Temperatures and enthalpies of melting of alkali-metal perrhenates

Abstract

Melting temperatures and enthalpies of melting were determined for alkali-metal perrhenates by differential enthalpic analysis using a high-temperature Calvet microcalorimeter. The following values were obtained: for LiReO4: 692 K and 24.9 KJ · mol-1; for NaReO4: 693 K and 33 kJ · mol-1; for KReO4: 828 K and 36 kJ·mol-1; for RbReO4: 878 K and 34 kJ·mol-1; for CsReO4: 893 K and 34 kJ · mol-1. © 1982.