PLATINUM CAPTURE BY OXIDE SORBENTS IN THE PROCESS OF HIGHTEMPERATURE CATALYTIC OXIDATION OF AMMONIA: MODERNPHYSICO-CHEMICAL APPROACHES AND RESOURCE-SAVINGTECHNOLOGIES

Abstract

The paper investigates the physico-chemical regularities of platinum
capture by oxide sorbents in the process of high-temperature ammonia oxidation. The formation of the non-stoichiometric compound CaₓPt₃O₄ has been established. The possibility of effective return of platinum to the technological cycle is demonstrated. Recommendations for optimizing the composition of sorbents and their operating conditions have been developed.