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采用创新方法制备的ZrO2、TiO2担载氧化铁催化剂在二氧化碳加氢制低碳烃反应中显示出良好的催化活性和产物选择性，由15wt%Fe/ZrO2给出的最佳结果为：CO2转化率为20%，除甲烷以外的低碳烃的选择性接近70%。还考察了金属Fe担载量及催化剂的预还原温度对催化活性的影响，发现催化活性随金属Fe担载量的增加而呈现“双峰”现象，这种现象可能与活性物种(零价铁及配位不饱和的三价或二价铁)在催化剂表面的几何排布有关，而两种催化剂的最佳还原温度分别为723 K(5wt%Fe/ZrO2)和773 K(5wt%Fe/TiO2)。
The ZrO2 and TiO2-supported iron oxide catalysts prepared by the innovative method show good catalytic activity and product selectivity in the carbon dioxide hydrogenation to low carbon hydrocarbon reaction. The best results from 15wt% Fe / ZrO2 are as follows: CO2 conversion With a rate of 20%, the selectivity to lower hydrocarbons except methane is nearly 70%. The effects of the supported amount of metal Fe and the pre-reduction temperature of the catalyst on the catalytic activity were also investigated. It was found that the catalytic activity exhibited a “bimodal” phenomenon as the supported amount of metal Fe increased. This phenomenon may be related to the activity of the active species (3wt% Fe / ZrO2) and 773K (5wt% Fe / ZrO2) for the two catalysts, respectively. TiO2).