A kind of preparation method of molecular sieve adsorption profiles

Abstract

The invention discloses a preparation method of a molecular sieve adsorption profile material, and belongs to the technical fields of molecular sieves and preparation thereof. The molecular sieve adsorption profile material is in a honeycomb structure, and composed of a plurality of parallel channels; each channel has height of 1-30 mm and width of 2-60 mm; the molecular sieve adsorption profile material has specific surface area of 200-400 m<2> / g, and uses raw material molecular sieves including one or more of the followings in combination: MFI type, BEA type, FAU type and MOR type molecular sieves. The profile material of the invention has rich aperture distribution than the single molecular sieve, can cover most of the gas to be treated such as volatile organic compounds and odor gas, has a wide range of processing; the combination of a variety of molecular sieves and adhesion of the molecular sieves on the profile surface and in the gaps achieve different aperture distribution on the profile material.

Description

technical field [0001] The invention relates to the technical field of molecular sieves and their preparation, in particular to a method for preparing molecular sieve adsorption profiles. Background technique [0002] Adsorption materials such as activated carbon and molecular sieves have been widely used in the removal of volatile organic compounds and other purposes. Compared with traditional activated carbon materials, molecular sieves are non-flammable and safe as inorganic materials, and can handle VOC components with higher boiling points. The adsorption performance of hydrophobic molecular sieves is not sensitive to humidity, and can selectively adsorb organic waste gases. This technology applications are expanding. However, molecular sieves have a regular structure and uniform pore size, and only have a good adsorption effect on molecules with comparable pore size and polarity. However, the composition of exhaust gas is usually very complex, and the molecular size a...

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Problems solved by technology

However, molecular sieves have a regular structure and uniform pore size, and only have a good adsorption effect on molecules with comparable pore size and polarity. However, the composition of exhaust gas is usually very complex, and the molecular size and polarity of various compounds are different. Use It is difficult to achieve effective coverage of all components with a single molecular sieve

[0003] At present, molecular sieves with micropores and mesoporous hierarchical pore structures have been developed in the existing technology, which are mainly used for heavy oil catalytic cracking to realize the step-by-step cracking of long-chain macromolecular hydrocarbons. Similarly, mesopores and micropores are used Molecular sieve compounding or co-crystal is also to achieve step-by-step catalysis of macromolecules, but this method is not aimed at small organic molecules and cannot solve the above problems; The process is difficult to control precisely, the repeatability is poor, and limited by the synthesis conditions, the combination of molecular sieves that can be realized is limited, and the expected range of pore size gradient distribution cannot be well achieved.