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Influence of modifier (Mn, La, Ce, Zr and Y) on the performance of Cu/Zn/Al catalysts via hydrotalcite-like precursors for CO2 hydrogenation to methanol by Peng Gao; Feng Li; Ning Zhao; Fukui Xiao; Wei Wei; Liangshu Zhong; Yuhan Sun is a Materials Science article available to read on EtoBox.

What is Influence of modifier (Mn, La, Ce, Zr and Y) on the performance of Cu/Zn/Al catalysts via hydrotalcite-like precursors for CO2 hydrogenation to methanol about?

A series of promoted Cu/Zn/Al catalysts derived from hydrotalcite-like precursors were synthesized by co-precipitation method and tested for the CO 2 hydrogenation to methanol. The influence of modifier (Mn, La, Ce, Zr and Y) on the physicochemical properties of Cu/Zn/Al catalysts was studied in detail. The results show that the BET specific surface area, Cu surface area and Cu dispersion increase in the order of Cu/Zn/Al < Cu/Zn/Al/Mn < Cu/Zn/Al/La < Cu/Zn/Al/Ce < Cu/Zn/Al/Zr < Cu/Zn/Al/Y. The similar trend can be observed for the total number of basic sites, while the Zr-modified Cu/Zn/Al catalyst exhibits the highest density and proportion of strongly basic sites. It is also found that the CO 2 conversion depends on the exposed Cu surface area and the CH 3 OH selectivity increases linearly with the increase of proportion of strongly basic sites to the total basic sites. The introduction of Mn, La, Ce, Zr and Y favors the production of methanol and the Y-and Zr-modified Cu/Zn/Al catalysts exhibit the highest CO 2 conversion and CH 3 OH selectivity, respectively.

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Author

Peng Gao; Feng Li; Ning Zhao; Fukui Xiao; Wei Wei; Liangshu Zhong; Yuhan Sun

Publisher

Elsevier BV

Published

2013

Language

EN

Field

Materials Science (Physical Sciences)