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A zinc oxide material containing zinc-aluminate spinel and a preparing method thereof

A zinc-aluminum spinel and zinc oxide technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve the problem of long processing time and achieve large ratio surface area, reducing the effect of the hydrothermal treatment process

Active Publication Date: 2017-05-10
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of synthesizing the ternary hydrotalcite-like precursor, hydrothermal treatment is required, and the treatment time is relatively long

Method used

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  • A zinc oxide material containing zinc-aluminate spinel and a preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] Dissolve 800g of zinc nitrate in 4L of water to form a zinc-containing solution, and dissolve 120g of sodium metaaluminate and 120g of sodium carbonate in 1.7L of water to form an aluminum-containing solution. Take 2L zinc-containing solution, control the system temperature at 60°C, add aluminum-containing solution dropwise to it until the pH value reaches 9, stop adding the aluminum-containing solution dropwise, add the remaining 2L zinc-containing solution dropwise to the mixing system, and continue to drop the Aluminum solution until the pH value reaches 9, the total titration time is 4h. The obtained mixture was aged at 85°C for 4 hours, cooled and washed until neutral, dried at 120°C in an air atmosphere for 5 hours, and calcined at 500°C for 6 hours to obtain a zinc oxide sample 1 containing zinc-aluminum spinel, with a zinc oxide content of 60 %, the specific surface area is 210m 2 / g.

Embodiment 2

[0040] Dissolve 1.6kg of zinc nitrate in 8L of water to make a zinc-containing solution, and dissolve 0.11kg of sodium metaaluminate and 0.38kg of sodium carbonate in 3.4L of water to make an aluminum-containing solution. Divide the zinc-containing solution into 4 equal parts, each 2L. Take 2L zinc-containing solution, control the system temperature to 75°C, add aluminum-containing solution dropwise to it until the pH value reaches 8.7; stop adding aluminum-containing solution, then add 2L zinc-containing solution dropwise to the mixing system, and continue to drop aluminum-containing solution Titrate until the pH value reaches 8.7; alternately titrate the aluminum-containing solution and the zinc-containing solution until all the zinc-containing solutions are added to the mixing system, and add the aluminum-containing solution dropwise until the pH reaches 8.7. The total titration time is 6 hours. The obtained mixture was aged at 90°C for 6 hours, cooled and washed until neut...

Embodiment 3

[0045] Dissolve 296g of zinc acetate in 2L of water to form a zinc-containing solution, and dissolve 47g of sodium metaaluminate and 74g of sodium carbonate in 0.85L of water to form an aluminum-containing solution. Divide the zinc-containing solution into 3 equal parts, each 0.67L. Take 0.67L of zinc-containing solution, control the temperature of the system at 55°C, and dropwise add aluminum-containing solution to it until the pH value reaches 9.3; stop adding aluminum-containing solution, then add 0.67L of zinc-containing solution to the mixing system, and continue to dropwise add Aluminum solution until the pH value reaches 9.3; stop adding aluminum-containing solution dropwise, then add 0.67L zinc-containing solution dropwise to the mixing system, add aluminum-containing solution dropwise until the pH reaches 9.3, and the total titration time is 3h. The obtained mixture was aged at 80°C for 7 hours, cooled and washed to neutral, dried at 100°C in an air atmosphere for 8 h...

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Abstract

The invention relates to a zinc oxide material containing zinc-aluminate spinel. The zinc oxide content based on oxides is 55-90%, and the specific surface area of the zinc oxide material is 150-220 m<2> / g. The zinc oxide material is a zinc oxide material which contains the zinc-aluminate spinel, which is prepared by direct low-temperature calcination, which is uniformly dispersed, and the specific surface of which can be regulated in a range of 150-220 m<2> / g. The zinc oxide material is used for preparing adsorption desulphurization catalysts for gasoline or diesel oil treatment, can be added into an FCC catalyst as a desulphurization auxiliary agent, and can be adopted as a hydrodesulfurization catalyst carrier to load active components and then used for hydrodesulfurization of gasoline or diesel oil.

Description

technical field [0001] The invention relates to a zinc oxide material containing zinc-aluminum spinel, mainly through the non-constant pH alternate titration of aluminum-containing sodium carbonate solution and zinc-containing solution to prepare a layered material of zinc-aluminum hydrotalcite structure. Zinc oxide converted into zinc-aluminum spinel with uniform dispersion and high specific surface area by low-temperature roasting can be used for adsorption desulfurization materials, FCC catalyst desulfurization additives and hydrodesulfurization carriers. Background technique [0002] Composite materials of zinc oxide and alumina are often used as desulfurization catalytic materials in the fields of adsorption desulfurization and hydrodesulfurization. At present, the common preparation methods of this material include impregnation method, mechanical mixing method, co-precipitation method and peptization method. Among them, since the impregnation method and the mechanical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/06B01J35/10C10G45/04
CPCC10G45/04B01J23/005B01J23/06C10G2300/202B01J35/615
Inventor 王廷海吴杰常晓昕李自夏向永生高源姚文君王学丽
Owner PETROCHINA CO LTD
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