Air Products and Chemicals, Inc.

Pez, Guido P.

Quinn, Robert

Appleby, John B.

Robert Quinn

Rodney John Allam

Timothy Christopher Golden

Erin Marie Sorensen

Guido Peter Pez

William Jack Casteel, Jr

Edward Landis Weist, Jr

Jeffrey Raymond Hufton

Robin Joyce Maliszewskyj

Garret Chi-Ho Lau

John B Appleby

Diwakar Garg

Roger Dean Whitley

Mohammad Ali Kalbassi

Frederick Carl Wilhelm

Fred William Taylor

Shubhra Jyoti Bhadra

Paul Anthony Wright

Daniel V Laciak

Magdalena M Lozinska

Francis Joseph Waller

Shankar Nataraj

Vincent White

Gokhan Alptekin

Matthew Schaefer

Terry Lee Slager

Margarita Dubovik

Garrett Chi-Ho Lau

Elliott L Bruce

Edward Landis Weist

William Jack Casteel

Garg Diwakar

Paul A Wright

Paula A Wright

William Jack Casteel Jr

Jr Edward Landis Weist

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

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

Complex metal oxide-containing pellets and their use for producing hydrogen. The complex metal oxide-containing pellets are suitable for use in a fixed bed reactor due to sufficient crush strength. The complex metal oxide-containing pellets comprise one or more complex metal oxides and at least one of in-situ formed calcium titanate and calcium aluminate. calcium titanate and calcium aluminate are formed by reaction of suitable precursors in a mixture with one or more complex metal carbonates. The complex metal oxide-containing pellets optionally comprise at least one precious metal.

Hydrogen production using complex metal oxide pellets

The present invention provides a process for making a complex metal oxide comprising the formula ABO. The process comprises the steps of: (a) reacting in solution at a temperature of between about 75&#xb0; C. to about 100&#xb0; C. at least one water-soluble salt of A, at least one water-soluble salt of B and a stoichiometric amount of a carbonate salt or a bicarbonate salt required to form a mole of a carbonate precipitate represented by the formula AB(CO), wherein the reacting is conducted in a substantial absence of carbon dioxide to form the carbonate precipitate and wherein the molar amount of carbonate salt or bicarbonate salt is at least three times the stoichiometric amount of carbonate or bicarbonate salt required to form a mole of the carbonate precipitate; and (b) reacting the carbonate precipitate with an oxygen containing fluid under conditions to form the complex metal oxide.

Preparation of complex metal oxides

Process for producing hydrogen comprising reacting at least one hydrocarbon and steam in the presence of a complex metal oxide and a steam-hydrocarbon reforming catalyst in a production step under reaction conditions sufficient to form hydrogen gas and a spent complex metal oxide, wherein the complex metal oxide is represented by the formulaABOwherein A represents at least one metallic element having an oxidation state ranging from +1 to +3, inclusive, wherein the metallic element is capable of forming a metal carbonate; x is a number from 1 to 10, inclusive; B represents at least one metallic element having an oxidation state ranging from +1 to +7, inclusive; y is a number from 1 to 10, inclusive; and n represents a value such that the complex metal oxide is rendered electrically neutral.

Process for autothermal generation of hydrogen

The present invention relates to a method of producing a diesel fuel blend having a pre-determined flash-point and a pre-determined increase in cetane number over the stock diesel fuel. Upon establishing the desired flash-point and increase in cetane number, an amount of a first oxygenate with a flash-point less than the flash-point of the stock diesel fuel and a cetane number equal to or greater than the cetane number of the stock diesel fuel is added to the stock diesel fuel in an amount sufficient to achieve the pre-determined increase in cetane number. Thereafter, an amount of a second oxygenate with a flash-point equal to or greater than the flash-point of the stock diesel fuel and a cetane number greater than the cetane number of the stock diesel fuel is added to the stock diesel fuel in an amount sufficient to achieve the pre-determined increase in cetane number.

Method of producing a diesel fuel blend having a pre-determined flash-point and pre-determined increase in cetane number

The present invention is a process for separating acid gas from gaseous mixtures containing acid gas and at least one non-acid gas. The process comprises bringing the gas stream into contact with a multilayer composite membrane comprising a non-selective polymeric support layer and a separating layer comprising a blend of a water soluble polymer and one-half equivalent or more of an acid gas reactive salt based upon the repeating unit of the water soluble polymer, the acid gas reactive salt which is formed from a monovalent cation and an anion for which the pK,of the conjugate acid is greater than 3, wherein the multilayer composite membrane separates the acid gas from the gaseous mixture by selectively permeating the acid gas.

Process for separating acid gases from gaseous mixtures utilizing composite membranes formed from salt-polymer blends

A process is provided for selectively removing acid gases from a gas mixture by contacting said gas mixture with an anion exchange resin containing quaternary ammonium functionalities and moderately basic counteranions. The absorption process is reversible and the absorbent can be regenerated using an inert gas purge or by applying a vacuum.

Removal of acid gases from gas mixtures using ion exchange resins

A process is disclosed for reversibly absorbing acid gases from gaseous mixtures wherein a salt hydrate is heated to a temperature above its melting point and exposed to an acid gas which is absorbed by the salt hydrate to form a salt hydrate melt. This melt is thereafter cooled to a temperature sufficient to solidify the melt and to desorb the acid gas from the solidified salt hydrate. Preferred salt hydrates include tetramethylammonium fluoride tetrahydrate and tetraethylammonium acetate tetrahydrate.

Process for reversibly absorbing acid gases from gaseous mixtures

Acid gases are separated from a gas stream by bringing the gas stream into contact with a multilayer composite membrane comprising a nonselective polymeric support layer and an active separating layer comprising a polyelectrolyte polymer which contains cationic groups which are electrostatically associated with anions for which the pK.sub.a of the conjugate acid is greater than 3.

Polyelectrolyte membranes for the separation of acid gases

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Macungie, PA, United States of America

Robert Quinn