Aluminum oxide with a variety of pore structure and catalyst and process for the selective hydrogenation of pyrolysis gasoline

摘要

The present invention discloses an alumina support having a diverse pore structure having a specific surface area of 40 to 160 m SUP 2 / SUP / g and a total pore volume of 0.3 to 1.2 cm SUP 3 / SUP / g; its volume of pores having a pore diameter smaller than 30 nm comprises 5 to 60% of the total pore volume, the volume of pores having a pore radius of 30 to 60 nm comprising 20 to 75% of the total pore volume, and its volume of pores having a pore diameter greater than 60 20 to 60% of the total pore volume. The present invention further discloses a catalyst for the selective hydrogenation of pyrolysis gasoline comprising (a) the alumina support of the invention and (b) 0.01 to 1.2% by weight of metallic palladium or palladium oxide or palladium oxides based on the weight of the alumina support , having.