Journal
CATALYSIS LETTERS
Volume 118, Issue 3-4, Pages 264-269Publisher
SPRINGER
DOI: 10.1007/s10562-007-9182-x
Keywords
Cu/Zn/Al/Zr; CO2; hydrogenation
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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.
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