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Transesterification of Diethyl Oxalate with Phenol over Sol-Gel MoO3/TiO2 Catalysts.
- Source :
- ChemSusChem; Aug2012, Vol. 5 Issue 8, p1467-1473, 7p
- Publication Year :
- 2012
-
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 MoO<subscript>3</subscript>/TiO<subscript>2</subscript> 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 (NH<subscript>3</subscript> and pyridine desorption, methanol oxidation as a probe reaction) allowed us to identify the catalytic sites as Lewis acid sites. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 18645631
- Volume :
- 5
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- ChemSusChem
- Publication Type :
- Academic Journal
- Accession number :
- 78321449
- Full Text :
- https://doi.org/10.1002/cssc.201100802