Molecular Sieve 5A is an alkali alumino silicate; it is the calcium form of the Type A crystal structure. Type 5A has an effective pore opening of 5 angstroms (0.5 nm). It will adsorb molecules with a kinetic diameter of less than 5 Angstrom and exclude those larger. It is especially suitable for PSA adsorber applications where it may be used for the separation of normal- and iso- paraffins (C4 to C6 species), in PSA hydrogen purification and in oxygen concentrators.
Equilibrium Water Capacity @ 25°C
n Normal and Isoparaffin separation
n Natural Gas Drying
n Removal of H2S, CO2, and Mercaptans from Natural Gas
n Inert Gas Purification
n H2 Purification
n PSA Oxygen Purification
n Solvent Drying
n Separation of Aromatics
RP molecular sieve Type 5A can be regenerated by either heating in the case of thermal swing processes; or by lowering the pressure in the case of pressure swing processes. To remove moisture from a 5A molecular sieve, a temperature of 250-300°C is required. A properly regenerated molecular sieve can give moisture dew points below -100°C, or mercaptan or CO2 levels below 2 ppmv. The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process.
HANDLING & STORAGE RECOMMENDATIONS
Store RP molecular sieve in a dry location to prevent premature water adsorption. Reseal packages after opening to prevent contamination and unintended water adsorption. We recommend that you rotate stock so oldest material is used first.
To avoid damp and pre-adsorption of organic before running, or must to be reactivated.