CHLORINE GAS DECOMPOSITION CATALYST, EXHAUST GAS TREATMENT DEVICE, AND METHOD FOR DECOMPOSING CHLORINE GAS
To provide a means removing chlorine gas, which can remove chlorine gas contained in, for example, exhaust gas with high efficiency and does not require frequent exchange. A chlorine gas decomposition catalyst including a metal oxide (X), wherein the metal oxide (X) includes an oxide (X 1 ) of at least one element selected from the group consisting of Ce and Co.
1 . A chlorine gas decomposition catalyst comprising a metal oxide (X), wherein
the metal oxide (X) comprises an oxide (X 1 ) of at least one element selected from the group consisting of Ce and Co.
2 . The chlorine gas decomposition catalyst according to claim 1 , wherein the oxide (X 1 ) comprises cerium oxide.
3 . The chlorine gas decomposition catalyst according to claim 1 , wherein the oxide (X 1 ) comprises a composite oxide of Ce and at least one element M selected from the group consisting of Mg, Cr, Mn, Fe, Co, Ni, Cu and Zr.
4 . The chlorine gas decomposition catalyst according to claim 3 , wherein the metal oxide (X) further comprises an oxide of the element M excluding Co.
5 . The chlorine gas decomposition catalyst according to claim 1 , wherein the oxide (X 1 ) comprises cobalt oxide.
6 . The chlorine gas decomposition catalyst according to claim 1 , comprising a support and the metal oxide (X) supported on the support.
7 . The chlorine gas decomposition catalyst according to claim 1 for decomposing chlorine gas contained in exhaust gas.
8 . An exhaust gas treatment apparatus comprising a reactor into which exhaust gas containing chlorine gas is introduced, wherein the reactor is provided with the chlorine gas decomposition catalyst according to claim 1 .
9 . The exhaust gas treatment apparatus according to claim 8 , wherein the exhaust gas contains a perfluoro compound.
10 . The exhaust gas treatment apparatus according to claim 9 , wherein the reactor is provided with a perfluoro compound decomposition catalyst.
11 . The exhaust gas treatment apparatus according to claim 8 , comprising a device that supplies water to the exhaust gas.
12 . The exhaust gas treatment apparatus according to claim 8 , comprising a heating device that heats the exhaust gas.
13 . The exhaust gas treatment apparatus according to claim 8 , comprising a cooling device that cools gas exhausted from the reactor.
14 . The exhaust gas treatment apparatus according to claim 8 , comprising a removal device that removes an acid gas from gas exhausted from the reactor.
15 . The exhaust gas treatment apparatus according to claim 8 comprising a temperature detector that detects a temperature of the exhaust gas supplied to the reactor, and a controller that controls the heating device based on temperature measured by the temperature detector.
16 . A method for decomposing chlorine gas, comprising bringing a gas containing chlorine gas into contact with the chlorine gas decomposition catalyst according to claim 1 in the presence of water.