Published 1999 | Version v1
Journal article Metadata-only

To the problem of lithium orthoniobate stability

Creators

  • 1. Moskovskij Gosudarstvennyj Inst. Stali i Splavov, Moscow (Russian Federation)

Description

The thermodynamic properties of lithium orthoniobate were calculated using approximate methods and the experimental data. Thermodynamic stability of lithium orthoniobate was determined in the following acid solutions: H2SO4, HCl, HNO3, HBr, HI. The kinetic dependences during the composition by acids were registered. Apparent activation energies for HCl, HNO3 and H2SO4, being equal according 16.3; 20.4 and 23.7 kJ/mol were calculated

Abstract (Russian)

С использованием приближенных методов, а также на основе экспериментальных данных рассчитаны термодинамические характеристики ортониобата лития. Определена термодинамическая устойчивость ортониобата лития в растворах кислот: H2SO4, HCl, HNO3, HBr, HI. Сняты кинетические зависимости при разложении кислотами, рассчитаны кажущиеся энергии активации для HCl, HNO3 и H2SO4, которые соответственно равны 16,3; 20,4 и 23,7 кДж/моль

Additional details

Additional titles

Original title (Russian)
К вопросу об устойчивости ортониобата лития

Publishing Information

Journal Title
Izvestiya Vysshikh Uchebnykh Zavedenij. Tsvetnaya Metallurgiya
Journal Issue
no.2
Journal Page Range
p. 25-28
ISSN
0021-3438
CODEN
IVUTAK

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
31015740
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ACTIVATION ENERGY; AQUEOUS SOLUTIONS; HYDROCHLORIC ACID; HYDROMETALLURGY; LEACHING; LITHIUM COMPOUNDS; NIOBATES; NITRIC ACID; PHASE DIAGRAMS; SULFURIC ACID; THERMODYNAMIC PROPERTIES
Descriptors DEC
ALKALI METAL COMPOUNDS; CHLORINE COMPOUNDS; DIAGRAMS; DISPERSIONS; DISSOLUTION; ENERGY; EXTRACTIVE METALLURGY; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; INFORMATION; INORGANIC ACIDS; INORGANIC COMPOUNDS; METALLURGY; MIXTURES; NIOBIUM COMPOUNDS; NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SEPARATION PROCESSES; SOLUTIONS; SULFUR COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
6 refs.,4 figs.,2 tabs.