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Process for preparing alumina carrier

A technology of alumina carrier and alumina, which is applied in the field of catalysis, can solve the problems of general carrier strength and carrier inability to meet the requirements, and achieve the effect of good mechanical strength, good mechanical strength and good stability

Active Publication Date: 2009-06-10
SINOPEC NANJING RES INST OF CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] These alumina carriers are all formed by extruding, and the strength of the carrier is average. When the catalyst needs to be operated at a higher pressure, such a carrier cannot meet the requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] ① Take 300g Al 2 o 3 ·H 2 O, heat treatment at 200°C to 300°C, the heat treatment time is 1.5h to 2h; ②Add 9g of graphite and 150g of water to the heat-treated alumina and knead evenly. ③Pellet the kneaded uniform material into particles with a particle diameter of about 1.2mm, and dry at 120°C for 24 hours; ④The dried particles are compressed into cylindrical particles of Φ3×3mm by a tablet machine; ⑤The tablets are roasted at 850°C Obtain the required carrier I.

Embodiment 2

[0018] ① Take 300g Al 2 o 3 ·H 2 O, conduct heat treatment at 200°C to 300°C, and the heat treatment time is 1.5h to 2h; ②Add 9g of stearic acid and 150g of water to the heat-treated alumina, and knead evenly. ③Granulate the uniformly kneaded material into particles with a particle size of about 1.2mm, and dry at 120°C for 24 hours; ④The dried particles are compressed into cylindrical particles of Φ3×3mm by a tablet machine; ⑤The tablets are roasted at 750°C The desired vector II is obtained.

Embodiment 3

[0020] The above-mentioned carriers were tested for their physical and chemical properties, and the results are shown in the table below:

[0021]

[0022] The test results show that the carrier prepared by the invention has good mechanical strength, suitable specific surface and pore structure.

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PUM

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Abstract

The invention belongs to the technical field of catalysis and relates to a method for preparing an alumina carrier. The carrier is prepared by mixing alumina (or pseudobochmite) with an adhesive and a pore-forming material and performing granulation, drying, tabletting and forming and roasting. The carrier prepared by the method has high mechanical strength, has the radial crushing resistant force reaching more than 300 N / cm, can be used as a carrier of a hydrogenation catalyst, and is particularly suitable to be used as a carrier of a hydrogenation catalyst containing compounds with larger molecular dimension such as benzene or compounds containing benzene rings.

Description

Technical field: [0001] The invention belongs to the technical field of catalysis, and in particular relates to a method for preparing an alumina carrier. The carrier is used to prepare a catalyst by an impregnation method, and is particularly suitable as a carrier of a hydrogenation catalyst. Background technique: [0002] The impregnation method is one of the important methods for preparing solid catalysts. To prepare catalysts by impregnation method, it is necessary to prepare a carrier with a certain shape, then impregnate soluble metal compounds into the inner pores of the carrier, and then obtain a supported catalyst through appropriate heat treatment. The active components of the catalyst prepared by the impregnation method have high dispersion and high utilization rate, and are widely used in chemical production. [0003] The carrier can play the following roles on the catalyst: (1) improve the mechanical strength of the catalyst, (2) increase the effective surface a...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J21/04
Inventor 魏士新王金利施翔宇张觅吴相红姜勤张浩纪容昕
Owner SINOPEC NANJING RES INST OF CHEM IND CO LTD
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