聚苯胺负载对甲苯磺酸催化合成肉桂酸丙酯的工艺研究

doi:10.13218/j.cnki.csdc.2018.12.007

Abstract

Abstract: Propyl cinnamate was prepared using cinnamic acid and propanol as raw materials andp-toluenesulphonic acid supported on polyaniline (PTSA/PANI) as catalyst.The effects of molar ratio of acid/alcohol,reaction time,and the number of times used and the dosage of catalyst on the yield of propyl cinnamate were investigated.The product was characterized by IR and¹H NMR.The results show that PTSA/PANI has good catalytic activity and stability.The optimized conditions are as follows:0.15 mol (approximately 22.2 g) cinnamic acid;n(cinnamic acid)∶n(propanol)=1∶4.0;the catalyst used is in an amount corresponding to 6% of the mass of cinnamic acid;the amount of cyclohexane (water entrainer) is 15 mL;the reaction time is 3.5 h.The yield of propyl cinnamate thus obtained exceeds 90.0%.The catalyst is able to be reused 6 times and the yield is still above 85.0%.

Key words: propyl cinnamate, p-toluenesulfonic acid, polyaniline, synthesis

CLC Number:

TQ655

DING Bang-dong, YANG Rui-hong, DU Bin, LUO Zhi-chen, LIU Wei. Study on catalytic synthesis of propyl cinnamate with p-toluenesulphonic acid supported onpolyaniline[J].China Surfactant Detergent & Cosmetics, 2018, 48(12): 702-705.

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Study on catalytic synthesis of propyl cinnamate with p-toluenesulphonic acid supported onpolyaniline

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