| 摘要 |
PURPOSE:To enhance activation, by forming the catalyst from at least one catalytic assistant selected from palladium, copper, silver and rare earth metal salts, and an activating assistant such as ammonium persulfate. CONSTITUTION:A catalyst composition is blended with a basic composition of (Pd<2+>+2.0-3.0 X+0.01-0.5 Y) [wherein X is pref. approx. 2 in case of gamma-Al2O3 (having a micropore volume of 0.1-0.5cc/g and a specific surface area of 20- 400m<2>/g, and Y is pref. ammonium persulfate in a range pref. of 0.01-0.5molar or ratio for Pd<2+>=1] based on the amount of Pd<2+>, and treated by a method for accelerating uniform blending or maturing it for 7-10 days. This liquid catalytic composition is used to impregnate into a carrier such as porous ceramics, an amorphous compound, active carbon, alumina or silica. |
