Abstract: A new hydrogenation catalyst EK-Ⅲ for producing hydrogen peroxide (H₂O₂) through anthraquinone route was developed by using self-made spherical alumina support and proprietary technology. The catalyst has the characteristics of large specific surface area(more than 170 m²/g), low bulk density (0.42 g/mL), and widely and enriched palladium distribution with the thickness of palladium of only 60—70 μm. The industrial application of the catalyst EK-Ⅲ in Jilin Shuang’ou Chemical Industry Co., Ltd. shows that compared with a domestic industrial product catalyst R, the capacity of hydrogen peroxide per ton of catalyst is still more than 20% higher when the loading amount of EK-Ⅲ catalyst is less than 30%,showing that the EK-Ⅲ catalyst is featured ashigher activity, the better selectivity, and longer stable operation cycle.

Key words: catalyst, macroporous support, anthraquinone hydrogenation, peroxide