期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 105, 期 -, 页码 121-131出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2021.09.015
关键词
Neryl acetate; Esterification reaction; Heterogeneous catalysis; Ion exchange resin; Kinetic model; Reaction mechanism
资金
- Government of Santa Catarina State
- Community University of Chapeco Region (Unochapeco)
- Federal University of Santa Catarina (UFSC)
In this study, neryl acetate was successfully synthesized through heterogeneous catalysis, with optimal conditions of 40 degrees C temperature, 7% catalyst content, 1:4 molar ratio, 250 rpm agitation speed, and 3 mmol nerol content. The catalyst showed high conversion and selectivity even after 3 cycles of reuse, indicating low loss of catalytic activity.
This work aims to synthesize neryl acetate from the nerol esterification reaction with acetic anhydride through heterogeneous catalysis using the ion exchange resin Lewatit (R) GF 101. The reaction was monitored by gas chromatography and the neryl acetate chemical structure was confirmed by mass spectrometry and nuclear magnetic resonance spectroscopy. The variables effect on the neryl acetate synthesis was evaluated from an experimental design analysis. The reaction showed the highest combined values for nerol conversion (98.11%) and neryl acetate selectivity (86.10%) at 30 min within optimal experimental conditions of temperature at 40 degrees C, catalyst content at 7% wt, molar ratio at 1:4 (nerol: acetic anhydride), agitation speed at 250 rpm and nerol content at 3 mmol. The complete nerol conversion was achieved at 40 min with 82.34% selectivity. The reaction rate was controlled only by the nerol decay, an expected behavior due to the excess of acetic anhydride used. In addition, the value obtained for the main reaction kinetic constant found by a pseudo-homogeneous model was 6 times greater than that of the parallel reaction. The catalyst reuse was investigated and after 3 cycles a high conversion (96.68%) and selectivity (83.78%) were observed indicating a low loss of the catalytic activity. (C) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据