A Novel Strategy for the Preparation of Supported Pd as an Efficient Catalyst for the Hydrogenation of Nitrobenzene in Mild Conditions
An advanced strategy was developed for the synthesis of molecular sieve-supported Pd catalysts. In this method, reductant containing C=C was in-situ prepared and pre-dispersed in the pore of the zeolites. The C=C group in the reductant can reduce the Pd<sup>2+</sup> to Pd<sup>0<...
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MDPI AG
2023-11-01
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| author | Zhi Hu Yiyi Cheng Meng Wu Ying Duan Yanliang Yang Tianliang Lu |
| author_facet | Zhi Hu Yiyi Cheng Meng Wu Ying Duan Yanliang Yang Tianliang Lu |
| author_sort | Zhi Hu |
| collection | DOAJ |
| description | An advanced strategy was developed for the synthesis of molecular sieve-supported Pd catalysts. In this method, reductant containing C=C was in-situ prepared and pre-dispersed in the pore of the zeolites. The C=C group in the reductant can reduce the Pd<sup>2+</sup> to Pd<sup>0</sup> efficiently, leading to the formation of small and uniform Pd nanoparticles (~2 nm). The physical and chemical properties of the catalyst were characterized by XRD, TEM, XPS (ICP-OES), N<sub>2</sub> isothermal adsorption-desorption, and H<sub>2</sub>-TPR. These catalysts showed high catalytic performance for the hydrogenation of nitrobenzene to aniline. All the TOFs for 1.5 Pd/Y, 1.5 Pd/ZSM-5, and 1.5 Pd/MOR with 1.5 wt% Pd loading are higher than 1000 h<sup>−1</sup> at 30 °C and 0.1 MPa H<sub>2</sub>. Meanwhile, kinetic analysis for 2.0 Pd/Y was carried out, and an apparent activation energy of 28.88 kJ mol<sup>−1</sup> was obtained, which is lower than most of the reported values in the literature. Furthermore, these catalysts were stable and recyclable. |
| first_indexed | 2024-03-09T16:56:19Z |
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| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T16:56:19Z |
| publishDate | 2023-11-01 |
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| spelling | doaj.art-0c7643a80a994b8da66459698d32f96e2023-11-24T14:35:04ZengMDPI AGCatalysts2073-43442023-11-011311143810.3390/catal13111438A Novel Strategy for the Preparation of Supported Pd as an Efficient Catalyst for the Hydrogenation of Nitrobenzene in Mild ConditionsZhi Hu0Yiyi Cheng1Meng Wu2Ying Duan3Yanliang Yang4Tianliang Lu5School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, ChinaCollege of Food and Drug, Luoyang Normal University, Luoyang 471934, ChinaCollege of Food and Drug, Luoyang Normal University, Luoyang 471934, ChinaSchool of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, ChinaAn advanced strategy was developed for the synthesis of molecular sieve-supported Pd catalysts. In this method, reductant containing C=C was in-situ prepared and pre-dispersed in the pore of the zeolites. The C=C group in the reductant can reduce the Pd<sup>2+</sup> to Pd<sup>0</sup> efficiently, leading to the formation of small and uniform Pd nanoparticles (~2 nm). The physical and chemical properties of the catalyst were characterized by XRD, TEM, XPS (ICP-OES), N<sub>2</sub> isothermal adsorption-desorption, and H<sub>2</sub>-TPR. These catalysts showed high catalytic performance for the hydrogenation of nitrobenzene to aniline. All the TOFs for 1.5 Pd/Y, 1.5 Pd/ZSM-5, and 1.5 Pd/MOR with 1.5 wt% Pd loading are higher than 1000 h<sup>−1</sup> at 30 °C and 0.1 MPa H<sub>2</sub>. Meanwhile, kinetic analysis for 2.0 Pd/Y was carried out, and an apparent activation energy of 28.88 kJ mol<sup>−1</sup> was obtained, which is lower than most of the reported values in the literature. Furthermore, these catalysts were stable and recyclable.https://www.mdpi.com/2073-4344/13/11/1438Pdin-situ reductionhydrogenationmolecular sieve |
| spellingShingle | Zhi Hu Yiyi Cheng Meng Wu Ying Duan Yanliang Yang Tianliang Lu A Novel Strategy for the Preparation of Supported Pd as an Efficient Catalyst for the Hydrogenation of Nitrobenzene in Mild Conditions Catalysts Pd in-situ reduction hydrogenation molecular sieve |
| title | A Novel Strategy for the Preparation of Supported Pd as an Efficient Catalyst for the Hydrogenation of Nitrobenzene in Mild Conditions |
| title_full | A Novel Strategy for the Preparation of Supported Pd as an Efficient Catalyst for the Hydrogenation of Nitrobenzene in Mild Conditions |
| title_fullStr | A Novel Strategy for the Preparation of Supported Pd as an Efficient Catalyst for the Hydrogenation of Nitrobenzene in Mild Conditions |
| title_full_unstemmed | A Novel Strategy for the Preparation of Supported Pd as an Efficient Catalyst for the Hydrogenation of Nitrobenzene in Mild Conditions |
| title_short | A Novel Strategy for the Preparation of Supported Pd as an Efficient Catalyst for the Hydrogenation of Nitrobenzene in Mild Conditions |
| title_sort | novel strategy for the preparation of supported pd as an efficient catalyst for the hydrogenation of nitrobenzene in mild conditions |
| topic | Pd in-situ reduction hydrogenation molecular sieve |
| url | https://www.mdpi.com/2073-4344/13/11/1438 |
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