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Title
  • en A multiphase reaction medium including pressurized carbon dioxide and water for selective hydrogenation of benzonitrile with a Pd/Al2O3 catalyst
Creator
    • en Wang, Yu
    • en Narisawa, Satomi
    • en Fujita, Shin-ichiro
    • en Liu, Ruixia
Accessrights open access
Subject
  • Other en Benzonitrile
  • Other en Selective hydrogenation
  • Other en Carbon dioxide
  • Other en Water
  • Other en Multiphase reaction
  • NDC 430
Description
  • Abstract en 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.
Publisher en Elsevier
Date
    Issued2013-03
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/52935
Relation
  • isVersionOf DOI https://doi.org/10.1016/j.apcata.2013.03.004
Journal
    • PISSN 0926-860X
      • en Applied Catalysis A: General
      • Volume Number456 Page Start215 Page End222
File
Oaidate 2023-07-26