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, templates 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 H2O2 molar ratio, concentration of acetonitrile and catalyst regenerability are described. In the catalytic reacton, 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 complete 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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
