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1.发明申请
公开(公告)号：WO2019023048A1
公开(公告)日：2019-01-31
申请号：PCT/US2018/043006
申请日：2018-07-20
发明人： ZHANG, Chen , KOROS, William, John
摘要： 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.
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公开(公告)号：WO2019036192A1
公开(公告)日：2019-02-21
申请号：PCT/US2018/044790
申请日：2018-08-01
发明人： ZHANG, Chen , KOROS, William
IPC分类号： B01D53/00 , B01D53/96 , B01D69/00 , B01D69/02 , B01D71/00 , B01D71/02 , B01J29/00 , B01J29/90
CPC分类号： B01D71/021 , B01D53/228 , B01D65/02 , B01D69/088 , B01D2256/24 , B01D2256/245 , B01D2257/102 , B01D2257/304 , B01D2257/504 , B01D2257/7022 , B01D2321/16 , B01D2325/028 , B01J27/20 , B01J29/035
摘要： Embodiments of the present disclosure relate to methods of treating carbon molecular sieve (CMS) membranes, and in particular CMS hollow fiber membranes, that have undergone aging-induced permeance/permeability loss. By treating aged CMS membranes in accordance with embodiments of the present disclosure, the CMS membranes may be regenerated such that the aging-induced permeance/permeability loss is reversed and the permeance/permeability of the CMS membrane is increased. In some embodiments, the permeance/permeability of the treated CMS membrane may be increased to such a degree that the permeance/permeability of the regenerated CMS membrane is at least as high as the original permeance/permeability of the CMS membrane prior to aging-induced permeance/permeability loss.
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公开(公告)号：WO2015183831A1
公开(公告)日：2015-12-03
申请号：PCT/US2015/032479
申请日：2015-05-26
发明人： KOROS, William John , ZHANG, Chen
CPC分类号： B01D71/64 , B01D69/088 , B01D69/12 , B01D69/148 , B01D71/56 , B01D71/70 , B01D2325/02 , B01D2325/04 , B29C47/0004 , B29C47/0014 , B29C47/065 , B29C47/081 , B29K2001/08 , B29K2079/08 , B29K2079/085 , B29K2105/251 , B29L2009/005 , B29L2023/001 , B29L2031/755 , C08G73/1067 , D01D1/02 , D01D5/24 , D01F6/74 , D10B2401/10 , D10B2505/04
摘要： Provided herein are metal organic framework/polymer mixed-matrix hollow fiber membranes and metal organic framework/carbon molecular sieve mixed-matrix hollow fiber membranes. The materials have high MOF particle loading and are easily scalable. The MOF/polymer mixed-matrix hollow fibers are formed using a dry-jet/wet-quench fiber spinning technique and show C 3 H 6 /C 3 H 8 selectivity that is significantly enhanced over the pure polymer fiber and that is consistent with the selectivity of mixed-matrix dense films of the same MOF/polymer combination. The MOF/CMS mixed-matrix hollow fibers are formed by pyrolyzing the MOF/polymer mixed-matrix hollow fibers and show increased C 3 H 6 permeance and increased selectivity over the MOF/polymer mixed-matrix hollow fiber membranes.
摘要翻译： 本文提供了金属有机骨架/聚合物混合基质中空纤维膜和金属有机骨架/碳分子筛混合基质中空纤维膜。 该材料具有高MOF颗粒负载，并且易于扩展。 MOF /聚合物混合基质中空纤维使用干喷射/湿式淬火纤维纺丝技术形成，并显示出比纯聚合物纤维显着增强的C3H6 / C3H8选择性，并且与混合基质密度的选择性一致 相同MOF /聚合物组合的膜。 通过MOF /聚合物混合基质中空纤维的热解形成MOF / CMS混合基质中空纤维，并显示出比MOF /聚合物混合基质中空纤维膜增加的C3H6渗透性和增加的选择性。
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公开(公告)号：WO2018148202A1
公开(公告)日：2018-08-16
申请号：PCT/US2018/017051
申请日：2018-02-06
摘要： The present disclosure describes a process for separating at least a first gas component and a second gas component by contacting a gas stream comprising the first and second gas components with a carbon molecular sieve (CMS) membrane under aggressive gas separation conditions in which the partial pressure of the selectively sorbed gas component in the gas stream is high. Despite the high partial pressure of the sorbed gas component, the selectivity of the carbon molecular sieve membrane is not substantially reduced by plasticization or saturation. In some embodiments, the aggressive gas separation process may include contacting a gas stream at supercritical conditions with a CMS membrane to separate at least first and second gas components. The process may be useful for, among other things, the separation of CO2 from a natural gas stream.
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公开(公告)号：WO2016196595A1
公开(公告)日：2016-12-08
申请号：PCT/US2016/035217
申请日：2016-06-01
发明人： KOROS, William John , ZHANG, Chen
CPC分类号： B01D71/021 , B01D53/00 , B01D53/22 , B01D53/228 , B01D67/0067 , B01D69/02 , B01D2053/221 , B01D2053/224 , B01D2253/102 , B01D2256/10 , B01D2256/12 , B01D2256/16 , B01D2256/245 , B01D2257/504 , B01D2323/08 , B01D2325/022 , B01D2325/20 , Y02C10/10
摘要： Embodiments of the present disclosure are directed to a process for making a carbon molecular sieve membrane having a desired permselectivity between a first gas species and a second gas species, in which the second gas species has a larger kinetic diameter than the first gas species. The process comprises providing a polymer precursor and pyrolyzing the polymer precursor at a pyrolysis temperature that is effective to selectively reduce the sorption coefficient of the second gas species, thereby increasing the permselectivity of the resulting carbon molecular sieve membrane.
摘要翻译： 本公开的实施方案涉及一种制备在第一气体物质和第二气体物质之间具有期望的渗透选择性的碳分子筛膜的方法，其中第二气体物质具有比第一气体物质更大的动力学直径。 该方法包括提供聚合物前体并在热解温度下热解聚合物前体，所述热解温度有效地选择性地降低第二气体种类的吸附系数，从而增加所得碳分子筛膜的选择性。
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