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Title: Heat capacities of Calorimetry Conference copper and of muscovite KAl/sub 2/(AlSi/sub 3/)O/sub 10/(OH)/sub 2/, pyrophyllite Al/sub 2/Si/sub 4/O/sub 10/(OH)/sub 2/, and illite K/sub 3/(Al/sub 7/Mg(Si/sub 14/Al/sub 2/)O/sub 40/(OH)/sub 8/ between 15 and 375/sup 0/K and their standard entropies at 298. 15/sup 0/K

Abstract

The heat capacities of Calorimetry Conference copper and of muscovite, pyrophyllite, and illite were measured between 15 and 375/sup 0/K using an adiabatic calorimeter. Tables of the thermodynamic functions C/sup 0//sub p/, (H/sup 0//sub T/--H/sub 0//sup 0/)/T, (G/sup 0//sub T/--H/sub 0//sup 0/)/T, and S/sup 0//sub T/--S/sub 0//sup 0/ are presented for these phases at integral temperatures from 0 to 30/sup 0/K. At 298.15/sup 0/K (25.0/sup 0/C), S/sup 0//sub T/--S/sub 0//sup 0/ is 33.12 +- 0.06, 287.7 +- 0.6, 239.4 +- 0.4, and 1,104.2 +- 0.6 J/(mol.K) for copper, muscovite, pyrophyllite, and illite, respectively. The operation of a semiautomatic data-acquisition system for calorimetric measurements at low temperatures is also described, together with a description of a miniature calorimeter having a novel closure seal.

Authors:
; ;
Publication Date:
OSTI Identifier:
6530675
Resource Type:
Journal Article
Journal Name:
J. Res. U.S. Geol. Surv.; (United States)
Additional Journal Information:
Journal Volume: 4:6
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; COPPER; SPECIFIC HEAT; THERMODYNAMIC PROPERTIES; ILLITE; MUSCOVITE; PYROPHYLLITE; CALORIMETERS; DATA ACQUISITION SYSTEMS; ALUMINIUM COMPOUNDS; ALUMINIUM SILICATES; CLAYS; ELEMENTS; MEASURING INSTRUMENTS; METALS; MICA; MINERALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SILICATES; SILICON COMPOUNDS; TRANSITION ELEMENTS; 152002* - Geothermal Data & Theory- Properties of Minerals & Rocks

Citation Formats

Robie, R A, Hemingway, B S, and Wilson, W H. Heat capacities of Calorimetry Conference copper and of muscovite KAl/sub 2/(AlSi/sub 3/)O/sub 10/(OH)/sub 2/, pyrophyllite Al/sub 2/Si/sub 4/O/sub 10/(OH)/sub 2/, and illite K/sub 3/(Al/sub 7/Mg(Si/sub 14/Al/sub 2/)O/sub 40/(OH)/sub 8/ between 15 and 375/sup 0/K and their standard entropies at 298. 15/sup 0/K. United States: N. p., 1976. Web.
Robie, R A, Hemingway, B S, & Wilson, W H. Heat capacities of Calorimetry Conference copper and of muscovite KAl/sub 2/(AlSi/sub 3/)O/sub 10/(OH)/sub 2/, pyrophyllite Al/sub 2/Si/sub 4/O/sub 10/(OH)/sub 2/, and illite K/sub 3/(Al/sub 7/Mg(Si/sub 14/Al/sub 2/)O/sub 40/(OH)/sub 8/ between 15 and 375/sup 0/K and their standard entropies at 298. 15/sup 0/K. United States.
Robie, R A, Hemingway, B S, and Wilson, W H. Thu . "Heat capacities of Calorimetry Conference copper and of muscovite KAl/sub 2/(AlSi/sub 3/)O/sub 10/(OH)/sub 2/, pyrophyllite Al/sub 2/Si/sub 4/O/sub 10/(OH)/sub 2/, and illite K/sub 3/(Al/sub 7/Mg(Si/sub 14/Al/sub 2/)O/sub 40/(OH)/sub 8/ between 15 and 375/sup 0/K and their standard entropies at 298. 15/sup 0/K". United States.
@article{osti_6530675,
title = {Heat capacities of Calorimetry Conference copper and of muscovite KAl/sub 2/(AlSi/sub 3/)O/sub 10/(OH)/sub 2/, pyrophyllite Al/sub 2/Si/sub 4/O/sub 10/(OH)/sub 2/, and illite K/sub 3/(Al/sub 7/Mg(Si/sub 14/Al/sub 2/)O/sub 40/(OH)/sub 8/ between 15 and 375/sup 0/K and their standard entropies at 298. 15/sup 0/K},
author = {Robie, R A and Hemingway, B S and Wilson, W H},
abstractNote = {The heat capacities of Calorimetry Conference copper and of muscovite, pyrophyllite, and illite were measured between 15 and 375/sup 0/K using an adiabatic calorimeter. Tables of the thermodynamic functions C/sup 0//sub p/, (H/sup 0//sub T/--H/sub 0//sup 0/)/T, (G/sup 0//sub T/--H/sub 0//sup 0/)/T, and S/sup 0//sub T/--S/sub 0//sup 0/ are presented for these phases at integral temperatures from 0 to 30/sup 0/K. At 298.15/sup 0/K (25.0/sup 0/C), S/sup 0//sub T/--S/sub 0//sup 0/ is 33.12 +- 0.06, 287.7 +- 0.6, 239.4 +- 0.4, and 1,104.2 +- 0.6 J/(mol.K) for copper, muscovite, pyrophyllite, and illite, respectively. The operation of a semiautomatic data-acquisition system for calorimetric measurements at low temperatures is also described, together with a description of a miniature calorimeter having a novel closure seal.},
doi = {},
journal = {J. Res. U.S. Geol. Surv.; (United States)},
number = ,
volume = 4:6,
place = {United States},
year = {1976},
month = {1}
}