To efficiently remove mercury and its compds. contained in hydrocarbon oil by using activated carbon having a specified specific surface area and a specified pore radius distribution.
This mercury adsorbent is made of activated carbon having 100-2,500m2/g specific surface area. In the activated carbon, the volume of pores each having ≤25 pore radius is about ≥50%, preferably about ≥70%, especially preferably about ≥80% of the volume of pores each having ≤100 pore radius and the volume of pores each having ≥100 A pare radius is ≤10%, preferably about ≤8% of the volume of pores each having ≤200- pore radius. The total pore volume of the activated carbon means the volume of micropores and transitional pores and it is about ≥0.1ml/g, preferably about 0.15-1.5ml/g.
NAGAI AKIHISA
FUKUDA KAZUYUKI
MURAKAMI TADAHIKO
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