Membrane Technology and Research, Inc

King Abdullah University of Science and Technology

United Technologies Corporation

University of Texas System

Leland Stanford Junior University

Ingo Pinnau

Zhenjie He

Richard W Baker

Bader Saleh Ghanem

Ramin Daniels

Andre R Da Costa

Johannes Gerard Wijmans

Kaaeid A Lokhandwala

Karl D Amo

Xiaohua Ma

Lora G Toy

Ingo Blume

Klaus-Viktor Peinemann

Jennifer Ly

Phuong Nguyen

Louis J Spadaccini

Alvin Ng

Anurag P Mairal

Scott Segelke

Yingge Wang

Carlos G Casillas

Raja Swaidan

Haralambos Cordatos

William John Koros

Zidu Ma

He Huang

Marc L Jacobs

Yan Xia

Foster Phillip Lamm

Harry Cordatos

Shannon Goakey

Jintang Duan

Johannes G Wijmans

Eric Litwiller

Atsushi Morisato

Nasser Alaslai

Zain Ali

Holden W H Lai

Rakan Sulaiman Bilaus

Mahmoud Atef Abdulhamid

Rolande J Blanc

Embodiments of the present disclosure feature an intrinsically microporous ladder-type Tröger's base polymer including a repeat unit based on a combination of W-shaped CANAL-type and V-shaped Tröger's base building blocks, methods of making the intrinsically microporous ladder-type Tröger's base polymer, and methods of using the intrinsically microporous ladder-type Tröger's base polymer to separate a chemical species from a fluid composition including a mixture of chemical species. Embodiments of the present disclosure further include ladder-type diamine monomers for reacting to form a Tröger's base in situ, and methods of making the ladder-type diamine monomers using catalytic arene-norbornene annulation.

Intrinsically microporous ladder-type Tröger's base polymers

Embodiments of the present disclosure generally describe ethano-Tr&#xf6;ger's base-amine monomers, ethano-Tr&#xf6;ger's base polyimides of intrinsic microporosity, membranes based on ethano-Tr&#xf6;ger's base polyimides of intrinsic microporosity, methods of making ethano-Tr&#xf6;ger's base-amine monomers, methods of making ethano-Tr&#xf6;ger's base polyimides of intrinsic microporosity prepared from ethano-Tr&#xf6;ger's base-amine monomers, methods of separating chemical species, and the like.

Ethano-Tr&#xf6;ger's base-derived diamines, polyimides, and polyimide-based membranes

Embodiments of the present disclosure describe polyimide blend compositions, methods of making polyimide blend compositions, methods of using polyimides, membranes including polyimide blends, methods of making membranes including polyimide blends, methods of separating mixtures using the membranes including polyimide blends, and the like.

Polyimide blends, methods of making each and methods of use

Aspects of the present disclosure provide for bridgehead-substituted triptycene-based diamines and methods of making bridgehead-substituted triptycene-based diamines.

Diamines, polyimides, methods of making each, and methods of use

Embodiments of the present disclosure provide compounds derived by Troger's amine as shown below, microporous structures, membranes, methods of making said compounds, structures, and membranes, methods of use for gas separation, and the like (Formula A1).

Troger's base-based monomers, and polymers, methods of making and uses thereof

Embodiments of the present disclosure include, a dianhydride monomer, a polyimide, a method of making a dianhydride, a method of making a polyimide, and the like. Embodiments of the present disclosure can be used in membrane-based gas separation applications.

Polyimide, dianhydride monomers, and polymers, methods of making and uses thereof

Embodiments of the present disclosure provide for an ortho (o)-hydroxy-functionalized diamine, a method of making an o-hydroxy-functionalized diamine, an o-hydroxy-functionalized diamine-based polyimide, a method of making an o-hydroxy-functionalized diamine imide, methods of gas separation, and the like.

O-hydroxy-functionalized diamines, polyimides, methods of making each, and methods of use

Embodiments of the present disclosure describe a method of fabricating a thin-film composite membrane comprising immersing a porous support in an aqueous solution containing a diamine; contacting the immersed porous support with an organic solution containing a multifunctional acyl chloride for at least 5 minutes and at a temperature of at least 50&#xb0; C. to form via interfacial polymerization a polyamide thin film on the porous support; and drying the thin-film composite membrane at about room temperature. Embodiments of the present disclosure further describe a method of separating fluids comprising contacting a defect-free polyamide-thin-film composite membrane with a fluid composition and capturing one or more chemical species from the fluid composition.

Thin film composite membranes for fluid separations

Described herein are ortho-dimethyl-substituted and tetramethyi-substituted triptycene-containing diamine monomers and microporous triptycene-based poiyimides and poiyamides, and methods of making the monomers and polymers.

Ortho-substituted triptycene-based diamines, monomers, and polymers, methods of making and uses thereof

A process for producing xylenes, in particular para-xylene that is less energy intensive than conventional processes is provided. In an embodiment the process comprises contacting a feed mixture in an isomerization zone with a catalyst at isomerization conditions and producing an isomerized product comprising a higher proportion of p-xylene than in the feed mixture, wherein the catalyst comprises an acidic sulfonated catalytic membrane. Xylene isomerization can also be coupled with a p-xylene extraction process, where the raffinate (p-xylene deprived stream) from the extraction process is fed to an isomerization reactor to produce p-xylene. In an embodiment, the process can comprise: a) providing a feed stream comprising a mixture of xylene isomers including p-xylene; b) extracting p-xylene from the feed stream using a separator to separate the feed stream into a p-xylene rich stream and a p-xylene deprived stream; and c) delivering the p-xylene deprived stream to an isomerization unit, the isomerization unit including an acidic sulfonated catalytic membrane, and using the isomerization unit to produce an isomerized product comprising a higher proportion of p-xylene than in the p-xylene deprived stream delivered to the isomerization unit. In any one or more aspects, the isomerization unit can be operated at a temperature in the range of less than 350&#xb0;, for example about 20&#xb0; C. to about 200&#xb0; C.

Xylene isomerization

Embodiments of the present disclosure provide for a triptycene-based A-B monomer, a method of making a triptycene-based A-B monomer, a triptycene-based ladder polymer, a method of making a triptycene-based ladder polymers, a method of using triptycene-based ladder polymers, a structure incorporating triptycene-based ladder polymers, a method of gas separation, and the like.

Triptycene-based ladder monomers and polymers, methods of making each, and methods of use

Embodiments of the present disclosure provide for an aromatic dianhydride, a method of making an aromatic dianhydride, an aromatic dianhydride-based polyimide, a method of making an aromatic dianhydride-based polyimide, and the like.

Dianhydrides, polyimides, methods of making each, and methods of use

A triptycene-based monomer, a method of making a triptycene-based monomer, a triptycene-based aromatic polyimide, a method of making a triptycene-based aromatic polyimide, methods of using triptycene-based aromatic polyimides, structures incorporating triptycene-based aromatic polyimides, and methods of gas separation are provided. Embodiments of the triptycene-based monomers and triptycene-based aromatic polyimides have high permeabilities and excellent selectivities. Embodiments of the triptycene-based aromatic polyimides have one or more of the following characteristics: intrinsic microporosity, good thermal stability, and enhanced solubility. In an exemplary embodiment, the triptycene-based aromatic polyimides are microporous and have a high BET surface area. In an exemplary embodiment, the triptycene-based aromatic polyimides can be used to form a gas separation membrane.

Triptycene-based dianhydrides, polyimides, methods of making each, and methods of use

A process that can alleviate the internal concentration polarization and can enhance membrane performance of a forward osmosis system includes the steps of passing a fluid in a forward osmosis system from a feed solution with a first osmotic pressure, through a membrane into a draw solution comprising a draw solute with a second osmotic pressure, where the first osmotic pressure is lower than the second osmotic pressure, the membrane includes an active layer and a support layer, and the membrane is oriented such that the active layer of the membrane faces a draw side, and the support layer faces a feed side; and applying an external force to the fluid on the feed side of the membrane.

Forward osmosis process

Growing community of inventors

Thuwal, Saudi Arabia

Ingo Pinnau