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Abstract
The transesterification of diethyl oxalate (DEO) with phenol to form diphenyl oxalate (DPO) has been carried out in the liquid phase over very efficient MoO3/TiO2 solid‐acid sol–gel catalysts. A selectivity of 100 % with a remarkable maximum yield of 88 % were obtained, which opens the route to downstream phosgene‐free processes for the synthesis of polycarbonates. Interpretation of the results of various acidity measurements (NH3 and pyridine desorption, methanol oxidation as a probe reaction) allowed us to identify the catalytic sites as Lewis acid sites.
Catalyze this: The transesterification of diethyl oxalate with phenol to form diphenyl oxalate was carried out in the liquid phase over very efficient MoO3/TiO2 solid‐acid sol–gel catalysts, with a remarkable selectivity of 100 % at a conversion of 88 %.
<!--Unmatched element: w:blockFixed-->| Authors: | Trupti Kotbagi, Duy Luan Nguyen, Christine Lancelot, Carole Lamonier, Kaew‐Arpha Thavornprasert, Zhu Wenli, Mickaël Capron, Louise Jalowiecki‐Duhamel, Shubhangi Umbarkar, Mohan Dongare, Franck Dumeignil | |
| Journal: | ChemSusChem | |
| Year: | 2012 | |
| Pages: | n/a | |
| DOI: | 10.1002/cssc.201100802 | |
| Publication date: | 23-07-2012 |
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