Prepn. of titanium-containing aluminium hydroxide

Abstract

The preparation method of aluminium hydroxide containing titanium is characterized by adding cheap titanium-contained compound in the course of preparing aluminium hydroxide. Said preparation process is simple, low in cost, at the same time the titanium oxide can be uniformly dispersed on the surface of aluminium oxide, so that the influence of the preparation process to aluminium oxide microstructure can be eliminated. Said aluminium hydroxide possesses good peptization property, when it is used for preparing catalyst carrier or catalyst, it can make catalyst easily form and can reduce its cost, and when it is used to prepare catalyst carrier and hydrogenation catalyst, it possesses good physical and chemical properties and application property.

Description

technical field

[0001] The present invention relates to a method for preparing titanium-containing aluminum hydroxide, in particular to a method for adding a low-cost titanium-containing compound in the process of carbonization to prepare aluminum hydroxide and still maintaining the characteristics of carbonization aluminum hydroxide, and A method for preparing titanium-containing aluminum hydroxide that uniformly distributes titanium oxide on the surface of the aluminum hydroxide. Background technique

[0002] Generally, the hydrotreating catalysts for hydrocarbon feeds are all based on γ~Al 2 o 3 Or γ~Al containing a small amount of one or more other elements such as Si, P, Ti, B, Mg, F, etc. 2 o 3 as the carrier. During the catalyst preparation process, the above-mentioned elements can be introduced into the system at different stages, but the purpose of introducing the above-mentioned elements is basically the same, that is, to adjust the acidity of the catalyst and / ...