Please use this identifier to cite or link to this item: https://doi.org/10.1039/c2dt31096a
Title: Selective synthesis of vitamin K3 over mesoporous NbSBA-15 catalysts synthesized by an efficient hydrothermal method
Authors: Selvaraj, M.
Park, D.-W.
Kim, I.
Kawi, S. 
Ha, C.S.
Issue Date: 28-Aug-2012
Source: Selvaraj, M., Park, D.-W., Kim, I., Kawi, S., Ha, C.S. (2012-08-28). Selective synthesis of vitamin K3 over mesoporous NbSBA-15 catalysts synthesized by an efficient hydrothermal method. Dalton Transactions 41 (32) : 9633-9638. ScholarBank@NUS Repository. https://doi.org/10.1039/c2dt31096a
Abstract: Well hexagonally ordered NbSBA-15 catalysts synthesized by an efficient hydrothermal method were used, for the first time, for the selective synthesis of vitamin K3 by liquid-phase oxidation of 2-methyl-1-naphthol (2MN1-OH) under various reaction conditions. The recyclable NbSBA-15 catalysts were also reused to find their catalytic activities. To investigate the leaching of non-framework niobium species on the surface of silica networks, the results of original and recyclable NbSBA-15 catalysts were correlated and compared. To find an optimum condition for the selective synthesis of vitamin K3, the washed NbSBA-15(2.2pH) was extensively used in this reaction with various reaction parameters such as temperature, time and ratios of reactant (2M1N-OH to H2O2), and the obtained results were also demonstrated. Additionally, the liquid-phase oxidation of 2M1N-OH was carried out with different solvents to find the best solvent with a good catalytic activity. Based on the all catalytic studies, the vitamin K3 selectivity (97.3%) is higher in NbSBA-15(2.2pH) than that of other NbSBA-15 catalysts, and the NbSBA-15(2.2pH) is found to be a highly active and eco-friendly heterogeneous catalyst for the selective synthesis of vitamin K3. © 2012 The Royal Society of Chemistry.
Source Title: Dalton Transactions
URI: http://scholarbank.nus.edu.sg/handle/10635/90101
ISSN: 14779226
DOI: 10.1039/c2dt31096a
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

8
checked on Feb 22, 2018

WEB OF SCIENCETM
Citations

8
checked on Jan 22, 2018

Page view(s)

34
checked on Feb 19, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.