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公开(公告)号:US20090194411A1
公开(公告)日:2009-08-06
申请号:US12422514
申请日:2009-04-13
申请人: Antonio Lorenzo ANTOZZI , Claudia Jennifer BARGIONI , Alice CALDERARA , Luciano IACOPETTI , Gian Nicola MARTELLI , Christian URGEGHE
发明人: Antonio Lorenzo ANTOZZI , Claudia Jennifer BARGIONI , Alice CALDERARA , Luciano IACOPETTI , Gian Nicola MARTELLI , Christian URGEGHE
CPC分类号: C25B1/34 , C23C18/08 , C25B11/0478 , C25B11/0494
摘要: The invention relates to a cathode for electrolytic processes, particularly suitable for hydrogen evolution in chlor-alkali electrolysis, consisting of a nickel substrate provided with a coating comprising a protective zone containing palladium and a physically distinct catalytic activation containing platinum or ruthenium optionally mixed with a highly oxidising metal oxide, preferably chromium or praseodymium oxide.
摘要翻译: 本发明涉及一种用于电解方法的阴极,特别适用于氯碱电解中的析氢,其由具有包含含钯保护区和物理上不同的催化活性的涂层的镍基底组成,该催化活性含有铂或钌,任选与 高度氧化的金属氧化物,优选为铬或氧化镨。
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公开(公告)号:US20130186750A1
公开(公告)日:2013-07-25
申请号:US13877942
申请日:2011-11-25
IPC分类号: C25B11/04
CPC分类号: C25B11/0484
摘要: An electrode suitable for chlorine evolution in electrolysis cells consists of a metal substrate coated with two distinct compositions applied in alternate layers, the former comprising oxides of iridium, ruthenium and valve metals, for instance tantalum, and the latter comprising oxides of iridium, ruthenium and tin.The thus-obtained electrode couples excellent characteristics of anodic potential and selectivity towards the chlorine evolution reaction.
摘要翻译: 适用于电解槽中析出氯气的电极由涂覆有两层不同组成的金属基底组成,涂覆有交替的层,前者包括铱,钌和阀金属的氧化物,例如钽,后者包括铱,钌和 锡。 由此获得的电极将阳极电位和选择性的优异特性与氯析出反应结合。
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公开(公告)号:US08366890B2
公开(公告)日:2013-02-05
申请号:US13106133
申请日:2011-05-12
申请人: Christian Urgeghe , Alexander Morozov , Alice Calderara , Dino Floriano Di Franco , Antonio Lorenzo Antozzi
发明人: Christian Urgeghe , Alexander Morozov , Alice Calderara , Dino Floriano Di Franco , Antonio Lorenzo Antozzi
CPC分类号: C25B1/46 , C25B11/0426 , C25B11/0484
摘要: The invention relates to an electrode formulation comprising a catalytic layer containing tin, ruthenium, iridium, palladium and niobium oxides applied to a titanium or other valve metal substrate. A protective layer based on titanium oxide modified with oxides of other elements such as tantalum, niobium or bismuth may be interposed between the substrate and the catalytic layer. The thus obtained electrode is suitable for use as an anode in electrolysis cells for chlorine production.
摘要翻译: 本发明涉及包含施加到钛或其它阀金属基底上的含有锡,钌,铱,钯和铌氧化物的催化剂层的电极配料。 可以在基板和催化剂层之间插入基于用其他元素如钽,铌或铋的氧化物改性的氧化钛的保护层。 这样得到的电极适用于用于氯生产的电解槽中的阳极。
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公开(公告)号:US20090035615A1
公开(公告)日:2009-02-05
申请号:US12249301
申请日:2008-10-10
申请人: Christian Urgeghe , Fulvio Federico
发明人: Christian Urgeghe , Fulvio Federico
IPC分类号: H01M8/02
CPC分类号: C25B1/46 , C25B11/035 , H01M4/8605 , H01M4/8807 , H01M4/8814 , H01M4/8828 , H01M4/8882 , H01M4/90 , H01M8/083 , Y02P70/56 , Y10T29/49112 , Y10T29/49115
摘要: The invention relates to a gas-diffusion electrode for chlor-alkali electrolysis cells integrated in a percolator of plastic porous material suitable for being vertically crossed by a downward flow of electrolyte. The electrode comprises a catalytic composition based on silver and/or nickel mixed to a polymeric binder, directly supported on the percolator without any interposed reticulated metal current collector.
摘要翻译: 本发明涉及一种用于聚合在塑料多孔材料的渗滤器中的氯碱电解池的气体扩散电极,其适用于通过向下的电解液垂直交叉。 电极包括基于银和/或镍混合到聚合物粘合剂上的催化组合物,其直接负载在渗滤器上,而没有任何插入的网状金属集流体。
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公开(公告)号:US07407591B2
公开(公告)日:2008-08-05
申请号:US11587332
申请日:2005-04-21
IPC分类号: B01J37/00
CPC分类号: B01J23/26 , A62D3/37 , A62D2101/43 , B01J37/16
摘要: Process for the reduction of a hexavalent chromium oxide based catalyst comprising contacting, under mixing conditions, a hexavalent chromium oxide based catalyst, with a molar excess, in respect of the chromium species, of a solid reducing agent and subjecting the mixture to a temperature in the range 30-1000° C. The process is simple, involves low costs and allows to obtain a permanently reduced chromium catalyst that can be disposed without toxicity risks.
摘要翻译: 还原六价铬氧化物基催化剂的方法,包括在混合条件下使六价铬氧化物基催化剂与铬物质摩尔过量相接触固体还原剂,并使混合物在 范围30-1000℃。该方法简单,涉及低成本,并且可以获得永久性还原的铬催化剂,可以处理而没有毒性危险。
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