Development of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution

Cellulose grains were carbonized and applied as catalyst supports for nickel- and magnetite-promoted bimetallic palladium- and platinum-containing catalysts. The bimetallic spherical aggregates of Pd and Pt particles were created to enhance the synergistic effect among the precious metals during cat...

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Autores principales:	Emőke Sikora, Dániel Koncz-Horváth, Gábor Muránszky, Ferenc Kristály, Béla Fiser, Béla Viskolcz, László Vanyorek
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Pd–Pt clusters chlorate reduction magnetite Biology (General) QH301-705.5 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/49c7e90747be4a50952baaf4935ba8b5
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spelling	oai:doaj.org-article:49c7e90747be4a50952baaf4935ba8b52021-11-11T17:16:37ZDevelopment of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution10.3390/ijms2221118461422-00671661-6596https://doaj.org/article/49c7e90747be4a50952baaf4935ba8b52021-10-01T00:00:00Zhttps://www.mdpi.com/1422-0067/22/21/11846https://doaj.org/toc/1661-6596https://doaj.org/toc/1422-0067Cellulose grains were carbonized and applied as catalyst supports for nickel- and magnetite-promoted bimetallic palladium- and platinum-containing catalysts. The bimetallic spherical aggregates of Pd and Pt particles were created to enhance the synergistic effect among the precious metals during catalytic processes. As a first step, the cellulose bead-based supports were impregnated by nitrate salts of nickel and iron and carbonized at 973 K. After this step, the nickel was in an elemental state, while the iron was in a magnetite form in the corresponding supports. Then, Pd and Pt particles were deposited onto the supports and the catalyst surface; precious metal nanoparticles (10–20 nm) were clustered inside spherical aggregated particles 500–600 nm in size. The final bimetallic catalysts (i.e., Pd–Pt/CCB, Pd–Pt/Ni–CCB, and Pd–Pt/Fe<sub>3</sub>O<sub>4</sub>–CCB) were tested in hydrogenation of chlorate ions in the aqueous phase. For the nickel-promoted Pd–Pt catalyst, a >99% chlorate conversion was reached after 45 min at 80 °C. In contrast, the magnetite-promoted sample reached an 84.6% chlorate conversion after 3 h. Reuse tests were also carried out with the catalysts, and in the case of Pd–Pt/Ni–CCB after five cycles, the catalytic activity only decreased by ~7% which proves the stability of the system.Emőke SikoraDániel Koncz-HorváthGábor MuránszkyFerenc KristályBéla FiserBéla ViskolczLászló VanyorekMDPI AGarticlePd–Pt clusterschlorate reductionmagnetiteBiology (General)QH301-705.5ChemistryQD1-999ENInternational Journal of Molecular Sciences, Vol 22, Iss 11846, p 11846 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Pd–Pt clusters chlorate reduction magnetite Biology (General) QH301-705.5 Chemistry QD1-999
spellingShingle	Pd–Pt clusters chlorate reduction magnetite Biology (General) QH301-705.5 Chemistry QD1-999 Emőke Sikora Dániel Koncz-Horváth Gábor Muránszky Ferenc Kristály Béla Fiser Béla Viskolcz László Vanyorek Development of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution
description	Cellulose grains were carbonized and applied as catalyst supports for nickel- and magnetite-promoted bimetallic palladium- and platinum-containing catalysts. The bimetallic spherical aggregates of Pd and Pt particles were created to enhance the synergistic effect among the precious metals during catalytic processes. As a first step, the cellulose bead-based supports were impregnated by nitrate salts of nickel and iron and carbonized at 973 K. After this step, the nickel was in an elemental state, while the iron was in a magnetite form in the corresponding supports. Then, Pd and Pt particles were deposited onto the supports and the catalyst surface; precious metal nanoparticles (10–20 nm) were clustered inside spherical aggregated particles 500–600 nm in size. The final bimetallic catalysts (i.e., Pd–Pt/CCB, Pd–Pt/Ni–CCB, and Pd–Pt/Fe<sub>3</sub>O<sub>4</sub>–CCB) were tested in hydrogenation of chlorate ions in the aqueous phase. For the nickel-promoted Pd–Pt catalyst, a >99% chlorate conversion was reached after 45 min at 80 °C. In contrast, the magnetite-promoted sample reached an 84.6% chlorate conversion after 3 h. Reuse tests were also carried out with the catalysts, and in the case of Pd–Pt/Ni–CCB after five cycles, the catalytic activity only decreased by ~7% which proves the stability of the system.
format	article
author	Emőke Sikora Dániel Koncz-Horváth Gábor Muránszky Ferenc Kristály Béla Fiser Béla Viskolcz László Vanyorek
author_facet	Emőke Sikora Dániel Koncz-Horváth Gábor Muránszky Ferenc Kristály Béla Fiser Béla Viskolcz László Vanyorek
author_sort	Emőke Sikora
title	Development of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution
title_short	Development of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution
title_full	Development of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution
title_fullStr	Development of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution
title_full_unstemmed	Development of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution
title_sort	development of nickel- and magnetite-promoted carbonized cellulose bead-supported bimetallic pd–pt catalysts for hydrogenation of chlorate ions in aqueous solution
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/49c7e90747be4a50952baaf4935ba8b5
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Development of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution

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