HIGH TEMPERATURE HEAT CONTENT AND FUSION PROPERTIES FOR BINARY CARBONATE MIXTURES. LI,K|CO3 AND NA,K|CO3

Abstract

Enthalpy changes between temperatures ranging from 150 to 900 deg C were measured by drop calorimetry for the equimolar Na, K/CO3 minimum melting mixture (m. pt. 710 deg C) and the equimolar Li, K/CO3 mixture (m. pt. 505 deg C). Heats of fusion (kcal/mol) thus determined are: Na, K/CO3, 4.7; Li, K/CO3, 8.7 respectively. Entropies of fusion and specific heats are likewise reported. The heat of mixing (kcal/mol) and the excess entropy of mixing (cal/deg mol) at 898 deg C are, respectively, +1.8 and +0.2 for the Na, K/CO3 mixture, and -0.1 and -1.5 for the Li, K/CO3 mixture. The thermodynamic relations are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1964
Accession Number
AD0436036

Entities

People

  • G. J. Janz
  • Jeanne L. Perano

Organizations

  • Rensselaer Polytechnic Institute

Tags

Communities of Interest

  • Counter WMD
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Calorimetry
  • Carbonates
  • Chemistry
  • Coefficients
  • Energy
  • Enthalpy
  • Enthalpy Changes
  • Equations
  • Excess Entropy
  • Heat Capacity
  • Heat Energy
  • High Temperature
  • Military Research
  • New York
  • Phase Transformations
  • Solid Solutions
  • Specific Heat

Fields of Study

  • Chemistry

Readers

  • Analytical Mechanics
  • Combustion science or combustion engineering.