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

M. Selvaraj, J. Kim, Tai Gyu Lee

Research output: Contribution to journalArticle

4 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
Publication statusPublished - 2005 Jan 1

Fingerprint

Vitamin K 3
vitamins
Vitamins
Molecular sieves
Multicarrier modulation
absorbents
Ion exchange
templates
catalysts
Catalysts
synthesis
Naphthalene
naphthalene
ions
ion exchanging
Oxidation
oxidation
Acetonitrile
reaction time
Silicon Dioxide

All Science Journal Classification (ASJC) codes

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

Cite this

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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.",
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Synthesis of vitamin K3 over mesoporous Zr-MCM-41 molecular sieves. / Selvaraj, M.; Kim, J.; Lee, Tai Gyu.

In: Studies in Surface Science and Catalysis, Vol. 156, 01.01.2005, p. 867-872.

Research output: Contribution to journalArticle

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AU - Selvaraj, M.

AU - Kim, J.

AU - Lee, Tai Gyu

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N2 - 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.

AB - 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.

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