Premium
Transesterification of Diethyl Oxalate with Phenol over Sol–Gel MoO 3 /TiO 2 Catalysts
Author(s) -
Kotbagi Trupti,
Nguyen Duy Luan,
Lancelot Christine,
Lamonier Carole,
Thavornprasert KaewArpha,
Wenli Zhu,
Capron Mickaël,
JalowieckiDuhamel Louise,
Umbarkar Shubhangi,
Dongare Mohan,
Dumeignil Franck
Publication year - 2012
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201100802
Subject(s) - catalysis , phenol , transesterification , chemistry , diphenyl carbonate , methanol , oxalate , selectivity , pyridine , lewis acids and bases , inorganic chemistry , yield (engineering) , desorption , nuclear chemistry , organic chemistry , materials science , adsorption , metallurgy
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 3 /TiO 2 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 3 and pyridine desorption, methanol oxidation as a probe reaction) allowed us to identify the catalytic sites as Lewis acid sites.