Air Products and Chemicals, Inc.

Erin Marie Sorensen

Timothy Christopher Golden

Robert Quinn

William Jack Casteel, Jr

Garret Chi-Ho Lau

Roger Dean Whitley

Edward Landis Weist, Jr

Jeffrey Raymond Hufton

Shubhra Jyoti Bhadra

Robin Joyce Maliszewskyj

Qiao Zhao

Charles G Coe

Mohammad Ali Kalbassi

Fred William Taylor

Paul Anthony Wright

Magdalena M Lozinska

Marissa Ann Bonanno

Geoffrey John Ochs

Christopher Robert Bongo

Donn Michael Herron

David Ross Graham

Garrett Chi-Ho Lau

Elliott L Bruce

Jr Edward Landis Weist

William Jack Casteel Jr

Paula A Wright

Paul A Wright

William Jack Casteel

Edward Landis Weist

Charles Gardner Coe

An adsorbent for removing COfrom a gas mixture, the adsorbent comprising alumina and a carbonate compound where the carbonate to alumina IR absorbance intensity ratio is reduced by washing the adsorbent with water. The disclosure also describes a method of making adsorbent particles, process for removing COfrom a gas mixture using the adsorbent, and an adsorption unit using the adsorbent.

Alkali-promoted activated alumina adsorbent

Disclosed herein are novel RHO zeolites useful as kinetically selective adsorbents for oxygen and/or nitrogen. The adsorbents can be used in pressure swing adsorption processes for selectively adsorbing oxygen and/or nitrogen from feed streams such as an air stream or crude argon stream. Also disclosed are novel methods of preparing RHO zeolites, including in particular mixed-cation RHO zeolites.

RHO adsorbent compositions, methods of making and using them

Disclosed herein are new processes for adsorbing oxygen using adsorbent compositions comprising RHO zeolites kinetically selective for oxygen. The RHO zeolites can be used in pressure swing adsorption processes for separating oxygen from oxygen containing streams, such as for, but not limited to, purifying a crude argon feed stream or separating oxygen from an air feed stream.

Processes using improved RHO adsorbent compositions

An adsorbent having a composition comprising at least 90% chabazite where the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8, the chabazite includes a mixture of at least two types of cations, and each of the at least two types of cations are in a molar ratio relative to Al of at least 0.05.

Modified chabazite adsorbent compositions, methods of making and using them

Methods and systems for purifying argon from a crude argon stream are disclosed, employing pressure swing adsorption at cold temperatures from &#x2212;186&#xb0; C. to &#x2212;20&#xb0; C.; more preferably from &#x2212;150&#xb0; C. to &#x2212;50&#xb0; C.; and most preferably from &#x2212;130&#xb0; C. to &#x2212;80&#xb0; C. with oxygen-selective zeolite adsorbent. In some embodiments, the oxygen-selective zeolite adsorbent is a 4A zeolite, a chabazite, or a combination thereof.

Method for argon production via cold pressure swing adsorption

A method of separating oxygen from an oxygen-containing fluid stream is disclosed, the method including the step of contacting the oxygen-containing fluid stream with an oxygen-selective zeolite adsorbent comprising at least 90% chabazite, wherein the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8. The single phase chabazite may comprise a mixture of at least two types of cations.

Hydrogen sulfide is removed from a hydrogen rich gas stream using adsorbents having a low loss of carbon dioxide adsorption capacity upon sulfur loading including high purity silica gels, titania or highly cross-linked, non-chemically reactive resins. The adsorbents may be used to adsorb both carbon dioxide and hydrogen sulfide, or may be used as a guard bed upstream of a separate carbon dioxide adsorbent.

Gas purification by adsorption of hydrogen sulfide

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Allentown, PA, United States of America

Erin Marie Sorensen