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Honeywell International Inc.

Northwestern University

Chunqing Liu

Howie Q Tran

Stephen T Wilson

Lubo Zhou

Xueliang Dong

Nicole K Karns

Man-Wing Tang

Raisa Minkov

Zara Osman

Carl Liskey

Trung S Pham

Travis C Bowen

David A Lesch

Syed A Faheem

Stanley Joseph Frey

Peter K Coughlin

Chaoyi Ba

Jeffrey J Chiou

Angela N Troxell

Santi Kulprathipanja

Charles P Luebke

Jeffery C Bricker

Michael B Hamoy

Raisa Serbayeva

Emily G Harbert

Stuart R Miller

Beth McCulloch

Mark E Schott

Simon E Albo

Stephen Frederic Yates

Manuela Serban

Chad R Huovie

Carlos A Cabrera

Ashish Mathur

Eseoghene Jeroro

David W Greer

Saikrishna Laxmirajam Gosangari

Joseph B Lambert

Sudipto Chakraborty

Amber Arzadon

Jeremy Nolan Webb

Dung Le

Deng-Yang Jan

Jaime G Moscoso

James E Rekoske

Gregory R Werba

Gregory F Maher

Saadet Ulas Acikgoz

Mark M Davis

Rehan Zaki

Steven Kozup

Annabelle I Benin

Tihomir G Tonev

J Mark Houdek

Mander Singh

Zhixue Zhu

Jinfeng Wu

James H K Yang

Matthew C McGuirl

Dennis F Van Der Vliet

Carl W Liskey

A start-up process for conditioning an electrolysis system containing ionically conductive membrane, such as a polyelectrolyte multilayer coated proton exchange membranes, to reduce the break-in period is described. The conditioning involves heating the electrolysis feed, the electrolysis system, or both at a temperature above the desired operating temperature to achieve faster startup. In some cases, the voltage is controlled to avoid damage to the sample.

Method for conditioning an electrolysis system

A new polyelectrolyte multilayer coated proton-exchange membrane for electrolysis and fuel cell applications has been developed for electrolysis and fuel cell applications. The polyelectrolyte multilayer coated proton-exchange membrane comprises: a cation exchange membrane, and a polyelectrolyte multilayer coating on one or both surfaces of the cation exchange membrane. The polyelectrolyte multilayer coating comprises alternating layers of a polycation polymer and a polyanion polymer. The polycation polymer layer is deposited on and is in contact with the cation exchange membrane. The top layer of the polyelectrolyte multilayer coating can be either a polycation polymer layer or a polyanion polymer layer.

Polyelectrolyte multilayer coated proton exchange membrane for electrolysis and fuel cell applications

An integrated apparatus for hydrogenating olefins wherein the hydrogen stream is generated from the electrolysis of water is described. Water is derived from a first reaction step wherein a first feed stream comprising oxygenated hydrocarbons is reacted to produce a first reacted product stream comprising olefins and a second reacted product stream comprising water. The second reacted product stream is electrolyzed to produce an electrolyzer product stream comprising hydrogen. Hydrogen is used to hydrogenate olefins. A paraffin stream can be obtained from the hydrogenated effluent.

Apparatus for the hydrogenation of olefins

A low cost, high selectivity asymmetric polyimide/polyethersulfone (PES) blend hollow fiber membrane, a method of making the membrane and its use for a variety of liquid, gas, and vapor separations such as deep desulfurization of gasoline and diesel fuels, ethanol/water separations, pervaporation dehydration of aqueous/organic mixtures, CO/CH, CO/N, H/CH, He/CH, O/N, HS/CH, olefin/paraffin, iso/normal paraffins separations, and other light gas mixture separations. The polyimide/PES blend hollow fiber membrane is fabricated from a blend of a polyimide polymer and PES and showed surprisingly unique gas separation property with higher selectivities than either the polyimide hollow fiber membrane without PES polymer or the PES hollow fiber membrane without PES polymer for gas separations such as for H/CH, He/CH, HS/CH, CO/CHseparations.

High selectivity polyimide/PES blend hollow fiber membrane for gas separations

Anion exchange polymers having high OHconductivity, chemical stability, and mechanical stability have been developed for use in AEMs. The anion exchange polymers have stable hydrophobic polymer backbones, stable hydrophilic quaternary ammonium cationic groups, and hydrophilic phenolic hydroxyl groups on the polymer side chains. The polymers have polymer backbones free of ether bonds, hydrophilic polymer side chains, and piperidinium ion-conducting functionality, which enables efficient and stable operation in water or COelectrolysis, redox flow battery, and fuel cell applications. The polymer comprises a plurality of repeating units of formula (I) Anion exchange membranes and membrane electrode assemblies incorporating the anion exchange polymers are also described.

Anion exchange polymers and membranes for electrolysis

A composite proton conductive membrane, comprising an inorganic filler having covalently bonded acidic functional groups and a high surface area of at least 150 m/g; and a water insoluble ionically conductive polymer. This membrane provides advantages over traditional polymeric proton conductive membranes for redox flow battery, fuel cell, and electrolysis applications include: 1) enhanced proton conductivity/permeance due to the formation of additional nanochannels for proton conducting; 2) improved proton/electrolyte selectivity for redox flow battery application; 3) reduced membrane swelling and gas or electrolyte crossover; 4) improved chemical stability; 5) increased cell operation time with stable performance, and 6) reduced membrane cost.

Composite proton conductive membranes

Methods to improve redox flow battery performance with improved CE, reduced electrolyte solution crossover, and simplified solution refreshing process have been developed. The methods include controlling the pre-charging degree and conditions to allow high quality metal plating (ductile and uniform), for example, Fe(O), on the negative electrode. Control of the pre-charging conditions can be combined with increasing the concentration of metal ions compared to existing systems, while maintaining the same concentration in both the negative and positive electrolytes, or increasing the concentration of metal ions in the negative electrolyte so that the negative electrolyte has a higher concentration of metal ions than the positive electrolyte.

Method to improved redox flow battery performance

An integrated process for hydrogenating olefins wherein the hydrogen stream is generated from electrolysis of water is described. Water is derived from a first reaction step wherein a first feed stream comprising oxygenated hydrocarbons is reacted to produce a first reacted product stream comprising olefins and a second reacted product stream comprising water. The second reacted product stream is electrolyzed to produce an electrolyzer product stream comprising hydrogen. Hydrogen is used to hydrogenate olefins. A paraffin stream can be obtained from the hydrogenated effluent.

Process for the hydrogenation of olefins

A thin film composite gas separation membrane comprising a polyether block amide copolymer coating layer and a nanoporous asymmetric support membrane with nanopores on the skin layer surface of the support membrane and gelatin polymers inside the nanopores on the skin layer surface of the support membrane. A method for making the thin film composite gas separation membrane is provided as well as the use of the membrane for a variety of separations such as separations of hydrogen sulfide and carbon dioxide from natural gas, carbon dioxide removal from flue gas, fuel gas conditioning, hydrogen/methane, polar molecules, and ammonia mixtures with methane, nitrogen or hydrogen and other light gases separations, but also for natural gas liquids recovery and hydrogen sulfide and carbon dioxide removal from natural gas in a single step.

High selectivity membranes for hydrogen sulfide and carbon dioxide removal from natural gas

Stable and high performance positive and negative electrolytes compositions to be used in redox flow battery systems are described. The redox flow battery system, comprises: at least one rechargeable cell comprising a positive electrolyte, a negative electrolyte, and an ionically conductive membrane positioned between the positive electrolyte and the negative electrolyte, the positive electrolyte in contact with a positive electrode, and the negative electrolyte in contact with a negative electrode. The positive electrolyte consists essentially of water, a first amino acid, an inorganic acid, an iron precursor, a supporting electrolyte, and optionally a boric acid. The negative electrolyte consists essentially of water, the iron precursor, the supporting electrolyte, and a negative electrolyte additive. The iron precursor is FeCl, FeCl, FeSO, Fe(SO), FeO, Fe, FeO, or combinations thereof. The supporting electrolyte is LiCl, NaCl, NaSO, KCl, NHCl, or combinations thereof. The negative electrolyte additive is boric acid or a combination of the boric acid and a second amino acid.

Electrolyte compositions for redox flow batteries

Low cost membrane electrode assemblies (MEA) with improved coulombic efficiency (CE), reduced maintenance cost, and improved deliverable capacity have been developed for redox flow batteries and other electrochemical reaction applications. The MEA comprises: a microporous substrate membrane, first and second hydrophilic ionomeric polymer coating layers on surfaces of the microporous substrate membrane, and an electrode adhered to a second surface of the second hydrophilic ionomeric polymer coating layer. Methods of preparing the MEA and a redox flow battery system incorporating the MEA are also described.

Membrane electrode assembly for redox flow battery applications

An ionically conductive asymmetric composite membrane for use in redox flow battery, fuel cell, electrolysis applications and the like is described. It comprises a microporous substrate membrane and an asymmetric hydrophilic ionomeric polymer coating layer on the surface of the microporous substrate layer. The coating layer is made of a hydrophilic ionomeric polymer. The asymmetric hydrophilic ionomeric polymer coating layer comprises a porous layer having a first surface and a second surface, the first surface of the porous layer on the surface of the microporous substrate layer and a nonporous layer on the second surface of the porous support layer. The microporous substrate membrane is made from a different polymer from the hydrophilic ionomeric polymer.

Ionically conductive asymmetric composite membrane for electrochemical energy system applications

A process and system to control the final product quality in a system for separating olefins and paraffins in a membrane system. A small finishing membrane stage is added to an existing membrane system that takes a slip stream from the product, purifies it to a very high concentration of propylene and blends it back into the product stream.

Method and system to control and maintain product quality for an olefin membrane separation

Growing community of inventors

Arlington Heights, IL, United States of America

Chunqing Liu