Reductive Dechlorination of Chloroacetamides with NaBH<sub>4</sub> Catalyzed by Zero Valent Iron, ZVI, Nanoparticles in ORMOSIL Matrices Prepared via the Sol-Gel Route
The efficient reductive dechlorination, as remediation of dichloroacetamide and monochloroacetamide, toxic and abundant pollutants, using sodium borohydride catalyzed by zero valent iron nanoparticles (ZVI-NPs), entrapped in organically modified hybrid silica matrices prepared via the sol-gel route,...
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| Format: | Article |
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MDPI AG
2020-09-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/10/9/986 |
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| author | Michael Meistelman Dan Meyerstein Amos Bardea Ariela Burg Dror Shamir Yael Albo |
| author_facet | Michael Meistelman Dan Meyerstein Amos Bardea Ariela Burg Dror Shamir Yael Albo |
| author_sort | Michael Meistelman |
| collection | DOAJ |
| description | The efficient reductive dechlorination, as remediation of dichloroacetamide and monochloroacetamide, toxic and abundant pollutants, using sodium borohydride catalyzed by zero valent iron nanoparticles (ZVI-NPs), entrapped in organically modified hybrid silica matrices prepared via the sol-gel route, ZVI@ORMOSIL, is demonstrated. The results indicate that the extent of the dechlorination reaction depends on the nature of the substrate and on the reaction medium. By varying the amount of catalyst or reductant in the reaction it was possible to obtain conditions for full dechlorination of these pollutants to nontoxic acetamide and acetic acid. A plausible mechanism of the catalytic process is discussed. The present work expands the scope of ZVI-NP catalyzed reduction of polluting compounds, first reports the catalytic parameters of chloroacetamide reduction, and offers additional insight into the heterogeneous catalyst structure of M<sup>0</sup>@ORMOSIL sol-gel. The ZVI@ORMOSIL catalyst is ferromagnetic and hence can be recycled easily. |
| first_indexed | 2024-03-10T16:39:30Z |
| format | Article |
| id | doaj.art-250a75b7b34d4f79adf5459ea2314568 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T16:39:30Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-250a75b7b34d4f79adf5459ea23145682023-11-20T12:06:54ZengMDPI AGCatalysts2073-43442020-09-0110998610.3390/catal10090986Reductive Dechlorination of Chloroacetamides with NaBH<sub>4</sub> Catalyzed by Zero Valent Iron, ZVI, Nanoparticles in ORMOSIL Matrices Prepared via the Sol-Gel RouteMichael Meistelman0Dan Meyerstein1Amos Bardea2Ariela Burg3Dror Shamir4Yael Albo5Chemical Engineering Dept. and The Centre for Radical Reactions, Ariel University, Ariel 4070000, IsraelDepartment of Chemical Sciences and The Centre for Radical Reactions, Ariel University, Ariel 4070000, IsraelFaculty of Engineering, Holon Institute of Technology (HIT), Holon 5810201, IsraelDepartment of Chemical Engineering, Shamoon College of Engineering, Beer-Sheva 8410802, IsraelDepartment of Chemistry, Nuclear Research Centre Negev, Beer-Sheva 8419001, IsraelChemical Engineering Dept. and The Centre for Radical Reactions, Ariel University, Ariel 4070000, IsraelThe efficient reductive dechlorination, as remediation of dichloroacetamide and monochloroacetamide, toxic and abundant pollutants, using sodium borohydride catalyzed by zero valent iron nanoparticles (ZVI-NPs), entrapped in organically modified hybrid silica matrices prepared via the sol-gel route, ZVI@ORMOSIL, is demonstrated. The results indicate that the extent of the dechlorination reaction depends on the nature of the substrate and on the reaction medium. By varying the amount of catalyst or reductant in the reaction it was possible to obtain conditions for full dechlorination of these pollutants to nontoxic acetamide and acetic acid. A plausible mechanism of the catalytic process is discussed. The present work expands the scope of ZVI-NP catalyzed reduction of polluting compounds, first reports the catalytic parameters of chloroacetamide reduction, and offers additional insight into the heterogeneous catalyst structure of M<sup>0</sup>@ORMOSIL sol-gel. The ZVI@ORMOSIL catalyst is ferromagnetic and hence can be recycled easily.https://www.mdpi.com/2073-4344/10/9/986catalysiszero valent ironde-chlorinationborohydridesol-gelferromagnetic |
| spellingShingle | Michael Meistelman Dan Meyerstein Amos Bardea Ariela Burg Dror Shamir Yael Albo Reductive Dechlorination of Chloroacetamides with NaBH<sub>4</sub> Catalyzed by Zero Valent Iron, ZVI, Nanoparticles in ORMOSIL Matrices Prepared via the Sol-Gel Route Catalysts catalysis zero valent iron de-chlorination borohydride sol-gel ferromagnetic |
| title | Reductive Dechlorination of Chloroacetamides with NaBH<sub>4</sub> Catalyzed by Zero Valent Iron, ZVI, Nanoparticles in ORMOSIL Matrices Prepared via the Sol-Gel Route |
| title_full | Reductive Dechlorination of Chloroacetamides with NaBH<sub>4</sub> Catalyzed by Zero Valent Iron, ZVI, Nanoparticles in ORMOSIL Matrices Prepared via the Sol-Gel Route |
| title_fullStr | Reductive Dechlorination of Chloroacetamides with NaBH<sub>4</sub> Catalyzed by Zero Valent Iron, ZVI, Nanoparticles in ORMOSIL Matrices Prepared via the Sol-Gel Route |
| title_full_unstemmed | Reductive Dechlorination of Chloroacetamides with NaBH<sub>4</sub> Catalyzed by Zero Valent Iron, ZVI, Nanoparticles in ORMOSIL Matrices Prepared via the Sol-Gel Route |
| title_short | Reductive Dechlorination of Chloroacetamides with NaBH<sub>4</sub> Catalyzed by Zero Valent Iron, ZVI, Nanoparticles in ORMOSIL Matrices Prepared via the Sol-Gel Route |
| title_sort | reductive dechlorination of chloroacetamides with nabh sub 4 sub catalyzed by zero valent iron zvi nanoparticles in ormosil matrices prepared via the sol gel route |
| topic | catalysis zero valent iron de-chlorination borohydride sol-gel ferromagnetic |
| url | https://www.mdpi.com/2073-4344/10/9/986 |
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