Catalysis Letters

, Volume 41, Issue 3–4, pp 177–179 | Cite as

Catalysis at the toluene/water interface: shape-selective hydrolysis of esters having some rings and lactones promoted by octadecyl immobilized H-ZSM-5 catalyst

  • Haruo Ogawa
  • Tamiki Fujigaki
  • Junichi Takahashi
  • Teiji Chihara
Article

Abstract

Shape-selective properties of octadecyltrichlorosilane-treated H-ZSM-5, abbreviated as H-ZSM-5-C18, have been observed in the hydrolysis of esters having some rings and lactones in toluene-water solvent system. The shape-selectivity for the reaction has been evaluated by the ratio\({{k'_{HCl} } \mathord{\left/ {\vphantom {{k'_{HCl} } {k'_{H - ZSM - 5 - C_{18} } }}} \right. \kern-\nulldelimiterspace} {k'_{H - ZSM - 5 - C_{18} } }}\) of the relative rate constants in comparison with the rate constant of methyl acetate. The selectivity became higher with increase in bulkiness of the substrate. Substrates having the minimum diameter larger than 6.5 Å, significantly larger in size than the pore openings of ZSM-5, could not react in this system.

Keywords

H-ZSM-5-C18 shape-selectivity hydrolysis of esters 

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Copyright information

© J.C. Baltzer AG, Science Publishers 1996

Authors and Affiliations

  • Haruo Ogawa
    • 1
  • Tamiki Fujigaki
  • Junichi Takahashi
  • Teiji Chihara
    • 2
  1. 1.Department of ChemistryTokyo Gakugei UniversityTokyoJapan
  2. 2.The Institute of Physical and Chemical Research (RIKEN)SaitamaJapan

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