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Foamed ceramic for catalyst carriers and preparation and application methods thereof

A technology of catalyst carrier and foam ceramics, which is applied in the direction of catalyst carrier, catalyst activation/preparation, ceramic products, etc., and can solve the problems of low porosity and small specific surface area

Inactive Publication Date: 2019-04-23
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, one drawback of current catalyst supports is the small specific surface area and low porosity

Method used

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  • Foamed ceramic for catalyst carriers and preparation and application methods thereof
  • Foamed ceramic for catalyst carriers and preparation and application methods thereof
  • Foamed ceramic for catalyst carriers and preparation and application methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The embodiment of the present invention provides the preparation of 40PPI alumina foam ceramics loaded nickel-iron-copper flake catalyst, the specific steps are as follows:

[0054] (1) Cut the 40PPI polyurethane foam into the cuboid shape required for the experiment with a resistance wire cutting machine, and put it in an oven to dry at 80°C for 4 hours;

[0055] (2) At the same time, weigh 300g of alumina powder containing sintering aid and add 90g of deionized water to mix, then add 0.2g of carboxymethyl cellulose and 20g of PIMA microspheres, and ball mill for 4 hours to obtain a fully mixed slurry. The slurry was sieved to obtain the first pre-ceramic slurry, and 100 g of the first pre-ceramic slurry was weighed and 0.5 g of binder (PVA) was added and stirred evenly to obtain the first slurry-coated ceramic slurry. Dip the dried polyurethane foam into the ceramic slurry for the first paste, use a roller press to remove excess slurry on the polyurethane foam, and re...

Embodiment 2

[0062] The embodiment of the present invention provides the preparation of 60PPI alumina foam ceramics loaded nickel-iron-copper flake catalyst, the specific steps are as follows:

[0063] (1) Cut the 60PPI polyurethane foam into cylinders required by the experiment with a resistance wire cutting machine, and put them in an oven to dry at 80°C for 4 hours;

[0064] (2) At the same time, weigh 400g of alumina powder containing sintering aids and add 120g of deionized water to mix, then add 0.3g of carboxymethyl cellulose and 30g of PIMA microspheres, and ball mill for 4 hours to obtain a fully mixed slurry. The slurry was sieved to obtain the first pre-ceramic slurry, and 100 g of the first pre-ceramic slurry was weighed and 0.5 g of binder (PVA) was added and stirred evenly to obtain the first slurry-coated ceramic slurry. Take out the dried polyurethane foam and dip it in the ceramic slurry for the first coating, use a roller press to remove excess slurry on the polyurethane ...

Embodiment 3

[0070] The embodiment of the present invention provides the preparation of 30PPI silicon carbide foam ceramics supported nickel-iron-copper flake catalyst, the specific steps are as follows:

[0071] (1) Cut the 30PPI polyurethane foam into the cuboid shape required for the experiment with a resistance wire cutting machine, and put it in an oven to dry at 80°C for 4 hours;

[0072] (2) Simultaneously weigh 400g of silicon carbide powder containing sintering aids and add 120g of deionized water to mix, then add 0.1g of carboxymethyl cellulose and 20g of PIMA microspheres, and ball mill for 4 hours to obtain a fully mixed slurry. The slurry was sieved to obtain the first pre-ceramic slurry, and 100 g of the first pre-ceramic slurry was weighed and 0.5 g of binder (PVA) was added and stirred evenly to obtain the first slurry-coated ceramic slurry. Take out the dried polyurethane foam and dip it in a small amount of ceramic slurry for the first paste, use a roller press to remove ...

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Abstract

The invention belongs to the technical field of catalyst carriers and particularly relates to a foamed ceramic for catalyst carriers and preparation and application methods thereof. The preparation method of the foamed ceramic comprises the following steps of, firstly, preparing primary suspension ceramic slurry and secondary suspension ceramic slurry; secondly, dipping polyurethane foam in the primary suspension ceramic slurry, and performing drying, curing and cooling to obtain primary slurry suspended foam; thirdly, applying the secondary suspension ceramic slurry onto the primary slurry suspended foam, and performing drying and cooling treatment to obtain secondary slurry suspended foam; fourthly, sintering the secondary slurry suspended foam at 600-700 DEG C and then at 1400-1600 DEGC to obtain the foamed ceramic for the catalyst carriers. The prepared foamed ceramic for the catalyst carriers solves the technical defects of small specific surface area and low porosity of catalystcarriers in the prior art.

Description

technical field [0001] The invention belongs to the technical field of catalyst carriers, and in particular relates to a foamed ceramic used for catalyst carriers and its preparation method and application. Background technique [0002] Catalyst carrier, also known as support, is one of the components of the supported catalyst, and is the skeleton of the active component of the catalyst, supporting the active component to disperse the active component, and at the same time increasing the strength of the catalyst. Most carriers are products in the catalyst industry, and there are many types of catalyst carriers, including metal oxide carriers, molecular sieve carriers and other carriers. [0003] Catalyst supports that have been studied more at home and abroad include: SiO 2 , Al 2 o 3 , glass fiber net (cloth), hollow ceramic ball, sea sand, layered graphite, hollow glass bead, quartz glass tube (sheet), ordinary (conductive) glass sheet, plexiglass, optical fiber, natura...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/565C04B35/622C04B38/06C04B38/02B01J32/00B01J37/10B01J35/04B01J37/18B01J37/08B01J23/755
CPCC04B35/10C04B35/565C04B35/622C04B38/02C04B38/0615C04B38/067B01J23/755B01J37/0018B01J37/082B01J37/10B01J37/18C04B2235/6567C04B2235/6562C04B2235/9669C04B2235/9607C04B2235/96B01J35/56C04B38/0074
Inventor 陈瑜梁浩孟文彬梁波
Owner GUANGDONG UNIV OF TECH
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