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Alumina carrier and preparation method thereof as well as hydrogenation catalyst and preparation method thereof

A technology of alumina carrier and hydrogenation catalyst, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, catalyst carrier, etc., which can solve the problem of difficulty in preparing alumina carrier and limited pore expansion and other issues to achieve the effect of improving the ability to remove and accommodate metals

Active Publication Date: 2013-11-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pore-enlarging effect of the physical pore-enlarging agent and the chemical pore-enlarging agent is limited, therefore, on the basis of the prior art, it is difficult to obtain a pore by means of the pore-enlarging effect of the physical pore-enlarging agent and the chemical pore-enlarging agent Alumina support with larger diameter

Method used

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  • Alumina carrier and preparation method thereof as well as hydrogenation catalyst and preparation method thereof
  • Alumina carrier and preparation method thereof as well as hydrogenation catalyst and preparation method thereof
  • Alumina carrier and preparation method thereof as well as hydrogenation catalyst and preparation method thereof

Examples

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preparation example Construction

[0018] The present invention also provides a method for preparing an alumina carrier, the method comprising molding, drying and calcining a mixture containing hydrated alumina and water, wherein the hydrated alumina contains pseudoboehmite and basic aluminum carbonate Ammonium.

[0019] In the preparation method of the alumina carrier provided by the present invention, since the hydrated alumina contains basic ammonium aluminum carbonate, on the one hand the basic ammonium aluminum carbonate can act as a pore-enlarging agent; Ammonium aluminum carbonate can act as a skeleton support, so that an alumina support with a large pore diameter can be produced according to the preparation method of the alumina support. In order to make the alumina carrier made of the hydrated alumina have better thermal stability and mechanical strength, preferably, in the hydrated alumina, the content of the pseudo-boehmite is 85-99 wt. %, the content of basic aluminum ammonium carbonate is 1-15% by...

Embodiment 1

[0050] This example is used to illustrate the alumina carrier and its preparation method provided by the present invention.

[0051] (1) Preparation of hydrated alumina

[0052] Take by weighing 483 grams of aluminum chloride (purchased from Beijing Chemical Plant), add to deionized water and dissolve to make a concentration of 1 mol / liter solution a1; weigh 210 grams of sodium metaaluminate (purchased from Tianjin Jin Department of Fine Chemical Industry Research Institute), added to deionized water and dissolved to make a concentration of 3.0 mol / liter solution b1; 230 grams of ammonium carbonate (purchased from Beijing Chemical Reagent Company) was weighed, added to deionized water and dissolved to prepare into a solution c1 with a concentration of 0.5 mol / L. The solution a1 and the solution b1 are simultaneously added into a 10-liter gelation tank in parallel flow for reaction, and the pH value in the gelation tank is maintained at 8.5 by controlling the inflow speed of t...

Embodiment 2

[0068] This example is used to illustrate the alumina carrier and its preparation method provided by the present invention.

[0069] (1) Preparation of hydrated alumina

[0070]Take by weighing 666 grams of aluminum sulfate (purchased from Beijing Chemical Plant), add to deionized water and dissolve to make a concentration of 0.5 mol / liter solution a2; weigh 210 grams of sodium metaaluminate (purchased from Tianjin Jinke Institute of Fine Chemicals), added to deionized water and dissolved to make a concentration of 2.0 mol / liter solution b2; 370 grams of ammonium bicarbonate (purchased from Beijing Chemical Reagent Company) was weighed, added to deionized water and dissolved to prepare into a solution c2 with a concentration of 1.0 mol / L. The solution a2 and the solution b2 are simultaneously added to a 10-liter gelation tank in parallel flow for reaction, and the pH value in the gelation tank is maintained at 6.0 by controlling the inflow speed of the solution a2 and the sol...

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Abstract

The invention provides an alumina carrier, wherein the average pore diameter of the alumina carrier is 25-35nm; the most probable pore diameter is 21-30nm; and the volume of pores with diameters of 10-60nm is 95-99.8% of the volume of total pores. The invention also provides a preparation method of the alumina carrier, comprising the steps of carrying out molding, drying and roasting on a mixture containing hydrated alumina and water, wherein the hydrated alumina contains pseudo-boehmite and ammonium aluminium carbonate hydroxide. The invention also provides a hydrogenation catalyst containing the alumina carrier and a preparation method thereof. The pore diameters of the alumina carrier provided by the invention are increased, therefore, the abilities of removing and accommodating metals of the hydrogenation catalyst containing the alumina carrier are improved and the hydrogenation catalyst is suitable for hydrogenation and demetalization treatments of inferior residual oil with higher metal content.

Description

technical field [0001] The invention relates to an alumina carrier and a preparation method of the alumina carrier, and also relates to a hydrogenation catalyst containing the alumina carrier and a preparation method of the hydrogenation catalyst. Background technique [0002] Activated alumina has excellent properties such as good thermal stability, certain activity, suitable pore structure, suitable specific surface area, high mechanical strength, etc., and has become the carrier of various catalysts in the petrochemical industry, especially hydrogenation catalysts Carrier. Activated alumina is formed by calcination of hydrated alumina such as pseudoboehmite at a certain temperature. [0003] Heavy oil hydrogenation technology is an effective way for refineries to improve economic efficiency and realize efficient and clean energy utilization, and has attracted widespread attention. Heavy oil, especially low-quality residual oil with high metal content, has the characteri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J21/04B01J23/883C10G45/08
Inventor 胡大为刘滨杨清河曾双亲聂红
Owner CHINA PETROLEUM & CHEM CORP
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