Progress on Noble Metal-Based Catalysts Dedicated to the Selective Catalytic Ammonia Oxidation into Nitrogen and Water Vapor (NH<sub>3</sub>-SCO)

Progress on Noble Metal-Based Catalysts Dedicated to the Selective Catalytic Ammonia Oxidation into Nitrogen and Water Vapor (NH<sub>3</sub>-SCO)

A recent development for selective ammonia oxidation into nitrogen and water vapor (NH<sub>3</sub>-SCO) over noble metal-based catalysts is covered in the mini-review. As ammonia (NH<sub>3</sub>) can harm human health and the environment, it led to stringent regulations by en...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Magdalena Jabłońska
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
Materias:
noble metals
supported oxides
bifunctional catalysts
NH<sub>3</sub>-SCO
Organic chemistry
QD241-441
Acceso en línea:https://doaj.org/article/172104282c4b4beca3c0cc4586f5aa5b
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:172104282c4b4beca3c0cc4586f5aa5b
record_format dspace
spelling oai:doaj.org-article:172104282c4b4beca3c0cc4586f5aa5b2021-11-11T18:28:14ZProgress on Noble Metal-Based Catalysts Dedicated to the Selective Catalytic Ammonia Oxidation into Nitrogen and Water Vapor (NH<sub>3</sub>-SCO)10.3390/molecules262164611420-3049https://doaj.org/article/172104282c4b4beca3c0cc4586f5aa5b2021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6461https://doaj.org/toc/1420-3049A recent development for selective ammonia oxidation into nitrogen and water vapor (NH<sub>3</sub>-SCO) over noble metal-based catalysts is covered in the mini-review. As ammonia (NH<sub>3</sub>) can harm human health and the environment, it led to stringent regulations by environmental agencies around the world. With the enforcement of the Euro VI emission standards, in which a limitation for NH<sub>3</sub> emissions is proposed, NH<sub>3</sub> emissions are becoming more and more of a concern. Noble metal-based catalysts (i.e., in the metallic form, noble metals supported on metal oxides or ion-exchanged zeolites, etc.) were rapidly found to possess high catalytic activity for NH<sub>3</sub> oxidation at low temperatures. Thus, a comprehensive discussion of property-activity correlations of the noble-based catalysts, including Pt-, Pd-, Ag- and Au-, Ru-based catalysts is given. Furthermore, due to the relatively narrow operating temperature window of full NH<sub>3</sub> conversion, high selectivity to N<sub>2</sub>O and NO<sub><i>x</i></sub> as well as high costs of noble metal-based catalysts, recent developments are aimed at combining the advantages of noble metals and transition metals. Thus, also a brief overview is provided about the design of the bifunctional catalysts (i.e., as dual-layer catalysts, mixed form (mechanical mixture), hybrid catalysts having dual-layer and mixed catalysts, core-shell structure, etc.). Finally, the general conclusions together with a discussion of promising research directions are provided.Magdalena JabłońskaMDPI AGarticlenoble metalssupported oxidesbifunctional catalystsNH<sub>3</sub>-SCOOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6461, p 6461 (2021)
institution DOAJ
collection DOAJ
language EN
topic noble metals
supported oxides
bifunctional catalysts
NH<sub>3</sub>-SCO
Organic chemistry
QD241-441
spellingShingle noble metals
supported oxides
bifunctional catalysts
NH<sub>3</sub>-SCO
Organic chemistry
QD241-441
Magdalena Jabłońska
Progress on Noble Metal-Based Catalysts Dedicated to the Selective Catalytic Ammonia Oxidation into Nitrogen and Water Vapor (NH<sub>3</sub>-SCO)
description A recent development for selective ammonia oxidation into nitrogen and water vapor (NH<sub>3</sub>-SCO) over noble metal-based catalysts is covered in the mini-review. As ammonia (NH<sub>3</sub>) can harm human health and the environment, it led to stringent regulations by environmental agencies around the world. With the enforcement of the Euro VI emission standards, in which a limitation for NH<sub>3</sub> emissions is proposed, NH<sub>3</sub> emissions are becoming more and more of a concern. Noble metal-based catalysts (i.e., in the metallic form, noble metals supported on metal oxides or ion-exchanged zeolites, etc.) were rapidly found to possess high catalytic activity for NH<sub>3</sub> oxidation at low temperatures. Thus, a comprehensive discussion of property-activity correlations of the noble-based catalysts, including Pt-, Pd-, Ag- and Au-, Ru-based catalysts is given. Furthermore, due to the relatively narrow operating temperature window of full NH<sub>3</sub> conversion, high selectivity to N<sub>2</sub>O and NO<sub><i>x</i></sub> as well as high costs of noble metal-based catalysts, recent developments are aimed at combining the advantages of noble metals and transition metals. Thus, also a brief overview is provided about the design of the bifunctional catalysts (i.e., as dual-layer catalysts, mixed form (mechanical mixture), hybrid catalysts having dual-layer and mixed catalysts, core-shell structure, etc.). Finally, the general conclusions together with a discussion of promising research directions are provided.
format article
author Magdalena Jabłońska
author_facet Magdalena Jabłońska
author_sort Magdalena Jabłońska
title Progress on Noble Metal-Based Catalysts Dedicated to the Selective Catalytic Ammonia Oxidation into Nitrogen and Water Vapor (NH<sub>3</sub>-SCO)
title_short Progress on Noble Metal-Based Catalysts Dedicated to the Selective Catalytic Ammonia Oxidation into Nitrogen and Water Vapor (NH<sub>3</sub>-SCO)
title_full Progress on Noble Metal-Based Catalysts Dedicated to the Selective Catalytic Ammonia Oxidation into Nitrogen and Water Vapor (NH<sub>3</sub>-SCO)
title_fullStr Progress on Noble Metal-Based Catalysts Dedicated to the Selective Catalytic Ammonia Oxidation into Nitrogen and Water Vapor (NH<sub>3</sub>-SCO)
title_full_unstemmed Progress on Noble Metal-Based Catalysts Dedicated to the Selective Catalytic Ammonia Oxidation into Nitrogen and Water Vapor (NH<sub>3</sub>-SCO)
title_sort progress on noble metal-based catalysts dedicated to the selective catalytic ammonia oxidation into nitrogen and water vapor (nh<sub>3</sub>-sco)
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/172104282c4b4beca3c0cc4586f5aa5b
work_keys_str_mv AT magdalenajabłonska progressonnoblemetalbasedcatalystsdedicatedtotheselectivecatalyticammoniaoxidationintonitrogenandwatervapornhsub3subsco
_version_ 1718431808316506112

Ejemplares similares