Cu/ZnO/ZrO₂와 MFI계열의 제올라이트(HZSM-5, H-Ga-Silioate, H-Fe-Silicate)로 이루어진 혼성촉매상에서 이산화탄소 접촉수소화반응을 수행하였다. MFI계열의 제올라이트중 브뢴스테드 산점양이 가장 많은 HZSM-5를 포함한 혼성촉매가 가장 높은 C₂+ 탄화수소 수율을 나타내었다. HZSM-5를 포함한 혼성촉매 중에서는 SiO₂/Al₂O₃비가 낮을수록, 이온교환 시간이 많을수록 즉 브뢴스테드 산점의 양이 많을수록 C₂+ 탄화수소에 대한 수율이 높았다. HZSM-5에 금속이온을 이온 교환 하였을 경우, HZSM-5 = Ga/HZSM-5 > Zn/HZSM-5의 순서로 활성이 높았는데 이 또한 브뢴스테드 산점수가 많을수록 활성이 증가하였다.

Carbon dioxide hydrogenation reaction was carried out over hybrid catalyst composed of Cu/ZnO/ZrO₂ and MFI zeolites such as HZSM-5, H-Ga-Silicate and H-Fe-Silicate. The hybrid catalyst composed of Cu/ZnO/ZrO₂ catalyst and HZSM-5 showed the highest yield and selectivity to C₂+ hydrocarbon, which seemed to be due to the largest amount of Br nsted acid sites. Higher yield to C₂+ hydrocarbon was obtained over HZSM-5 with lower SiO₂/Al₂O₃ ratio and also with longer ion exchange time, which showed larger amount of Br nsted acid sites, respectively. When a metal ion was exchanged into HZSM-5, the highest yield to C₂+ hydrocarbon was obtained with descending order Ga/HZSM-5=HZSM-5 > Zn/HZSM-5, i.e., with the amount of Bro¨nsted acid sites.