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Hydrated alumina containing metallic element and method for preparing the same

A technology of hydrated alumina and metal elements, used in chemical instruments and methods, catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, etc., to achieve high heavy oil conversion capacity, large average pore size, and low gasoline sulfur The effect of content

Active Publication Date: 2008-02-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1520 grams of pseudo-boehmite, 6000 grams of deionized water and 91.2 grams (by weight, the weight ratio of acid to alumina is 0.1) of hydrochloric acid were mixed under stirring; the resulting mixed slurry was aged at 70 ° C for 2 hours; Then the aged mixed slurry and 401.3 g of Fe(NO 3 ) 3 9H 2 O was mixed to obtain hydrated alumina C1 with a pseudo-boehmite structure, which was dried at 120°C for 4 hours and then calcined at 550°C for 2 hours. The calcined composition was 8.0% iron oxide and 92.0% alumina.

Embodiment 2

[0027] 1000 grams of pseudo-boehmite, 4000 grams of deionized water and 120 grams (by weight, the weight ratio of acid to alumina is 0.2) of hydrochloric acid were mixed under stirring; the resulting mixed slurry was aged at 50 ° C for 4 hours; The aged mixed slurry and 441.2 g of ZnCl 2 Mix to obtain hydrated alumina C2 with a pseudo-boehmite structure, dry it at 120°C for 4 hours, and then bake it at 650°C for 2 hours. The composition after firing is 30.5% zinc oxide and 69.5% aluminum oxide.

Embodiment 3

[0029] 1150 grams of pseudo-boehmite, 6000 grams of deionized water and 82.8 grams (by weight, the weight ratio of acid to alumina is 0.12) of hydrochloric acid were mixed under stirring; the resulting mixed slurry was aged at 79 ° C for 1 hour; The aged mixed slurry was mixed with 466.5 g Co(NO 3 ) 2 ·6H 2 O was mixed to obtain hydrated alumina C3 with a pseudo-boehmite structure, which was dried at 120°C for 4 hours and then calcined at 500°C for 4 hours. The calcined composition was 16.6% cobalt oxide and 83.4% alumina.

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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

technical field [0001] 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 [0002] Pseudoboehmite (α-Al 2 o 3 .nH 2 O, n=1.4~2.0) is a type of boehmite with incomplete crystallization, also known as colloidal boehmite or pseudo-boehmite, which is decomposed by heating to form γ-Al 2 o 3 It has a good mesopore structure, specific surface area, and very active chemical properties, and is widely used in the fields of chemical industry and petroleum refining. 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-quality functional filler for catalytic crack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J21/04B01J23/72B01J23/745B01J23/34B01J23/26B01J23/06B01J37/04C10G11/04
Inventor 于善青朱玉霞田辉平许明德张万虹
Owner CHINA PETROLEUM & CHEM CORP
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