Published March 2008 | Version v1
Journal article Metadata-only

Thermodynamics of the strontium molybdate sublimation

Creators

  • 1. RAN, Inst. Metallurgii i Materialovedeniya im. A.A. Bajkova, Moscow (Russian Federation)

Description

High-temperature mass-spectrometric analysis is used to study the sublimation of SrMoO4(s) at 1570-1800 K. SrMoO4(g) molecules are found to be present in the vapor. The vapor pressure of the SrMoO4(g) molecule is determined to be log p=-19980/T + 7.99. The heat of sublimation ΔHs,00(SrMoO4(s)=480±40 kJ/mol is determined using the third law of thermodynamics. The atomization energy of the SrMoO4(g)molecules is calculated to be : ΔHat,00(SrMoO4(g)=2860±40 kJ/mol

Abstract (Russian)

Методом высокотемпературной масс-спектрометрии исследована сублимация SrMoO4(т) в области температур 1570-1800 K. В газовой фазе найдены молекулы SrMoO4(г), определено давление их пара. Для молекул SrMoO4(г) получена зависимость в виде lgp=-19980/T+7,99 и с использованием III начала термодинамики найдена теплота сублимации ΔНs,00(SrMoO4(т)=480±40 кДж/моль. Вычислена энергия атомизации молекул SrMoO4(г): ΔНat,00(SrMoO4(г)=2860±40 кДж/моль

Additional details

Additional titles

Original title (Russian)
Исследование термодинамики сублимации молибдата стронция

Publishing Information

Journal Title
Metally (Moscow)
Journal Issue
no.2
Journal Page Range
p. 16-19
ISSN
0869-5733
CODEN
MEALET

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
39119840
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ATOMIZATION; GASES; MASS SPECTROSCOPY; MOLYBDATES; STRONTIUM COMPOUNDS; SUBLIMATION; TEMPERATURE RANGE 1000-4000 K; THERMODYNAMIC PROPERTIES; VAPOR PRESSURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; EVAPORATION; FLUIDS; MOLYBDENUM COMPOUNDS; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; SPECTROSCOPY; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
5 refs., 4 tabs.