Stability of the phospho-molybdic Dawson-type ion P2Mo18O626- in aqueous media

被引:46
作者
Briand, LE [1 ]
Valle, GM [1 ]
Thomas, HJ [1 ]
机构
[1] Univ Nacl La Plata, CINDECA, Consejo Nacl Invest Cient & Tecn, RA-1900 Buenos Aires, DF, Argentina
关键词
D O I
10.1039/b106769a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The stability of the ammonium phospho-molybdic Dawson-type salt (NH4)(6)P2Mo18O62.12H(2)O in aqueous solution has been studied. The polyanion P2Mo18O626- decomposes into the lacunar Keggin-type anion HxPMo(11)O(39)((7-x)-), HxMo5P2O23(6-x)-, phosphate and oxomolybdate species, regardless of the concentration and acid-base conditions.
引用
收藏
页码:299 / 304
页数:6
相关论文
共 25 条
[1]  
ASTM, 1997, 9412 PDF ASTM JOINT
[2]   Thermal stability and catalytic activity of Wells-Dawson tungsten heteropoly salts [J].
Briand, LE ;
Thomas, HJ ;
Baronetti, GT .
APPLIED CATALYSIS A-GENERAL, 2000, 201 (02) :191-202
[3]   Adsorption studies and species characterization in catalysts obtained from aqueous solutions or phosphomolybdic acid and gamma-alumina [J].
Castillo, MA ;
Vazquez, PG ;
Blanco, MN ;
Caceres, CV .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1996, 92 (17) :3239-3246
[5]   NMR-STUDY OF THE ADSORPTION OF PHOSPHOMOLYBDATES ON ALUMINA [J].
CHENG, WC ;
LUTHRA, NP .
JOURNAL OF CATALYSIS, 1988, 109 (01) :163-169
[6]   The solid-state rearrangement of the Wells-Dawson K6P2W18O62 center dot 10H(2)O to a stable Keggin-type heteropolyanion phase: A catalyst for the selective oxidation of isobutane to isobutene [J].
Comuzzi, C ;
Dolcetti, G ;
Trovarelli, A ;
Cavani, F ;
Trifiro, F ;
Llorca, J ;
Finke, RG .
CATALYSIS LETTERS, 1996, 36 (1-2) :75-79
[7]   Molybdophosphoric acid adsorption on titania from ethanol-water solutions [J].
Concellon, A ;
Vazquez, P ;
Blanco, M ;
Caceres, C .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1998, 204 (02) :256-267
[8]  
DEO G, 1994, CRIT REV SURF CHEM, V4, P141
[9]   CHIRALITY OF OXIDIZED AND REDUCED OCTADECAMOLYBDODIPHOSPHATE ANIONS - OBSERVATION OF A PFEIFFER EFFECT [J].
GARVEY, JF ;
POPE, MT .
INORGANIC CHEMISTRY, 1978, 17 (05) :1115-1118
[10]   Alumina supported HDS catalysts prepared by impregnation with new heteropolycompounds. Comparison with catalysts prepared by conventional Co-Mo-P coimpregnation [J].
Griboval, A ;
Blanchard, P ;
Payen, E ;
Fournier, M ;
Dubois, JL .
CATALYSIS TODAY, 1998, 45 (1-4) :277-283