公开(公告)号：US5478953A

公开(公告)日：1995-12-26

申请号：US333783

申请日：1994-11-03

申请人： Michael J. Gula ,  Richard A. Bartsch

发明人： Michael J. Gula ,  Richard A. Bartsch

IPC分类号： C07D323/00

CPC分类号： C07D323/00

摘要： A process for preparing 4,4'(5')-[di-t-butyldicyclohexano]-18-crown-6 containing an enhanced amount of an isomer that extracts strontium ions from aqueous solution is disclosed. According to the process, an anhydrous reaction mixture is prepared containing 4,4'(5')-[di-t-butyldibenzo]-18-crown-6 as substrate dissolved in a C.sub.2 -C.sub.6 alcohol-containing solvent that can also contain benzene, toluene or xylene, a C.sub.2 -C.sub.6 carboxylic acid or anhydride and a 5 percent of rhodium on alumina particle catalyst. The resulting reaction medium is hydrogenated at about 200-1000 psi, at a temperature of about 35.degree.-120.degree. C. for a time period sufficient to reduce at least 90 percent of the substrate.

摘要翻译： 公开了一种制备含有增加量的从水溶液中提取锶离子的异构体的4,4'（5'） - [二叔丁基二环己基] -18-冠-6的方法。 根据该方法，制备含有4,4'（5'） - [二叔丁基二苯并] -18-冠-6作为底物的无水反应混合物，所述底物溶于含C2-C6醇的溶剂中，所述溶剂也可含有 苯，甲苯或二甲苯，C 2 -C 6羧酸或酸酐和5％的氧化铀颗粒催化剂上的铑。 所得反应介质在约200-1000psi，约35-120℃的温度下氢化一段足以减少至少90％底物的时间。

公开(公告)号：US06488859B2

公开(公告)日：2002-12-03

申请号：US09850474

申请日：2001-05-07

申请人： Spiro Alexandratos ,  Christopher A. Shelley ,  E. Philip Horwitz ,  Renato Chiarizia ,  Michael J. Gula ,  Sui Xue ,  James T. Harvey

发明人： Spiro Alexandratos ,  Christopher A. Shelley ,  E. Philip Horwitz ,  Renato Chiarizia ,  Michael J. Gula ,  Sui Xue ,  James T. Harvey

IPC分类号： C02F142

CPC分类号： C02F1/42 ,  B01J39/05 ,  B01J39/20 ,  B01J49/06 ,  C08J5/20

摘要： A cross-linked water-insoluble ion exchange resin comprised of polymerized monomers having a phenyl ring is disclosed. A contemplated resin contains (i) polymerized phenyl ring-containing monomers having a phosphonic acid ligand linked to the phenyl ring, (ii) about 2 to about 5 millimoles per gram (mmol/g) of phosphorus as phosphonic acid ligands, and (iii) a sufficient amount of a sulfonic acid ligand such that the ratio of mmol/g of phosphonic acid to mmol/g sulfonic acid is up to 3:1. A process for removing polyvalent metal cations from aqueous solution, and a process for removing iron(III) cations from acidic copper(II) cation-containing solutions that utilize the contemplated resin or other resins are disclosed.

摘要翻译： 公开了由具有苯环的聚合单体组成的交联的水不溶性离子交换树脂。 预期的树脂包含（i）具有与苯环连接的膦酸配体的聚合的含苯基的单体，（ii）约2至约5毫摩尔/克（mmol / g）磷作为膦酸配体，和（iii ）足够量的磺酸配体，使得膦酸与mmol / g磺酸的mmol / g的比例高达3:1。 公开了一种从水溶液中除去多价金属阳离子的方法，以及从使用预期的树脂或其它树脂的酸性含铜（II）阳离子的溶液中除去铁（III）阳离子的方法。

公开(公告)号：US5582737A

公开(公告)日：1996-12-10

申请号：US554472

申请日：1995-11-07

申请人： Michael J. Gula ,  David B. Dreisinger ,  E. Philip Horwitz

发明人： Michael J. Gula ,  David B. Dreisinger ,  E. Philip Horwitz

IPC分类号： B01J39/12 ,  C02F1/42

CPC分类号： B01J39/12 ,  B01J49/0008 ,  Y10S204/13

摘要： An ion exchange separation, recovery and regeneration process for the control of iron has been developed to replace the conventional bleed stream process used in copper electrowinning. The process minimizes the loss of cobalt from the electrowinning circuit and strips the iron into a sulfate-based solution suitable for leach solution makeup. In addition, this process can effect a lowering of the total iron concentration in the electrolyte circuit with an associated increase in current efficiency.

摘要翻译： 已经开发了用于控制铁的离子交换分离，回收和再生过程以替代用于铜电解提取的常规渗流过程。 该方法使得电解冶金电路中钴的损失最小化，并将铁分解成适用于浸出液组合的基于硫酸盐的溶液。 此外，该方法可以相应地提高电流效率来降低电解质电路中的总铁浓度。