Uop Lcc

Ford Global Technolgoies, LLC

Northwestern University

Syed A Faheem

Chunqing Liu

Raisa Minkov

Travis C Bowen

Zara Osman

Emily G Harbert

John J Low

Gregory John Lewis

Jeffery C Bricker

Lubo Zhou

Jun Yang

David A Lesch

Richard R Willis

Christopher Mark Wolverton

Man-Wing Tang

Donald Siegel

Jeffrey J Chiou

Randall Q Snurr

Annabelle I Benin

Andrea Sudik

Ahmet Ozgur Yazaydin

Jw Adriaan Sachtler

Paul M Dosek

The present invention discloses a new type of polyimide membrane with high permeances and high selectivities for gas separations and particularly for CO/CHand H/CHseparations. The polyimide membranes have COpermeability of 50 Barrers or higher and single-gas selectivity for CO/CHof 15 or higher at 50&#xb0; C. under 791 kPa for CO/CHseparation. The polyimide membranes have UV cross-linkable functional groups and can be used for the preparation of UV cross-linked polyimide membranes having COpermeability of 20 Barrers or higher and single-gas selectivity for CO/CHof 35 or higher at 50&#xb0; C. under 791 kPa for CO/CHseparation.

Separation process using a polyimide membrane

Blend polymer gas separation membrane

Process of separating gases using polyimide membranes

Polyimide gas separation membranes

The present invention involves the use of a novel membrane system for natural gas upgrading. This membrane system includes a first-stage membrane such as a membrane prepared from the polymer of intrinsic microporosity (PIM) to selectively remove hydrocarbons from Cto Cto control the dew point of natural gas, and a second-stage membrane such as a polybenzoxazole (PBO) or crosslinked PBO membrane to selectively remove COfrom natural gas. The new membrane system described in the current invention eliminates the use of high cost and high footprint membrane pretreatment. Therefore, the membrane system can significantly reduce the footprint and cost for natural gas upgrading compared to the current commercially available membrane systems that include a non-membrane-related pretreatment system.

Membrane system for natural gas upgrading

The present invention discloses high performance polybenzoxazole membranes prepared from aromatic poly(o-hydroxy amide) membranes by thermal cyclization and a method for using these membranes. The polybenzoxazole membranes were prepared by thermal treating aromatic poly(o-hydroxy amide) membranes in a temperature range of 200&#xb0; to 550&#xb0; C. under inert atmosphere. The aromatic poly(o-hydroxy amide) membranes used for making the polybenzoxazole membranes were prepared from aromatic poly(o-hydroxy amide) polymers comprising pendent phenolic hydroxyl groups ortho to the amide nitrogen in the polymer backbone. In some embodiments of the invention, the polybenzoxazole membranes may be subjected to an additional crosslinking step to increase the selectivity of the membranes. These polybenzoxazole membranes showed significantly improved permeability for gas separations compared to the precursor aromatic poly(o-hydroxy amide) membranes and are not only suitable for a variety of liquid, gas, and vapor separations, but also can be used in catalysis and fuel cells.

Polybenzoxazole membranes prepared from aromatic polyamide membranes

The present invention discloses a new type of polyimide membranes including hollow fiber and flat sheet membranes with high permeances for air separations and a method of making these membranes. The new polyimide hollow fiber membranes have Opermeance higher than 300 GPU and O/Nselectivity higher than 3 at 60&#xb0; C. under 308 kPa for O/Nseparation. The new polyimide hollow fiber membranes also have COpermeance higher than 1000 GPU and single-gas selectivity for CO/CHhigher than 20 at 50&#xb0; C. under 791 kPa for CO/CHseparation.

High permeance polyimide membranes for air separation

The present invention involves the use of certain metal organic frameworks that have been treated with water or another metal titrant in the storage of carbon dioxide. The capacity of these frameworks is significantly increased through this treatment.

Gas adsorption on metal-organic frameworks

A reversible hydrogen storage composition having an empirical formula of:LiNMgBHwhere 0.4&#x2266;x&#x2266;0.8; 0.2&#x2266;y&#x2266;0.6; 0&#x3c;z&#x2266;0.4, x+y+z=1 and 'w' varies from 0 to 2x+2y+4z. This composition shows greater low temperature reversible hydrogen storage compared to binary systems such as MgH&#x2014;LiNH.

Multi-component hydrogen storage material

Growing community of inventors

Huntley, IL, United States of America

Syed A Faheem