A bimetallic molybdenum(VI) and stannum(IV) catalyst for the transesterification of dimethyl oxalate with phenol

作者：Gong JL; Ma XB^*; Yang X; Wang SP; Wen SD

来源：Catalysis Communications, 2004, 5(4): 179-184.

DOI：10.1016/j.catcom.2004.01.006

• diphenyl carbonate
• diphenyl oxalate
• methyl phenyl oxalate
• trail sesterification
• diinethyl oxalate
• bimetallic MoO3-SnO2/SiO2 catalysts

The transesterification of dimethyl oxalate (DMO) with phenol to methyl phenyl oxalate (MPO) and diphenyl oxalate (DPO) was carried out in liquid phase under facile catalytic conditions. A series of bimetallic, MoO3-SnO2/SiO2, catalysts with various Mo and Sri content were prepared by sequential impregnation of cationic Mo species and cationic Sn complexes using impregnation method. The effects of mass ratio of Mo:Sn, amount of Sri additive, and Mo(Sn) laoding amount on activities of transesterification of dimethyl oxalate with phenol were investigated. The evaluation results showed that MoO3-SnO2/SiO2 catalyst with 14 wt% Mo(Sn) content performed best, giving 74.6% DMO conversion and 99.5% selectivity to MPO and DPO. This new heterogeneous catalyst provided not only an excellent selectivity (99% to MPO and DPO) and high yield of MPO and DPO but also a simple and practical protocol for DPC synthesis.

• 出版日期2004-4
• 单位天津大学