Studies on the synthesis of higher alcohol over modified Cu/ZnO/Al2O3 catalyst
- Studies on the synthesis of higher alcohol over modified Cu/ZnO/Al2O3 catalyst
- 문동주; 박지인; 노영수; 정재선; 이관영
- Higher Alcohols Synthesis; Cu/ZnO/Al2O3; Catalysts
- Issue Date
- Research on chemical intermediates
- VOL 44, NO 6-3822
- Higher alcohol has been considered as a potential fuel additive. Higher alcohol, including C2– C4 alcohol was synthesized by catalytic conversion of syngas (with a ratio of CO/H2 = 1) derived from natural gas over modified Cu/ZnO/Al2O3 catalyst. Modified Cu/ZnO/Al2O3 catalysts promoted by alkali metal (Li) for higher alcohol synthesis (HAS) were prepared at different pH (6, 6.5, 7, 8, and 9) by coprecipitation to control Cu surface area and characterized by N2 physisorption, XRD, SEM, H2-TPR and TPD. The HAS reaction was carried out under a pressure
of 45 bar, GHSV of 4000 h-1, ratio of H2/CO = 1, and temperature ranges of 240 and 280 C. It was found that the malachite phase of copper causes the size of copper to be small, which is suitable for methanol synthesis. Methanol and HAS share a common catalytic active site and intermediate. It was also found that the productivity to higher alcohol was correlated with Cu surface area.
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