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Catalyst carrier with run-through macropores and mesopores, catalyst and preparation method thereof

A technology of catalyst support and large and medium pores, which is applied in the direction of catalyst support, catalytic cracking, chemical instruments and methods, etc., and can solve the problems of support strength and pore penetration.

Inactive Publication Date: 2012-02-15
UNISIZE TECH CHANGZHOU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carrier prepared by this method also has a contradiction between the strength of the carrier and the permeability of the pores.

Method used

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  • Catalyst carrier with run-through macropores and mesopores, catalyst and preparation method thereof
  • Catalyst carrier with run-through macropores and mesopores, catalyst and preparation method thereof
  • Catalyst carrier with run-through macropores and mesopores, catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Carrier Example 1 Preparation of Carbon Black Particles-Solid Fiber Filament Composite as a Template

[0038] Get industrial pseudo-boehmite powder 100g (containing alumina dry base 78.16g), add high wear-resistant carbon black particles (N330) 15.63g, pointed leaf wood fiber silk 0.7816g, 3.92g phosphoric acid (85%), 5.64g acetic acid ( 99.5%), 3.02g of nitric acid (65%), 2.5g of turnip powder and 62g of distilled water, just mix evenly, the method is not required, after kneading, extrude into strips, and finally dry at 120°C for 2h, and roast at 50°C for 4h to obtain an alumina carrier ACF-1.

[0039] According to the above method, the added amount of fiber filaments was changed to 1.5632, 2.3448 g respectively, and other conditions remained unchanged, and the carriers ACF-2 and ACF-3 were prepared sequentially.

[0040] According to the above method, the broad-leaved wood fiber silk was used instead, the addition amount was 2.3448 g, and other conditions ...

Embodiment 2

[0045] Embodiment 2: carbon black particle-solid fiber filament composite as template preparation carrier example 2

[0046] Get industrial pseudo-boehmite powder 100g (containing alumina dry basis 78.16g), add high wear-resistant carbon black particles (N330) 39.08g, pointed leaf wood fiber silk 0.7816g, phosphoric acid (85%) of 3.92g, 5.64g acetic acid (99.5%), 3.02g of nitric acid (65%), 2.5g of turnip powder and 62g of distilled water in an acidic aqueous solution, mixed evenly, kneaded, extruded into strands, finally dried and calcined to obtain alumina carrier ACF-4.

[0047] According to the above method, the added amounts of the fiber filaments were changed to 1.5632 and 2.3448 g, respectively, and other conditions remained unchanged, and the carriers ACF-5 and ACF-6 were sequentially prepared.

[0048] According to the above method, polyethylene terephthalate fiber filaments (synthetic fibers mentioned above) were used instead, the addition amount was 2.3448 g, and ot...

Embodiment 3

[0050] Embodiment 3: carbon black particle-solid fiber filament composite as template preparation carrier example 3

[0051] Get and embodiment 2 middle molar weight Al 3+ Add 0.7816g of pointed-leaved wood fiber silk and 39.08g of high wear-resistant carbon black particles (N330) to the aluminum nitrate solution, and after the ultrasonic dispersion is uniform, stir with magnetic force. During the stirring process, add ammonia solution drop by drop until the pH value is 9, and age for 5h , filtered, dried at 100-120°C for 5 hours, pressed into tablets, and finally calcined at 550°C for 5 hours to obtain an alumina carrier. The specific surface area of ​​the alumina carrier is 240.4m 2 / g, the pore volume is 0.750ml / g, and the average pore diameter is 11.9nm.

[0052] Table 3. Carrier Properties II for Preparation of Carbon Black Particles-Fiber Filament Composite Templates

[0053] carrier

[0054] Note: AC-3, ACF-4, ACF-5, ACF-6 and ACSF-3 are all added with 50 w...

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Abstract

The invention provides a method for preparing a catalyst carrier with macropores and mesopores which are in run-through. The method comprises the following steps of: adding solid cellosilk in the process of preparing or forming the catalyst carrier, so that the solid cellosilk is dispersed in the catalyst carrier; and removing the solid cellosilk by forming and roasting to obtain the catalyst carrier with the run-through macropores and mesopores. The invention also provides a method for preparing a catalyst by further supporting active ingredients by the catalyst carrier and the carrier and the catalyst which are prepared by the method. By the method, the run-through performance of a mesoporous channel of the carrier is improved greatly by adding the solid cellosilk; and the run-through macropore formed by the cellosilk provides a quickly-dispersed channel for reaction molecules, so the mass transfer resistance in the catalytic reaction process is reduced. The method is suitable for preparing various catalysts of which the reaction speed is controlled by internal diffusion, such as a petroleum distillate (particularly heavy oil distillate) hydrogenation catalyst.

Description

technical field [0001] The invention relates to a novel catalyst carrier with large and medium pores through it, the catalyst and their preparation method, and the preparation method is especially suitable for preparing various catalysts whose reaction speed is controlled by internal diffusion. Background technique [0002] For catalysts whose reaction speed is controlled by internal diffusion, in order to reduce the diffusion and mass transfer resistance of reactant macromolecules in the catalyst pores, so as to accommodate more carbon deposits, metal deposits, etc., the catalyst needs to contain abundant macropores; at the same time, in order to To ensure the high specific surface area required for the reaction, the catalyst also needs to have abundant mesopores. Macropores provide reaction diffusion channels, and mesopores provide reaction sites. Therefore, the performance of the connection between macropores and macropores and between macropores and mesopores will direc...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J35/10B01J23/883C10G45/02C10G45/60C10G47/12C10G11/04
Inventor 陈胜利冯军伟袁桂梅纪志勇
Owner UNISIZE TECH CHANGZHOU
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