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Synthesis and characterization of NaY zeolite-encapsulated Mn-hydrazone Schiff base: An efficient and reusable catalyst for oxidation of olefins

Bagherzadeh, M ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1080/00958972.2012.731595
  3. Publisher: 2012
  4. Abstract:
  5. The Mn-hydrazone Schiff base has been prepared, characterized, and encapsulated into NaY to prepare a new heterogeneous catalyst. Elemental analysis, UV-Vis, infrared spectroscopic analysis, diffuse reflectance spectroscopy, thermal analysis, small angle X-ray diffraction, and N2 sorption indicate the presence of Mn-hydrazone Schiff base within the nanocavity pores of zeolite-Y. The catalysts showed excellent catalytic efficiency in epoxidation with various olefinic compounds including cyclooctene, using tert-BuOOH as oxidant. Cyclooctene showed high conversion (97%) as well as epoxide selectivity (89%) with tert-BuOOH. Moreover, the encapsulated complex showed good recoverability without significant loss of activity and selectivity within successive runs
  6. Keywords:
  7. Hydrazone Schiff base ; Zeolite ; Epoxidation ; tert-Butyl hydroperoxide
  8. Source: Journal of Coordination Chemistry ; Volume 65, Issue 22 , Aug , 2012 , Pages 4054-4066 ; 00958972 (ISSN)
  9. URL: http://www.tandfonline.com/doi/abs/10.1080/00958972.2012.731595