LAUSR

Abstract A series of non-metal promoted Cu-based catalysts were prepared and tested for the synthesis of higher alcohols from syngas in slurry bed reactor. The catalysts were characterized by XRD, 27Al-MAS-NMR, H2-TPR, NH3-TPD, CO2-TPD, TG-DTG and XPS techniques. Results showed that non-metal promoters mainly adjusted the acidity/basicity and the Cu content on catalysts surface, which played an important role in higher alcohols formation. Activity results showed that the syngas could be directly catalyzed to higher alcohols over CuZnAl catalyst. Also, it was found that acidic tartaric acid (TA) promoted methanol synthesis, whereas alkaline triethanolamine (TEA) favored the formation of C2+OH selectivity which reached approximately 48.0%.