Solubility of platinum in acidic media (I) - in sulfuric acid

被引：9
|
作者：
Mitsushima, Shigenori [1 ]
Koizumi, Yuki [1 ]
Ota, Ken-ichiro [1 ]
Kamiya, Nobuyuki [1 ]
机构：
[1] Yokohama Natl Univ, Chem Energy Lab, Hodogaya Ku, Yokohama, Kanagawa 2408501, Japan
来源：
ELECTROCHEMISTRY | 2007年 / 75卷 / 02期
关键词：
platinum; solubility; acid; PEFC; durability;
D O I：
10.5796/electrochemistry.75.155
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Platinum depositions have been observed in the electrolyte membrane of polymer electrolyte fuel cells (PEFCs) as in other types of fuel cells; PEFCs, MCFCs. The platinum solubility in the membrane must be a key issue to improve and guarantee the durability of PEFCs. In this basic study, the platinum solubility has been determined in an acidic medium as a function of temperature, pH, and potential which was controlled by the oxygen partial pressure. The solubility was 3.0 x 10(-6) mol dm(-3) at 23 degrees C in I mol dm(-3) H2SO4 under air, and increased with temperature and the decrease in pH. The platinum solubility slightly increased with the oxygen partial pressure in oxygen-nitrogen mixtures. However, the solubility in nitrogen was much smaller than the mixtures. Based on these results, the dissolution of platinum in an acidic medium would follow the acidic dissolution mechanism.
引用
收藏
页码：155 / 158
页数：4
相关论文
共 50 条
  • [21] SOLUBILITY OF AROMATIC HYDROCARBONS IN AQUEOUS SULFURIC ACID
    CERFONTAIN, H
    RECUEIL DES TRAVAUX CHIMIQUES DES PAYS-BAS, 1965, 84 (04): : 491 - +
  • [22] Solubility series of methanofullerenes in concentrated sulfuric acid
    Biglova, Yu. N.
    Kolesov, S. V.
    Biglova, R. Z.
    Kraikin, V. A.
    RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, 2015, 89 (12) : 2238 - 2242
  • [23] Solubility of HBr in sulfuric acid at stratospheric temperatures
    Williams, L. R.
    Golden, D. M.
    Huestis, D. L.
    J G R: Journal of Geophysical Research, 100 (04):
  • [24] SOLUBILITY AND PROTONATION OF OZONE IN SULFURIC-ACID
    TIUPALO, NF
    LUTSYK, AI
    SEMENIUK, TN
    DMITRUK, AF
    DOKLADY AKADEMII NAUK SSSR, 1987, 297 (03): : 624 - 627
  • [25] Solubility of nitric oxide and air in sulfuric acid
    Tower, OF
    ZEITSCHRIFT FUR ANORGANISCHE CHEMIE, 1906, 50 (04): : 382 - 388
  • [26] The electroreduction of hydrogen on platinum(111) in acidic media
    Blum, L
    Huckaby, DA
    Marzari, N
    Car, R
    JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2002, 537 (1-2): : 7 - 19
  • [27] INVESTIGATION OF RUTHENIUM DEPOSITION ONTO A PLATINIZED PLATINUM-ELECTRODE IN SULFURIC-ACID MEDIA
    SZABO, S
    BAKOS, I
    JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1987, 230 (1-2): : 233 - 240
  • [28] Insights into the electrooxidation of glycolaldehyde on platinum in acidic media
    de Lima, Roberto B.
    Araujo, Herbert R.
    Camara, Giuseppe A.
    JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2013, 709 : 77 - 82
  • [29] Regarding the attack of platinum by sulfuric acid.
    Quennessen, L
    COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES, 1906, 142 : 1341 - 1343
  • [30] Dissolution Mechanism of Platinum in Sulfuric Acid Solution
    Sugawara, Yu
    Okayasu, Takayoshi
    Yadav, Amar Prasad
    Nishikata, Atsushi
    Tsuru, Tooru
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2012, 159 (11) : F779 - F786
12345