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Preparation method of porous pollucite profile

A cesium zeolite and profile technology, which is applied in the field of preparation of functional material profiles, can solve the problems of product structure and performance changes, difficulty, complex preparation process, etc., and achieve the effect of good performance, simple equipment and process, and mild preparation conditions

Active Publication Date: 2019-04-26
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention aims to overcome the problems in the existing traditional porous zeolite profile preparation technology that the zeolite powder needs to be synthesized first, and then formed into pores by physical or chemical treatment means, resulting in changes in product structure and performance, complicated and difficult preparation process, and provides A low-temperature preparation method for porous cesium zeolite profiles that does not need to prepare zeolite powder in advance, does not require physical or chemical post-processing to form pores, low temperature, simple process and equipment, simple process, and mild conditions

Method used

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Examples

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Effect test

Embodiment 1

[0027] A preparation method of a porous cesium zeolite profile, the steps are: according to the weight ratio of 100 parts by weight of metakaolin, 75 parts by weight of amorphous spherical silica ultrafine powder, and 145 parts by weight of cesium hydroxide monohydrate Kaolin, amorphous spherical silicon dioxide superfine powder and cesium hydroxide monohydrate, mixed uniformly; water is taken according to 20% of the total weight of solid raw material metakaolin, amorphous spherical silicon dioxide superfine powder and cesium hydroxide monohydrate , added to the solid raw material, stirred evenly to obtain a slurry; inject the slurry into a steel mold, seal it at room temperature, place it in a blast drying oven at 50-100°C for 24 hours, and then demould to obtain a solid profile; Put it in an autoclaved reaction kettle, and after hydrothermal reaction in a water vapor environment at a temperature of 180°C for 20 hours, take it out and dry it in a blast drying oven at 105°C for...

Embodiment 2

[0029] A preparation method of a porous cesium zeolite profile, the steps are: according to the weight ratio of 100 parts by weight of metakaolin, 110 parts by weight of amorphous spherical silica ultrafine powder, and 145 parts by weight of cesium hydroxide monohydrate Kaolin, amorphous spherical silicon dioxide superfine powder and cesium hydroxide monohydrate, mixed uniformly; water is taken according to 20% of the total weight of solid raw material metakaolin, amorphous spherical silicon dioxide superfine powder and cesium hydroxide monohydrate , added to the solid raw material, stirred evenly to obtain a slurry; inject the slurry into a steel mold, seal it at room temperature, place it in a blast drying oven at 50-100°C for 24 hours, and then demould to obtain a solid profile; Put it in an autoclaved reaction kettle, and after hydrothermal reaction in a water vapor environment at a temperature of 180°C for 20 hours, take it out and dry it in a blast drying oven at 105°C fo...

Embodiment 3

[0031]A preparation method of a porous cesium zeolite profile, the steps are: according to the weight ratio of 100 parts by weight of metakaolin, 155 parts by weight of amorphous spherical silica ultrafine powder, and 145 parts by weight of cesium hydroxide monohydrate Kaolin, amorphous spherical silicon dioxide superfine powder and cesium hydroxide monohydrate, mixed uniformly; water is taken according to 20% of the total weight of solid raw material metakaolin, amorphous spherical silicon dioxide superfine powder and cesium hydroxide monohydrate , added to the solid raw material, stirred evenly to obtain a slurry; inject the slurry into a steel mold, seal it at room temperature, place it in a blast drying oven at 50-100°C for 24 hours, and then demould to obtain a solid profile; Put it in an autoclaved reaction kettle, and after hydrothermal reaction in a water vapor environment at a temperature of 180°C for 20 hours, take it out and dry it in a blast drying oven at 105°C for...

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Abstract

The invention discloses a preparation method of a porous pollucite profile. The preparation method is characterized by comprising the following steps: taking and mixing 100 weight parts of metakaolin,75-210 weight parts of an amorphous form spherical silicon dioxide ultrafine powder, 145 weight parts of cesium hydroxide monohydrate at the weight ratio; taking and adding water of which the weightis 20% of the total weight of the metakaolin, the amorphous form spherical silicon dioxide ultrafine powder and the cesium hydroxide monohydrate, and stirring evenly to obtain a slurry; injecting theslurry into a steel mold, sealing, processing in an air dry oven of 50-100 DEG C for 24 hours, then demolding to obtain a solid profile; putting the solid profile in an autoclaving reaction kettle, hydrothermally reacting in a water vapor environment of 160-220 DEG C for 12-24 hours, taking out the solid profile and drying to obtain the porous pollucite profile. By adopting the preparation method,the porous pollucite profile having the advantages of excellent mechanical property and high porosity is directly obtained, and the porous pollucite profile can be used as a catalytic reactor, a high-temperature resistant catalyst carrier and a high-temperature resistant thermal insulating layer in the fields like chemical engineering and environments.

Description

technical field [0001] The invention belongs to the preparation of functional material profiles, and relates to a preparation method of porous cesium zeolite profiles. The porous cesium zeolite profile prepared by the invention has excellent mechanical properties and high porosity, can be used as a catalytic reactor, a high-temperature-resistant catalyst carrier, a high-temperature-resistant heat insulation layer, and can be applied to fields such as chemical industry and environment. Background technique [0002] The theoretical chemical structure of cesium zeolite is CsAlSi 2 o 6 ·nH 2 O, is analcime (NaAlSi 2 o 6 ·H 2 O) A member of the family. The structure of cesium zeolite is similar to that of analcime, composed of (Al,Si)O which share bridge oxygen 4 The framework of the tetrahedral network structure is composed of alkali metal ions distributed in parallel channels in the <111> direction. Cesium zeolite has high Cs content, excellent hydrothermal stabil...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B40/02C04B111/40
CPCC04B28/001C04B2111/0081C04B2111/40C04B2201/20C04B2201/50C04B14/062C04B22/06C04B40/0263C04B40/0245
Inventor 李军侯莉卢忠远
Owner SOUTHWEAT UNIV OF SCI & TECH
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