Macrolactonization of methyl 15-hydroxypentadecanoate to cyclopentadecanolide over Mo–Fe/HZSM-5 catalyst
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The Mo–Fe/HZSM-5 catalyst was prepared by the impregnation method using citric acid to form Fe3+ and Mo6+ chelates in the impregnation solution. The structure, acidity and the catalytic performance for the macrolactonization of methyl 15-hydroxypentadecanoate to cyclopentadecanolide over Mo–Fe/HZSM-5 catalyst in comparison with unmodified HZSM-5, Fe/HZSM-5 and Mo/HZSM-5 catalysts were studied. The results indicate that the optimum ratio of Mo/Fe is 2.5. The Fe2(MoO4)3 and Al2(MoO4)3 species are formed on the Mo–Fe/HZSM-5 catalyst, with an increase of strength and slight diminution of the amount of acid sites. The Mo–Fe/HZSM-5 catalyst exhibited high activity for the selective macrolactonization of methyl 15-hydroxypentadecanoate to cyclopentadecanolide.
KeywordsMo–Fe/HZSM-5 Macrolactonization Methyl 15-hydroxypentadecanoate Cyclopentadecanolide
We are grateful for the support of the Natural Science Foundation of Guangxi Zhuang Autonomous Region of China (No GKZ 0135013). Lastly, we are full of gratitude to Dr. Min Ling for checking our manuscript.
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