Nanometer molecular sieve, synthetic method and applications thereof

A technology of nano-molecular sieve and synthesis method, which is applied in the field of nano-molecular sieve and its synthesis, which can solve the problems of small specific surface area, large particle size, and unfriendly environment, and achieve the effect of large specific surface area, small particle size, and environmental friendliness
CN111115651AActive Publication Date: 2020-05-08CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2020-05-08

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Abstract

The invention provides a high-specific-surface-area nano zeolite molecular sieve capable of being directly synthesized without using organic amine or a seed crystal or a guiding agent, and a synthesismethod thereof. A purpose of the invention is to mainly solve the problems of small specific surface area, high cost and unfriendliness to the environment due to the fact that most of nano zeolite molecular sieves are synthesized by using organic amines in the prior art. According to the invention, inorganic ammonium or inorganic alkali is used for replacing organic amine, and the parameters in the synthesis process of the molecular sieve are optimized, so that the nano molecular sieve with the grain size of less than 200 nm is obtained, the specific surface area is 300-800 m<2> / g, and the synthesis method is good in repeatability, low in synthesis cost, simple to operate and environment-friendly, and can be applied to the industrial fields of catalysis, adsorption separation, drying purification and the like.
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Description

technical field

[0001] The invention relates to a nano molecular sieve and its synthesis method and application, in particular to a nano molecular sieve with high specific surface area and high hydrophobicity which can be directly prepared without using organic amine or seed crystal or directing agent. Background technique

[0002] At present, the grain size of zeolite molecular sieves commonly used in industry is mostly 1-5 μm. When the grain size of molecular sieves is reduced from micron to nanometer, certain physical and chemical properties of molecular sieves, such as catalytic performance, thermal stability and adsorption performance, will be affected. Both will have obvious and beneficial effects, and have shown excellent performance in the fields of catalysis, adsorption separation, purification and drying, etc. in-depth research.

[0003] Generally speaking, nano-molecular sieves are synthesized by hydrothermally treating silica-alumina gel at a certain time and te...

Claims

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