Catalysis Letters

, Volume 33, Issue 3–4, pp 387–394 | Cite as

Sn-ZSM-12, a new, large pore MTW type tin-silicate molecular sieve: synthesis, characterization and catalytic properties in oxidation reactions

  • N. K. Mal
  • A. Bhaumik
  • R. Kumar
  • A. V. Ramaswamy


A new large pore tin-silicate analogue of zeolite ZSM-12 (MTW topology) with Si/Sn molar ratio >70 has been synthesized hydrothermally using a new template, hexamethylene bis(benzyl dimethyl ammonium hydroxide). This material exhibits an expansion in unit cell volume (XRD), an IR band at 970 cm−1 and a charge transfer band at 205 nm in the UV-Vis region indicating the presence of Si-O-Sn units with Sn4+ centers in Td configuration. Sn-ZSM-12 catalyzes the oxidation of phenol,m-cresol andm-xylene using dilute H2O2 as an oxidizing agent.


tin-silicate zeolite Sn-ZSM-12 high silica molecular sieve Sn-molecular sieve oxidation catalysts with Sn selective oxidation reactions 


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Copyright information

© J.C. Baltzer AG, Science Publishers 1995

Authors and Affiliations

  • N. K. Mal
    • 1
  • A. Bhaumik
    • 1
  • R. Kumar
    • 1
  • A. V. Ramaswamy
    • 1
  1. 1.National Chemical LaboratoryPuneIndia

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