کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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41522 | 45892 | 2010 | 6 صفحه PDF | دانلود رایگان |
Transesterification of ethyl butyrate with methanol on the organic cation-exchanged mordenite ([bmim]M20) was studied in order to examine the reactivity of the methoxide ions that were generated on [bmim]M20 by the dissociation of methanol. Since transesterification occurred by addition of NaCl, the methoxide ions on [bmim]M20 were demonstrated to be utilizable in the reaction. The activity improved with a concentration of NaCl below 3 mmol L−1, whereas it was constant at concentrations above 3 mmol L−1. The adsorption of ethyl butyrate on the partially ion-exchanged [bmim]M20 samples was observed by FT-IR spectroscopy. It was found that it was difficult for ethyl butyrate to enter the micropores of [bmim]M20. From these results, a reaction mechanism was proposed in which the methoxide ions generated in the micropores of [bmim]M20 reacted with ethyl butyrate after they diffused outside of the micropores.
Figure optionsDownload high-quality image (54 K)Download as PowerPoint slideResearch highlights▶ Transesterification occurred on the organic cation-exchanged mordenite ([bmim]M20). ▶ Transesterification improved by addition of NaCl. ▶ A reaction mechanism was proposed for the transesterification on [bmim]M20.
Journal: Applied Catalysis A: General - Volume 390, Issues 1–2, 20 December 2010, Pages 45–50