A method for preparing 5-nitrobenzimidazolone by continuous nitration
By modifying the sulfonic acid group on the Ni-resin material and combining the tubular reactor-microchannel reactor joint system, the problems of low purity and insufficient safety in the continuous nitrification process of 5-nitrobenzimidazolone in the prior art are solved, and the continuous preparation effect of high purity and safe and stable is achieved.
CN119528815BActive Publication Date: 2025-03-28DONGYING TIANZHENG CHEM
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Patent Information
- Application Number
- CN202510096304.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2045-01-22
AI Technical Summary
Technical Problem
In the prior art, the continuous nitration process products of 5-nitrobenzimidazolone have low purity and insufficient safety factor, making it difficult to effectively control the reaction process.
Method used
The sulfonic acid group-modified Ni-resin material is used as a catalyst and combined with the microchannel reactor combined system of tubular reactor-multireactivity module to achieve continuous preparation of 5-nitrobenzimidazolone.
Benefits of technology
It significantly improves the purity of the product, reduces the generation of by-products, improves the safety and stability of the reaction process, and has significant industrial value.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention belongs to the field of chemical product preparation technology, and specifically relates to a method for preparing 5-nitrobenzimidazolone by continuous nitration. The method uses a Ni-resin material modified with a sulfonic acid group as a catalyst, and combines a microchannel reactor combined system of a tubular reactor-multi-reaction module to efficiently achieve the continuous preparation of 5-nitrobenzimidazolone. The method can obtain a high-purity product, and the reaction process is safe and stable, which has significant value in industrial production.
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