Method for modifying molecular sieve and modified molecular sieve
Compound I was reacted with diethylaluminum chloride to generate compound II, which was then self-assembled with o-carboxyphenylacetic acid to form an MOF material that was combined with SSZ-13 molecular sieve. This solved the problem of poor adsorption effect of powdered molecular sieves at high temperatures, and achieved efficient and adaptive adsorption of carbon dioxide at high temperatures.
CN118771402BActive Publication Date: 2026-07-21LUOYANG TIANPING MOLECULAR SIEVE
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LUOYANG TIANPING MOLECULAR SIEVE
- Filing Date
- 2024-07-11
- Publication Date
- 2026-07-21
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Figure CN118771402B_ABST
Abstract
The present application relates to a kind of molecular sieve modification method and modified molecular sieve, belong to molecular sieve technical field.The molecular sieve modification method includes the following steps: under nitrogen protection, compound I is dissolved in solvent, gradually adding diethylaluminum chloride is reacted, after reaction, compound II is obtained by purification;Compound II in step 1) is dissolved in ethanol, then mixed with o-carboxyphenylacetic acid, and MOF material is obtained by self-assembly reaction;Molecular sieve is added to the MOF material in step 2), dried after ultrasonic treatment, to obtain modified molecular sieve crude material, after purification, activation is carried out, and it is obtained.The modified molecular sieve has more polar groups, and the selectivity of CO2 adsorption is high.
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