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Higher alcohols synthesis from syngas over lanthanum-promoted CuZnAl catalyst 被引量:2
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作者 Xuan Deng Yong-Jun Liu Wei Huang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2018年第1期319-325,共7页
CuZnAl catalysts with different La loadings were prepared by a complete liquid phase method and tested for higher alcohols(C_(2+)OH) synthesis from syngas at the conditions of 250–290 ℃, 4.5 MPa, feed low rate ... CuZnAl catalysts with different La loadings were prepared by a complete liquid phase method and tested for higher alcohols(C_(2+)OH) synthesis from syngas at the conditions of 250–290 ℃, 4.5 MPa, feed low rate = 150 mL/min and H_2/CO = 2. The catalysts were characterized by XRD, H_2-TPR, NH_3-TPD, N_2 adsorption, XPS, and TEM techniques. Characterization results showed that the incorporation of La into CuZnAl catalysts resulted in the decrease of crystallite size of Cu^0 and a strong interaction among copper and zinc or aluminum oxides. Especially, the incorporation of La increased the amount of weak acid and the Cu content on catalyst surface, which was speculated to contribute the formation of higher alcohols. Among these La-promoted CuZnAl catalysts, the La0.1 catalyst exhibited the best catalytic performance and the selectivity to higher alcohols reached above 60% when the reaction temperature was 290 ℃. 展开更多
关键词 Syngas C2+OH CuZnAl La promoter slurry bed reactor
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