Synthesis of a SiO<inf>2</inf>/Co(OH)<inf>2</inf> Nanocomposite Catalyst for SO<inf>X</inf>/NO<inf>X</inf> Oxidation in Flue Gas

Sulfur and nitrogen oxides (SOX/NOX) are the primary air toxic gas pollutants emitted during fuel combustion, causing health and environmental concerns. Therefore, their emission in flue gases is strictly regulated. The existing technologies used to decrease SOX/NOX content are flue gas desulfurizat...

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Detalhes bibliográficos
Autores: Khabra, Alon, Cohen, Haim, Pinhasi, Gad A., Querol, Xavier, Córdoba, Patricia, Zidki, Tomer
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/361387
Acesso em linha:http://hdl.handle.net/10261/361387
https://api.elsevier.com/content/abstract/scopus_id/85146420639
Access Level:acceso abierto
Palavra-chave:Wet scrubber
Fertilizer manufacturing
Nanocomposite oxidation catalyst
NO oxidation X
SO oxidation X
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
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spelling Synthesis of a SiO<inf>2</inf>/Co(OH)<inf>2</inf> Nanocomposite Catalyst for SO<inf>X</inf>/NO<inf>X</inf> Oxidation in Flue GasKhabra, AlonCohen, HaimPinhasi, Gad A.Querol, XavierCórdoba, PatriciaZidki, TomerWet scrubberFertilizer manufacturingNanocomposite oxidation catalystNO oxidation XSO oxidation Xhttp://metadata.un.org/sdg/9Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovationSulfur and nitrogen oxides (SOX/NOX) are the primary air toxic gas pollutants emitted during fuel combustion, causing health and environmental concerns. Therefore, their emission in flue gases is strictly regulated. The existing technologies used to decrease SOX/NOX content are flue gas desulfurization, which necessitates high capital and operating costs, and selective catalytic reduction, which, in addition to these costs, requires expensive catalysts and high operating temperatures (350–400 °C). New wet scrubbing processes use O3 or H2O2 oxidants to produce (NH4)2SO4 and NH4NO3 fertilizers upon ammonia injection. However, these oxidants are expensive, corrosive, and hazardous. SiO2/Co(OH)2 nanocomposites are presented here as potential catalysts for SOX/NOX oxidation in wet scrubber reactors to scrub these toxic gases using atmospheric oxygen as the oxidant at relatively low temperatures of 60–90 °C. Several silica-cobalt-oxide-based nanocomposites were synthesized as potential catalysts at different concentrations and temperatures. The nanocomposite catalysts were characterized and exhibited excellent catalytic properties for SOX/NOX oxidation using atmospheric oxygen as the oxidant, replacing the problematic H2O2/O3. We thus propose SiO2-supported Co(OH)2 nanoparticles (NPs) as excellent catalysts for the simultaneous scrubbing of polluting SOX/NOX gases in flue gases using atmospheric O2 as the oxidation reagent at a relatively low-temperature range.This work was supported by the Israel Innovation Authority “Kamin” program [grant number #55299].Peer reviewedMultidisciplinary Digital Publishing Institute0000-0003-0310-13950000-0003-4098-87650000-0003-3112-67760000-0003-0596-43540000-0001-5103-6239Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/361387https://api.elsevier.com/content/abstract/scopus_id/85146420639reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCatalystshttps://doi.org/10.3390/catal13010029Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3613872026-05-22T06:33:51Z
dc.title.none.fl_str_mv Synthesis of a SiO<inf>2</inf>/Co(OH)<inf>2</inf> Nanocomposite Catalyst for SO<inf>X</inf>/NO<inf>X</inf> Oxidation in Flue Gas
title Synthesis of a SiO<inf>2</inf>/Co(OH)<inf>2</inf> Nanocomposite Catalyst for SO<inf>X</inf>/NO<inf>X</inf> Oxidation in Flue Gas
spellingShingle Synthesis of a SiO<inf>2</inf>/Co(OH)<inf>2</inf> Nanocomposite Catalyst for SO<inf>X</inf>/NO<inf>X</inf> Oxidation in Flue Gas
Khabra, Alon
Wet scrubber
Fertilizer manufacturing
Nanocomposite oxidation catalyst
NO oxidation X
SO oxidation X
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
title_short Synthesis of a SiO<inf>2</inf>/Co(OH)<inf>2</inf> Nanocomposite Catalyst for SO<inf>X</inf>/NO<inf>X</inf> Oxidation in Flue Gas
title_full Synthesis of a SiO<inf>2</inf>/Co(OH)<inf>2</inf> Nanocomposite Catalyst for SO<inf>X</inf>/NO<inf>X</inf> Oxidation in Flue Gas
title_fullStr Synthesis of a SiO<inf>2</inf>/Co(OH)<inf>2</inf> Nanocomposite Catalyst for SO<inf>X</inf>/NO<inf>X</inf> Oxidation in Flue Gas
title_full_unstemmed Synthesis of a SiO<inf>2</inf>/Co(OH)<inf>2</inf> Nanocomposite Catalyst for SO<inf>X</inf>/NO<inf>X</inf> Oxidation in Flue Gas
title_sort Synthesis of a SiO<inf>2</inf>/Co(OH)<inf>2</inf> Nanocomposite Catalyst for SO<inf>X</inf>/NO<inf>X</inf> Oxidation in Flue Gas
dc.creator.none.fl_str_mv Khabra, Alon
Cohen, Haim
Pinhasi, Gad A.
Querol, Xavier
Córdoba, Patricia
Zidki, Tomer
author Khabra, Alon
author_facet Khabra, Alon
Cohen, Haim
Pinhasi, Gad A.
Querol, Xavier
Córdoba, Patricia
Zidki, Tomer
author_role author
author2 Cohen, Haim
Pinhasi, Gad A.
Querol, Xavier
Córdoba, Patricia
Zidki, Tomer
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv 0000-0003-0310-1395
0000-0003-4098-8765
0000-0003-3112-6776
0000-0003-0596-4354
0000-0001-5103-6239
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Wet scrubber
Fertilizer manufacturing
Nanocomposite oxidation catalyst
NO oxidation X
SO oxidation X
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
topic Wet scrubber
Fertilizer manufacturing
Nanocomposite oxidation catalyst
NO oxidation X
SO oxidation X
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
description Sulfur and nitrogen oxides (SOX/NOX) are the primary air toxic gas pollutants emitted during fuel combustion, causing health and environmental concerns. Therefore, their emission in flue gases is strictly regulated. The existing technologies used to decrease SOX/NOX content are flue gas desulfurization, which necessitates high capital and operating costs, and selective catalytic reduction, which, in addition to these costs, requires expensive catalysts and high operating temperatures (350–400 °C). New wet scrubbing processes use O3 or H2O2 oxidants to produce (NH4)2SO4 and NH4NO3 fertilizers upon ammonia injection. However, these oxidants are expensive, corrosive, and hazardous. SiO2/Co(OH)2 nanocomposites are presented here as potential catalysts for SOX/NOX oxidation in wet scrubber reactors to scrub these toxic gases using atmospheric oxygen as the oxidant at relatively low temperatures of 60–90 °C. Several silica-cobalt-oxide-based nanocomposites were synthesized as potential catalysts at different concentrations and temperatures. The nanocomposite catalysts were characterized and exhibited excellent catalytic properties for SOX/NOX oxidation using atmospheric oxygen as the oxidant, replacing the problematic H2O2/O3. We thus propose SiO2-supported Co(OH)2 nanoparticles (NPs) as excellent catalysts for the simultaneous scrubbing of polluting SOX/NOX gases in flue gases using atmospheric O2 as the oxidation reagent at a relatively low-temperature range.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/361387
https://api.elsevier.com/content/abstract/scopus_id/85146420639
url http://hdl.handle.net/10261/361387
https://api.elsevier.com/content/abstract/scopus_id/85146420639
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Catalysts
https://doi.org/10.3390/catal13010029
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.228081

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