 86690 Tabasco Mexico;

    Juarez Autonomous Univ Tabasco Lab Catalyt Nanomat Appl Dev Energy Sources &

    Env Appl Sci &

    Technol Res Ctr Tabasco CICTAT DACB Rd Km 1 Cunduacan Jalpa de Mendez Cunduacan 86690 Tabasco Mexico;

    Juarez Autonomous Univ Tabasco Lab Catalyt Nanomat Appl Dev Energy Sources &

    Env Appl Sci &

    Technol Res Ctr Tabasco CICTAT DACB Rd Km 1 Cunduacan Jalpa de Mendez Cunduacan 86690 Tabasco Mexico;

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