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11 条记录 (耗时 0.032 秒)

    Bipolar membrane electrodialysis of multivalent metal salts whose corresponding base is insoluble
    3.
    发明授权
    Bipolar membrane electrodialysis of multivalent metal salts whose corresponding base is insoluble 失效

    公开(公告)号：US06495013B2

    公开(公告)日：2002-12-17

    申请号：US09901978

    申请日：2001-07-10

    申请人： Duane J. Mazur ,  J. David Genders ,  Dan M. Hartsough

    发明人： Duane J. Mazur ,  J. David Genders ,  Dan M. Hartsough

    IPC分类号： B01D6144

    CPC分类号： B01D61/445 ,  B01D61/52

    摘要： Bipolar membrane electrodialysis methods for salt splitting polyvalent metal salts, where the metal cation can form substantially insoluble precipitates in the presence of hydroxyl ions can now be used in recovering acid and base values from a salt streams without precipitates fouling cell operation and causing shutdown. The introduction of an acid to the chamber where metal hydroxides would form inhibits their development or neutralizes formed solids, allowing salt splitting to continue. Salt splitting methods of the invention performed with a three compartment bipolar electrodialysis cell are useful in producing concentrated and purified acid forms, such as 2-keto-L-gluconic acid, H(KLG), a key intermediate in the production of ascorbic acid.

    Process for the production of alkaline earth hydroxide
    4.
    发明授权
    Process for the production of alkaline earth hydroxide 有权
    生产碱土金属氢氧化物的方法

    公开(公告)号：US06375825B1

    公开(公告)日：2002-04-23

    申请号：US09428738

    申请日：1999-10-28

    申请人： Lloyd Ballard Mauldin ,  Charles Adams, Jr. ,  Donald R. Randolph ,  Duane J. Mazur ,  J. David Genders ,  Dennis M. Chai

    发明人： Lloyd Ballard Mauldin ,  Charles Adams, Jr. ,  Donald R. Randolph ,  Duane J. Mazur ,  J. David Genders ,  Dennis M. Chai

    IPC分类号： C25B120

    CPC分类号： C25B1/20

    摘要： A process for the continuous production of alkaline earth metal hydroxide by continuously providing an aqueous alkaline earth metal halide solution to the anode compartment and an aqueous alkaline earth metal hydroxide solution or water to the cathode compartment of an electrolytic cell in which an anode and a cathode are maintained in separate anode and cathode compartments, respectively, by a stable, hydrated, cation selective, hydraulically impermeable, electrically conductive membrane interposed between said anode and said cathode; electrolyzing the alkaline earth metal halide solution; and continuously removing alkaline earth metal hydroxide solution and hydrogen from the cathode compartment and halogen from the anode compartment. The membrane is a film of a fluorinated polymer with pendant side chains containing sulfonyl groups present as ion exchange sites and attached to carbon atoms which have at least one fluorine atom attached thereto. In another embodiment the membrane is a laminate of two such polymers differing in equivalent weight.

    摘要翻译： 一种连续生产碱土金属氢氧化物的方法，其通过连续向阳极室提供碱土金属卤化物水溶液和碱土金属氢氧化物水溶液或水至阴极室，其中阳极和阴极 分别通过介于所述阳极和所述阴极之间的稳定的，水合的阳离子选择性的液压不可渗透的导电膜保持在单独的阳极和阴极室中; 电解碱土金属卤化物溶液; 并从阴极室和阳极室连续除去碱土金属氢氧化物溶液和氢气。 膜是具有含有磺酰基的侧链的氟化聚合物的膜，该磺酰基作为离子交换位置存在，并与附着有至少一个氟原子的碳原子连接。 在另一个实施方案中，膜是两种不同当量重量的聚合物的层压体。

    Processes for decontaminating polluted substrates
    8.
    发明授权
    Processes for decontaminating polluted substrates 失效
    净化污染底物的方法

    公开(公告)号：US5110364A

    公开(公告)日：1992-05-05

    申请号：US385799

    申请日：1989-07-27

    申请人： Duane J. Mazur ,  Norman L. Weinberg ,  Albert E. Abel

    发明人： Duane J. Mazur ,  Norman L. Weinberg ,  Albert E. Abel

    IPC分类号： A62D3/00 ,  A62D101/02 ,  A62D101/04 ,  A62D101/22 ,  B09C1/02

    CPC分类号： B09C1/02 ,  A62D2101/02 ,  A62D2101/04 ,  A62D2101/22 ,  Y02P20/582

    摘要： Substrates polluted with toxic substances are treated in-situ with solvated electrons prepared chemically or electrochemically. The process is useful in treating porous and nonporous substrates, such as earth, clay, sand, soils, concrete, asphalt, wood, brick, block and other masonry surfaces, including liquids such dielectric fluids contaminated with halogenated hydrocarbons without the usual separation procedures to provide substrates suitable for recycle having

    摘要翻译： 用有毒物质污染的基质用化学或电化学制备的溶剂化电子原位处理。 该方法可用于处理多孔和无孔基材，例如土，粘土，沙土，土壤，混凝土，沥青，木材，砖，块和其他砌体表面，包括液体如卤代烃污染的介质流体，无需通常的分离程序 提供适合循环使用的残留物<1 ppm污染物的底物。

    High yield methods for electrochemical preparation of cysteine and analogues
    9.
    发明授权
    High yield methods for electrochemical preparation of cysteine and analogues 失效
    用于电化学制备半胱氨酸和类似物的高产率方法

    公开(公告)号：US5106463A

    公开(公告)日：1992-04-21

    申请号：US232000

    申请日：1988-08-15

    申请人： John D. Genders ,  Norman L. Weinberg ,  Duane J. Mazur

    发明人： John D. Genders ,  Norman L. Weinberg ,  Duane J. Mazur

    IPC分类号： C25B3/04

    CPC分类号： C25B3/04

    摘要： Amino acid free bases are prepared electrochemically without production of intermediate acid salts. Amino acids having reducible disulfide linkages and at least one basic nitrogen group are reduced at a high surface area, noncontaminating cathode to provide a current density of at least 50 mA/cm.sup.2, product yield of at least 90% and an operating current efficiency of at least 90%.

    摘要翻译： 氨基酸游离碱电化学制备而不生产中间酸盐。 具有可还原的二硫键和至少一个碱性氮基团的氨基酸在高表面积下被还原，不污染阴极，以提供至少50mA / cm 2的电流密度，至少90％的产物产率和在 至少90％。