New molecularly modified noble metal catalysts for gas phase hydrogenation reactions

Abstract

A new approach for the molecularly modified promotion of noble metal catalysts (Pt, Pd, Au) for the hydrogenation of different compounds in the gas phase is described. After premodification of the catalysts in solution, using several amines, the degree of modification has been measured using UV-spectroscopy and temperature programmed oxidation (TPO). Most modified catalysts showed changes in catalyst activity and product selectivity. Furthermore, they gave sustained long term stability with time on line. These two factors together represent a sound basis on which to identify future applications of this new type of catalyst.