Production method of the meso porous silica and the mixture and that mixture which of the super particulate of the precious metal contain cerium, and oxidize removal method of the minute carbon monoxide which uses that mixture for the catalyst and synthetic methodological null diameter of the ketones due to the oxidize dehydrogenation

摘要

PROBLEM TO BE SOLVED: To provide a high-performance catalyst capable of efficiently eliminating a minute amount of carbon monoxide in air or in a hydrogen gas, or a high-performance catalyst capable of efficiently synthesizing a ketone by oxidative dehydrogenation of an alcohol, and a production method thereof.;SOLUTION: An inorganic composite prepared by causing a cerium-containing mesoporous silica to carry superfine gold particles, especially superfine particles of which the diameters of almost all particles are 0.5-5 nm, is used as the catalyst. A method for causing a gold complex to be adsorbed by dispersing cerium-containing mesoporous silica in a solution of chlorauric acid adjusted to a pH value higher than 7.0 and lower than 10.0 or by contacting the solution with the cerium-containing mesoporous silica, is employed as the supporting method of gold in the composite.;COPYRIGHT: (C)2009,JPO&INPIT