| 摘要 |
PURPOSE:In esterifying an acid with an alcohol, to obtain an ester in high yield with suppressing the occurrence of an ether, etc. as by-products free from the elution of a catalyst component to a reaction system, by using a catalyst with a carrier as a catalyst obtained by supporting a heteropolyacid on active carbon. CONSTITUTION:Using a catalyst with a carrier obtained by supporting a heteropolyacid such as 12-molybdophosphoric acid, 12-tungstosilicic acid, 12-tungstoboric acid, etc. or its salt such as a metal salt of theIgroup, II group, III group, IV group, etc. of periodic table on active carbon, an acid is reacted with an alcohol to give an ester. The supported amount of the heteropolyacid is 5- 20wt% preferably 10-15wt%. The catalyst is obtained by adding a given amount of active carbon to a solution of the heteropolyacid, stirring them sufficiently for a fixed time to adsorb the heteropolyacid on the active carbon, fitering and removing the active carbon, washing it until no heteropolyacid is observed, and, if necessary, drying it. |
