Applicability of Nickel-Based Catalytic Systems for Hydrodehalogenation of Recalcitrant Halogenated Aromatic Compounds

This review summarizes recent applications of nickel as a nonprecious metal catalyst in hydrodehalogenation (HDH) reactions of halogenated aromatic compounds (Ar–Xs). Nickel-based HDH catalysts were developed for reductive treatment of both waste containing concentrated Ar–Xs (mainly polychlorinated...

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Main Author: Tomáš Weidlich
Format: Article
Language:English
Published: MDPI AG 2021-11-01
Series:Catalysts
Subjects:
Online Access:https://www.mdpi.com/2073-4344/11/12/1465
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author Tomáš Weidlich
author_facet Tomáš Weidlich
author_sort Tomáš Weidlich
collection DOAJ
description This review summarizes recent applications of nickel as a nonprecious metal catalyst in hydrodehalogenation (HDH) reactions of halogenated aromatic compounds (Ar–Xs). Nickel-based HDH catalysts were developed for reductive treatment of both waste containing concentrated Ar–Xs (mainly polychlorinated benzenes) and for wastewater contaminated with Ar–Xs. Ni-catalyzed HDH enables the production of corresponding nonhalogenated aromatic products (Ar–Hs), which are principally further applicable/recyclable and/or Ar–Hs, which are much more biodegradable and can be mineralized during aerobic wastewater treatment. Developed HDH methods enable the utilization of both gaseous hydrogen via the direct HDH process or other chemical reductants as a source of hydrogen utilized in the transfer of the hydrodehalogenation process. This review highlights recent and major developments in Ni-catalyzed hydrodehalogenation topic since 1990.
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spelling doaj.art-7342298f0f694daf91a4e9a22b3c93c92023-11-23T04:09:24ZengMDPI AGCatalysts2073-43442021-11-011112146510.3390/catal11121465Applicability of Nickel-Based Catalytic Systems for Hydrodehalogenation of Recalcitrant Halogenated Aromatic CompoundsTomáš Weidlich0Chemical Technology Group, Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech RepublicThis review summarizes recent applications of nickel as a nonprecious metal catalyst in hydrodehalogenation (HDH) reactions of halogenated aromatic compounds (Ar–Xs). Nickel-based HDH catalysts were developed for reductive treatment of both waste containing concentrated Ar–Xs (mainly polychlorinated benzenes) and for wastewater contaminated with Ar–Xs. Ni-catalyzed HDH enables the production of corresponding nonhalogenated aromatic products (Ar–Hs), which are principally further applicable/recyclable and/or Ar–Hs, which are much more biodegradable and can be mineralized during aerobic wastewater treatment. Developed HDH methods enable the utilization of both gaseous hydrogen via the direct HDH process or other chemical reductants as a source of hydrogen utilized in the transfer of the hydrodehalogenation process. This review highlights recent and major developments in Ni-catalyzed hydrodehalogenation topic since 1990.https://www.mdpi.com/2073-4344/11/12/1465hydrodehalogenationhydrodechlorinationnickelbimetallic systemsnanocatalystsAl–Ni
spellingShingle Tomáš Weidlich
Applicability of Nickel-Based Catalytic Systems for Hydrodehalogenation of Recalcitrant Halogenated Aromatic Compounds
Catalysts
hydrodehalogenation
hydrodechlorination
nickel
bimetallic systems
nanocatalysts
Al–Ni
title Applicability of Nickel-Based Catalytic Systems for Hydrodehalogenation of Recalcitrant Halogenated Aromatic Compounds
title_full Applicability of Nickel-Based Catalytic Systems for Hydrodehalogenation of Recalcitrant Halogenated Aromatic Compounds
title_fullStr Applicability of Nickel-Based Catalytic Systems for Hydrodehalogenation of Recalcitrant Halogenated Aromatic Compounds
title_full_unstemmed Applicability of Nickel-Based Catalytic Systems for Hydrodehalogenation of Recalcitrant Halogenated Aromatic Compounds
title_short Applicability of Nickel-Based Catalytic Systems for Hydrodehalogenation of Recalcitrant Halogenated Aromatic Compounds
title_sort applicability of nickel based catalytic systems for hydrodehalogenation of recalcitrant halogenated aromatic compounds
topic hydrodehalogenation
hydrodechlorination
nickel
bimetallic systems
nanocatalysts
Al–Ni
url https://www.mdpi.com/2073-4344/11/12/1465
work_keys_str_mv AT tomasweidlich applicabilityofnickelbasedcatalyticsystemsforhydrodehalogenationofrecalcitranthalogenatedaromaticcompounds