The Effect of Thermal Treatment under Different Atmospheric Conditions on the Catalytic Performance of Nickel Supported on Porous Silica in the Gas-Phase Hydrogenation of Acetonitrile
A series of mesoporous silica-supported nickel catalysts (2.2 wt% Ni) were prepared by impregnation employing the incipient wetness technique using Ni(II) formate as the impregnation salt. Three different atmospheric conditions were employed during the thermal treatment: air, He and H 2 . The cataly...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2007-04-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361707782398218 |
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| author | Pilar Braos-García Desireé Durán-Martín Antonia Infantes-Molina Dolores Eliche-Quesada Enrique Rodríguez-Castellón Antonio Jiménez-López |
| author_facet | Pilar Braos-García Desireé Durán-Martín Antonia Infantes-Molina Dolores Eliche-Quesada Enrique Rodríguez-Castellón Antonio Jiménez-López |
| author_sort | Pilar Braos-García |
| collection | DOAJ |
| description | A series of mesoporous silica-supported nickel catalysts (2.2 wt% Ni) were prepared by impregnation employing the incipient wetness technique using Ni(II) formate as the impregnation salt. Three different atmospheric conditions were employed during the thermal treatment: air, He and H 2 . The catalysts were characterised by chemical analysis, XRD, N 2 adsorption at −196°C, H 2 -TPR, H 2 -TPD and XPS. A direct relationship was found between catalytic activity in the gas-phase hydrogenation of acetonitrile and the Ni 2p 3/2 binding energy assigned to the Ni 0 atoms of the reduced catalysts, where the catalytic activity decreased with increasing binding energy. The best catalyst obtained was that prepared by thermal decomposition in air and subsequent reduction in a hydrogen atmosphere; this catalyst displayed a high metallic surface and a low value for the Ni 2p 3/2 binding energy of Ni 0 . |
| format | Article |
| id | doaj-art-f8ec34b3477741239e69971695c9ee2d |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2007-04-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-f8ec34b3477741239e69971695c9ee2d2025-01-02T22:38:06ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382007-04-012510.1260/026361707782398218The Effect of Thermal Treatment under Different Atmospheric Conditions on the Catalytic Performance of Nickel Supported on Porous Silica in the Gas-Phase Hydrogenation of AcetonitrilePilar Braos-GarcíaDesireé Durán-MartínAntonia Infantes-MolinaDolores Eliche-QuesadaEnrique Rodríguez-CastellónAntonio Jiménez-LópezA series of mesoporous silica-supported nickel catalysts (2.2 wt% Ni) were prepared by impregnation employing the incipient wetness technique using Ni(II) formate as the impregnation salt. Three different atmospheric conditions were employed during the thermal treatment: air, He and H 2 . The catalysts were characterised by chemical analysis, XRD, N 2 adsorption at −196°C, H 2 -TPR, H 2 -TPD and XPS. A direct relationship was found between catalytic activity in the gas-phase hydrogenation of acetonitrile and the Ni 2p 3/2 binding energy assigned to the Ni 0 atoms of the reduced catalysts, where the catalytic activity decreased with increasing binding energy. The best catalyst obtained was that prepared by thermal decomposition in air and subsequent reduction in a hydrogen atmosphere; this catalyst displayed a high metallic surface and a low value for the Ni 2p 3/2 binding energy of Ni 0 .https://doi.org/10.1260/026361707782398218 |
| spellingShingle | Pilar Braos-García Desireé Durán-Martín Antonia Infantes-Molina Dolores Eliche-Quesada Enrique Rodríguez-Castellón Antonio Jiménez-López The Effect of Thermal Treatment under Different Atmospheric Conditions on the Catalytic Performance of Nickel Supported on Porous Silica in the Gas-Phase Hydrogenation of Acetonitrile Adsorption Science & Technology |
| title | The Effect of Thermal Treatment under Different Atmospheric Conditions on the Catalytic Performance of Nickel Supported on Porous Silica in the Gas-Phase Hydrogenation of Acetonitrile |
| title_full | The Effect of Thermal Treatment under Different Atmospheric Conditions on the Catalytic Performance of Nickel Supported on Porous Silica in the Gas-Phase Hydrogenation of Acetonitrile |
| title_fullStr | The Effect of Thermal Treatment under Different Atmospheric Conditions on the Catalytic Performance of Nickel Supported on Porous Silica in the Gas-Phase Hydrogenation of Acetonitrile |
| title_full_unstemmed | The Effect of Thermal Treatment under Different Atmospheric Conditions on the Catalytic Performance of Nickel Supported on Porous Silica in the Gas-Phase Hydrogenation of Acetonitrile |
| title_short | The Effect of Thermal Treatment under Different Atmospheric Conditions on the Catalytic Performance of Nickel Supported on Porous Silica in the Gas-Phase Hydrogenation of Acetonitrile |
| title_sort | effect of thermal treatment under different atmospheric conditions on the catalytic performance of nickel supported on porous silica in the gas phase hydrogenation of acetonitrile |
| url | https://doi.org/10.1260/026361707782398218 |
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