Hydrated alumina containing metallic element and method for preparing the same

Abstract

A hydrated alumina containing metal elements and the preparation method is provided. The alumina after being roasted contains 50-99 percent by weight of alumina and one species or a plurality of species of metal oxide selected from Cu, Fe, V, Cr, Mn, Zr, Zn, Co, Ti and Mo, wherein firstly, the content of the Cu, Fe, V, Cr, Mn and Zr is 0.5-50 percent; secondly, the content of the Zn, Co, Ti and Mo is 10- 50 percent. The catalyst adopting the hydrated alumina preparation provided by the present invention has higher heavy oil conversion capability and lower gasoline sulfur content.

Description

A kind of hydrated aluminum oxide containing metal element and preparation method thereof technical field The invention relates to hydrated alumina and a preparation method thereof, in particular to a hydrated alumina with a metal additive-containing pseudo-boehmite structure and a preparation method thereof. Background technique Pseudo-boehmite (α-Al2O3.nH2O, n=1.4~2.0) is a boehmite type with incomplete crystallization, also known as colloidal boehmite or pseudo-boehmite, formed by thermal decomposition γ-Al2O3 has a good mesopore structure, specific surface area, and very active chemical properties, and is widely used in chemical and petroleum refining and other fields. Pseudo-boehmite and its processed products are porous substances, which have both molecular sieve effect and adsorption properties, and are used as adsorbents, desiccants, catalysts and carriers. It has good thermal and hydrothermal stability under catalytic cracking operating conditions, and is a high-...

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Problems solved by technology

The hydrated alumina with the above-mentioned pseudo-boehmite structure provided by the prior art can be used as a matrix material, but when these uniformly dispersed hydrated alumina additives are used to prepare catalysts such as catalytic cracking, the heavy oil cracking performance of the catalyst, Light oil yield and sulfur reduction performance need to be improved

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