Council of Scientific and Industrial Research, India (1993) An improved process for preparation of chromium dioxide. 882/DEL/87.
Full text not available from this repository.Abstract
The process comprises charging a container containing chromium trioxide, water, alkali metal salts or ammonium salts, and a modifier into an autoclave at 500xB0;C, passing oxygen gas into the autoclave to generate an initial pressure of 8-12 MPa, heating the autoclave to 300-450xB0; C and 500-800 bars, maintaining the autoclave at maximum temperature for 1-4 hours, cooling to room temperature, removing CrO2 formed, washing, drying, and grinding into a free flowing powder. The modifier used is antimany trioxide and 1.3 wt% of CrO3.
| Item Type: | Patent |
|---|---|
| Subjects: | CHEMISTRY AND MATERIALS > Chemistry and Materials (General) |
| Division/Department: | Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division |
| Depositing User: | Mr Vijaianand SK |
| Date Deposited: | 31 Jan 2005 |
| Last Modified: | 24 May 2010 09:39 |
| URI: | http://nal-ir.nal.res.in/id/eprint/655 |
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