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1. 发明专利

JP2009068109A Manufacturing method of graphite electrode for electrolytic treatment 有权
标题翻译：用于电解处理的石墨电极的制造方法
公开(公告)号：JP2009068109A
公开(公告)日：2009-04-02
申请号：JP2008234367
申请日：2008-09-12
申请人： Bayer Materialscience Ag , バイエル・マテリアルサイエンス・アクチェンゲゼルシャフトBayer MaterialScience AG
发明人： WEBER RAINER , KINTRUP JUERGEN , WEIS MATTHIAS , MUDDEMANN ODO , MOORMANN GERHARD , RAUSCHER FRANK
IPC分类号： C25B11/12 , C25B11/08
CPC分类号： C25B1/26 , C25B11/0473 , C25B11/0494 , C25B11/12
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of "a graphite electrode coated with noble metal" which is stable for a prescribed period of time, particularly under conditions for electrolytic treatment of hydrochloric acid and thus requires no replacement. SOLUTION: The manufacturing method of the graphite electrode coated mainly with noble metal for electrolytic treatment, especially for the electrolysis of hydrochloric acid includes the steps of: coating the surface of the graphite electrode with an aqueous solution of a noble metal compound and; subsequently tempering the graphite electrode at 150-650°C in the presence of a reducing gas and/or an extensively oxygen-free gas. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供在规定时间内稳定的“具有贵金属的石墨电极”的制造方法，特别是在盐酸的电解处理条件下，不需要更换。解决方案：主要用于电解处理的贵金属，特别是用于盐酸电解的石墨电极的制造方法包括以下步骤：用贵金属化合物的水溶液涂覆石墨电极的表面， ; 随后在还原气体和/或大量无氧气体的存在下，在150-650℃回火石墨电极。版权所有（C）2009，JPO＆INPIT

2. 发明专利

DE102007044171A1 未知
公开(公告)号：DE102007044171A1
公开(公告)日：2009-03-19
申请号：DE102007044171
申请日：2007-09-15
申请人： BAYER MATERIALSCIENCE AG
发明人： WEBER RAINER , KINTRUP JUERGEN , WEIS MATTHIAS , MUDDEMANN ODO , MOORMANN GERHARD , RAUSCHER FRANK
IPC分类号： C25B11/14 , C25B1/02 , C25B1/26
摘要： The method for the production of graphite electrode with a coating predominantly out of noble metal useful as electrode in the production of chlorine and hydrogen through hydrochloric acid electrolysis, comprises coating the surface of the graphite electrode with a liquid solution of noble metallic component, removing the solution and subsequently tempering the graphite electrode in the presence of reducing and/or extensively oxygen free gases at 250-350[deg] C for 2-3 hours. The produced noble metal coating consists of 7.5-20 g/m 2>of noble metal related to the graphite electrode base surface. The method for the production of graphite electrode with a coating predominantly out of noble metal useful as electrode in the production of chlorine and hydrogen through hydrochloric acid electrolysis, comprises coating the surface of the graphite electrode with a liquid solution of noble metallic component, removing the solution and subsequently tempering the graphite electrode in the presence of reducing and/or extensively oxygen free gases at 250-350[deg] C for 2-3 hours. The produced noble metal coating consists of 7.5-20 g/m 2>of noble metal related to the graphite electrode base surface. The portion of the oxygen in tempering gas is greater than 1 vol.%. The gas consists of a gas mixture out of nitrogen or noble gas with hydrogen. The hydrogen portion in the gas mixture is 1-5.5 vol.%. An independent claim is included for a graphite electrode coated with noble metal.

3. 发明专利

BRPI0804097A2 未知
公开(公告)号：BRPI0804097A2
公开(公告)日：2009-06-02
申请号：BRPI0804097
申请日：2008-09-15
申请人： BAYER MATERIALSCIENCE AG
发明人： MUDDEMANN ODO , RAUSCHER FRANK , WEBER RAINER , KINTRUP JUERGEN , WEIS MATTHIAS , MOORMANN GERHARD
IPC分类号： C25B1/14 , C25B1/02 , C25B1/26
摘要： The method for the production of graphite electrode with a coating predominantly out of noble metal useful as electrode in the production of chlorine and hydrogen through hydrochloric acid electrolysis, comprises coating the surface of the graphite electrode with a liquid solution of noble metallic component, removing the solution and subsequently tempering the graphite electrode in the presence of reducing and/or extensively oxygen free gases at 250-350[deg] C for 2-3 hours. The produced noble metal coating consists of 7.5-20 g/m 2>of noble metal related to the graphite electrode base surface. The method for the production of graphite electrode with a coating predominantly out of noble metal useful as electrode in the production of chlorine and hydrogen through hydrochloric acid electrolysis, comprises coating the surface of the graphite electrode with a liquid solution of noble metallic component, removing the solution and subsequently tempering the graphite electrode in the presence of reducing and/or extensively oxygen free gases at 250-350[deg] C for 2-3 hours. The produced noble metal coating consists of 7.5-20 g/m 2>of noble metal related to the graphite electrode base surface. The portion of the oxygen in tempering gas is greater than 1 vol.%. The gas consists of a gas mixture out of nitrogen or noble gas with hydrogen. The hydrogen portion in the gas mixture is 1-5.5 vol.%. An independent claim is included for a graphite electrode coated with noble metal.

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