A method for preparing metal oxide powder with controllable morphology by an automatic pressure relief process
By carrying out hydrothermal reaction and high-temperature calcination in a pressure cooker, and combining glucose as a dispersant and morphology regulator, the problems of high equipment cost, complex operation and poor product morphology uniformity in the existing technology are solved. This achieves low-cost and environmentally friendly preparation of morphology-controllable metal oxide powders, which is suitable for the industrial production of various metal oxides.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAN UNIV OF TECH
- Filing Date
- 2026-05-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for preparing metal oxides are characterized by high equipment costs, harsh reaction conditions, complex operations, and poor product morphology uniformity, making it difficult to meet the needs of large-scale industrial production. Furthermore, traditional hydrothermal synthesis requires the addition of strong acids or bases or structure-directing agents, resulting in a heavy environmental burden.
A hydrothermal reaction was carried out in a pressure cooker with a polytetrafluoroethylene liner. Soluble metal salts, glucose, and urea were used as raw materials. The morphology of the metal oxide powder was controlled by hydrothermal reaction under mild conditions and high-temperature calcination. Strong acids, alkalis and organic solvents were avoided. Glucose was used as a dispersant and morphology regulator to achieve stable dispersion and directional growth of crystal nuclei.
It reduces equipment costs and safety risks, simplifies operation steps, reduces the difficulty of waste liquid treatment, achieves uniformity and dispersibility of metal oxide powder morphology, is suitable for the preparation of various metal oxides, and meets the requirements of green chemical production.
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Abstract
Citation Information
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