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High-temperature Enthalpy and X-ray Powder Diffraction Data for Aluminum Sulfide (Al2s3).

Authors
Ferrante-MJ; McCune-RA
Source
MISSING :10 pages
Link
NIOSHTIC No.
10006652
Abstract
High-temperature enthalpy and x-ray powder diffraction studies were conducted on aluminum sulfide (al2s3) as part of the Bureau of Mines effort to provide new data for the advancement of mineral technology consistent with environmental preservation and energy conservation. Relative enthalpies were measured with a copper-block calorimeter from 298.15 to 879 k. Tabulated values are listed for heat capacity, entropy, Gibbs energy functions, and relative enthalpies between 298.15 and 900 k. Enthalpies were also given in the form of an equation and combined with published data to calculate standard enthalpies of formation and Gibbs energies of formation for reactions of crystalline aluminum with crystalline, liquid, and gaseous diatomic sulfur. The hexagonal, rhombohedral, and cubic phases of al2s3 were identified by x-ray powder diffraction studies, and the indexed powder diffraction patterns of these phases are given. The hexagonal phase was stable to about 852 k and was partially converted to the rhombohedral form at 879 k.
Publication Date
19810101
Document Type
IH; Report of Investigation;
Fiscal Year
1981
NTIS Accession No.
NTIS Price
Identifying No.
RI 8526
NIOSH Division
ALRC;
Source Name
MISSING
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