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제목 METHODS FOR PREPARING CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES FOR GAS SEPARATION
작성자 KCRC 등록일 2019-02-12 조회수 112

 

METHODS FOR PREPARING CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES FOR GAS SEPARATION

문헌번호

US 2019-0030491 A1 (2019.01.31)

출원번호

16/039936 (2018.07.19)

출원인

Georgia Tech Research Corporation

발명자

Chen Zhang | William John Koros

Current IPC

(Main)

B01D-067/00

 

 

우선권번호

-

 

 

요약

In embodiments of the present disclosure, a CMS hollow fiber membranes may be prepared to have an ultrathin (e.g. 2 microns or less) separation layer. A precursor hollow fiber may be prepared as dual layer fibers having a thin sheath layer and a core layer. During pyrolysis, the sheath layer is transformed into an ultrathin separation layer. Porosity of the core layer substrate is well-maintained during pyrolysis, thereby enabling high permeance of the CMS hollow fiber membrane. Additionally, in some embodiments, the sheath layer of the precursor hollow fibers may be hybridized prior to pyrolysis. By hybridizing the sheath layer prior to pyrolysis, a CMS hollow fiber may having an improved separation factor, including for example increased carbon dioxide/methane selectivity, may be provided.

대표청구항

1. A method for preparing a carbon molecular sieve hollow fiber membrane having a thin outer skin layer, the method comprising: a. preparing a hollow polymer fiber having a core layer and a sheath layer; andb. pyrolyzing the hollow polymer fiber to prepare a carbon molecular sieve hollow fiber membrane;wherein the carbon molecular sieve hollow fiber membrane comprises a porous substrate layer and an outer skin layer, the outer skin layer having a thickness of 2 microns or less.

WIPS 패밀리

US2019-0030491A1

 

이전글/다음글
첨부파일 us20190030491a1p.pdf
이전글 혼합가스에서 이산화탄소를 분리하는 데 사용하기 위한 흡수제
다음글 PRODUCTION OF BIOMETHANE USING MULTIPLE TYPES OF MEMBRANE