 Johnson Matthey, Hatton Garden, London. |
The Manufacture of Nitric Acid
THE ROLE OF PLATINUM ALLOY GAUZES IN THE AMMONIA OXIDATION PROCESS
Platinum Metals Review
Article Synopsis
Nitric acid production by the oxidation of ammonia on platinum gauzes constitutes one of the world's major chemical industries. In this article the author outlines some of the principal features of this process, and describes in some detail the chemical reaction taking place at the platinum surface. He also discusses the changes that occur in the gauze leading to metal loss during operation. Handling and repairing the gauzes on a plant site and platinum dust recovery by filters are among other aspects of interest to plant operators with which the author deals.