HEAT OF EXCHANGE BETWEEN GASEOUS IONS AND IONS IN ANHYDROUS ZEOLITES

From heats of ion exchange of hydrated zeolites with aqueous solutions of ions, heats of immersion of dehydrated zeolites, and heats of hydration of gaseous ions, it has been possible to obtain heats of ion exchange between a gaseous ion and a second ion in an anhydrous zeolite for zeolites X, Y, A and chabazite. These heats are considerable, and their significance has been discussed in relation to several aspects of zeolite chemistry, including solvation energies of gaseous ions in some anhydrous and hydrated zeolites. © 1969.