A Cu/Zn/Al/Zr Fibrous Catalyst that is an Improved CO2 Hydrogenation to Methanol Catalyst
A series of Cu/Zn/Al/Zr CO2 hydrogenation to methanol catalysts containing different ratios of Al/Zr were prepared using a co-precipitation procedure. SEM, TEM, and XRD characterization showed that all the catalysts comprised crystallites in a fibrous structure and their Cu/Zn crystallite dispersions were better than that of a commercial (COM) catalyst. It is suggested that the high dispersion and stability of the Cu/Zn crystallites due to the fibrous structure enhanced CO2 hydrogenation, and the added Zr component further improved the catalyst. A 5% Zr addition gave a methanol space time yield 80% higher than that on the COM catalyst.
KeywordsCu/Zn/Al/Zr CO2 hydrogenation
The authors gratefully acknowledge the financial supports by the Chinese National Science Foundation (nos. 20576060, 20606021), and by Specialized Research Fund for the Doctoral Program of Higher Education (no. 20050003030).
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