Abstract: The active phase structure of hydrogenation catalysts and its influencing factors in the preparation process were reviewed, and the analysis of the active phase structure by using traditional characterization methods, in-situ characterization techniques and theoretical calculation methods were focused. By summarizing the analytical characterization techniques and theoretical computational results for the active phase structure, the essence of hydrogenation catalysts has been analyzed. In addition, the problems existing in the current structural analysis methods were also pointed out, and the future development of the research direction of hydrogenation catalyst structure was prospected, aiming to offer a theoretical foundation for the development of high-performance hydrogenation catalysts.

Key words: hydrogenation catalyst, active phase, structure, characterization, theoretical calculation, structure activity relationship