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A multiphase reaction medium including pressurized carbon dioxide and water for selective hydrogenation of benzonitrile with a Pd/Al2O3 catalyst
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作成者 |
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アクセス権 |
open access |
主題 |
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Benzonitrile
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Selective hydrogenation
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Carbon dioxide
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Water
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Multiphase reaction
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NDC
430
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内容注記 |
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Abstract
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The hydrogenation of benzonitrile was studied with a Pd/Al2O3 catalyst in the presence of pressurized CO2 and water. This multiphase reaction system was effective for the selective production of the desired primary amine of benzylamine with no deactivation of the catalyst. The enhanced selectivity to the primary amine resulted from its transfer into water phase, which prevented the primary amine from reacting with an intermediate of imine into the secondary amine in the organic phase (benzonitrile). In addition, interactions of CO2 molecules with the primary amine could also increase its selectivity. In the absence of water, the catalyst was deactivated by the accumulation of a carbamate salt on the surface of catalyst. But this deactivation was avoided by the addition of water because the salt was soluble in water and it did not deposit on the catalyst existing at interfacial layer between the water and organic phases.
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出版者 |
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Elsevier
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日付 |
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言語 |
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資源タイプ |
journal article |
出版タイプ |
AM |
資源識別子 |
HDL
http://hdl.handle.net/2115/52935
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関連 |
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DOI
https://doi.org/10.1016/j.apcata.2013.03.004
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収録誌情報 |
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Applied Catalysis A: General
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巻456
開始ページ215
終了ページ222
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ファイル |
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コンテンツ更新日時 |
2023-07-26 |