A method for preparing an aqueous hydroxylamine solution by bipolar membrane electrodialysis
By electrolyzing hydroxylamine salt and high-purity water in a bipolar membrane electrodialysis reactor, and through the modification technology of bipolar membrane, the metal ion adsorption capacity is improved, and the problems of low production efficiency, high energy consumption and poor product quality in the prior art are solved, thereby achieving high-efficiency and low-cost preparation of hydroxylamine aqueous solution.
Patent Information
- Application Number
- CN202411545745.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2044-11-01
AI Technical Summary
When preparing aqueous hydroxylamine solution, the prior art has poor continuous production capacity, low production efficiency, high energy consumption, poor product quality, and the metal ion concentration cannot meet the requirements of the electronics industry, which limits the application.
Bipolar membrane electrodialysis technology is used to obtain an aqueous hydroxylamine solution by adding hydroxylamine salt, high purity water and sodium salt to the bipolar membrane electrodialysis reactor and performing electrolysis under external electric field drive. The bipolar membrane increases the surface boric acid group and triphenylphosphine functional groups through electron beam radiation and chemical modification, and improves the adsorption and complexing capabilities of metal ions.
It significantly reduces the content of metal ions in the aqueous hydroxylamine solution, improves atomic economy, reduces production costs, reduces "three wastes" emissions, and the product quality meets the requirements of the electronics industry.