a hydrogenation catalyst

Abstract

The invention discloses a hydrogenation catalyst. The composition of the hydrogenation catalyst includes: hydrogenation active metal component, molecular sieve and amorphous alumina, wherein the hydrogenation active metal component is mainly supported on the molecular sieve, amorphous alumina wraps the molecular sieve, and the hydrogenation active metal component is oxidized The weight ratio of molecular sieve to amorphous alumina is 1:19~19:1. The hydrogenation catalyst of the invention makes the hydrogenation active metal and the acid center of the molecular sieve sufficiently close to adjust the hydrogenation function and the acidic function, and is especially suitable for a hydrogenation catalyst with relatively low requirements on acidity and relatively high requirements on hydrogenation performance.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a hydrogenation catalyst containing molecular sieves and a preparation method thereof. Background technique [0002] Hydrocracking technology is one of the important means for the secondary processing of crude oil and the lightening of heavy oil. Because of its strong adaptability to raw materials, flexible production operations and product solutions, and good product quality, it has become an important way to produce high-quality light clean oil products and solve the source of chemical raw materials. [0003] Hydrocracking catalysts are generally dual-functional catalysts, and their cracking activity and hydrogenation activity are respectively provided by the acidic component and hydrogenation active component in the catalyst. [0004] The acidic component of the catalyst is generally provided by molecular sieves contained in the catalyst and / or refr...

AI Technical Summary

Problems solved by technology

Among them, the carrier material is prepared by directly adding molecular sieves in the process of forming amorphous silica-alumina. In this way, amorphous silica-alumina is prone to agglomeration, and it is also easy to enter the pores of the other party or block the pores of molecular sieves, which affects the amorphous silica-alumina. The distribution on the molecular sieve, the poor connectivity between the molecular sieve and the amorphous silica-alumina channel, reduces the specific surface area and pore volume of the catalyst, and the distribution of active metals is not easy to control, which makes the hydrogenation function of the catalyst mismatch with the cracking function, affecting the catalyst performance