The iron-based catalysts derived from modified ZIF-8 were prepared, characterized, and applied to CO₂ hydrogenation reaction. The addition of iron and iron/potassium evidently tuned the pyrolysis behavior by forming carbon encapsulated iron nanoparticles and metal nanoparticles inserted hollow sphere, respectively. FeZn-NC and FeZnK-NC exhibited high activity with 29.3% and 34.6% CO₂ conversion, respectively. More importantly, the selectivity to value-added hydrocarbons (i.e., C₂–C₄ ⁼ and C₅₊), which are of great importance to chemical industry and energy, was prominent over these two catalysts, and higher than 54 C-mol%. The FeZn-NC with carbon-encapsulated iron nanoparticles showed a remarkable stability for 126 h on stream, suggesting a promising prospect for industrial application.

制备，表征了改性ZIF-8衍生的铁基催化剂，并将其用于CO ₂加氢反应。铁和铁/钾的添加明显地通过形成碳包封的铁纳米颗粒和插入空心球的金属纳米颗粒明显地调节了热解行为。FeZn-NC和FeZnK-NC表现出高活性，分别具有29.3％和34.6％的CO ₂转化率。更重要的是，对增值烃（即C ₂ –C ₄  ⁼ 和C ₅₊对化学工业和能源至关重要的）在这两种催化剂中都比较突出，并且高于54 C-mol％。带有碳包裹的铁纳米颗粒的FeZn-NC在运行中126 h表现出显着的稳定性，这为工业应用提供了广阔的前景。