ZSM-5分子筛、其制备方法及应用
By employing two-stage crystallization processes and a pH adjuster, combined with ball milling and calcination, the problems of large size and small specific surface area of ZSM-5 molecular sieves were solved, resulting in the preparation of nanoscale ZSM-5 molecular sieves and improved catalytic performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PETROCHINA CO LTD
- Filing Date
- 2023-12-29
- Publication Date
- 2026-07-17
AI Technical Summary
The existing ZSM-5 molecular sieve has a large crystal size and small specific surface area, and does not have mesoporous characteristics, which limits its application potential in catalytic reactions.
A two-stage crystallization process was adopted, combined with the use of pH adjuster and ball milling, to regulate the nucleation rate and crystal growth rate. Through multiple crystallization and calcination processes, nanoscale ZSM-5 molecular sieves were finally obtained.
The size of ZSM-5 molecular sieve was successfully reduced, its specific surface area was increased, and its catalytic performance was enhanced, making it suitable for catalytic conversion of methanol to olefins, catalytic isomerization of aromatics and aromatic compounds, and catalytic aromatization reactions.
Smart Images
Figure CN120229740B_ABST