• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1461650 Barium titanates C CONRADTY 29 Oct 1974 [31 Oct 1973] 46722/74 Heading C1A [Also in Division C7] A modified Ba titanate of formula where M is a metal (e.g. of the Pt group) and x#1À0 is made by heating in vacuum above 1000‹ C. a blend of BaCO 3 , TiO 2 and the metal or its oxide. Compounds disclosed are They are useful as binders for electrochemically active oxides on electrolysis electrodes as they have both conductivity and electrochemical activity.
    公开号:SU845793A3
    申请号:SU742073852
    申请日:1974-10-31
    公开日:1981-07-07
    发明作者:Целлнер Кристина；Целлнер Дитер；Коциоль Конрад
    申请人:Конрадти Гмбх Унд Ко.Металлэлектроден Кг(Фирма)；
    IPC主号:
    专利说明:

    The invention relates to metallic coated electrodes. A known electrode with an activated coating of platinum and / or palladates with an immersion additive deposited on a metal substrate 1. As an immersion additive, mixtures of oxides of noble metals are used. A disadvantage of the known electrode is the short life of the electrode due to the loss of noble metals. The aim of the invention is to increase the service life of the electrode by reducing the loss of noble metals. This goal is achieved by the fact that in an electrode with an activated coating of platinates and / or palladates with an immersion additive deposited on a metal substrate, the compound of the type Ba (MjiTI.) 0, j in the amount of 26–90% by volume is used as an immersion additive. where M - pt, Ru, Rh, Pd, 0s, Jr, X «i 0.1-0.5. The compounds proposed as immersion additives are well associated with the titanium surface of the electrodes, are electrically conductive and exhibit some electro-catalytic activity. The proposed electrode can be manufactured as follows. Example. a gram-molecule of Ba C0, 0.1 gram-molecule of P tO, 0.9 gram of a TiOj molecule is finely ground and heated for about 1 h in air in a silicon crucible. The sintered material is ground again and kept under vacuum at 1300 ° C for 24 hours. A homogeneous amber color is obtained. This substance (70%) together with (30%) is sealed with on platinum titanium. The ratio of immersion additive and histomatic layer to obtain an electrode with maximum activity is 60 and 40%, respectively, but in some cases the amount of honest immersion additive can be reduced to 26% or increased to 90 vol.%. Electrodes obtained in this way show current returns of 97–98%. The reaction in the formation of a coating on the electrode proceeds according to the equation
    fratO 0, lPtOa + 0 9TiOa (Pto, t fog) 0 ,, + COa + Oa
    A reduction in Pt below 0.1 is impractical because pure barium titanate is formed, which is chemically low active and non-conducting. When the P t content is greater than 0.5, metallic platinum may be released, which contaminates the compound. In addition to Pt, Ru, Rh, Pd, 0s, Jr. can also be used as metal.
    The electrodes obtained in this manner work in electrolysis cells for electrolysis. NaCl at current density
    iO, 000 A / m, voltage 4.3 V for 15 months.
    The immersion additive can be made in such a way that it contains the same noble metal, 5 as in the active layer. For example, if the activating substance has the composition .jO the additive may be Ba i. P) From,, if the active layer contains Pd, for example T, then the preparation contains Pd - BaiPd, - f o, 7) 0y
    Comparative test results of the proposed and known electrodes in the production of chlorine and alkali are given in the table.
    权利要求:
    Claims (1)
    [1]
    It follows from the table that electrodes with the proposed immersion additive can significantly reduce the consumption of noble metals in the electrolysis process. Claims of the Invention An electrode with an activated coating of platinum and / or palladato with an immersion additive deposited on a metal substrate is needed so that, in order to increase its service life by reducing the loss of noble metals, As an immersion additive, compounds of the following type are used. BaCM, i) 0d in the amount of 26-90 vol.% where M is Pt, Ru, Rh, Pd, 0s, Jr, X 0.1-0.5. Sources of information taken into account in the examination. 1. US Patent No. 3689383, cl. 209-93, published. 1972 iprototype) ..
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    同族专利:
    公开号 | 公开日
    NL179401B|1986-04-01|
    FI57447C|1987-09-30|
    CA1028904A|1978-04-04|
    US3992280A|1976-11-16|
    JPS5813631B2|1983-03-15|
    GB1461650A|1977-01-13|
    NO743916L|1975-05-26|
    SE396411B|1977-09-19|
    NO139644C|1985-04-22|
    JPS5075174A|1975-06-20|
    DE2354477A1|1975-05-15|
    AT333315B|1976-11-10|
    NO139644B|1979-01-08|
    NL7414210A|1975-05-02|
    CH606493A5|1978-10-31|
    FI312974A|1975-05-01|
    FR2249976A1|1975-05-30|
    BE821588A|1975-02-17|
    YU283274A|1982-05-31|
    ZA746551B|1975-10-29|
    ATA843474A|1976-03-15|
    SE7413668L|1975-05-02|
    FI57447B|1980-04-30|
    FR2249976B1|1978-10-27|
    ES431334A1|1976-11-16|
    IE40092L|1975-04-30|
    IE40092B1|1979-03-14|
    IT1060370B|1982-07-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1164477A|1965-12-28|1969-09-17|Matsushita Electric Ind Co Ltd|Electrochemical Electrode|
    US3616445A|1967-12-14|1971-10-26|Electronor Corp|Titanium or tantalum base electrodes with applied titanium or tantalum oxide face activated with noble metals or noble metal oxides|
    US3689383A|1969-03-28|1972-09-05|Ppg Industries Inc|Method of coating an electrode|
    US3706644A|1970-07-31|1972-12-19|Ppg Industries Inc|Method of regenerating spinel surfaced electrodes|
    US3711397A|1970-11-02|1973-01-16|Ppg Industries Inc|Electrode and process for making same|US4065377A|1974-10-22|1977-12-27|C. Conradty Nurnberg Gmbh & Co. Kg|Metal anode for electrochemical processes|
    FR2370109B1|1976-11-04|1979-03-02|Rhone Poulenc Ind|
    NO801818L|1979-07-20|1981-01-21|Conradty Nuernberg|RECOVERABLE, FORM-STABLE ELECTRODE FOR HIGH TEMPERATURE USE|
    US4396485A|1981-05-04|1983-08-02|Diamond Shamrock Corporation|Film photoelectrodes|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19732354477|DE2354477A1|1973-10-31|1973-10-31|METAL ELECTRODE WITH TOP LAYER FOR ELECTROCHEMICAL PURPOSES|
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