Abstract: The subject invention relates to a process for the selective separation of at least one component of a gaseous feedstream comprising passing the feedstream containing the component through a separation unit, the separation unit containing a porous membrane having a feed side and a permeate side, and a pore size of from about 10 Angstroms to about 200 Angstroms, and having disposed in the pores of the porous membrane a facilitator liquid comprising a carrier dissolved in a suitable solvent, including:a) dissolving the component in the facilitator liquid on the feed side of the porous membrane at the feed gas/membrane interface;b) forming a component-carrier complex;c) diffusing the complex to the permeate side of the porous membrane; andd) releasing the component from the carrier.

Abstract: A yttrium-silicate molecular sieve is disclosed which comprises a complex represented in terms of mole ratios of oxides as follows:aA.sub.2 O:Y.sub.2 O.sub.3 :bSiO.sub.2 :cH.sub.2 Owherein A is an alkali metal; a is a number ranging from about 0.5 to about 20; b is a number ranging from about 2 to about 400; and c is a number ranging from about 1 to about 500.

Abstract: Crystalline Group IIIB metallophosphates are provided herein having a composition in terms of mole ratios of oxides in the synthesized state of:X(M'.sub.2 O):Y(M.sub.2 O.sub.3):Z(P.sub.2 O.sub.5):nH.sub.2 O (I)whereinM' is an alkali metal;M is a Group IIB metal;x/y is a number from about 1.1 to about 1.9;z/y is a number from about 1 to about 1.9n/y is a number from about 0 to about 8.Also provided is the use of these metallophosphates as ion exchange materials.