Abstract: Process for preparing carbon containing molecular sieves adapted for separating small molecular gases in particular oxygen from nitrogen which comprises treating coke having a content of volatile components of up to 5% at 600.degree.-900.degree.C with a hydrocarbon splitting off carbon whereby the split-off carbon is deposited in the carbon framework of the coke under narrowing of the existing pores.
Type:
Grant
Filed:
February 21, 1974
Date of Patent:
September 7, 1976
Assignee:
Bergwerksverband GmbH
Inventors:
Heinrich Munzner, Heinrich Heimbach, Werner Korbacher, Werner Peters, Harald Juntgen, Karl Knoblauch, Dieter Zundorf