Synthesis of hollow CuO/ZnO/Al 2 O 3 composite microspheres for catalysing carbon dioxide hydrogenation

Micro & nano letters

article

Hai-feng Tian¹  Lei Yu¹  Jian Ding¹  Fei Zha¹  Xiao-hua Tang¹  Yue Chang¹ 

[1] College of Chemistry & Chemical Engineering, Northwest Normal University

关键词: X-ray diffraction;    transmission electron microscopy;    precipitation;    desorption;    thermal analysis;    adsorption;    nitrogen;    zinc compounds;    copper compounds;    catalysis;    scanning electron microscopy;    aluminium compounds;    carbon compounds;    hydrogenation;    hollow microspheres structure;    composite metal oxides;    X-ray powder diffraction;    transmission electron microscopy;    carbon dioxide hydrogenation;    homogeneous hollow microspheres;    carbon dioxide;    hydrogenation;    adsorption–desorption isothermal;    scanning electron microscopy;    thermogravimetric analysis;    hydrothermal treatment;    carbonaceous saccharide;    space velocity;    co-precipitation method;    temperature 180.0 degC;    temperature 262.0 degC;    pressure 3.0 MPa;    N2;    CuO-ZnO-Al2O3;    CO2-H2;    CO2;   

DOI  :  10.1049/mnl.2018.5801

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Homogeneous hollow CuO–ZnO–Al 2 O 3 microspheres, which were synthesised, used carbonaceous saccharide as a template by the hydrothermal treatment at 180°C. The hollow microspheres structure of composite metal oxides was characterised by the methods of X-ray powder diffraction, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy and N 2 adsorption–desorption isothermal. In the evaluation of the hydrogenation of carbon dioxide, the synthesised hollow CuO/ZnO/Al 2 O 3 composite microspheres exhibited higher selectivity and yield of methanol than CuO/ZnO/Al 2 O 3 prepared by a co-precipitation method. An optimum yield of methanol of 15.3% with the 24.7% CO 2 per pass conversion was obtained under the reaction conditions of pressure at 3.0 MPa, space velocity at 1800 ml g cat −1 h −1 , the volume ratio of CO 2 /H 2 at 1:3 and temperature at 262°C.

【 授权许可】

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