PSG INSTITUTE OF TECHNOLOGY AND APPLIED RESEARCH (2022) A FACILE PROCESS ROUTE FOR THE PRODUCTION OF ACTIVE ZINC OXIDE. 397986.
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A FACILE PROCESS ROUTE FOR THE PRODUCTION OF ACTIVE ZINC OXIDE.pdf - Published Version
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Abstract
Production of active zinc oxide using zinc chloride obtained from industrial zinc scrap precursor was synthesized through wet chemical process route developed suitable for high performance industrial applications. In the present zinc chloride is converted into basic zinc carbonate using the combination of sodium hydroxide and sodium carbonate in alkaline condition at appropriate experimental conditions. The process route developed for the present invention for the production of active zinc oxide from zinc chloride through a facile environmentally friendly method. Among the process routes developed in the present invention, active zinc oxide synthesized from zinc chloride precursor using the combination of sodium hydroxide and sodium carbonate yielded better set of properties. The optimum pH and temperature for the precipitation of basic zinc carbonate are 7.5 and 65°C respectively. The preferred calcined temperature range for basic zinc carbonate is 230-260°C. The yield and assay of the active zinc oxide samples obtained are 90% and 98% respectively. The properties of active zinc oxide viz., bulk density, surface area, pore size and particle size obtained are 0.595 g/cnv5, 60 g/rrf, 20 nm and 20-100nm respectively.
Item Type: | Patent |
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Subjects: | F Mechanical Engineering > Waste Recycling and Waste Utilization G Chemistry > Metal complexes. Layered double hydroxides G Chemistry > Processes,operations and techniques |
Divisions: | Chemistry |
Depositing User: | Dr Krishnamurthy V |
Date Deposited: | 22 Jan 2025 05:15 |
Last Modified: | 22 Jan 2025 05:16 |
URI: | https://ir.psgitech.ac.in/id/eprint/1342 |