ALUMINA HAVING A COMPLEX PORE STRUCTURE, AND CATALYST AND PROCESS FOR SELECTIVE HYDROGENATION OF CRACKING GASOLINE

摘要

An alumina carrier having a complex pore structure, wherein the surface area of the carrier is in the range of 40-60m²/g, the total pore volume is in the range of 0.3-1.2ml/g, the pore volume of the pores whose diameter is less than 30nm takes up 5-60% of the total pore volume, the pore volume of the pores whose diameter is between 30-60nm takes up 20-75% of the total pore volume, the pore volume of the pores whose diameter is greater than 60nm takes up 20-60% of the total pore volume. A catalyst for selective hydrogenation of cracking gasoline, which comprises (a) the alumina carrier, and (b) 0.01-1.2wt% of palladium present in the form of metal or oxide, based on the weight of the alumina carrier.