Disilane-Modified Mordenite Zeolites

Article abstract of DOI:10.1021/j100369a066

The effective pore size of H-mordenite zeolite can be decreased by implantation of disilyl compounds.Chemisorption of disilane at high temperature results in denser packing of the implanted entities on the external surface.This in turn enhances the pore narrowing effect.After hydrolysis-dehydration, the external surface of the disilanated zeolite can be reactivated by partial rehydration; thus a successive modification of the zeolite surface is possible.A narrowing of the pore size occurs without altering the internal pore structure or the active sites of these modified zeolites.The inert nature of the dehydrated disilanated zeolites eliminates the nonselective catalysis imposed by the active external surface of H-mordenites.This results in the formation of an efficient gas separator and a highly shape selective catalyst.