4results about How to "Improve hydrogenation activity" patented technology

The application discloses a hydrogenation catalyst, a preparation method and application thereof. The catalyst comprises a sulfided hydrogenation catalyst and a complex of auxiliary metals Fe and Mn, wherein the complex of auxiliary metals Fe and Mn contains two or more amine groups and / or imine groups. The preparation method of the hydrogenation catalyst comprises the following steps: (1) preparing a sulfided hydrogenation catalyst; (2) preparing an impregnation solution by mixing a Fe source and a Mn source with a complexing agent; and (3) impregnating the sulfided hydrogenation catalyst in step (1) with the impregnation solution in step (2), and drying to obtain the hydrogenation catalyst. The catalyst can realize reverse conversion of carbon deposition precursors to a certain extent, and is particularly suitable for a hydrogenation treatment process of secondary processing oil containing relatively high unsaturated hydrocarbons.

This invention relates to the field of high-purity benzene production technology, and in particular to a catalyst application process for producing high-purity benzene based on hydrorefining. Using crude benzene as raw material, and Co-Mo / γ-Al₂O₃-La₂O₃ as the hydrogenation catalyst, high-purity benzene is obtained through raw material pretreatment, staged hydrogenation reaction, and product separation and refining. Through steps such as support pretreatment, staged impregnation, staged calcination, and staged reduction, combined with optimized process parameters, the La₂O₃ promoter is uniformly dispersed on the support surface, forming a synergistic effect with the Co and Mo dual active components. This significantly improves the catalyst's hydrogenation activity, anti-carbon deposition performance, and thermal stability, solving the problems of insufficient activity and short service life of traditional catalysts.