期刊
JOURNAL OF CO2 UTILIZATION
卷 37, 期 -, 页码 55-64出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jcou.2019.11.029
关键词
CO2 hydrogenation; Methanol production; Cu/Plate ZnO model catalysts; Cu-ZnO interface; Active site structures
资金
- National Natural Science Foundation of China [91645119, 21976059, 51878292]
- Fundamental Research Funds for the Central Universities [2017ZD076]
- Guangzhou science and technology plan [201607010095]
- Natural Science Foundation of Guangdong Province, China [2019A1515011849]
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University [201602]
Plate-like ZnO, dominantly exposed (002) polar facet, supported Cu catalysts were prepared by impregnation method as model catalysts for CO2 hydrogenation to methanol under the real reaction conditions. The catalysts were thoroughly characterized by Scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), in situ Raman spectra, Temperature-programmed reduction (H-2-TPR) and CO2 Temperature-programmed desorption (CO2-TPD). Catalyst microstructures can be obviously tuned through the increasing of Cu content, interface constituted by Cu-Plate ZnO direct contact, interface constituted by Cu (on ZnO) covered by migrated ZnOx and interface constituted by isolated Cu nanoparticles covered by migrated ZnOx. These microstructures displayed different catalytic performance for CO2 hydrogenation to methanol; among them, interface caused by the migrated ZnOx covered Cu nanoparticles should play vital roles for methanol production.
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