METHODS FOR ENHANCING THE EFFICIENCY OF RHENIUM-PROMOTED EPOXIDATION CATALYSTS AND EPOXIDATION METHODS UTILIZING THESE

摘要

A method for enhancing the efficiency of a rhenium-promoted epoxidationcatalyst is provided. Advantageously,the method may be carried out in situ, i.e., within the epoxidation process,and in fact, may be carried out during production of thedesired epoxide. As such, a method for the epoxidation of alkylenesincorporating the efficiency-enhancing method is also provided,as is a method for using the alkylene oxides so produced for the production of1,2-diols, 1,2-carbonates, 1,2-diol ethers, oralkanolamines.