期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 2021, 期 35, 页码 3601-3610出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.202100464
关键词
Carbon dioxide; Copper; Hydrogenation; Mesostructures; Methanol
资金
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [20KJB150001]
- Natural Science Foundation of Jiangsu Province [BK20191046]
Experimental results showed that the weight ratio of Al2O3 and ZnO affected the morphology of the mesoporous AlZnO supports and surface properties of the mesostructured Cu/AlZnO catalysts. Meanwhile, ZnO added into catalysts increased the strength of surface basicity and the surface concentration of Zn species, which promoted the catalytic activity of CO2 hydrogenation to methanol. The well mesostructure heightened the stability of supported Cu catalyst due to the high dispersion of Cu nanoparticles.
In this work, the mesostructured Cu/AlZnO catalysts were prepared for the CO2 hydrogenation to methanol. Experimental results showed that the weight ratio of Al2O3 and ZnO affected the morphology of the mesoporous AlZnO supports and surface properties of the mesostructured Cu/AlZnO catalysts. The AlZnO-9 (the Al2O3 mass within the AlZnO support was 90 wt%) with loose spongy porous structure and high surface area facilitated the Cu nanoparticle dispersion. Thus, the Cu/AlZnO-9 catalyst showed higher exposed Cu surface area (S-Cu) and more exposed CO2 adsorption sites, which accelerated the CO, conversion. Meanwhile, the ZnO added into catalysts increased the strength of surface basicity and the surface concentration of Zn species, which promoted the catalytic activity of CO2 hydrogenation to methanol. In addition, the well mesostructure heightened the stability of supported Cu catalyst due to the high dispersion of Cu nanoparticles.
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