| 초록 |
The conversion of the greenhouse gas CO2 into higher (C2+) alcohols synthesis via direct CO2 hydrogenation is a promising way to grasp the fixation of CO2 because the C2+ alcohols are value-added chemicals. However, the satisfactory intrinsic activity, selectivity, and stability of active catalysts is not yet achieved. Herein, we report Cu-based catalysts prepared via simple co-precipitation method, showing excellent catalytic performance for CO2 hydrogenation. The optimized catalyst exhibits the highest C2+OH/ROH fraction of 90% with an overall selectivity of alcohols in liquid product stream ca. 70% at CO2 conversion of ca. 22% (mole). The catalyst activity remained almost unchanged till 40 days. The short-range and long-range structural characterizations of catalyst were carried out. The mechanism elucidation through in situ DRIFT was revealed. This catalyst has a great impact on the economic potential of catalysts of a similar class. |
