Hollow fiber carbon molecular sieve membrane and preparation and use thereof
US-2015053079-A1 · Feb 26, 2015 · US
Stabilization of porous morphologies for high performance carbon molecular sieve hollow fiber membranes
US9211504B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9211504-B2 |
| Application number | US-201213666370-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 1, 2012 |
| Priority date | Dec 20, 2011 |
| Publication date | Dec 15, 2015 |
| Grant date | Dec 15, 2015 |
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Abstract
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Carbon molecular sieves (CMS) membranes having improved thermal and/or mechanical properties are disclosed herein. In one embodiment, a carbon molecular sieve membrane for separating a first and one or more second gases from a feed mixture of the first gas and one or more second gases comprises a hollow filamentary carbon core and a thermally stabilized polymer precursor disposed on at least an outer portion of the core. In some embodiments, the thermally stabilized polymer precursor is created by the process of placing in a reaction vessel the carbon molecular sieve membrane comprising an unmodified aromatic imide polymer, filling the reaction vessel with a modifying agent, and changing the temperature of the reaction vessel at a temperature ramp up rate and ramp down rate for a period of time so that the modifying agent alters the unmodified aromatic imide polymer to form a thermally stabilized polymer precursor.
First claim
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We claim: 1. A process for forming a carbon membrane using precursor pre-treatment comprising: providing a polymer precursor; pre-treating at least a portion of the polymer precursor with an agent that is capable of reducing substructure collapse; and subjecting the pre-treated polymer precursor to pyrolysis; wherein the step of pre-treating at least a portion of the polymer precursor provides at least a 300% increase in the CO 2 permeance of the carbon membrane in contrast…
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Operations & Transport · mapped topic
- B01D67/0076Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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- What does patent US9211504B2 cover?
- Carbon molecular sieves (CMS) membranes having improved thermal and/or mechanical properties are disclosed herein. In one embodiment, a carbon molecular sieve membrane for separating a first and one or more second gases from a feed mixture of the first gas and one or more second gases comprises a hollow filamentary carbon core and a thermally stabilized polymer precursor disposed on at least an…
- Who is the assignee on this patent?
- Georgia Tech Res Inst, Shell Oil Co
- What technology area does this patent fall under?
- Primary CPC classification B01D67/0076. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 15 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).