Improved process for preparation of chromium dioxide.

Council of Scientific and Industrial Research, India (1994) Improved process for preparation of chromium dioxide. 627/DEL/87.

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Abstract

An improved process for the preparation of chromium dioxide (CrO2) comprises placing a quartz or stainless steel container closed at the end and containing chromium trioxide, water, and a modifier, e.g., Sb2O3, into an autoclave, feeding oxygen gas into the autoclave to generate an initial pressure of 8-12 MPa, heating the autoclave to 300-450xB0;C, maintaining the autoclave at the maximum temperature for 1-6 hours, cooling to room temperature, and removing CrO2 formed, followed by washing and drying in air at 100xB0; C.

Item Type: Patent
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division, Materials Science Division
Depositing User: Mr Vijaianand SK
Date Deposited: 16 Oct 2008
Last Modified: 24 May 2010 09:39
URI: http://nal-ir.nal.res.in/id/eprint/650

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