Catalyst for decomposing perfluorocompounds

2:

• The catalyst according to claim 1, wherein the aluminum oxide comprises at least one form selected from the group consisting of boehmite (hydrated alumina), alpha alumina (α-alumina), gamma alumina (γ-alumina), delta alumina (δ-alumina) and theta alumina (θ-alumina).

3:

• The catalyst according to claim 1, wherein the second catalyst comprises at least one selected from the group consisting of zirconium oxide (ZrO2), cerium oxide (CeO2) and gallium oxide (Ga2O3).

4:

• The catalyst according to claim 1, wherein the second catalyst comprises at least one selected from the group consisting of zirconium oxide, cerium oxide and gallium oxide, and a mixed phase of alumina and phosphorus.

5:

• The catalyst according to claim 1, further comprising a third catalyst comprising a phosphorus-containing compound.

6:

• The catalyst according to claim 5, wherein a ratio of a converted weight of phosphorus included in the third catalyst to a total weight of the first catalyst is 0.01 to 0.1, and
• the converted weight of phosphorus is a weight obtained by converting the content of phosphorus included in the third catalyst to a content of P2O5.

7:

• The catalyst according to claim 5, wherein the third catalyst further comprises a compound containing at least one selected from the group consisting of B, S, P, Cs, Ca and K.

8:

• The catalyst according to claim 5, further comprising a fourth catalyst comprising at least one oxide selected from the group consisting of Zn, Ni, W, Co, Ni, Cr and Mo.

10:

• The catalyst according to claim 9, wherein a ratio of the weight of the fourth catalyst to the total weight of the first catalyst is 0.01 to 0.2.

11:

• The catalyst according to claim 1, wherein a ratio of the weight of the first catalyst to a total weight of the catalyst is 0.67 to 0.96.

12:

• The catalyst according to claim 1, wherein the catalyst has a honeycomb structure shape comprising a plurality of through channels formed therein.

13:

• The catalyst according to claim 12, wherein the number of through channels per square inch (CPSI) in a planar direction perpendicular to an extension direction of the plurality of through channels is 50 to 150.