The low-temperature luminescence spectra of samples obtained after adsorption of naphthalene by metal-substituted type X zeolites are examined. In zeolites of the first group (LiNaX, NaX, KNaX, RbNaX, CsNaX, MgNaX, CaNaX, ZnNaX, SrNaX, and BaNaX), the luminescence spectra of all the systems studied are largely the same. In the analysis of these spectra, naphthalene molecules which are physically sorbed and those bound by donor-acceptor interaction are distinguished. In forming the adsorbed charge-transfer complex (CTC), the naphthalene molecules behave as electron donors. The elements of the zeolite lattice serve as the acceptors. With zeolites of the first group, oxidation of the anphthalene, occurring in the adsorbed phase on contact with air, is observed spectroscopically. In constrast, zeolites of the second group (CoNaX, NiNaX, CuNaX, AgNaX, and CdNaX) are characterized by individual spectra due to the formation of a CTC between the naphthalene molecule and the metal present in the lattice. None of the five systems displayed oxidation of the naphthalene on contact with air.

The acidity of 20 samples of type Y zeolites with various degrees of replacement of Na ions by Ca, Sr, and Ba cations was investigated. With increasing degree of replacement of Na by Ca and Sr cations, the acidity of type Y zeolites increases nonuniformly. A substantial increase in the acidity is observed after a 45–50% degree of exchange. The Ba-forms of zeolite showed comparatively low acidity.

In. the reactions of dehydration of pentanol-1 and isomerization of pentene-1, the catalytic activity of zeolites with divalent cations (zinc and magnesium) is higher than that with univalent cations (sodium). Zinc forms of zeolite are more active than magnesium forms.

The vapor-phase conversion of cyclohexene under mild conditions (90–140°) was studied.

A method of regulation of the porous structure of polysiloxane hydride xerogels was described. Samples of polysiloxane hydride xerogels with various porous structures were obtained.