Synthesis of hollow CuO/ZnO/Al 2 O 3 composite microspheres for catalysing carbon dioxide hydrogenation
| Autor: | Jian Ding, Yue Chang, Fei Zha, Lei Yu, Haifeng Tian, Xiao-hua Tang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Materials science Scanning electron microscope Composite number Biomedical Engineering Bioengineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Chemical engineering Transmission electron microscopy General Materials Science Compounds of carbon Methanol 0210 nano-technology Space velocity |
| Zdroj: | Micro & Nano Letters. 14:932-936 |
| ISSN: | 1750-0443 |
| DOI: | 10.1049/mnl.2018.5801 |
| Popis: | Homogeneous hollow CuO–ZnO–Al2O3 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 N2 adsorption–desorption isothermal. In the evaluation of the hydrogenation of carbon dioxide, the synthesised hollow CuO/ZnO/Al2O3 composite microspheres exhibited higher selectivity and yield of methanol than CuO/ZnO/Al2O3 prepared by a co-precipitation method. An optimum yield of methanol of 15.3% with the 24.7% CO2 per pass conversion was obtained under the reaction conditions of pressure at 3.0 MPa, space velocity at 1800 ml gcat −1 h−1, the volume ratio of CO2/H2 at 1:3 and temperature at 262°C. |
| Databáze: | OpenAIRE |
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