发明授权
- 专利标题: Method of converting amine hydrohalide into free amine
- 专利标题(中): 将胺氢卤化物转化为游离胺的方法
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申请号: US914603申请日: 1997-08-18
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公开(公告)号: US5906722A公开(公告)日: 1999-05-25
- 发明人: Peter C. Foller , David G. Roberts , Robert H. Tang
- 申请人: Peter C. Foller , David G. Roberts , Robert H. Tang
- 申请人地址: PA Pittsburgh
- 专利权人: PPG Industries, Inc.
- 当前专利权人: PPG Industries, Inc.
- 当前专利权人地址: PA Pittsburgh
- 主分类号: B01D61/44
- IPC分类号: B01D61/44 ; C02F1/469 ; C25B3/00 ; C25B9/08 ; C25B7/00 ; C25B1/00 ; C25B9/00
摘要:
Describes a method of electrochemically converting amine hydrohalide, e.g., ethyleneamine hydrochloride, into free amine, e.g., free ethyleneamine. A three compartment electrolytic cell is provided having (1) a catholyte compartment containing a cathode assembly comprising a cathode and an anion exchange membrane, (2) an anode compartment containing an anode assembly comprising either (a) a hydrogen consuming gas diffusion anode and a current collecting electrode or (b) a hydrogen consuming gas diffusion anode which is fixedly held between a hydraulic barrier and a current collecting electrode, and (3) an intermediate compartment separated from the catholyte and anode compartments by the anion exchange membrane and either (i) the hydrogen consuming gas diffusion anode or (ii) the hydraulic barrier respectively. An aqueous solution of amine hydrohalide is charged to the catholyte compartment, while hydrogen gas is charged to the anode compartment and an aqueous conductive electrolyte solution is charged to the intermediate compartment. Direct current is passed through the electrolytic cell and an aqueous solution comprising free amine is removed from the catholyte compartment.
公开/授权文献
- USD309575S Clock 公开/授权日:1990-07-31
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