Air Products and Chemicals, Inc.

Garret Chi-Ho Lau

William Jack Casteel, Jr

Erin Marie Sorensen

Roger Dean Whitley

Timothy Christopher Golden

Robert Quinn

Qiao Zhao

Charles G Coe

Fred William Taylor

Shubhra Jyoti Bhadra

Christopher Robert Bongo

Geoffrey John Ochs

Marissa Ann Bonanno

Donn Michael Herron

Jeffrey Raymond Hufton

Mohammad Ali Kalbassi

David Ross Graham

Paul Anthony Wright

Magdalena M Lozinska

Elliott L Bruce

Elizabeth M Seibel

Guarav Kumar

Venkataramanan Ravi

Charles Gardner Coe

Paula A Wright

William Jack Casteel Jr

Trace hydrogen may be removed from a dry gas by passing the dry gas at a temperature from about 0&#xb0; C. to about 60&#xb0; C. through at least one layer of a first hopcalite catalyst to produce product gas that is at least substantially free of hydrogen, wherein the first hopcalite catalyst has a molar ratio of copper to manganese of more than 0.55. Advantages include increase hydrogen capacity, lower feed and regeneration temperatures and lower sensitivity to carbon dioxide than equivalent processes using standard hopcalite catalyst having a Cu/Mn molar ratio from 0.45 to 0.55.

Removal of hydrogen impurity from gas streams

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 are novel, as-crystallized RHO zeolite compositions with improved uniformity in morphology. These RHO compositions are useful for preparing cation-exchanged RHO zeolites that can be used as adsorbents for oxygen and/or nitrogen with improved properties. 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 with improved morphology control.

RHO zeolites and method of making the same

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

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.

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New Tripoli, PA, United States of America

Garret Chi-Ho Lau