(US6183539-B1)   NOVELTY - The molecular sieve adsorbent for gas purification comprises a sodium form of low-silica faujasite having a silica:alumina ratio of 1.8-2.2 with a residual content of potassium ions of less than 8% (equiv.); and a binder.    USE - For the purification of air, nitrogen, hydrogen, and natural gas streams.    ADVANTAGE - The adsorbent has improved adsorption capabilities which do not exhibit the limitations of the earlier products. It provides a high level of carbon dioxide and water vapor adsorption for gas purification. It allows the effective adsorption of carbon dioxide at ambient temperatures and low partial pressures of carbon dioxide that reduces operation and capital costs in air pre-purification and inorganic gas manufacturing. It has improved kinetics and dynamics of adsorption for Temperature Swing Adsorption processes and Pressure Swing Adsorption processes, and an aggregate of the processes. It allows gas purification units in one bed without the supplemental use of desiccants, e.g. silica gel, activated alumina, molecular sieves 3A, 4A, etc. It provides reliable and effluent technology for adsorbent preparation and manufacturing.    (EP1105213-A1)   NOVELTY - The molecular sieve adsorbent for gas purification comprises a sodium form of low-silica faujasite having a silica:alumina ratio of 1.8-2.2 with a residual content of potassium ions of less than 8% (equiv.); and a binder.    USE - For the purification of air, nitrogen, hydrogen, and natural gas streams.    ADVANTAGE - The adsorbent has improved adsorption capabilities which do not exhibit the limitations of the earlier products. It provides a high level of carbon dioxide and water vapor adsorption for gas purification. It allows the effective adsorption of carbon dioxide at ambient temperatures and low partial pressures of carbon dioxide that reduces operation and capital costs in air pre-purification and inorganic gas manufacturing. It has improved kinetics and dynamics of adsorption for Temperature Swing Adsorption processes and Pressure Swing Adsorption processes, and an aggregate of the processes. It allows gas purification units in one bed without the supplemental use of desiccants, e.g. silica gel, activated alumina, molecular sieves 3A, 4A, etc. It provides reliable and effluent technology for adsorbent preparation and manufacturing.