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1. 发明授权

US4447405A Removal of bromides from arsenic acid solution 失效
标题翻译：从砷酸溶液中去除溴化物
公开(公告)号：US4447405A
公开(公告)日：1984-05-08
申请号：US411817
申请日：1982-08-26
申请人： Byung K. Ahn , Kenneth A. Morris
发明人： Byung K. Ahn , Kenneth A. Morris
IPC分类号： C01B7/09 , C01G28/00 , C01B29/00
CPC分类号： C01G28/005 , C01B7/096
摘要： Bromide ions when used as the redox intermediates in the oxidation of arsenic (III) oxide to arsenic (V) acid can be removed from a solution having a major proportion of arsenic acid by treatment with an oxidant selected from H.sub.2 O.sub.2, O.sub.3 or Cr(VI) to oxidize the bromide to bromine followed by purging with air, nitrogen or other inert gas to sweep out the resultant bromine. The bromine can be recovered and recycled to a fresh batch of arsenic (III) oxide.
摘要翻译：当氧化砷（III）氧化为砷（V）酸时，用作氧化还原中间体的溴离子可以通过用选自H 2 O 2，O 3或Cr（VI）的氧化剂处理从具有主要比例的砷的溶液中除去）将溴化物氧化成溴，然后用空气，氮气或其它惰性气体吹扫，以清除所得的溴。可以回收溴并再循环至新鲜的氧化砷（III）。

2. 发明授权

US4066519A Cell and process for electrolyzing aqueous solutions using a porous metal separator 失效
标题翻译：使用多孔金属分离器电解水溶液的细胞和方法
公开(公告)号：US4066519A
公开(公告)日：1978-01-03
申请号：US782118
申请日：1977-03-28
申请人： Igor V. Kadija , Byung K. Ahn
发明人： Igor V. Kadija , Byung K. Ahn
IPC分类号： C25B1/46 , C25B13/04 , C25B1/16 , C25B1/26 , C25B9/00
CPC分类号： C25B1/46 , C25B13/04
摘要： Electrolysis of alkali metal chloride solutions to produce chlorine and alkali metal hydroxides is accomplished in a cell comprising an anode compartment, a cathode compartment, a cation permeable divider separating the anode compartment from the cathode compartment, where the anode compartment contains a porous metal separator. The porous metal separator is comprised of a porous plate of, for example, a valve metal having a porosity of from about 30 to about 75 percent and an air flow value of from about 0.1 to about 60 CFM. The anode separator is positioned in the anode compartment so it is spaced apart from the cation permeable divider and from the anode. During electrolysis, an alkaline brine zone is formed between the porous metal separator and the cation permeable divider which increases the service life of the cation permeable divider. In addition, the porous metal separator provides improved chlorine gas separation properties.

3. 发明授权

US4372828A Process for preparing arsenic acid 失效
标题翻译：砷酸制备方法
公开(公告)号：US4372828A
公开(公告)日：1983-02-08
申请号：US347919
申请日：1982-02-11
申请人： Byung K. Ahn
发明人： Byung K. Ahn
IPC分类号： C25B1/22 , C25B15/00
CPC分类号： C25B15/00 , C25B1/22
摘要： A pulsating potential is applied to the anode in the electrolytic oxidation of arsenic trioxide to arsenic acid to reactivate the anode and increase the current density.
摘要翻译：在将三氧化二砷电解氧化成砷酸的阳极上施加脉动电位，使阳极重新活化并提高电流密度。

4. 再颁专利

USRE30864E Process for electrolysis in a membrane cell employing pressure actuated uniform spacing 失效
标题翻译：使用压力致动均匀间隔的膜电池中的电解方法
公开(公告)号：USRE30864E
公开(公告)日：1982-02-09
申请号：US64651
申请日：1979-08-07
申请人： David D. Justice , Byung K. Ahn , Ronald L. Dotson
发明人： David D. Justice , Byung K. Ahn , Ronald L. Dotson
IPC分类号： C25B1/46 , C25B9/08
CPC分类号： C25B9/08 , C25B1/46
摘要： An electrolytic cell employing a hydraulically impermeable membrane having a spacing means interposed between the anode and the membrane, is operated by providing a positive pressure differential between the cathode compartment and the anode compartment. The pressure differential is sufficient to maintain contact between the spacer and the membrane to provide uniform spacing between the anode and the membrane. In addition, this process provides sufficient spacing between the membrane and the cathode to provide efficient release of any gas formed and to prevent gas blinding at the cathode. Employing the positive pressure differential enables the cell to be operated at reduced energy costs when producing, for example, concentrated solutions of sodium hydroxide by careful control of the spacing between the membrane and the electrodes.

5. 发明授权

US4769230A Process for preparation of arsenic acid 失效
标题翻译：砷酸的制备方法
公开(公告)号：US4769230A
公开(公告)日：1988-09-06
申请号：US404614
申请日：1982-08-02
申请人： Nicholas P. Greco , Byung K. Ahn , John J. Kozak
发明人： Nicholas P. Greco , Byung K. Ahn , John J. Kozak
IPC分类号： C01G28/00
CPC分类号： C01G28/005
摘要： Arsenic acid is formed from arsenous acid and water under oxygen pressure with catalytic amounts of nitric acid and a halide whereby the nitric oxide by-product is regenerated to nitric acid for contact with fresh arsenous acid.
摘要翻译：在亚硝酸和氧气压力下用催化量的硝酸和卤化物形成砷酸，由此将一氧化氮副产物再生成硝酸以与新鲜的砷酸接触。

6. 发明授权

US4292159A Cell having in situ reduction of electrode overvoltage 失效
标题翻译：具有原位还原电极过电压的电池
公开(公告)号：US4292159A
公开(公告)日：1981-09-29
申请号：US939942
申请日：1978-09-06
申请人： Han C. Kuo , Byung K. Ahn , Ronald L. Dotson , Kenneth E. Woodard, Jr.
发明人： Han C. Kuo , Byung K. Ahn , Ronald L. Dotson , Kenneth E. Woodard, Jr.
IPC分类号： C25B1/46 , C25B11/04 , C25B15/08 , C25B1/16 , C25B9/00
CPC分类号： C25B1/46 , C25B11/0442
摘要： A method and apparatus for in situ reduction of cathode overvoltage in electrolytic cells. The method involves introducing low overvoltage or noble metal ions into the catholyte solution and plating those ions on the cathode in situ. The apparatus includes a low overvoltage or noble metal ion generating device for introducing low overvoltage or noble metal ions into the cathode solution so as to plate them in situ on the cathode during or prior to cell operation.
摘要翻译：一种用于原位还原电解槽中阴极过电压的方法和装置。该方法包括将低过电压或贵金属离子引入阴极电解液中，并将那些离子原位镀在阴极上。该装置包括用于将低过电压或贵金属离子引入阴极溶液中的低过电压或贵金属离子产生装置，以在电池操作期间或之前在阴极上原位放置它们。

7. 发明授权

US4105514A Process for electrolysis in a membrane cell employing pressure actuated uniform spacing 失效
标题翻译：在使用压力均匀平衡的膜细胞中电解的方法
公开(公告)号：US4105514A
公开(公告)日：1978-08-08
申请号：US810135
申请日：1977-06-27
申请人： David D. Justice , Byung K. Ahn , Ronald L. Dotson
发明人： David D. Justice , Byung K. Ahn , Ronald L. Dotson
IPC分类号： C25B1/46 , C25B9/00 , C25B9/08 , C25B9/18 , C25B1/16 , C25B1/26 , C25B13/00
CPC分类号： C25B9/08 , C25B1/46
摘要： An electrolytic cell employing a hydraulically impermeable membrane having a spacing means interposed between the anode and the membrane, is operated by providing a positive pressure differential between the cathode compartment and the anode compartment. The pressure differential is sufficient to maintain contact between the spacer and the membrane to provide uniform spacing between the anode and the membrane. In addition, this process provides sufficient spacing between the membrane and the cathode to provide efficient release of any gas formed and to prevent gas blinding at the cathode. Employing the positive pressure differential enables the cell to be operated at reduced energy costs when producing, for example, concentrated solutions of sodium hydroxide by careful control of the spacing between the membrane and the electrodes.

8. 发明授权

US4163698A In situ reference electrode for diaphragm cells 失效
标题翻译：隔膜电池原位参比电极
公开(公告)号：US4163698A
公开(公告)日：1979-08-07
申请号：US908434
申请日：1978-05-22
申请人： Han C. Kuo , George W. Geren , Thomas E. Corvin , Byung K. Ahn
发明人： Han C. Kuo , George W. Geren , Thomas E. Corvin , Byung K. Ahn
IPC分类号： G01N27/30 , G01N27/416
CPC分类号： G01N27/4166
摘要： A method and apparatus for measuring the overvoltage of a gas producing electrode of a chlor-alkali diaphragm cell is disclosed. The method includes positioning an exposed metal tip of a reference electrode from about 0.2 to about 1.0 mm away from the gas producing electrode within a stream of gas produced by the gas producing electrode. The apparatus includes the reference electrode so positioned. Platinized platinum wire and a RuO.sub.2 --TiO.sub.2 coated Ti wire are preferred as the reference electrodes for cathode and anode, respectively.
摘要翻译：公开了一种用于测量氯碱隔膜电池的气体产生电极的过电压的方法和装置。该方法包括在由气体产生电极产生的气体流内将参考电极的暴露的金属尖端定位在距离气体产生电极约0.2至约1.0mm处。该装置包括如此定位的参考电极。优选铂铂丝和RuO 2 -TiO 2涂覆的Ti线作为阴极和阳极的参考电极。

9. 发明授权

US4160704A In situ reduction of electrode overvoltage 失效
标题翻译：原位还原电极过电压
公开(公告)号：US4160704A
公开(公告)日：1979-07-10
申请号：US853360
申请日：1977-11-21
申请人： Han C. Kuo , Byung K. Ahn , Ronald L. Dotson , Kenneth E. Woodard, Jr.
发明人： Han C. Kuo , Byung K. Ahn , Ronald L. Dotson , Kenneth E. Woodard, Jr.
IPC分类号： C25B1/46 , C25B11/08 , C25B11/04 , C25D5/02 , C25D5/34
CPC分类号： C25B1/46
摘要： A method and apparatus for in situ reduction of cathode overvoltage in electrolytic cells. The method involves introducing low overvoltage or noble metal ions into the catholyte solution and plating those ions on the cathode in situ. The apparatus includes a low overvoltage or noble metal ion generating device for introducing low overvoltage or noble metal ions into the cathode solution so as to plate them in situ on the cathode during or prior to cell operation.
摘要翻译：一种用于原位还原电解槽中阴极过电压的方法和装置。该方法包括将低过电压或贵金属离子引入阴极电解液中，并将那些离子原位镀在阴极上。该装置包括用于将低过电压或贵金属离子引入阴极溶液中的低过电压或贵金属离子产生装置，以在电池操作期间或之前在阴极上原位放置它们。

10. 发明授权

US4140615A Cell and process for electrolyzing aqueous solutions using a porous anode separator 失效
标题翻译：使用多孔阳极分离器电解水溶液的电池和方法
公开(公告)号：US4140615A
公开(公告)日：1979-02-20
申请号：US782117
申请日：1977-03-28
申请人： Igor V. Kadija , Byung K. Ahn
发明人： Igor V. Kadija , Byung K. Ahn
IPC分类号： C25B1/46 , C25B9/08 , C25B11/04 , C25B9/00
CPC分类号： C25B11/0478 , C25B1/46 , C25B9/08
摘要： Electrolysis of alkali metal chloride solutions to produce chlorine and alkali metal hydroxides is accomplished in a cell comprising an anode compartment, a cathode compartment, a cation permeable divider separating the anode compartment from the cathode compartment, where the anode compartment contains an anode separator. The anode separator is comprised of a porous plate of a valve metal having an electrochemically active coating on the face, and an electrochemically non-active barrier layer on the back and a portion of the interior. The anode separator is positioned in the anode compartment so that the back of the anode separator is spaced apart from the cation permeable divider. An alkaline brine zone is formed between the anode separator and the cation permeable divider which increases the service life of the cation permeable divider. In addition, the anode separator provides improved chlorine gas separation properties, increased service life for the electroconductive coating on the face, and enables the cell to operate with a reduced cell voltage.
摘要翻译：电解碱金属氯化物溶液以产生氯和碱金属氢氧化物在包括阳极室，阴极隔室，将阳极室与阴极隔室分隔开的阳离子可渗透隔板的电池中完成，其中阳极室包含阳极隔板。阳极分离器包括具有在表面上具有电化学活性涂层的阀金属的多孔板，以及背面和内部的一部分上的电化学非活性阻挡层。阳极分离器位于阳极室中，使得阳极分离器的背面与阳离子可渗透分隔器间隔开。在阳极分离器和阳离子可渗透分隔器之间形成碱性盐水区，这增加了阳离子可渗透分隔器的使用寿命。此外，阳极隔板提供改善的氯气分离性能，增加了表面上的导电涂层的使用寿命，并且使电池能够以降低的电池电压工作。

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