| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gold-deposited particle which is excellent in abrasion resistance and keeps high reactivity stably in a method for producing carboxylate by reacting aldehyde with alcohol or alcohols in the presence of oxygen. <P>SOLUTION: The gold-deposited particle contains silica, Al and an alkali metal and/or an alkaline-earth metal in a carrier wherein the atomic ratio of the alkali metal and/or the alkaline-earth metal to Al and that of Al to Si satisfy the expressions: ((the alkali metal)+0.5x(alkaline-earth metal))/Al≥0.5 and Al/Si=0.02-0.25, respectively. The gold-deposited particle is obtained by depositing gold on such a carrier. <P>COPYRIGHT: (C)2008,JPO&INPIT |
