Alumina carrier and its preparation method and hydrogenation catalyst and its preparation method

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: 2011-11-30
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 dif

Method used

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  • Alumina carrier and its preparation method and hydrogenation catalyst and its preparation method
  • Alumina carrier and its preparation method and hydrogenation catalyst and its preparation method
  • Alumina carrier and its preparation method and hydrogenation catalyst and its preparation method

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Example Embodiment

[0018] The present invention also provides a method for preparing an alumina carrier. The method comprises forming, drying and roasting a mixture containing hydrated alumina and water, wherein the hydrated alumina contains pseudo-boehmite 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 basic ammonium aluminum carbonate can act as a pore expander, and on the other hand, basic ammonium aluminum carbonate The ammonium aluminum carbonate can play the role of framework support, so that an alumina support with a large pore diameter can be made 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 by weight %, the...

Example Embodiment

[0049] Example 1

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

[0051] (1) Preparation of hydrated alumina

[0052] Weigh 483 grams of aluminum chloride (purchased from Beijing Chemical Plant), add to deionized water and dissolve to make a solution a1 with a concentration of 1 mol / L; weigh 210 grams of sodium metaaluminate (purchased from Tianjin Tianjin Branch Fine Chemical Research Institute), add it to deionized water and dissolve it to make a solution b1 with a concentration of 3.0 mol / L; weigh 230 g of ammonium carbonate (purchased from Beijing Chemical Reagent Company), add it to deionized water and dissolve it to prepare Into a solution c1 with a concentration of 0.5 mol / liter. The solution a1 and the solution b1 are simultaneously added to a 10 liter gel forming tank in a co-current manner for reaction, and the pH value in the gel forming tank is maintained at 8.5 by controlling the flow rate o...

Example Embodiment

[0067] Example 2

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

[0069] (1) Preparation of hydrated alumina

[0070] Weigh 666 grams of aluminum sulfate (purchased from Beijing Chemical Plant), add it to deionized water and dissolve to make a solution a2 with a concentration of 0.5 mol / L; weigh 210 grams of sodium metaaluminate (purchased from Tianjin Jinke Fine Chemical Research Institute), add it to deionized water and dissolve it to make a solution b2 with a concentration of 2.0 mol / L; weigh 370 grams of ammonium bicarbonate (purchased from Beijing Chemical Reagent Company), add it to deionized water and dissolve it to prepare Into a solution c2 with a concentration of 1.0 mol / liter. The solution a2 and solution b2 are simultaneously added to a 10-liter gel forming tank in a co-current manner for reaction, and the pH value in the gel forming tank is maintained at 6.0 by controlling the flow rate of s...

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

Claims

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Application Information

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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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