公开(公告)号：WO1995017950A1

公开(公告)日：1995-07-06

申请号：PCT/DK1994000484

申请日：1994-12-22

申请人： NOVO NORDISK A/S ,  LAUSTSEN, Mads, Aage

发明人： NOVO NORDISK A/S

IPC分类号： B01D61/44

CPC分类号： B01D61/44 ,  B01D61/42 ,  B01D61/425 ,  C07K1/34

摘要： A charged first molecular species is separated from a second molecular species by selectively passing one of the species through a separation membrane under the influence of an electrical potential. The separated species is maintained within a dialysate stream by retention membrane (or an electrode surface) adjacent the separation membrane. In a first embodiment, the charged species migrates across the separation membrane under the influence of the electric field, while a neutral or oppositely-charged species is maintained within the aqueous media. In the second embodiment, the charged species is maintained with the load channel, while a neutral species is passed into the dialysate chamber under the influence of a differential pressure.

摘要翻译： 带电的第一分子物质通过在电势的影响下选择性地使物质之一选择性地通过分离膜而与第二分子物质分离。 分离的物质通过邻近分离膜的保留膜（或电极表面）保持在透析液流中。 在第一实施方案中，带电物质在电场的影响下迁移穿过分离膜，而在水性介质中保持中性或带相反电荷的物质。 在第二实施例中，带电荷的物质通过负载通道保持，而中性物质在压差的影响下进入透析液室。

公开(公告)号：WO1993020012A3

公开(公告)日：1993-10-14

申请号：PCT/GB1993000675

申请日：1993-03-31

申请人： AQUAMIN COMPANY LTD. ,  MEDVEDEV, Igor N. ,  SCHOGENOV, Klim A.

发明人： AQUAMIN COMPANY LTD.

IPC分类号： B01D61/44

公开(公告)号：WO1993011860A1

公开(公告)日：1993-06-24

申请号：PCT/US1991009191

申请日：1991-12-19

申请人： VAUGHAN, Daniel, J.

IPC分类号： B01D61/44

CPC分类号： B01D61/44 ,  C01D1/38 ,  C23F1/46

摘要： A multivalent metal hydroxide is separated as a solid from an alkali hydroxide or from another multivalent metal hydroxide in an electrodialytic cell. The separation process is regulated by varying the pH or concentration of alkali hydroxide in a feed compartment electrolyte by matching the rate alkali cations are fed and removed from the electrolyte. As a result, one multivalent metal cation separates as a solid in the feed electrolyte or one multivalent cation separates as a solid and one multivalent cation is ionically mobile and electrotransportable from the electrolyte. This electrodialytic method can be used to continuously regenerate sodium hydroxide etchants containing dissolved aluminum, when the dissolved aluminum is removed from the etchant as a solid and the sodium hydroxide is returned as a solution for etching.

摘要翻译： 多价金属氢氧化物作为固体从碱性氢氧化物或电渗析池中的另一种多价金属氢氧化物中分离出来。 分离过程通过改变进料室电解质中碱金属氢氧化物的pH或浓度来调节，其通过匹配从电解质中进料和除去的碱性阳离子的速率。 结果，一种多价金属阳离子作为固体在进料电解质中分离，或者一个多价阳离子作为固体分离，并且一个多价阳离子离子可移动并且可从电解质中电移动。 当溶解的铝作为固体从蚀刻剂中除去并且氢氧化钠作为蚀刻溶液返回时，该电渗析方法可用于连续再生含有溶解的铝的氢氧化钠蚀刻剂。

公开(公告)号：WO1992011922A1

公开(公告)日：1992-07-23

申请号：PCT/US1991000103

申请日：1991-01-09

申请人： VAUGHAN, Daniel, J.

IPC分类号： B01D61/44

CPC分类号： B01D61/44

摘要： Multivalent metal cations in aqueous solution are electrotransported efficiently and with high capacity through cation permeable membranes into an aqueous solution containing a sulfonate ion which makes possible a simple electrodialytic process for conversion of all salts of multivalent metal cations into the respective acids or halogens of the anions of the salts and into water soluble salts or water insoluble salts or ionically immobile compounds of the multivalent metal cations. The use of a sulfonate ion the acid of which in a one normal solution would have a pH no greater than three (3) prevents fouling of the membrane and makes electrodialytic conversion of especially salts of barium, strontium, calcium and lead simple, efficient and with high capacity without the formation of undesirable products of electrolysis at the cell anode or cathode.

摘要翻译： 水溶液中的多价金属阳离子通过阳离子渗透膜有效地运输到含有磺酸根离子的水溶液中，这使得可能用简单的电渗析方法将所有的多价金属阳离子盐转化成阴离子的各种酸或卤素 的盐和多价金属阳离子的水溶性盐或水不溶性盐或离子固定化合物。 使用一种正常溶液中酸的磺酸根离子，其pH值不大于3（3）可以防止膜的结垢，特别是钡，锶，钙和铅的电渗析转化简单，高效， 具有高容量而不在电池阳极或阴极形成不需要的电解产物。

公开(公告)号：WO1992007648A2

公开(公告)日：1992-05-14

申请号：PCT/US1991007960

申请日：1991-10-28

申请人： REILLY INDUSTRIES, INC.

发明人： REILLY INDUSTRIES, INC. ,  TOOMEY, Joseph, E.

IPC分类号： B01D61/44

CPC分类号： C25B3/00 ,  B01D61/44 ,  C07C29/88 ,  C07C51/02 ,  Y02A20/134 ,  C07C31/22 ,  C07C31/245

摘要： A preferred electrochemical process for producing an alcohol or carboxylic acid from a corresponding metal salt while also recovering metal cation residues is described. The preferred process does not require a three-compartment desalination cell but rather can be performed in a standard two-compartment cell divided by a cation-permeable membrane. The process comprises the step of electrolyzing an aqueous medium containing the metal salt in the anolyte of the cell to thereby yield alcohol or carboxylic acid in the anolyte and pass the metal cation into the catholyte. In one particularly preferred mode, the process provides a highly effective recovery of valuable materials from byproduct streams of base-catalyzed syntheses of polyols such as such as trimethylolpropane or pentaerythritol from aldehydes, and in another provides an efficient recovery of phenol.

公开(公告)号：WO9012637A3

公开(公告)日：1991-01-10

申请号：PCT/CA9000116

申请日：1990-04-09

申请人： PULP PAPER RES INST

发明人： PALEOLOGOU MICHAEL ,  BERRY RICHARD M

IPC分类号： B01D61/44 ,  C01B15/043 ,  D21C11/00 ,  B01D ,  C01B ,  C01D ,  C01D1/38 ,  D21C ,  D21C9/16

CPC分类号： C01B15/043 ,  B01D61/445 ,  D21C11/005

摘要： A process for dealkalization or acidification of aqueous salt solutions or for the splitting of the salt of such solutions employs a water splitting system of bipolar membranes (3) in conjunction with ion selective membranes (2); a two-compartment cell employs cation permselective membranes (2) to define acid and base compartments with the bipolar membranes (3), and a three compartment cell employs anion permselective and cation permselective membranes to define with the bipolar membrane salt, acid and base compartments; the process has particular applicability to the dealkalization of a monosodium peroxide solution containing sodium hydroxide produced in a hydrogen peroxide generator.

公开(公告)号：WO87007624A1

公开(公告)日：1987-12-17

申请号：PCT/US1987001313

申请日：1987-12-17

IPC分类号： B01D61/46 ,  B01D61/44 ,  B01D69/12 ,  B01D71/82 ,  B01J47/12 ,  C08J5/22 ,  B01D13/02

CPC分类号： C08J5/2275 ,  B01D61/445 ,  C08J2327/00 ,  C08J2439/02 ,  Y10T428/31935

摘要： Bipolar membranes which exhibit high permselectivity, good mechanical strength, ability to operate at high current density, low potential drop and long-term stability. Essential to the production of bipolar membranes with these properties is the construction of the interface layer, which includes a matrix material containing quaternary and non-quaternary amine groups and having dispersed therein a cation exchange resin. A number of additional important characteristics are disclosed directed to the construction of the anion and cation layers of the bipolar membranes. A preferred method for forming bipolar membranes by casting layers on top of one another is also disclosed.

摘要翻译： 具有高选择性，良好的机械强度，在高电流密度下操作的能力，低电位降和长期稳定性的双极膜。 具有这些性质的双极性膜的生产的关键是界面层的构造，其包括含有季铵和非季胺基团的基质材料，并且在其中分散有阳离子交换树脂。 公开了许多另外的重要特征，涉及双极性膜的阴离子层和阳离子层的构造。 还公开了通过彼此顶部的浇铸层形成双极膜的优选方法。

公开(公告)号：WO87007623A1

公开(公告)日：1987-12-17

申请号：PCT/US1987000691

申请日：1987-12-17

IPC分类号： C08J5/22 ,  B01D61/44 ,  B01D71/28 ,  B01D71/82 ,  B01J47/12

CPC分类号： B01D61/44 ,  B01D61/445 ,  C08J5/2231 ,  C08J2325/04

摘要： Permselective membranes which comprise a layer comprising polystyrene, at least a portion of which is sulfonated, and between about 10 wt. % and about 35 wt. % monovinyl arene-hydrogenated diene block copolymer, at least a portion of which is sulfonated. The membranes exhibit a resistance of less than about 8 OMEGA-cm2 in 7 wt. % Na2SO4 and an ion exchange capacity of between about 1.0 meq/g and about 1.6 meq/g. Monopolar and bipolar membranes comprising the layer are disclosed. A preferred process for forming the membranes comprises the steps of sulfonating polystyrene and monovinyl arene-hydrogenated diene block copolymer, forming a mixture of the materials in a solvent, forming a layer of the mixture and drying the layer to form at least a portion of the membrane.

公开(公告)号：WO2022239864A1

公开(公告)日：2022-11-17

申请号：PCT/JP2022/020226

申请日：2022-05-13

申请人： 国立大学法人弘前大学

发明人： 佐々木　一哉 ,  新村　潔人

IPC分类号： B01D61/44 ,  B01D61/46 ,  C25B7/00 ,  C02F1/469 ,  C25B13/04 ,  C25B13/07 ,  C25B9/00 ,  C25B15/023 ,  C25B15/08 ,  C25B1/16

摘要： リチウム回収装置１０は、リチウムイオン伝導性電解質膜２で供給槽１１と回収槽１２とに仕切られた処理槽１を備え、供給槽１１内のＬｉ+とそれ以外の金属イオンＭn+を含有する水溶液ＳＷから、Ｌｉ+を選択的に回収槽１２内の水溶液ＡＳへ移動させるために、電解質膜２の両面にそれぞれ接触して設けられた多孔質構造の電極３１，３２間に供給槽１１側の電極３１を正極として接続した第１電源５１と、第１電源５１の負極に直列に接続すると共に回収槽１２内に電解質膜２から離間して設けられた副電極３３に負極を接続した第２電源５２を備え、第２電源５２は、正極から電極３２に電流が流れるように電圧を印加する。

公开(公告)号：WO2022223746A1

公开(公告)日：2022-10-27

申请号：PCT/EP2022/060640

申请日：2022-04-21

申请人： NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO

发明人： GOETHEER, Earl ,  SÁNCHEZ MARTÍNEZ, Carlos ,  FEENSTRA, Maartje, Sietske

IPC分类号： C07C45/41 ,  C07C47/04 ,  C07C51/02 ,  C07C51/41 ,  C07C53/02 ,  C07C53/06 ,  B01D53/14 ,  B01D61/44

摘要： Process and modular system for producing formic acid from carbon dioxide. The process comprises (a) a carbon capture step wherein a source of carbon dioxide is contacted with an alkaline solution to obtain a solution comprising carbonate and/or bicarbonate; optionally (b) subjecting said solution to alkaline water electrolysis; (c) subjecting the solution comprising carbonate and/or bicarbonate to a hydrogenation step to obtain a solution comprising formate; and (d) subjecting the solution comprising formate obtained in step (c) to bipolar membrane electrodialysis and recycling the recovered alkaline solution obtained in step (d) back to step (a). The concentrated formic acid solution obtained from step (d) may be subjected to a hydrogenation step to obtain a concentrated formaldehyde solution.