| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for preparing propanediol, particularly 1,3-propanediol at a higher yield by a hydrogenation decomposition method using glycerin as a starting material which is expected to be in excess supply. <P>SOLUTION: The method for preparing 1,3-propanediol or a mixture of 1,2-propanediol and 1,3-propanediol by hydrogenating glycerin in the presence of a solid catalyst is characterized by using a solid catalyst comprising at least one species of a first metal element selected from the group consisting of platinum, ruthenium, palladium, rhodium, rhenium, iridium, nickel and cobalt, and at least one species of a second metal element selected from the group consisting of tungsten, molybdenum, chromium, manganese, iron, vanadium, hafnium, tantalum and niobium. Propanediol, particularly 1,3-propanediol can be prepared at a high yield according to the present invention. <P>COPYRIGHT: (C)2008,JPO&INPIT |
