Role of ZnO in Cu/ZnO/Al2O3 catalyst for hydrogenolysis of butyl butyrate
- Role of ZnO in Cu/ZnO/Al2O3 catalyst for hydrogenolysis of butyl butyrate
- 김성민; 이미은; 최재욱; 서동진; 서영웅
- Hydrogenolysis; Butyl butyrate; Cu/ZnO/Al2O3 catalyst; ZnO function
- Issue Date
- Catalysis communications
- VOL 12, NO 14, 1328-1332
- For hydrogenolysis of butyl butyrate (BB), a series of Cu/ZnO/Al2O3 catalysts with different metal
compositions were prepared, and characterized by N2O chemisorption for measuring Cu surface area and
by chromatographic experiment for determining the heat of BB adsorption. As a result, the presence of ZnO in
Cu-based catalysts was found to enhance the catalytic activity of Cu due to dual function of ZnO. The Cu
surface area was linearly correlated with the butanol productivity, demonstrating that ZnO exerts the
structural function in Cu/ZnO/Al2O3 catalysts. Additionally, the role of ZnO as a chemical contributor was
revealed such that its presence leads to lower activation energy of the surface reaction, thus resulting in
higher Cu catalytic activity obtained at a low temperature such as 200 °C. Consequently, optimizing the Cu/Zn
ratio in Cu/ZnO/Al2O3 catalyst is required to tune its structural and chemical characteristics of Cu metals, and
thus to obtain a higher activity on the hydrogenolysis reaction.
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