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Hydrophobic honeycomb-shaped zeolite material as well as preparation method and application thereof

A zeolite material and honeycomb technology, which is applied in the field of hydrophobic honeycomb zeolite materials and its preparation, can solve the problems of single pore size, large influence of zeolite specific surface area, and complicated hydrophobic treatment steps, so as to improve hydrophobic performance and competitive adsorption capacity , The effect of broadening the scope of application

Active Publication Date: 2018-01-16
景德镇佳奕新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the defect that the honeycomb zeolite (molecular sieve) material in the prior art has a single aperture, the hydrophobic treatment steps are complicated, and the specific surface area of ​​the zeolite is greatly affected, thereby providing a hydrophobic honeycomb zeolite ( Molecular sieve) material and its preparation method and application

Method used

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  • Hydrophobic honeycomb-shaped zeolite material as well as preparation method and application thereof
  • Hydrophobic honeycomb-shaped zeolite material as well as preparation method and application thereof
  • Hydrophobic honeycomb-shaped zeolite material as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0040] A preparation method of hydrophobic honeycomb zeolite (molecular sieve) material, comprises the following steps (carrier-free molding):

[0041] Raw material selection and proportioning: Weigh two parts of ZSM-5 molecular sieve powder, the crystallinity is above 70%, the molar ratio of silicon to aluminum is greater than 100, and the specific surface area is greater than 300m 2 / g; Weigh three parts of Y-type molecular sieve powder, whose crystallinity is above 70%, the molar ratio of silicon to aluminum is greater than 7, and the specific surface area is greater than 300m 2 / g; mix the two material powders evenly to obtain a mixed powder.

[0042] Honeycomb molding steps: based on the weight of the proportion, mix 41 parts of powder, 5 parts of CMC, 40 parts of silica sol, and about 14 parts of water, fully mix into mud, smelt into segments, pass through a honeycomb structure steel mold of a certain size, It is formed into a honeycomb blank by extrusion molding method...

Embodiment 2

[0045] A preparation method of hydrophobic honeycomb zeolite (molecular sieve) material, comprises the following steps (carrier-free molding):

[0046] Raw material selection and proportioning: Weigh three parts of ZSM-5 molecular sieve material, whose crystallinity is above 70%, the molar ratio of silicon to aluminum is greater than 100, and the specific surface area is greater than 300m 2 / g; Weigh two parts of Y-type molecular sieve materials, the crystallinity of which is above 70%, the molar ratio of silicon to aluminum is greater than 7, and the specific surface area is greater than 300m 2 / g; Mix the two materials evenly to obtain a mixed powder.

[0047] Honeycomb forming steps: based on the weight of the share, mix 47 parts of powder, 6 parts of MC, 42 parts of aluminum sol, and about 5 parts of water, fully mix into mud, smelt into segments, pass through a honeycomb structure steel mold of a certain size, It is formed into a honeycomb blank by extrusion molding meth...

Embodiment 3

[0050] A preparation method of hydrophobic honeycomb zeolite (molecular sieve) material, comprises the following steps (carrier-free molding):

[0051] Selection and proportioning of raw materials: Weigh a portion of ZSM-5 molecular sieve powder, whose crystallinity is above 70%, the molar ratio of silicon to aluminum is greater than 100, and the specific surface area is greater than 300m 2 / g; Weigh a portion of Y-type molecular sieve powder, whose crystallinity is above 70%, the molar ratio of silicon to aluminum is greater than 7, and the specific surface area is greater than 300m 2 / g; Mix the two materials evenly to obtain a mixed powder.

[0052] Honeycomb forming steps: based on the weight of the share, mix 50 parts of powder, 4 parts of animal glue, 44 parts of zirconium sol, and about 2 parts of water, fully mix into mud, smelt into segments, pass through a honeycomb structure steel mold of a certain size, It is formed into a honeycomb blank by extrusion molding meth...

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Abstract

The invention belongs to the technical field of environment protection of inorganic non-metal adsorption materials and in particular relates to a hydrophobic honeycomb-shaped zeolite material as wellas a preparation method and application thereof. The material is prepared from ZSM-5 type zeolite and Y-type zeolite, wherein the ZSM-5 type zeolite and the Y-type zeolite account for 80 percent to 84percent of the hydrophobic honeycomb-shaped zeolite material and a transformed crystal accounts for 12 percent to 18 percent of the hydrophobic honeycomb-shaped zeolite material; the mass ratio of the ZSM-5 type zeolite to the Y-type zeolite ranges from (2 to 3) to (3 to 2); the diameter range of micro-pores of the hydrophobic honeycomb-shaped zeolite material is 0.5nm to 2.0nm. According to thehydrophobic honeycomb-shaped zeolite material provided by the invention, a ZSM-5 type molecular sieve material and a Y-type molecular sieve material are selected and mixed, so that the range of a porediameter (0.5nm to 2.0nm) of the honeycomb zeolite material is expanded; basic requirements of adsorbing waste gas with different molecular sizes (0.4nm to 1.4nm) in large-air-quantity and low-concentration VOCs (Volatile Organic Compounds) are met. The hydrophobic property and the specific surface area of the honeycomb zeolite material are improved through steps of crystal transformation, waterdraining, acid washing and the like, and the hydrophobic honeycomb-shaped zeolite material is applied to the large-air-quantity and low-concentration VOCs in an RH 80 percent high-humidity air environment.

Description

technical field [0001] The invention belongs to the technical field of environmental protection of inorganic non-metallic adsorption materials, in particular to a hydrophobic honeycomb zeolite (molecular sieve) material and its preparation method and application. Background technique [0002] Volatile organic compounds (Volatile organic compounds) for short: VOCs are gaseous pollutants, volatile pollutants with a boiling point lower than 260°C and a vapor pressure lower than 70Pa. Industrial VOCs mainly come from volatile organic compound pollutants produced in various industries and transportation industries, including packaging, printing, and coating industries, such as paint making, electronic printing, ink printing, containers, automobiles, The use of volatile organic thinners in the industrial production process of the surface painting and coating industry of trains and ships produces large air volume and low concentration (hydrocarbons, ketones, alcohols, esters, alcoh...

Claims

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Application Information

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IPC IPC(8): B01J20/18B01J20/28B01J20/30B01D53/02
CPCY02A50/20
Inventor 陈大博
Owner 景德镇佳奕新材料有限公司
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