摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for easily producing a titanosilicate having a long catalyst life, and to provide a method for producing an oxime with good selectivity while maintaining catalyst life over a prolonged period of time by bringing a ketone into an ammoximation reaction at a high conversion rate. <P>SOLUTION: The method for producing the titanosilicate having MWW structure includes: a step (1) of mixing a silicon compound, a boron compound, water and a structure directing agent; a step (2) of preparing a suspension by heat-treating a mixture obtained at the step (1); a step (3) of mixing the suspension prepared at the step (2) and a titanium compound; a step (4) heat-treating a mixture obtained at the step (3) and separating formed crystals; and a step (5) of firing the crystals obtained at the step (4). The method for producing an oxime includes bringing a ketone into an ammoximation reaction with a peroxide and ammonia in the presence of the titanosilicate having MWW structure. <P>COPYRIGHT: (C)2009,JPO&INPIT |