Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Free carbon containing
Patent
1991-01-03
1992-02-04
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Solid sorbent
Free carbon containing
55 74, 264 295, 423449, 502417, 502438, C01B 3100, C01B 3110, B01J 2020
Patent
active
050860330
ABSTRACT:
Carbon molecular sieves, useful in the separation of air into oxygen and nitrogen, are improved through modification of the micropores of the sieve by contact with the pyrolysis products of a carbon-containing compound in the gaseous state diluted with helium, with or without nitrogen as a part of the diluting gas. Volatile organic compounds, such as trimethylcyclohexane, are used with the diluent gas to narrow the micropore openings of a carbon molecular sieve and increase its kinetic selectivity for oxygen adsorption. Carbon dioxide and helium or argon in the diluent gas are used to open pores available to contacting gases.
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S. I. Surinona, "Formation of the Borons Structure of Carbon Molecular Sieve from Caking Coals", Khim. Teord. Tap., (Moscow) (5), 86-90, (1988).
Armor John N.
Braymer Thomas A.
Farris Thomas S.
Gaffney Thomas R.
Air Products and Chemicals Inc.
Konopka Paul E.
Marsh William F.
Rodgers Mark L.
Simmons James C.
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