Zirconia-alumina composite oxide carrier and method for preparing same

A composite oxide and alumina support technology, which is applied in the direction of catalyst activation/preparation, catalyst support, chemical instruments and methods, etc., can solve the problems of restricted diffusion of macromolecular reactants or products, and achieve extended operation period and increased The effect of deposition amount and large orifice

Active Publication Date: 2010-11-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the addition of a physical pore-enlarging agent, the formed orifice is an ink bottle type, which limits the diffusion of macromolecular reactants or products.

Method used

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  • Zirconia-alumina composite oxide carrier and method for preparing same
  • Zirconia-alumina composite oxide carrier and method for preparing same

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Under stirring conditions, 750g of aluminum nitrate nonahydrate, 42g of zirconium oxychloride and 105g of urea were mixed and heated to 100°C, and added to the mixture of 80g of polyisobutylene triethanolamine maleate and 148g of 150HVI neutral oil at the same temperature , form a super solubilized micelle group, mix uniformly, and then react at 130° C. for 10 hours to obtain a nano zirconium hydroxide-aluminum hydroxide gel. Wash three times with 200ml of distilled water, and dry at 120°C for 8 hours. Mix 70 g of nano zirconium hydroxide-aluminum hydroxide gel dry powder and 30 g of pseudo-boehmite evenly. Mix 6g of dilute nitric acid (mass concentration 17%), 60g of water and 10g of ethanol evenly, then add to the mixture of nano zirconium hydroxide-aluminum hydroxide gel dry powder and binder, stir evenly, and mix on a mixer Uniform, and then shaped in the extruder, the pressure is controlled at 10MPa. The molded product was dried at 100°C for 10 hours, calcined at...

Embodiment 2

[0048]Under stirring conditions, 750g of aluminum nitrate nonahydrate, 322g of zirconium oxychloride, and 210g of urea were mixed and heated to 100°C, and added to the mixture of 80g of polyisobutylene triethanolamine maleate and 148g of 150HVI neutral oil at the same temperature , form a super solubilized micelle group, mix uniformly, and then react at 130° C. for 10 hours to obtain a nano zirconium hydroxide-aluminum hydroxide gel. Wash three times with 200ml of distilled water, and dry at 120°C for 8 hours. Mix 80 g of nano zirconium hydroxide-aluminum hydroxide gel dry powder and 20 g of pseudo-boehmite evenly. Mix 6g of hydrochloric acid, 60g of water and 10g of ethanol evenly, then add to the mixture of nano-zirconium hydroxide-aluminum hydroxide gel dry powder and binder, stir evenly, mix evenly on the mixer, and then put it on the extruder Molding in middle, control pressure at 10MPa. The molded product was dried at 100°C for 10 hours, calcined at 240°C for 3 hours, ...

Embodiment 3

[0050] Mix 110g of second-line dewaxed oil and 31g of SP-80, heat to dissolve at 90°C, and mix well; heat 750g of aluminum nitrate nonahydrate and 620g of zirconium oxychloride to 80°C to melt, slowly add to the above mixture, and mix for 20 minutes to form Uniform super solubilized colloid, mix well. 220 g of saturated ammonia water at 20° C. was added dropwise and aged for 3 hours to obtain a nano zirconium hydroxide-aluminum hydroxide gel. Wash three times with 200ml of distilled water, and dry at 120°C for 10 hours. Mix 138.8g of nano zirconium hydroxide-aluminum hydroxide gel dry powder with 92.5g of pseudoboehmite; 2.31g of acetic acid, 189g of water and 2.31g of cosolvent methanol are mixed evenly, and are mixed evenly on a mixer, and then Molded in extruder, control pressure at 30MPa. The molded product was dried at 130°C for 30 hours, calcined at 240°C for 10 hours, and calcined at 850°C for 4 hours, wherein the heating rate was 5°C / min to obtain the zirconia-alumin...

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Abstract

The invention discloses a zirconia-alumina composite oxide carrier and a method for preparing the same. The carrier is prepared from a zirconium hydroxide-aluminum hydroxide gel serving as a raw material by using a super-solubility micelle method. Because the gel contains a surfactant and hydrocarbon components, zirconia nanoparticles and alumina nanoparticles formed after dehydration of polymerized zirconium hydroxide and aluminum hydroxide still have rod-like basic structures after shaping and roasting, and the nanoparticles are disorderly stacked into a frame structure. The carrier has large pore volume, large aperture, high porosity, large orifices on outer surface and high pore penetrability, and particularly for high molecules, the carrier can prevent a catalyst from becoming inactivated due to blockage of the orifices, contribute to increasing the deposition of impurities and prolong the operating period of the catalyst because the carrier does not have orifices similar to ink bottle-shaped orifices. The carrier can be used in catalytic reactions comprising high molecular reactants or products.

Description

technical field [0001] The invention relates to a zirconia-alumina and zirconium-modified alumina carrier and a preparation method thereof, in particular to a method for hydrotreating residual oil, especially for hydrodesulfurization, hydrodenitrogenation, hydrogenation A macroporous zirconia-alumina composite oxide support for hydrogen removal of residual carbon and a preparation method thereof. Background technique [0002] Hydrodesulfurization and hydrodenitrogenation, as important processes in petroleum refining and synthetic ammonia production using petroleum as raw material, have always been valued by people. However, in recent years, the quality of petroleum has become heavier and worse, while the quality of products has become more stringent, and the requirements for feed materials in subsequent processes have become more and more stringent. In addition, since mankind entered the 21st century, people's awareness of environmental protection has been continuously enha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J21/06B01J21/04B01J35/10B01J37/00C10G45/04
Inventor 王鼎聪刘纪端
Owner CHINA PETROLEUM & CHEM CORP
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