| 摘要 |
PROBLEM TO BE SOLVED: To provide a recycle method of a titanium-containing silicon oxide catalyst used to obtain an epoxide by reacting an organic hydroperoxide and an olefin and not silylated. SOLUTION: The method comprises the step of calcining in the presence of a gas containing oxygen the titanium-containing silicon oxide catalyst not silylated, which is used to obtain the epoxide by reacting the organic hydroperoxide and olefin, to obtain a reproduced catalyst. Air is preferable as the gas containing oxygen. The calcining is generally carried out at the temperatures of 300-900°C, preferably 400-800°C, more preferably 500-700°C, and generally in the range of 0.1-10 hours. COPYRIGHT: (C)2008,JPO&INPIT
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