▎ 摘　　要

NOVELTY - Preparing a supported iron-based catalyst involves using iron as an active component and a porous material as a carrier, and using physical sputtering to obtain the target product. USE - Method for preparing a supported iron-based catalyst used in preparing hydrocarbon compounds by carbon dioxide hydrogenation (claimed). ADVANTAGE - The method helps in uniform dispersion of iron particles through rotation of the polygonal rotating barrel, is easy to control, prevents generation of small molecular compounds such as methane, methanol, and formic acid that causes reaction inactivation under long-term high-temperature reaction. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: i. a supported iron-based catalyst; and ii. a method for preparing hydrocarbon compounds by carbon dioxide hydrogenation, which involves reacting raw material gas containing carbon dioxide and hydrogen in the presence of a catalyst to obtain hydrocarbon compounds.