Palladium-Copper Catalyst Supported on Carbon Fiber Material for Oxidation of Carbon Monoxide by Air Oxygen

Abstract

The phase composition, textural, protolytic properties, and activity of catalysts for the carbon monoxide low-temperature oxidation based on two series of non-woven carbon fiber material samples CFM-I and CFM-II, and K2PdCl4, Cu(NO3)2, KBr basic components were studied in this work. Catalysts and CFMs were studied by XRD, SEM, FTIR spectroscopy, nitrogen ad/desorption, pH-metric, and atomic absorption spectrophotometry methods. It has been found that the basic components K2PdCl4 and Cu(NO3)2 deposited on a microporous carbon surface undergo changes and form an X-ray amorphous Pd0 phase and a paratacamite – Cu2(OH)3Cl crystalline phase. The catalysts were tested in the range of carbon monoxide initial concentrations from 50 to 300 mg/m3 with an effective contact time of the catalyst with the gas-air mixture from 0.12 to 0.50 s. Catalysts provide air purification from CO to concentrations below MPCCO (20 mg/m3) and can be used in respiratory devices.