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Preparation of High-Purity Arsenic via Hydrogen Reduction of Arsenic Trichloride

Preparation of High-Purity Arsenic via Hydrogen Reduction of Arsenic Trichloride The chemical equilibria involved in the hydrogen reduction of arsenic trichloride under reaction conditions of practical interest are assessed by thermodynamic modeling. Experimental data for high-purity arsenic trichloride are used to optimize the reduction conditions. The optimal residence time of the gas mixture in the reaction zone is 30–50 s. The optimal reduction temperature is 1023 K. Condensation temperatures in the range 600–650 K make it possible to minimize the percentage of amorphous arsenic. The yield of elemental arsenic is ≃99.99%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Inorganic Materials Springer Journals

Preparation of High-Purity Arsenic via Hydrogen Reduction of Arsenic Trichloride

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References (17)

Publisher
Springer Journals
Copyright
Copyright © 2003 by MAIK “Nauka/Interperiodica”
Subject
Chemistry; Inorganic Chemistry; Industrial Chemistry/Chemical Engineering
ISSN
0020-1685
eISSN
1608-3172
DOI
10.1023/A:1021878900691
Publisher site
See Article on Publisher Site

Abstract

The chemical equilibria involved in the hydrogen reduction of arsenic trichloride under reaction conditions of practical interest are assessed by thermodynamic modeling. Experimental data for high-purity arsenic trichloride are used to optimize the reduction conditions. The optimal residence time of the gas mixture in the reaction zone is 30–50 s. The optimal reduction temperature is 1023 K. Condensation temperatures in the range 600–650 K make it possible to minimize the percentage of amorphous arsenic. The yield of elemental arsenic is ≃99.99%.

Journal

Inorganic MaterialsSpringer Journals

Published: Oct 6, 2004

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