Calorimetric determination of the enthalpy of formation of partheite, a calcium zeolite

被引：3

作者：

Ogorodova, L. P. ^{[1
]}

Kiseleva, I. A. ^{[1
]}

Mel'chakova, L. V. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Fac Geol, Moscow 111992, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2007年 / 81卷 / 02期

关键词：

Enthalpy; Zeolite; Corundum; Calorimetric Measurement; Natural Zeolite;

D O I：

10.1134/S0036024407020306

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A thermochemical study of partheite of composition (Ca1.96Mg0.04Na0.01K0.01) center dot [(Al4.04Fe0.013+)Si3.95O14.97(OH)(2.03)] center dot 4.2H(2)O, a natural calcium zeolite extracted from gabbro pegmatites of the Denezhkin Kamen' deposit (North Ural, Russia), was performed. The enthalpies of formation of partheite from the constituent oxides, (Delta H-f(ox)degrees(298.15 K) = -359 +/- 21), and elements, (Delta H-f(el)degrees(298.15 K) = -10108 +/- 21), were determined by means of high-temperature in-melt-dissolution calorimetry. On the basis of the experimental data obtained, the enthalpy of formation of partheite of theoretical composition Ca-2[Al4Si4O15(OH)(2)] center dot 4H(2)O from the elements was evaluated, -10052 +/- 21 kJ/mol.

引用

页码：315 / 316

页数：2