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1. 发明授权

US06503386B2 Process for the production of alkali metal- and ammonium peroxodisulfate 有权
标题翻译：生产碱金属和二氧化硫酸铵的方法
公开(公告)号：US06503386B2
公开(公告)日：2003-01-07
申请号：US09825352
申请日：2001-04-04
申请人： Thomas Lehmann , Patrik Stenner
发明人： Thomas Lehmann , Patrik Stenner
IPC分类号： C25B128
CPC分类号： C25B1/285
摘要： The invention relates to a process for the production of a peroxodisulfate, such as ammonium-, sodium- and potassium peroxodisulfate by anodic oxidation of an electrolyte containing a sulfate and/or hydrogen sulfate. The disadvantages of the conventional platinum anodes used for this hitherto can be avoided by using as the anode a diamond film mounted on a conductive carrier and made conductive by doping with a tri- or pentavalent element and by not adding a promoter to the anolyte.
摘要翻译：本发明涉及通过含有硫酸盐和/或硫酸氢盐的电解质的阳极氧化来生产过二硫酸盐如过硫酸铵，过硫酸钠和钾的方法。迄今使用的常规铂阳极的缺点可以通过使用安装在导电载体上的金刚石膜作为阳极并通过掺杂三价或五价元素并通过不向阳极电解液添加助催化剂而导电来避免。

2. 发明授权

US06214197B1 Process for producing persulfate 有权
标题翻译：生产过硫酸盐的方法
公开(公告)号：US06214197B1
公开(公告)日：2001-04-10
申请号：US09275026
申请日：1999-03-24
申请人： Ken-ichi Kimizuka , Shoichiro Kajiwara , Takamitsu Tsuruga
发明人： Ken-ichi Kimizuka , Shoichiro Kajiwara , Takamitsu Tsuruga
IPC分类号： C25B128
CPC分类号： C25B1/285
摘要： There are disclosed (1) a process for producing ammonium persulfate which comprises electrolyzing, as the starting raw material for an anode, an aqueous solution containing ammonium sulfate wherein ammonium ions are present in an amount of at least one equivalent based on sulfate ions; (2) a process for producing sodium persulfate which comprises the step (A) of electrolyzing an aqueous solution containing ammonium sulfate at an anode, the step (B) of producing sodium persulfate, the step (C) of crystallizing and separating the sodium persulfate and the step (D) of recycling the liquid produced at a cathode together with ammonia for use as the starting raw material for an anode in the step (A); and (3) a process for producing potassium persulfate which comprises the step (A′) of electrolyzing an aqueous solution containing ammonium sulfate at an anode; and the step (B′) of producing potassium persulfate. The above processes are capable of effectively producing respective persulfates in an industrially advantageous manner.
摘要翻译：公开了（1）一种生产过硫酸铵的方法，该方法包括电解作为阳极起始原料的含有硫酸铵的水溶液，其中铵离子以基于硫酸根离子的至少一当量存在; （2）一种生产过硫酸钠的方法，其包括在阳极电解含有硫酸铵的水溶液的步骤（A），制备过硫酸钠的步骤（B），将过硫酸钠结晶和分离的步骤（C）以及在步骤（A）中将在阴极处产生的液体与氨一起再循环以用作阳极的起始原料的步骤（D）; （3）生产过硫酸钾的方法，其包括在阳极电解含有硫酸铵的水溶液的步骤（A'）; 和生产过硫酸钾的步骤（B'）。上述方法能够以工业上有利的方式有效地生产各自的过硫酸盐。

3. 发明授权

US06368488B1 Modified platinum substrates for oxygen reduction 失效
标题翻译：用于氧还原的改性铂基板
公开(公告)号：US06368488B1
公开(公告)日：2002-04-09
申请号：US09623339
申请日：2000-11-15
申请人： Daniel A. Scherson
发明人： Daniel A. Scherson
IPC分类号： C25B128
CPC分类号： C25B11/0484 , B01D53/326 , C25B1/30 , C25B11/04 , H01M4/38 , H01M4/667 , H01M4/92
摘要： An electrode (10, 112) containing platinum has its surface modified with sulfur, tellurium, or selenium, or compounds thereof, which renders the surface highly selective for the conversion of oxygen to hydrogen peroxide. The high selectivity of the electrode, and its ability to function in acidic electrolytes make it suitable to a variety of electrochemical processes. In a preferred embodiment, an oxygen concentration device (A) incorporating the electrode as a cathode (10) also includes an anode (12) and a selective membrane (14), formed from a solid polymer electrolyte material, between the anode and the cathode. An oxygen-containing atmosphere is brought into contact with the cathode where it is converted to hydrogen peroxide. The hydrogen peroxide passes through the membrane to the anode where it is reconverted to purified oxygen.
摘要翻译：含有铂的电极（10,112）的表面被硫，碲或硒或其化合物表面改性，这使得表面对氧转化为过氧化氢具有高选择性。电极的高选择性及其在酸性电解质中的功能使其适用于各种电化学过程。在优选实施例中，将电极作为阴极（10）并入的氧浓度装置（A）还包括在阳极和阴极之间由固体聚合物电解质材料形成的阳极（12）和选择性膜（14）。使含氧气氛与阴极接触，将其转化为过氧化氢。过氧化氢通过膜到达阳极，在那里再转化为纯化的氧气。

4. 发明授权

US06454929B1 Process for the simultaneous electrochemical preparation of sodium dithionite and sodium peroxodisulfate 失效
标题翻译：同时电化学制备连二亚硫酸钠和过硫酸钠的方法
公开(公告)号：US06454929B1
公开(公告)日：2002-09-24
申请号：US09845021
申请日：2001-04-27
申请人： Wolfgang Thiele , Knut Wildner , Hermann Matschiner , Michael Gnann
发明人： Wolfgang Thiele , Knut Wildner , Hermann Matschiner , Michael Gnann
IPC分类号： C25B128
CPC分类号： C25B1/285 , C25B1/14 , C25B1/28
摘要： A process for the simultaneous preparation of sodium peroxodisulfate and sodium dithionite in an electrolysis cell divided into two by a cation exchanger membrane, wherein sodium dithionite is produced at the cathode and sodium peroxodisulfate is produced at the anode.
摘要翻译：在通过阳离子交换膜将电解槽中同时制备二次硫酸钠和连二亚硫酸钠的方法，其中阴极产生连二亚硫酸钠，在阳极产生过氧二硫酸钠。

5. 发明授权

US06200454B1 Process for producing sodium persulfate 有权
标题翻译：生产过硫酸钠的方法
公开(公告)号：US06200454B1
公开(公告)日：2001-03-13
申请号：US09498614
申请日：2000-02-07
申请人： Ken-ichi Kimizuka , Shoichiro Kajiwara , Takamitsu Tsuruga
发明人： Ken-ichi Kimizuka , Shoichiro Kajiwara , Takamitsu Tsuruga
IPC分类号： C25B128
CPC分类号： C25B1/285
摘要： There is disclosed a process for producing sodium persulfate which comprises the step (1) of electrolyzing, at an anode, a solution containing ammonium sulfate, and the step (2) of producing sodium persulfate from the resultant liquid produced at the anode and sodium hydroxide and, as desired, the step of removing sodium sulfate, and further as desired, the step (3) of performing crystallization on the reaction liquid as produced in the step (2). According to the above process, it is made possible to efficiently produce sodium persulfate having a markedly high purity substantially free from nitrogen components at a high yield at a high current efficiency in electrolysis.
摘要翻译：公开了一种生产过硫酸钠的方法，其包括在阳极电解含有硫酸铵的溶液的步骤（1）和从阳极产生的所得液体中生产过硫酸钠的步骤（2）和氢氧化钠根据需要，根据需要进一步根据步骤（2）中制备的对反应液进行结晶的步骤（3）。根据上述方法，可以以高电流效率在电解中以高产率有效地制备基本上不含氮成分的显着高纯度的过硫酸钠。

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