Effect of noble metal deposition in zeolitic structures on their adsorption capacities

Experimental determination of Henry constants and adsorption heat for various VOCs on faujasite type zeolites (NaY, HY and CsY with a Si/Al ratio of 2.4) and their Palladium impregnated form were achieved by a pulse chromatographic technique from 448 to 623K for seven alkanes (linear, branched and cyclic probes) and from 523 to 673K for three aromatic compounds (toluene, m-xylene and chlorobenzene). The Henry constant increases with the cation size and decreases if the zeolite is impregnated.