Abstract β-methylnaphthoquinone (β-MNQ) was synthesized by heterogeneous catalytic oxidation of β-methylnaphthalene (β-MN) with WO3/HMS as catalyst and hydrogen peroxide as oxidant in acetic acid (HAc). The catalyst of molecular sieve WO3/HMS was prepared with (NH4)2WO4 as tungsten source. The effect of process conditions such as reaction temperature, reaction time, loading content of WO3, catalyst usage and mass fraction of oxidant on the reaction were investigated. The experimental results showed that the optimum conditions of β-MNQ synthesized with β��MN over WO3/HMS catalyst were as follows: the reaction temperature was 353��K, the reaction time was 6��h, n(H2O2)/n(β-MN)=18:1, the amount of catalyst with n(Si)/n(W)=30 was 0.3 g/mL(based on HAc). Under these conditions, the selectivity and the yield of β-MNQ were up to 51.7% and 46.9%, respectively.
LI Dong-Jun, YUE Li, LAI Shi-Quan, LI Wen-Jun, ZHANG Jia-Da, WANG Rong-Rong.Synthesis of β-methylnaphthoquinone by Catalytic Oxidation of β-methylnaphthalene with WO3/HMS Catalyst[J] Chemcial Industry and Engineering, 2011,V28(2): 63-67
Copyright 2010 by Chemcial Industry and Engineering
2011, Vol. 28 
