COMPOUND INCLUDING ACTIVATED METAL AND LIGAND, CARBON DIOXIDE ABSORBENT INCLUDING THE COMPOUND, METHOD OF PREPARING THE CARBON DIOXIDE ABSORBENT, AND METHOD OF REMOVING CARBON DIOXIDE
Provided is a compound including an activated metal and a ligand, a carbon dioxide (CO 2 ) absorbent including the compound, a method of preparing the CO 2 absorbent, and a method of removing CO 2 .
1 . A compound comprising:
an activated metal; and
a ligand.
2 . The compound of claim 1 , wherein the activated metal comprises zinc.
3 . The compound of claim 1 , wherein the ligand comprises at least one selected from the group consisting of Tris(hydroxyl-1-benzimidazolylmethyl)amine, Tris(nitro-2-benzimidazolylmethyl)amine, 2,2-(methoxy(6-methoxypyridin-2-yl)methylene)dipyridine, and Tris(2-(6-methoxy)pyridyl)methanol.
4 . The compound of claim 1 , wherein the compound is represented by Formula 1,
wherein R and R′ are independently selected from the group consisting of hydrogen (H), hydroxide (OH), nitrogen dioxide (NO 2 ), and sulphonic acid (SO 3 H).
5 . The compound of claim 1 , wherein the compound is represented by Formula 2,
6 . The compound of claim 1 , wherein the compound is represented by Formula 3,
7 . The compound of claim 1 , wherein the compound is represented by Formula 4,
8 . The compound of claim 1 , wherein the compound is represented by Formula 5,
9 . The compound of claim 1 , wherein the activated metal ranges from 10 weight % (wt %) to 35 wt % of the compound, and
the ligand ranges from 65 wt % to 90 wt % of the compound.
10 . A carbon dioxide (CO 2 ) absorbent comprising the compound of claim 1 .
11 . A method of preparing a carbon dioxide (CO 2 ) absorbent, the method comprising:
preparing a compound comprising an activated metal and a ligand.
12 . The method of claim 11 , wherein the activated metal comprises zinc.
13 . The method of claim 11 , wherein the ligand comprises at least one selected from the group consisting of Tris(hydroxyl-1-benzimidazolylmethyl)amine, Tris(nitro-2-benzimidazolylmethyl)amine, 2,2-(methoxy(6-methoxypyridin-2-yl)methylene)dipyridine, and Tris(2-(6-methoxy)pyridyl)methanol.
14 . The method of claim 11 , wherein the activated metal ranges from 10 weight % (wt %) to 35 wt % of the compound, and
the ligand ranges from 65 wt % to 90 wt % of the compound.
15 . A method of removing carbon dioxide (CO 2 ), the method comprising:
contacting gas containing CO 2 with a CO 2 absorbent comprising a compound comprising an activated metal and a ligand;
absorbing CO 2 from the gas; and
regenerating the CO 2 absorbent.
16 . The method of claim 15 , wherein the absorbing is performed in the pressure range between atmospheric pressure and 10 atmospheres (atm) and the temperature range between room temperature and 70° C.
17 . The method of claim 15 , wherein the regenerating is performed in the pressure range between 0.01 and 5 atm and the temperature range between 80° C. and 150° C.
18 . The method of claim 15 , wherein the compound comprising the activated metal and the ligand is dissolved in water or a CO 2 absorbent, or comprises nanoparticles.
19 . The method of claim 15 , wherein the compound comprising the activated metal and the ligand circulates.
20 . The method of claim 15 , wherein the CO 2 absorbent further comprises at least one selected from the group consisting of a tertiary amine, potassium carbonate (K 2 CO 3 ), lithium carbonate (Li 2 CO 3 ), sodium carbonate (Na 2 CO 3 ), and rubidium carbonate (Rb 2 CO 3 ).