University of Michigan

The United States of America As Represented by the United States

Other

The State University of New York

Electric Power Research Institute Incorporated

Ngk Insulators, Inc.

Chevron U.s.a. Inc.

Aluminum Company of America

Gas Research Institute

Tenneco Automotive Operating Company Inc.

Ralph T Yang

Akira Takahashi

Joel Padin

Frances H Yang

Ming-Shing Shen

Anthony John Lachawiec, Jr

Salil U Rege

Arturo J Hernandez-Maldonado

Tomonori Takahashi

Curtis Lee Munson

J Edward Cichanowicz

Yingwei Li

Ruiqiang Long

Gongshin Qi

Ning Chen

Yuhe Wang

Stephen T Wilson

James M Chen

Meyer Steinberg

Linda Shi Cheng

Kevin Krist

Fabrizio C Rinaldi

Gerald A Farber

Nick D Hutson

Yingwel Li

Kent D Zammit

Jianping Chen

Luis Amestica

Arturo J Hermandez-Maldonado

Leonard M Naphtali

Robert Smol

Madhav R Ghate

A composition for hydrogen storage includes a receptor, a hydrogen dissociating metal doped on the receptor, and a metal salt doped on the receptor. The hydrogen dissociating metal is configured to spill over hydrogen to the receptor, and the metal salt is configured to increase a rate of the spill over of the hydrogen to the receptor.

Metal salt catalysts for enhancing hydrogen spillover

Methods for enhancing hydrogen spillover and storage are disclosed. One embodiment of the method includes doping a hydrogen receptor with metal particles, and exposing the hydrogen receptor to ultrasonication as doping occurs. Another embodiment of the method includes doping a hydrogen receptor with metal particles, and exposing the doped hydrogen receptor to a plasma treatment.

Enhancing hydrogen spillover and storage

A composition for hydrogen storage includes a source of hydrogen atoms, a receptor, and a chemical bridge formed between the source and the receptor. The chemical bridge is formed from a precursor material. The receptor is adapted to receive hydrogen spillover from the source.

Chemical bridges for enhancing hydrogen storage by spillover and methods for forming the same

A method for desulfurizing natural gas includes contacting the natural gas with an adsorbent which preferentially adsorbs at least one of hydrogen sulfide, COS, sulfur odorants, or combinations thereof, at a selected temperature and pressure, thereby producing desulfurized natural gas and an at least one of hydrogen sulfide/COS/sulfur odorant/combinations thereof-rich adsorbed component. The adsorbent includes a copper species adapted to form &#x3c0;-complexation bonds and direct metal-sulfur bonds with the at least one of hydrogen sulfide, COS, sulfur odorants, or combinations thereof, and wherein the preferential adsorption occurs by &#x3c0;-complexation and direct metal-sulfur bonding.

Natural gas desulfurization

Methods for enhancing hydrogen spillover and storage are disclosed. One embodiment of the method includes doping a hydrogen receptor with metal particles, and exposing the hydrogen receptor to ultrasonification as doping occurs. Another embodiment of the method includes doping a hydrogen receptor with metal particles, and exposing the doped hydrogen receptor to a plasma treatment.

A system and method for reducing nitrous oxides in diesel exhaust with hydrogen and carbon monoxide over a palladium based catalyst. The catalyst comprises a compound represented by the formula: X % Pd&#x2014;Y % VO/Z, where X is between about 0.1 to about 2.0, Y is between about 0.1 to about 7.0, and Z is an oxide support.

Selective catalyst reduction of nitrogen oxides with hydrogen

A method for removing thiophene and thiophene compounds from liquid fuel includes contacting the liquid fuel with an adsorbent which preferentially adsorbs the thiophene and thiophene compounds. The adsorption takes place at a selected temperature and pressure, thereby producing a non-adsorbed component and a thiophene/thiophene compound-rich adsorbed component. The adsorbent includes either a metal or a metal ion that is adapted to form &#x3c0;-complexation bonds with the thiophene and/or thiophene compounds, and the preferential adsorption occurs by &#x3c0;-complexation. A further method includes selective removal of aromatic compounds from a mixture of aromatic and aliphatic compounds.

Selective sorbents for purification of hydrocartons

A method for removing thiophene and thiophene compounds from liquid fuel includes contacting the liquid fuel with an adsorbent which preferentially adsorbs the thiophene and thiophene compounds. The adsorption takes place at a selected temperature and pressure, thereby producing a non-adsorbed component and a thiophene/thiophene compound-rich adsorbed component. The adsorbent includes either a metal or a metal cation that is adapted to form &#x3c0;-complexation bonds with the thiophene and/or thiophene compounds, and the preferential adsorption occurs by &#x3c0;-complexation. A further method includes selective removal of aromatic compounds from a mixture of aromatic and aliphatic compounds.

Selective sorbents for purification of hydrocarbons

Sulfur resistant/tolerant adsorbents useful for separating olefins from paraffins in a cracked gas stream including hydrogen sulfide. The method comprises the steps of contacting the gaseous mixture with an adsorbent which preferentially adsorbs the alkene, at a selected temperature and pressure, thereby producing a non-adsorbed component and an alkene-rich adsorbed component; the adsorbent comprising a carrier having a surface area, the carrier having been impregnated with a silver compound by incipient wetness, the silver compound releasably retaining the alkene; and changing at least one of the pressure and temperature to thereby release the alkene-rich component from the adsorbent. The adsorbent substantially maintains its adsorbent capacity and preference for the alkene in the presence of the sulfur compound. Sulfur resistant/tolerant adsorbents useful for selectively separating dienes from a mixture, particularly one containing mono-olefins and hydrogen sulfide, are also disclosed.

Sulfur resistant adsorbents

The invention provides novel adsorbents for use in the separation of unsaturated hydrocarbons from a mixture of gases containing such hydrocarbons. The preferred adsorbents comprise metal compounds supported on high surface area carriers. The adsorbents of the invention are usable in pressure swing adsorption or temperature swing adsorption processes.

Selective adsorption of alkenes using supported metal compounds

The invention provides new methods for separating nitrogen from a mixture. The invention provides adsorbents specifically for accomplishing nitrogen separation. The adsorbents and separation methods are particularly useful for the selective adsorption of nitrogen from air. In one aspect, the adsorbent comprises an ion exchange zeolite X and preferably zeolite LSX (low silica zeolite X). The zeolite is most preferably a lithium-based zeolite. Further, the zeolite has exchangeable cationic sites, with silver cation or copper cation occupying at least some of the exchangeable cationic sites. The Ag/Cu exchanged zeolite is heat-treated under specific conditions as per the invention. The presence of the silver cation or copper cation at any of the sites will provide an improvement over the non-exchanged zeolite.

Lithium-based zeolites containing silver and copper and use thereof for selective absorption

The present invention provides a catalyst for selective catalytic reduction of nitrogen oxide compounds with ammonia comprising a composition of one or more pillared interlayered clays, one or more metal ions exchanged with the pillared interlayered clays, and one or more promoter ions exchanged with the pillared interlayered clays. Specifically, the pillared interlayered clay (PILC) catalysts of the present invention include Fe , Cr , Mn , Co , Cu , and Ni exchanged Al O -PILC, TiO -PILC, ZrO -PILC or SiO -PILC catalysts. The promoters include Ce, La, Pr, Th and Nd. These pillared clay catalysts of the present invention show remarkable activity for the SCR reaction.

Superior pillared clay catalysts for selective catalytic reduction of nitrogen oxides for power plant emission control

A method of removing dioxins from an exhaust gas, including the steps of introducing carbon nanotubes into a stream of the dioxin-containing exhaust gas, and sorbing dioxins on the carbon nanotubes.

Method of treating exhaust gas

Growing community of inventors

Ann Arbor, MI, United States of America

Ralph T Yang