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Catalyst carbide carrier and its preparation method, regular catalyst and its preparation method

A photocatalyst and carbonization technology, applied in catalyst activation/preparation, catalyst carrier, chemical instruments and methods, etc., can solve the problem of excessive reduction of catalyst activity and surface area, hindering the practical application of photocatalytic technology, industrialized photocatalytic system development, adsorption Problems such as excessive loss of agent surface area

Inactive Publication Date: 2006-09-27
INNER MONGOLIA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, this fixation method has problems such as: excessive loss of the surface area of ​​the adsorbent, excessive reduction in the activity and surface area of ​​the catalyst, insufficient adhesion and fixation, and long-term ultraviolet light irradiation causes the carrier particles to decompose from the support. Problems such as shedding on the surface have hindered the practicalization and industrialization of photocatalytic technology and the development of large-scale photocatalytic systems.

Method used

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  • Catalyst carbide carrier and its preparation method, regular catalyst and its preparation method
  • Catalyst carbide carrier and its preparation method, regular catalyst and its preparation method
  • Catalyst carbide carrier and its preparation method, regular catalyst and its preparation method

Examples

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Embodiment 11

[0068] Example 1.1: A carbonized carrier of a catalyst, the precursor of the carrier is selected from thermoplastic phenolic resin, the curing agent is hexamethylene tetraammonium, and the support is selected as a rectangular plane mesh and rectangular corrugated plate with a high temperature resistance temperature greater than 1000 ° C Three-dimensional mesh 8 mesh iron wire mesh. 15% by mass of curing agent hexamethylenetetramine is mixed into the thermoplastic phenolic resin, and the mixture is uniform. The resin is evenly coated on the iron wire mesh, and the coating thickness is subject to the mesh hole not being blocked. The uniformly coated parts are successively subjected to curing process, carbonization process and activation process to obtain a regular mesh porous carbide carrier directly prepared on the iron wire mesh. The mesoporosity of the regular carbide carrier is 12%. Wherein the precursor can also be any one of thermosetting phenolic resin, amino resin, epox...

Embodiment 12

[0069] Embodiment 1.2: the preparation method of the carbonized carrier of the catalyst of embodiment 1.1, including:

[0070] (1) First, select a rectangular plane mesh and a rectangular corrugated plate three-dimensional mesh iron wire mesh with a high temperature resistance temperature greater than 1000 ° C, wash the wire mesh, and dry it for later use;

[0071] (2), select thermoplastic phenolic resin, mix the curing agent hexamethylenetetramine with a mass percentage of 15%, adjust the viscosity with acetone, until the thermoplastic phenolic resin mixed with the curing agent can be easily coated on the wire mesh Can;

[0072] (3), the thermoplastic phenolic resin prepared in (2) is evenly coated on the metal wire mesh for drying and standby, and do not block the mesh during coating;

[0073] (4), curing process: put the metal wire mesh coated with thermoplastic phenolic resin into the oven, uniformly heat up to 90 ° C, and maintain a constant temperature for 1 hour, so t...

Embodiment 13

[0085] Example 1.3: Preparation of regular photocatalyst by using the reticulated porous carbide supports obtained in Example 1.1 and Example 1.2, which is to support the titanium dioxide with photocatalytic activity on the above-mentioned rectangular planar mesh or rectangular corrugated plate-shaped three-dimensional mesh. On the porous carbide support, they are combined into a regular whole to obtain a single regular network photocatalyst: such as figure 1 , one is a single regular photocatalyst with a rectangular planar network, such as figure 2 , and the other is a single regular photocatalyst with a rectangular corrugated plate-shaped three-dimensional network. The substance with photocatalytic activity can also be any one or a mixture of two or more of tungsten trioxide, antimony trioxide, zirconium dioxide, magnesium oxide, and zinc oxide.

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Abstract

The present invention discloses regular netted porous carbide carrier suitable for catalyst and its preparation process as well as the regular photocatalyst supported with the carrier and its preparation process. The carbide carrier may be prepared directly on the supporter and has firm adhesion, high mechanical strength and high adsorption performance. The carrier is secondarily supported through coating in easy control of the carrier carbon layer thickness, and the carbonization and activation has specific surface area and pore structure of the carbide carrier capable of being regulated in a wide range, so as to prepare carrier suitable for different catalysts. The carbide carrier supported regular photocatalyst has integrated adsorption and reaction performance, possesses high light flux and low pressure drop, and may be used in the treatment of gaseous and liquid pollutant easily.

Description

technical field [0001] The invention relates to a catalyst carbonized carrier and a preparation method thereof, in particular to a regular network porous carbonized support suitable for catalysts and a preparation method thereof, as well as a regularized photocatalyst obtained by supporting a photocatalyst on the carrier and its preparation method. Background technique [0002] The catalyst is the core of catalytic technology, and the carrier is an important part of the catalyst. The type and nature of the carrier often have a great influence on the performance of the catalyst. [0003] The catalyst carrier has many functions: firstly, the carrier can improve the dispersion of the active components of the catalyst, and maintain its stability, so that the reaction has a high efficiency; secondly, the carrier can give the catalyst a certain shape and size, and make the catalyst It has a certain mechanical strength, which is easy to use and recover, making it meet the requirem...

Claims

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Application Information

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IPC IPC(8): B01J27/22B01J32/00B01J37/14B01J35/02B01J21/06B01J21/10B01J23/06B01J23/16
Inventor 张前程刘聚明简丽马惠言汪万强刘全生牟占军
Owner INNER MONGOLIA UNIV OF TECH
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