Abstract
Carbon molecular sieves are adsorbents for gas separation processes of increasing importance. A variety of carbonaceous adsorbents, activated carbons and improved carbon molecular sieves, all with different pore size distributions, can be produced, systematically, by using different steps in the manufacturing process. The two types of carbon molecular sieves, CMSN2 and CMSH2, carefully developed by Bergbau-Forschung GmbH, can be distinguished by different separation mechanisms. The procedure of manufacturing the carbon molecular sieves type CMSN2 and type CMSH2 and their application in an air separating process for nitrogen recovery and hydrogen or nobel gas recovery processes, respectively, using different feed gases, is discussed.
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