Kim Ki-Joong, Ahn Ho-Geun
J Nanosci Nanotechnol. 2017 Apr;17(4):2724-727. doi: 10.1166/jnn.2017.13359.
Hydrogenation of carbon dioxide (CO₂) into methanol (CH₃OH) was carried out in the CuO–ZnO based supported gold catalyst prepared by the co-precipitation method. When gold nanoparticles were added to the CuO–ZnO/Al2O₃ catalysts (CuO–ZnO/Au/Al₂O₃), the CO₂ conversion and CH₃OH yield were increased (two times higher than that of CuO–ZnO/Al₂O₃ catalyst) with increasing reaction pressure, but selectivity of CH3OH was decreased. The main reason of this result could suggest the importance gold-oxides interface in CH₃OH formation through hydrogenation of CO₂. Maximum selectivity and yield to CH₃OH over CuO–ZnO/Au/Al₂O₃ were obtained at 250°C and under 15–20 bars.
采用共沉淀法制备的基于CuO-ZnO的负载型金催化剂，将二氧化碳（CO₂）加氢转化为甲醇（CH₃OH）。当向CuO-ZnO/Al₂O₃催化剂（CuO-ZnO/Au/Al₂O₃）中添加金纳米颗粒时，随着反应压力的增加，CO₂转化率和CH₃OH产率提高（比CuO-ZnO/Al₂O₃催化剂高两倍），但CH₃OH选择性降低。该结果的主要原因可能表明金-氧化物界面在通过CO₂加氢生成CH₃OH过程中的重要性。在250°C和15-20巴的条件下，CuO-ZnO/Au/Al₂O₃对CH₃OH的选择性和产率达到最大值。
