| 摘要 |
PROBLEM TO BE SOLVED: To continuously obtain a lactone using epoxide for a long time in high selectivity and a high yield.SOLUTION: There is provided a catalyst for lactonizing epoxide used when epoxide is lactonized by carbon monoxide. The catalyst is a metal oxide-supported metal catalyst, and a metal oxide of the metal oxide-supported metal catalyst is desirably at least one oxide chosen from a group consisting of group 4 to group 10 transition metals, and a metal in the metal oxide supported metal catalyst is at least one chosen from a group consisting of transition metals of group 11. |
