Published August 2003 | Version v1
Journal article Metadata-only

Dielectric properties of ammonium heptamolybdate aqueous solutions

Creators

  • 1. RAN, Inst. Obshchej i Neorganicheskoj Khimii im. N.S. Kurnakova, Moscow (Russian Federation)
  • 2. Ural'skij Gosudarstvennyj Univ., Ekaterinburg (Russian Federation)

Description

UHF dielectric properties of ammonium heptamolybdate aqueous solutions in the range of frequencies corresponding to dispersion maximum of dielectric permittivity of water and solutions in the range of temperatures 283-313 K were studied. The values of static dielectric permittivity and time of solutions dielectric relaxation were identified. It is shown that dielectric constant decreases with salt concentration growth at all temperatures. Meanwhile, its decrease is less pronounced compared to solutions, where simple anions are present. The dissolved ions produce a very slight effect on rotational mobility of water molecules in solutions

Abstract (Russian)

Исследованы СВЧ диэлектрические свойства водных растворов гептамолибдата аммония в области частот, отвечающих максимуму дисперсии диэлектрической проницаемости воды и растворов в интервале температур 283-313 К. Найдены значения статической диэлектрической проницаемости и времени диэлектрической релаксации растворов. Показано, что диэлектрическая константа понижается с ростом концентрации соли при всех температурах. При этом ее уменьшение менее выражено по сравнению с растворами, где присутствуют простые анионы. Рассмотренные ионы очень слабо влияют на вращательную подвижность молекул воды в растворах

Additional details

Additional titles

Original title (Russian)
Диэлектрические свойства водных растворов гептамолибдата аммония

Publishing Information

Journal Title
Zhurnal Neorganicheskoj Khimii
Journal Volume
48
Journal Issue
8
Journal Page Range
p. 1391-1396
ISSN
0044-457X
CODEN
ZNOKAQ

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
35090251
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACTIVATION ENERGY; AMMONIUM COMPOUNDS; AQUEOUS SOLUTIONS; CONCENTRATION RATIO; DIELECTRIC PROPERTIES; ELECTRIC CONDUCTIVITY; HYDRATION; MOLYBDATES; RELAXATION TIME; TEMPERATURE RANGE 0273-0400 K
Descriptors DEC
DISPERSIONS; ELECTRICAL PROPERTIES; ENERGY; HOMOGENEOUS MIXTURES; MIXTURES; MOLYBDENUM COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; SOLUTIONS; SOLVATION; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
15 refs., 3 figs., 3 tabs.