Behavior of As/Asx Sy in Neutral and Oxidizing Atmospheres at High Temperatures—An Overview

Kristhobal Castro; Eduardo Balladares; Oscar Jerez; Manuel Pérez-Tello; Álvaro Aracena

doi:10.3390/met12030457

Behavior of As/As_x S_y in Neutral and Oxidizing Atmospheres at High Temperatures—An Overview

Kristhobal Castro, Eduardo Balladares, Oscar Jerez, Manuel Pérez-Tello, Álvaro Aracena^*

^*Corresponding author for this work

Departamento de Ingeniería Química y Metalurgia

Research output: Contribution to journal › Review article › peer-review

5 Scopus citations

Abstract

The reaction mechanisms in As and As-S systems during their oxidation and/or thermal decomposition are complex to describe due to the physicochemical characteristics of arsenic and its sulfides; the information highlighted in the literature was analyzed and correlated to determinate the predominant phases and reaction mechanisms during the thermal decomposition and oxidation of arsenic, in its elemental form and in sulfurate phases. As a result of this analysis, it was determined that the predominant phases are mainly composed of allotropies of arsenic, sulfides, and dimers. In addition, reaction mechanisms are provided that describe the behavior of arsenic and its sulfides during its thermal decomposition and oxidation.

Original language	English
Article number	457
Journal	Metals
Volume	12
Issue number	3
DOIs	https://doi.org/10.3390/met12030457
State	Published - Mar 2022

Bibliographical note

Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Arsenic sulfide
Oxidation
Reaction mechanisms
Roasting
Thermal decomposition

Access to Document

10.3390/met12030457

Cite this

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title = "Behavior of As/Asx Sy in Neutral and Oxidizing Atmospheres at High Temperatures—An Overview",

abstract = "The reaction mechanisms in As and As-S systems during their oxidation and/or thermal decomposition are complex to describe due to the physicochemical characteristics of arsenic and its sulfides; the information highlighted in the literature was analyzed and correlated to determinate the predominant phases and reaction mechanisms during the thermal decomposition and oxidation of arsenic, in its elemental form and in sulfurate phases. As a result of this analysis, it was determined that the predominant phases are mainly composed of allotropies of arsenic, sulfides, and dimers. In addition, reaction mechanisms are provided that describe the behavior of arsenic and its sulfides during its thermal decomposition and oxidation.",

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AU - Castro, Kristhobal

AU - Balladares, Eduardo

AU - Jerez, Oscar

AU - Pérez-Tello, Manuel

AU - Aracena, Álvaro

PY - 2022/3

Y1 - 2022/3

N2 - The reaction mechanisms in As and As-S systems during their oxidation and/or thermal decomposition are complex to describe due to the physicochemical characteristics of arsenic and its sulfides; the information highlighted in the literature was analyzed and correlated to determinate the predominant phases and reaction mechanisms during the thermal decomposition and oxidation of arsenic, in its elemental form and in sulfurate phases. As a result of this analysis, it was determined that the predominant phases are mainly composed of allotropies of arsenic, sulfides, and dimers. In addition, reaction mechanisms are provided that describe the behavior of arsenic and its sulfides during its thermal decomposition and oxidation.

AB - The reaction mechanisms in As and As-S systems during their oxidation and/or thermal decomposition are complex to describe due to the physicochemical characteristics of arsenic and its sulfides; the information highlighted in the literature was analyzed and correlated to determinate the predominant phases and reaction mechanisms during the thermal decomposition and oxidation of arsenic, in its elemental form and in sulfurate phases. As a result of this analysis, it was determined that the predominant phases are mainly composed of allotropies of arsenic, sulfides, and dimers. In addition, reaction mechanisms are provided that describe the behavior of arsenic and its sulfides during its thermal decomposition and oxidation.

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KW - Oxidation

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KW - Roasting

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