Catalyst for preparing dialkyl carbonate, preparation method and application thereof
The invention adopts a homogeneous catalytic reaction to prepare dialkyl carbonate by combining an ionic liquid main catalyst and a co-catalyst, thereby solving the problems of active component loss and low selectivity in the prior art and realizing efficient and low-cost production of dialkyl carbonate.
Patent Information
- Application Number
- CN202210754149.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-06-28
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2042-06-28
AI Technical Summary
Existing dimethyl carbonate synthesis methods have problems such as loss of active components, low selectivity, high cost and unstable raw materials, making it difficult to efficiently prepare dialkyl carbonate.
The invention adopts a combination of ionic liquid main catalyst and co-catalyst to prepare dialkyl carbonate through homogeneous catalytic reaction. Dialkyl oxalate is used as raw material, and a decarbonylation reaction is carried out under specific conditions to generate dialkyl carbonate. The product is separated by a distillation tower.
The selectivity of dialkyl carbonate and the service life of the catalyst are improved, side reactions are reduced, the problem of loss of active components of traditional catalysts is solved, and production costs are reduced.