The Boc Group, Inc.

Chang Jie Guo

Frank R Fitch

Arthur I Shirley

Dongmin Shen

Martin Bulow

Martin B&uuml;low

Virginia A Malik

Silvia Beatriz Dougill

Alberto I La Cava

Jonathan Paul Brooks

Ethene is separated from a gas mixture containing ethane by a pressure swing adsorption process carried out at a temperature in the range of about 50 to about 200&deg; C., wherein the adsorption step of the process is conducted by passing the gas mixture through an adsorption zone containing type A zeolite whose exchangeable cations are preferably made up of at least about 60 but not more than 75% sodium ions and more than 25 and up to about 40 percent potassium ions.

Separation of alkenes and alkanes

Carbon dioxide is separated from gaseous hydrocarbons by a cyclic adsorption process using at a temperature in the range of about -50 to about 200.degree. C., wherein the adsorption step of the process is conducted by passing the gas mixture through an adsorption zone containing carbon molecular sieve or type A zeolite whose exchangeable cations are made up of about 50 to about 90% sodium ions and about 10 to about 50 percent potassium ions.

Separation of carbon dioxide and hydrocarbons

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Bridgewater, NJ, United States of America

Chang Jie Guo