Nanosorbents for selective removal of odours

Y type zeolites modified with Cu, Ni, Mn as well as mesoporous hexagonally ordered silicates and niobosilicates of MCM-41 type with gold dispersed as an active component were studied in odour adsorption. Dibutyl sulfide and butyl amine were used as odour components and they were adsorbed separately and in the presence of high moisture content. The attractiveness of Au/MCM-41 samples for the selective adsorption of both odour compounds (much higher for the sulfide) and their possible further oxidation during the recovery of sorbents has been proved. The highest resistance for moisture adsorption was found for Au/NbMCM-41.