Reduction state hydrogenation catalyst and preparation method thereof

Abstract

The invention discloses a reduction state hydrogenation catalyst and a preparation method thereof. The reduction state hydrogenation catalyst comprises a hydrogenation active metal component, an auxiliary agent and a carrier, wherein the hydrogenation active metal component is nickel oxide, the auxiliary agent is one or more of IIA group alkaline earth metal, IB group transition metal, IIB group transition metal, VIII group transition metal and lanthanide series metal, and the carrier is petroleum coke-based activated carbon. The preparation method comprises the following steps: uniformly mixing petroleum coke, metal soluble salt containing hydrogenation activity, metal soluble salt containing auxiliaries and an activating agent, and activating same; carrying out steam treatment on the obtained sample; cooling, introducing oxygen-containing gas for treatment, and finally washing and drying to obtain the reduction-state hydrogenation catalyst. According to the catalyst, petroleum coke-based activated carbon is used as a carrier, so that dispersion of active metal components is facilitated, more high-hydrogenation activity centers are easy to form, and the catalyst has higher hydrogenation activity.

Description

technical field [0001] The invention belongs to the technical field of oil refining and chemical industry, and relates to a catalytic material and a preparation method thereof, in particular to a reduced state hydrogenation catalyst and a preparation method thereof. Background technique [0002] Petroleum resin is a functional resin with a relatively low molecular weight, which has the characteristics of thickening, cohesiveness and compatibility with other resins. Widely used in coatings, adhesives, printing inks, rubber additives, paper additives and other fields. Petroleum resin can be divided into C and C according to different raw materials and properties. 5 Petroleum resin, C 9 Petroleum resin, C 5 -C 9 Copolymerized petroleum resin, etc. At present, the main source of preparing petroleum resin is the by-product of petroleum cracking ethylene. Due to the difference of cracking raw material and cracking depth, the output of this by-product is generally 10% to 20% o...

AI Technical Summary

Problems solved by technology

[0005] Precious metal catalysts have strong olefins and aromatics saturation capabilities, and achieve ideal results in the hydrogenation and decolorization of petroleum resins. However, precious metal catalysts have the following disadvantages: first, the preparation cost of precious metal catalysts is much higher than that of non-precious metal catalysts; secondly, precious metal catalysts Catalysts have very strict requirements on the impurity content in the raw material, especially the sulfur content in the raw material.

[0006] CN103386302A discloses a kind of petroleum resin hydrogenation catalyst, with Al 2 o 3 As a carrier, loaded with precious metal Pd and oxide additives, metal palladium microcrystals with a particle size of less than 3nm accounted for more than 90%. 2- Poor tolerance and easy poisoning deactivation, catalyst life is affected

However, the above-mentioned catalysts are catalysts in an oxidized state, and need to be reduced before the reaction in order to exert their hydrogenation activity, and the use steps are cumbersome.

Images