ALUMINA CARRIER, METHOD FOR MANUFACTURING THE SAME AND HYDROGENATION/DEMETALLATION CATALYST USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a hydrogenation/demetallation catalyst exhibiting high demetallation activity even when the amount of a hydrogenation-active metal component is small and to provide an alumina carrier having a specific pore structure suitable for the hydrogenation/demetallation catalyst.;SOLUTION: The alumina carrier is such an alumina molding that the specific surface area (SA) measured by a BET method based on nitrogen adsorption is within 100-250 m²/g, the total pore volume (PV_T) of pores having ≥4 nm pore diameter which is measured by a mercury porosimetry is within 0.50-1.50 ml/g and the average pore diameter (PD_A) corresponding to 1/2 of the total pore volume (PV_T) is within 15-30 nm. The alumina molding has a first peak of a pore volume distribution within 8-20 nm pore diameter and a second peak of the pore volume distribution within 18-30 nm pore diameter. The value of the second peak is larger than that of the first peak. The pore volume (PV_M) of pores having ≥100 nm pore diameter is ≤0.05 ml/g.;COPYRIGHT: (C)2007,JPO&INPIT