Synthesis of vitamin K3 over mesoporous Zr-MCM-41 molecular sieves

M. Selvaraj, J. Kim, T. G. Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Vitamin K3 (VK3) or 2-methyl-1,4-napthoquinone or menadione has been synthesized by selective oxidation of 2-methyl naphthalene (2-MN) with H2O2 using Zr-MCM-41(HT, hydrothermal) and Zr-MCM-41(TIE, template ion-exchange) catalysts. Different parameters affecting the oxidation of 2-MN like different Si/Zr ratios of catalysts, amount of the catalyst, reaction temperature, reaction time, 2-MN to H2O 2 molar ratio, concentration of acetonitrile and catalyst regenerability are described. In the catalytic reaction, the yield and selectivity of vitamin K3 in Zr-MCM-41(27)-TIE are higher than that of Zr-MCM-41(27)-HT due to increasing the catalytic activity within pores on the silica surface by completely template-ion exchanging through Zr-ions under TIE method. Thus a Zr-MCM-41(27)-TIE catalyst is the superior catalyst for the synthesis of VK3.

Original languageEnglish
Pages (from-to)867-872
Number of pages6
JournalStudies in Surface Science and Catalysis
Volume156
DOIs
Publication statusPublished - 2005

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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