Patent ID: 8258076

Claim:
A phosphorus compound adsorbent which comprises a nitrogen-containing compound having an amino group at an end of the molecular structure thereof, a support carrying the nitrogen-containing compound, and at least one metal ion selected from the group consisting of a zinc ion, and a copper ion, which is linked to the nitrogen-containing compound, wherein the nitrogen-containing compound has at least one structure selected from the following chemical formulas 1 to 4: (CH 9 ) n NH 2 (chemical formula 1) (CH 2 ) n NH(CH 2 ) m NH 2 (chemical formula 2) (CH 2 ) n NH(CH 2 ) m (CH 2 ) m NH 2 (chemical formula 3) NH(CH 2 ) m NH 2 (chemical formula 4) wherein each of n's independently represents an integer of from 0 to 3 and each of m's independently represents an integer of from 1 to 3.