The most promising way of CO2 utilization is its catalytic conversion into valuable products, in particular, the direct hydrogenation of CO2 on heterogeneous catalysts to obtain such products as synthesis gas, hydrocarbons, alcohols, esters, carboxylic acids, and some other organic molecules. Heterogeneous iron-based catalysts possess a special position among the promising candidates for the synthesis of CO2-based hydrocarbons. However, individual iron oxide catalysts have a fairly low surface area, which requires their deposition on the support or modification. CeO2 is rather attractive in catalysis because of its high oxygen storage capacity. The most effective thermal stabilizer of CeO2 is ZrO2. In this work, cerium–zirconium systems with various Ce to Zr ratios were synthesized by the method of coprecipitation in the absence and presence of the hexadecyltrimethylammonium bromide template. These systems were characterized by adsorption of N2, XRD, and DTA-TG-DTG and used as supports for 5% Fe catalysts. The activity of synthesized Fe-containing catalysts was investigated in the reaction of CO2 hydrogenation. The developed surface and the presence of cerium in the supports are the possible reasons for the high activity of Fe-containing catalysts in the hydrogenation reaction of CO2.

中文翻译：

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具有高表面积的 Ce-Zr 材料作为 CO2 加氢的催化剂载体

CO最有前途的方法2利用是其催化转化为有价值的产品，特别是 CO 的直接加氢2在多相催化剂上获得合成气、烃类、醇类、酯类、羧酸和其他一些有机分子等产品。多相铁基催化剂在合成 CO 的有希望的候选者中具有特殊的地位2基碳氢化合物。然而，单个氧化铁催化剂具有相当低的表面积，这需要它们沉积在载体上或进行改性。CEO2由于其高储氧能力，在催化方面颇具吸引力。CeO最有效的热稳定剂2是 ZrO2. 在这项工作中，在十六烷基三甲基溴化铵模板存在和不存在的情况下，通过共沉淀的方法合成了具有不同 Ce 与 Zr 比率的铈-锆体系。这些系统的特点是吸附 N2、XRD 和 DTA-TG-DTG 并用作 5% Fe 催化剂的载体。研究了合成的含铁催化剂在 CO 反应中的活性2氢化。发达的表面和载体中铈的存在是含铁催化剂在 CO 加氢反应中具有高活性的可能原因2.