Author/Authors :
Shi، نويسنده , , Feng and Deng، نويسنده , , Youquan and SiMa، نويسنده , , Tianlong and Yang، نويسنده , , Hongzhou، نويسنده ,
Abstract :
The syntheses of disubstituted ureas by carbonylation of a series of amines in the presence of a sulfate modified zirconia supported palladium catalyst was investigated at an initial total pressure of 4.0 MPa and 135°C. High conversions and yields were achieved for the synthesis of symmetric dialkylureas. This supported catalyst could also be easily separated and recovered after reaction.
