4.7 Article

Catalytic upgrading of ethanol to higher alcohols over ordered mesoporous Cu-La-Al composite metal oxides

Journal

APPLIED SURFACE SCIENCE
Volume 599, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.apsusc.2022.153851

Keywords

Cu-La-Al composite metal oxides; CuAl2O4 active phase; Ethanol; Higher alcohols

Funding

  1. Natural Science Foun-dation of Zhejiang Province [LY19B030007]

Ask authors/readers for more resources

Ordered mesoporous Cu-La-Al composite metal oxides were synthesized via an evaporation induced self-assembly method and exhibited excellent catalytic activity, selectivity, and stability in upgrading ethanol to higher alcohols. The superior performance was attributed to the presence of octahedrally coordinated Cu2+ and acid-base sites on the catalyst surface, as well as the highly stable CuAl2O4 active phase.
Ordered mesoporous Cu-La-Al composite metal oxides were first synthesized via an evaporation induced selfassembly method and applied in upgrading of ethanol to higher alcohols. The Cu-La-Al composite metal oxide with optimal molar ratio of Cu/La/Al (4/2.6/100) exhibited selectivity and yield to higher alcohols up to 72.2% and 37.7%, respectively. What's more remarkable was that the catalyst exhibited ultra-high stability during 500 h on-stream evaluation. Various characterization techniques including N2 adsorption-desorption, XRD, TEM, TPR, XPS, UV-vis, 27Al NMR, NH3-TPD and CO2-TPD revealed that the synergy of a large amount of octahedrally coordinated Cu2+ and acid-base sites on the surface of Cu-La-Al composite metal oxides was responsible for the excellent catalytic activity and selectivity while the superior stability of the catalyst could be largely attributed to presence of the highly stable CuAl2O4 active phase besides the embedding effect of CuAl2O4 and La2O3 into skeleton of the composite oxides.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available