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Title: Kinetics of the dissolution of PSe/sub x/Te/sub y/ glasses in sodium hydroxide solutions

Abstract

In the present work, a study was carried out on the effect of solution concentration and temperature and the content of tellurium in PSe/sub 2.5/Te/sub x/ and PeSe/sub 4/Te/sub x/ glasses on their rate of dissolution in NaOh solutions. The glassy alloys were prepared by melting of the elemental substituents of semiconductor purity in vacuum. The melts were maintained for 4 h at a maximum temperature of 700/sup 0/C and tempered in the air. A preliminary study showed that PSe/sub x/Te/sub y/ glasses are virtually insoluble in dilute and concentrated nonoxidizing acid solutions. A study of the kinetic behavior of the dissolution of PSe/sub 2.5/PSe/sub 4/, PSe/sub 2.5/Te/sub x/, and PSe/sub 4/Te/sub x/ glasses with a tellurium content up to 40 at. % in NaOH solutions showed that the introduction of tellurium into phosphorus selenide glasses leads to a significant increase in their chemical stability. The dissolution of PSe/sub 2.5/, PSe/sub 2.5/Te/sub 0.4/, PSe/sub 4/Te/sub 0.6/, and PSe/sub 4/Te/sub 1.3/ glasses is limited by the rate of a heterogeneous chemical reaction with 16-17 kcal/mole activation energy. An increase in the concentration of both selenium and tellurium (above 20 at. %) in phosphorus selenide glasses is accompanied by loss of themore » molecularly dispersed nature of the dissolution process.« less

Authors:
; ;
Publication Date:
Research Org.:
Zhdanov Leningrad State University, USSR
OSTI Identifier:
5521987
Resource Type:
Journal Article
Journal Name:
J. Appl. Chem. USSR (Engl. Transl.); (United States)
Additional Journal Information:
Journal Volume: 55:8; Other Information: Translated from Zh. Prikl. Khim.; 55: No. 8, 1746-1749(Aug 1982)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; PHOSPHORUS COMPOUNDS; DISSOLUTION; SELENIDES; SEMICONDUCTOR MATERIALS; TELLURIDES; ACTIVATION ENERGY; CHEMICAL REACTION KINETICS; COMPARATIVE EVALUATIONS; GLASS; HIGH TEMPERATURE; SELENIUM; SODIUM HYDROXIDES; ALKALI METAL COMPOUNDS; CHALCOGENIDES; ELEMENTS; ENERGY; HYDROGEN COMPOUNDS; HYDROXIDES; KINETICS; MATERIALS; OXYGEN COMPOUNDS; REACTION KINETICS; SELENIUM COMPOUNDS; SEMIMETALS; SODIUM COMPOUNDS; TELLURIUM COMPOUNDS; 400201* - Chemical & Physicochemical Properties; 360600 - Other Materials

Citation Formats

Orlova, G M, Funtikov, V A, and Chudakovskaya, N M. Kinetics of the dissolution of PSe/sub x/Te/sub y/ glasses in sodium hydroxide solutions. United States: N. p., 1983. Web.
Orlova, G M, Funtikov, V A, & Chudakovskaya, N M. Kinetics of the dissolution of PSe/sub x/Te/sub y/ glasses in sodium hydroxide solutions. United States.
Orlova, G M, Funtikov, V A, and Chudakovskaya, N M. Thu . "Kinetics of the dissolution of PSe/sub x/Te/sub y/ glasses in sodium hydroxide solutions". United States.
@article{osti_5521987,
title = {Kinetics of the dissolution of PSe/sub x/Te/sub y/ glasses in sodium hydroxide solutions},
author = {Orlova, G M and Funtikov, V A and Chudakovskaya, N M},
abstractNote = {In the present work, a study was carried out on the effect of solution concentration and temperature and the content of tellurium in PSe/sub 2.5/Te/sub x/ and PeSe/sub 4/Te/sub x/ glasses on their rate of dissolution in NaOh solutions. The glassy alloys were prepared by melting of the elemental substituents of semiconductor purity in vacuum. The melts were maintained for 4 h at a maximum temperature of 700/sup 0/C and tempered in the air. A preliminary study showed that PSe/sub x/Te/sub y/ glasses are virtually insoluble in dilute and concentrated nonoxidizing acid solutions. A study of the kinetic behavior of the dissolution of PSe/sub 2.5/PSe/sub 4/, PSe/sub 2.5/Te/sub x/, and PSe/sub 4/Te/sub x/ glasses with a tellurium content up to 40 at. % in NaOH solutions showed that the introduction of tellurium into phosphorus selenide glasses leads to a significant increase in their chemical stability. The dissolution of PSe/sub 2.5/, PSe/sub 2.5/Te/sub 0.4/, PSe/sub 4/Te/sub 0.6/, and PSe/sub 4/Te/sub 1.3/ glasses is limited by the rate of a heterogeneous chemical reaction with 16-17 kcal/mole activation energy. An increase in the concentration of both selenium and tellurium (above 20 at. %) in phosphorus selenide glasses is accompanied by loss of the molecularly dispersed nature of the dissolution process.},
doi = {},
journal = {J. Appl. Chem. USSR (Engl. Transl.); (United States)},
number = ,
volume = 55:8,
place = {United States},
year = {1983},
month = {1}
}