Ionic liquid-solid-polymer mixed matrix membranes for gas separations
    41.
    发明授权
    Ionic liquid-solid-polymer mixed matrix membranes for gas separations 有权
    用于气体分离的离子液体 - 固体 - 聚合物混合基质膜

    公开(公告)号:US07943543B1

    公开(公告)日:2011-05-17

    申请号:US11537294

    申请日:2006-09-29

    IPC分类号: B01J20/28 B01D53/22

    摘要: New ionic liquid-solid-polymer mixed matrix membranes were proposed for gas separations such as CO2 removal from natural gas or N2. For the new mixed matrix membranes, the solids such as carbon molecular sieves, microporous molecular sieves, MCM-41 type of mesoporous molecular sieves, or polymer of intrinsic microporosity (PIM) are coated (or impregnated) with ionic liquids such as 1-butyl-3-methyl imidazolium bis[trifluoromethylsulfonyl]amide. The ionic liquids coated or impregnated solids are then dispersed in the continuous polymer matrix to form mixed matrix membranes. These hybrid mixed matrix membranes will combine the properties of the continuous polymer phase, the ionic liquids, and the dispersed ionic liquids coated or impregnated solids phase, which will possibly open up new opportunities for gas separation processes such as CO2 separation from natural gas or flue gas.

    摘要翻译: 提出了新的离子液固固体混合基质膜用于气体分离,例如从天然气或N2中除去二氧化碳。 对于新的混合基质膜,将诸如碳分子筛,微孔分子筛,MCM-41型介孔分子筛或本征微孔聚合物(PIM)的固体用离子液体例如1-丁基 -3-甲基咪唑双[三氟甲磺酰基]酰胺。 然后将离子液体涂覆或浸渍的固体分散在连续聚合物基质中以形成混合基质膜。 这些混合混合基质膜将结合连续聚合物相,离子液体和分散的离子液体涂覆或浸渍的固体相的性质,这可能为气体分离过程(例如从天然气或烟道中分离CO 2)开辟新的机会 加油站。

    Adsorbent and process for the separation of meta-xylene from aromatic hydrocarbons
    43.
    发明授权
    Adsorbent and process for the separation of meta-xylene from aromatic hydrocarbons 有权
    吸附剂和间二甲苯与芳烃分离的方法

    公开(公告)号:US07728187B2

    公开(公告)日:2010-06-01

    申请号:US12165266

    申请日:2008-06-30

    IPC分类号: C07C7/12

    摘要: Adsorbents and methods for the adsorptive separation of meta-xylene from a mixture containing at least one other C8 aromatic hydrocarbon (e.g., a mixture of ortho-xylene, meta-xylene, para-xylene, and ethylbenzene) are described. Suitable adsorbents comprise sodium zeolite Y having an average crystallite size from about 50 to about 700 nanometers. The adsorbents provide improved separation efficiency, which may be associated with a higher meta-xylene mass transfer rate and/or other beneficial effects. Exemplary desorbents for use in the process may comprise toluene, benzene, or indan.

    摘要翻译: 描述了从含有至少一种其它C 8芳族烃(例如邻二甲苯,间二甲苯,对二甲苯和乙苯的混合物)的混合物吸附分离间二甲苯的吸附剂和方法。 合适的吸附剂包括具有约50至约700纳米的平均微晶尺寸的沸石Y。 吸附剂提供改进的分离效率,其可能与较高的间二甲苯质量传递速率和/或其他有益效果相关。 用于该方法的示例性脱附剂可包括甲苯,苯或茚满。

    Mixed matrix adsorbent for para-xylene separation
    44.
    发明授权
    Mixed matrix adsorbent for para-xylene separation 有权
    用于对二甲苯分离的混合基质吸附剂

    公开(公告)号:US07638677B2

    公开(公告)日:2009-12-29

    申请号:US11534264

    申请日:2006-09-22

    IPC分类号: C07C7/12

    CPC分类号: C07C7/13 C07C15/08

    摘要: A process for separating C8 aromatics is disclosed. The process uses at least two adsorbents, and in particular a BaX zeolite and a KY zeolite, for the separation of para-xylene from a mixture of C8 aromatics.

    摘要翻译: 公开了一种用于分离C8芳族化合物的方法。 该方法使用至少两种吸附剂,特别是BaX沸石和KY沸石,用于从C8芳族化合物的混合物中分离对二甲苯。

    Crosslinked Organic-Inorganic Hybrid Membranes and Their Use in Gas Separation
    45.
    发明申请
    Crosslinked Organic-Inorganic Hybrid Membranes and Their Use in Gas Separation 有权
    交联有机无机杂化膜及其在气体分离中的应用

    公开(公告)号:US20090299015A1

    公开(公告)日:2009-12-03

    申请号:US12131392

    申请日:2008-06-02

    IPC分类号: C08L1/12

    摘要: The present invention is for crosslinked membranes and in particular for crosslinked poly(ethylene oxide)-cellulose acetate-silsesquioxane (PEO-CA-Si) organic-inorganic hybrid membranes and their use in gas separation. These crosslinked PEO-CA-Si membranes were prepared by in-situ sol-gel co-condensation of crosslinkable PEO-organotrialkoxysilane and CA-organotrialkoxysilane polymers in the presence of acetic acid catalyst during the formation of membranes. The crosslinkable PEO- and CA-organotrialkoxysilane polymers were synthesized via the reaction between the hydroxyl groups on PEO (or on CA) and the isocyanate on organotrialkoxysilane to form urethane linkages under mild conditions. The crosslinked PEO-CA-Si membranes exhibited both increased selectivity of CO2/N2 and CO2 permeability as compared to a CA membrane, suggesting that these membranes are very promising for gas separations such as CO2/N2 separation.

    摘要翻译: 本发明涉及交联膜,特别是交联聚(环氧乙烷) - 醋酸纤维素 - 倍半硅氧烷(PEO-CA-Si)有机 - 无机混合膜及其在气体分离中的应用。 这些交联的PEO-CA-Si膜通过在形成膜期间在乙酸催化剂存在下通过可交联的PEO-有机三烷氧基硅烷和CA-有机三烷氧基硅烷聚合物的原位溶胶 - 凝胶共缩合制备。 通过PEO(或CA)上的羟基与有机三烷氧基硅烷上的异氰酸酯之间的反应合成可交联PEO-和CA-有机三烷氧基硅烷聚合物,以在温和条件下形成氨基甲酸酯键。 与CA膜相比,交联的PEO-CA-Si膜显示出增加的CO 2 / N 2选择性和CO 2渗透性,这表明这些膜对于气体分离如CO 2 / N 2分离是非常有希望的。

    Process for removal of oxygenates from a paraffin stream
    46.
    发明授权
    Process for removal of oxygenates from a paraffin stream 失效
    从石蜡流中除去含氧化合物的方法

    公开(公告)号:US07576248B2

    公开(公告)日:2009-08-18

    申请号:US11938454

    申请日:2007-11-12

    IPC分类号: C07C2/64 C07C7/13

    摘要: The present invention comprises a process for removal of oxygenates from a paraffin-rich or olefin-rich paraffin stream which comprises passing a feed stream, comprising one or more C10 to C15 feed paraffins or C10 to C15 olefin-rich paraffin stream and one or more oxygenates through an adsorbent bed comprising one or more adsorbents selected from silica gel, activated alumina and sodium x zeolites to remove essentially all of said oxygenates; and recovering said paraffins. A second adsorbent bed may be employed to more thoroughly remove these oxygenates.

    摘要翻译: 本发明包括从富含链烷烃或富烯烃的石蜡流中除去含氧化合物的方法,其包括使包含一种或多种C 10至C 15进料链烷烃或C 10至C 15烯烃富链烷烃流的进料流和一种或多种 氧化物通过吸附床,其包含一种或多种选自硅胶,活性氧化铝和钠x沸石的吸附剂,以除去基本上所有的含氧化合物; 并回收所述石蜡。 可以使用第二吸附剂床来更彻底地除去这些含氧化合物。

    Separation of citric acid from gluconic acid in fermentation broth using a weakly or strongly basic anionic exchange resin adsorbent
    47.
    发明授权
    Separation of citric acid from gluconic acid in fermentation broth using a weakly or strongly basic anionic exchange resin adsorbent 有权
    使用弱碱性或强碱性阴离子交换树脂吸附剂在发酵液中分离柠檬酸与葡萄糖酸

    公开(公告)号:US07439392B2

    公开(公告)日:2008-10-21

    申请号:US11757610

    申请日:2007-06-04

    IPC分类号: C07C51/42 C07C59/265

    CPC分类号: C07C51/47 C07C59/265

    摘要: Citric acid is separated from a fermentation broth containing gluconic acid by using an adsorbent comprising a water-insoluble, macroreticular or gel, strongly or weakly basic anionic exchange resin possessing quaternary or tertiary amine functional groups, said a anionic exchange resin having a cross-linked acrylic or styrene resin matrix and a desorbent comprising water or dilute sulfuric acid. The pH of the feed is maintained below the first ionization constant (pKa1) of citric acid to maintain selectivity.

    摘要翻译: 通过使用包含具有季铵或叔胺官能团的不溶于水,大网络或凝胶,强或弱碱性阴离子交换树脂的吸附剂,将柠檬酸与含有葡萄糖酸的发酵液分离,所述阴离子交换树脂具有交联 丙烯酸或苯乙烯树脂基质和包含水或稀硫酸的解吸剂。 饲料的pH值保持在柠檬酸的第一电离常数(pKa 1 H 1/2)以下以保持选择性。

    Process for removal of oxygenates from a paraffin stream
    48.
    发明授权
    Process for removal of oxygenates from a paraffin stream 有权
    从石蜡流中除去含氧化合物的方法

    公开(公告)号:US07368618B2

    公开(公告)日:2008-05-06

    申请号:US11457889

    申请日:2006-07-17

    IPC分类号: C07C5/327

    摘要: The present invention comprises a process for removal of oxygenates from a paraffin-rich or olefin-rich paraffin stream which comprises passing a feed stream, comprising one or more C10 to C15 feed paraffins or C10 to C15 olefin-rich paraffin stream and one or more oxygenates through an adsorbent bed comprising one or more adsorbents selected from silica gel, activated alumina and sodium x zeolites to remove essentially all of said oxygenates; and recovering said paraffins. A second adsorbent bed may be employed to more thoroughly remove these oxygenates.

    摘要翻译: 本发明包括从富含链烷烃或富烯烃的石蜡流中除去含氧化合物的方法,该方法包括将含有一个或多个C 10的进料流送入C 15 通过吸附床将含有一种或多种选自硅胶,活性氧化铝和吸附剂的吸附剂的烷烃或C 10向富含C 15的富烯烃链烷烃流和一种或多种含氧化合物进料, 钠x沸石以除去基本上所有的含氧化合物; 并回收所述石蜡。 可以使用第二吸附剂床来更彻底地除去这些含氧化合物。

    MIXED MATRIX ADSORBENT FOR PARA-XYLENE SEPARATION
    49.
    发明申请
    MIXED MATRIX ADSORBENT FOR PARA-XYLENE SEPARATION 有权
    用于PARA-XYLENE分离的混合基质吸附剂

    公开(公告)号:US20080076952A1

    公开(公告)日:2008-03-27

    申请号:US11534264

    申请日:2006-09-22

    IPC分类号: C07C7/12

    CPC分类号: C07C7/13 C07C15/08

    摘要: A process for separating C8 aromatics is disclosed. The process uses at least two adsorbents, and in particular a BaX zeolite and a KY zeolite, for the separation of para-xylene from a mixture of C8 aromatics.

    摘要翻译: 公开了一种用于分离C8芳族化合物的方法。 该方法使用至少两种吸附剂,特别是BaX沸石和KY沸石,用于从C8芳族化合物的混合物中分离对二甲苯。

    Adsorptive removal of carbonyl impurities from oxygenated organic liquids
    50.
    发明授权
    Adsorptive removal of carbonyl impurities from oxygenated organic liquids 失效
    从含氧有机液体中吸附去除羰基杂质

    公开(公告)号:US06346645B1

    公开(公告)日:2002-02-12

    申请号:US09551642

    申请日:2000-04-18

    IPC分类号: C07C5112

    CPC分类号: C07C51/12 C07C51/48 C07C53/08

    摘要: Carbonyl compounds (e.g. acetone and acetaldehyde) are often present as impurities in oxygenated organic liquids such as acetic acid made by the carbonylation of methanol or in phenol produced by the oxidation of cumene. These impurities can render petrochemical products unsuitable for long-term storage or otherwise adversely affect downstream processing operations. It has now been found that detrimental carbonyl impurities can be easily removed from oxygenated organic liquids by contact with resins having amine functional groups.

    摘要翻译: 羰基化合物(例如丙酮和乙醛)通常作为杂质存在于氧化的有机液体中,例如通过羰基化甲醇或通过异丙苯的氧化产生的苯酚制得的乙酸。 这些杂质可能导致石化产品不适合长期储存或以其他方式不利地影响下游加工操作。 现在已经发现,通过与具有胺官能团的树脂接触,可以容易地从有氧氧化有机液体中除去有害的羰基杂质。