U.S. Department of Energy

The United States of America As Represented by the Department of Energy

West Virginia University

Energy, United States Department of

David Hopkinson

Victor Armanda Kusuma

Frederick F Stewart

Joshua S McNally

Surendar R Venna

Ali Sekizkardes

Christopher J Orme

David Luebke

Bingyun Li

Nicholas S Siefert

Robert L Thompson

James Hoffman

Kevin P Resnik

Lei Hong

Erik Albenze

Xianfeng Wang

Megan Macala

Adefemi Egbebi

The disclosed invention relates to a composition comprising a crosslinked blend of polyphosphazene polymers. The composition comprises a first polyphosphazene and a second polyphosphazene, where the first polyphosphazene and the second polyphosphazene being bound by a thiol bearing crosslinking agent. Such compositions are useful as a membrane material for the separation of gasses in a gaseous mixture.

Crosslinked polyphosphazene blends for gas separation membranes

Accordingly, it is an object of this disclosure to provide a blend polymeric membrane to provide the separation of COfrom a gaseous mixture. The blend polymeric membrane comprises a blend of polyphosphazene and polymers of intrinsic microporosity. Further, the present disclosure also provides a method of use for the blend polymeric membrane for the separation of gases in a gaseous mixture.

Mechanically robust PIM-1 and polyphosphazene blended polymer for gas separation membranes

The present disclosure provides a method for the separation of a gas constituent from a gaseous mixture. The disclosure also provides polyethylene glycol disubstituted siloxane based solvents for use in the method. These solvents are of use for pre-combustion COcapture and are capable of replacing glycol-based solvents while offering operation at a higher temperature region. These solvents are also of use for generation of hydrogen from reformed natural gas or syngas, adjusting CO/Hratio for Coal & Biomass to Liquids, removal of COfrom syngas for coal & biomass to NH/Fertilizer, natural gas sweetening, and upgrading of landfill and biogas.

Di-substituted siloxane solvents for gas capture

A method for capturing COcomprising dissolving at least one pure amino acid (AA) in water without the use of a catalyst for establishing protonation of an amino group of the amino acid, adding at least one base solution to the amino acid and water solution to deprotonate the protonated amino group of the amino acid and forming an amino acid-XOH&#x2014;HO wherein X is sodium or potassium, and subjecting COto the amino acid-XOH&#x2014;HO to form new nanomaterials is provided. A regenerable nanofiber is disclosed comprising a NaHCOnanofiber, a KHCOnanofiber, or an amino acid nanofiber made from subjecting a COgas to an amino acid aqueous solvent. Preferably, the amino acid aqueous solvent is one or more of a Gly-NaOH&#x2014;HO, an Ala-NaOH&#x2014;HO, a Phe-NaOH&#x2014;HO, a Gly-KOH&#x2014;HO, an Ala-KOH&#x2014;HO, and a Phe-KOH&#x2014;HO.

Amino acids react with carbon dioxide (CO2) and form nanofibers and nanoflowers

One or more embodiments relate to providing substrate for separating a first gas component from a gaseous mixture, said substrate comprising a benzimidazole-linked polymer. Also provided is a method for synthesizing a substrate for separating a first gas component from a gaseous mixture, the method comprising performing a free condensation reaction between an aryl-o-diamine and an aryl-aldehyde to yield a benzimidazole-linked polymer. Other embodiments related to providing a COseparation membrane comprising benzimidazole-linked polymer residing within a matrix.

Polymer for carbon dioxide capture and separation

The disclosure relates to a membrane testing system for individual evaluation of a plurality of planar membranes subjected to a feed gas on one side and a sweep gas on a second side. The membrane testing system provides a pressurized flow of a feed and sweep gas to each membrane testing cell in a plurality of membrane testing cells while a stream of retentate gas from each membrane testing cell is ported by a retentate multiport valve for sampling or venting, and a stream of permeate gas from each membrane testing cell is ported by a permeate multiport valve for sampling or venting. Back pressure regulators and mass flow controllers act to maintain substantially equivalent gas pressures and flow rates on each side of the planar membrane throughout a sampling cycle. A digital controller may be utilized to position the retentate and permeate multiport valves cyclically, allowing for gas sampling of different membrane cells over an extended period of time.

Constant pressure high throughput membrane permeation testing system

Growing community of inventors

Morgantown, WV, United States of America

David Hopkinson