发明授权
US06548445B1 Supported catalysts containing a platinum metal and process for preparing diaryl carbonates 失效
含铂金属的载体催化剂和制备碳酸二芳基酯的方法

Supported catalysts containing a platinum metal and process for preparing diaryl carbonates
摘要:
In the process for preparing an aromatic carbonate from an aromatic hydroxy compound, CO and O2 in the presence of a quaternary salt and a base using a platinum metal catalyst and a cocatalyst, use is advantageously made of supported catalysts containing, in the reaction-ready state, (i) a platinum metal, a platinum metal halide or a platinum metal halide complex and (ii) a metal compound acting as cocatalyst from groups IB, IIB, IIIA, IIIB, IVA, IVB, VB, VIB, VIIB, the iron group (atomic numbers 26-28) or the rare earth metals (atomic numbers 58-71) of the Periodic Table of the Elements (Mendeleev), each in an amount of 0.01-15% by weight, calculated as metal and based on the total weight of the catalyst.
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