The autooxidation of hydrogen sulfide in the presence of hematite

The kinetics of the catalyzed autoxidation of hydrogen sulfide to sulfate and thiosulfate has been investigated in the pH range 5.0-7.0. The concentration of H2S was varied between 1.35 and 2.02x10-3 M, and that of O2 between 3.4 10-5 and 1.35 10-4 M. The catalytic effect of the α-Fe2O3 has been obs...

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Autores principales:	Herszage, J., Dos Santos Afonso, M.
Formato:	JOUR
Materias:	Autoxidation Hematite Hydrogen sulfide Kinetics ferric oxide hydrogen sulfide oxygen sulfate thiosulfate article autooxidation dissolution electron transport kinetics pH pressure priority journal transmission electron microscopy
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_09277757_v168_n1_p61_Herszage
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_09277757_v168_n1_p61_Herszage
record_format	dspace
spelling	todo:paper_09277757_v168_n1_p61_Herszage2023-10-03T15:47:06Z The autooxidation of hydrogen sulfide in the presence of hematite Herszage, J. Dos Santos Afonso, M. Autoxidation Hematite Hydrogen sulfide Kinetics ferric oxide hydrogen sulfide oxygen sulfate thiosulfate article autooxidation dissolution electron transport kinetics pH pressure priority journal transmission electron microscopy The kinetics of the catalyzed autoxidation of hydrogen sulfide to sulfate and thiosulfate has been investigated in the pH range 5.0-7.0. The concentration of H2S was varied between 1.35 and 2.02x10-3 M, and that of O2 between 3.4 10-5 and 1.35 10-4 M. The catalytic effect of the α-Fe2O3 has been observed. Experimental data suggest that the catalyzed reaction proceeds via the formation of two different inner sphere surface complexes ≡Fe(III)S- and ≡Fe(III)SH. Four oxidized surface complexes ≡Fe(III)SO2 -, ≡Fe(III)S2O- ≡Fe(III)SO4 -, and ≡Fe(III)S2O3 - has been postulated to explain the formation of sulfate and thiosulfate that are released into the solution without a further electron transfer to the surface. Fit parameters for the equations describing the distribution of the oxidation products are obtained. Copyright (C) 2000 Elsevier Science B.V. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09277757_v168_n1_p61_Herszage
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Autoxidation Hematite Hydrogen sulfide Kinetics ferric oxide hydrogen sulfide oxygen sulfate thiosulfate article autooxidation dissolution electron transport kinetics pH pressure priority journal transmission electron microscopy
spellingShingle	Autoxidation Hematite Hydrogen sulfide Kinetics ferric oxide hydrogen sulfide oxygen sulfate thiosulfate article autooxidation dissolution electron transport kinetics pH pressure priority journal transmission electron microscopy Herszage, J. Dos Santos Afonso, M. The autooxidation of hydrogen sulfide in the presence of hematite
topic_facet	Autoxidation Hematite Hydrogen sulfide Kinetics ferric oxide hydrogen sulfide oxygen sulfate thiosulfate article autooxidation dissolution electron transport kinetics pH pressure priority journal transmission electron microscopy
description	The kinetics of the catalyzed autoxidation of hydrogen sulfide to sulfate and thiosulfate has been investigated in the pH range 5.0-7.0. The concentration of H2S was varied between 1.35 and 2.02x10-3 M, and that of O2 between 3.4 10-5 and 1.35 10-4 M. The catalytic effect of the α-Fe2O3 has been observed. Experimental data suggest that the catalyzed reaction proceeds via the formation of two different inner sphere surface complexes ≡Fe(III)S- and ≡Fe(III)SH. Four oxidized surface complexes ≡Fe(III)SO2 -, ≡Fe(III)S2O- ≡Fe(III)SO4 -, and ≡Fe(III)S2O3 - has been postulated to explain the formation of sulfate and thiosulfate that are released into the solution without a further electron transfer to the surface. Fit parameters for the equations describing the distribution of the oxidation products are obtained. Copyright (C) 2000 Elsevier Science B.V.
format	JOUR
author	Herszage, J. Dos Santos Afonso, M.
author_facet	Herszage, J. Dos Santos Afonso, M.
author_sort	Herszage, J.
title	The autooxidation of hydrogen sulfide in the presence of hematite
title_short	The autooxidation of hydrogen sulfide in the presence of hematite
title_full	The autooxidation of hydrogen sulfide in the presence of hematite
title_fullStr	The autooxidation of hydrogen sulfide in the presence of hematite
title_full_unstemmed	The autooxidation of hydrogen sulfide in the presence of hematite
title_sort	autooxidation of hydrogen sulfide in the presence of hematite
url	http://hdl.handle.net/20.500.12110/paper_09277757_v168_n1_p61_Herszage
work_keys_str_mv	AT herszagej theautooxidationofhydrogensulfideinthepresenceofhematite AT dossantosafonsom theautooxidationofhydrogensulfideinthepresenceofhematite AT herszagej autooxidationofhydrogensulfideinthepresenceofhematite AT dossantosafonsom autooxidationofhydrogensulfideinthepresenceofhematite
_version_	1782024731035172864

The autooxidation of hydrogen sulfide in the presence of hematite

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