CHLORINE GAS DECOMPOSITION CATALYST AND EXHAUST GAS TREATMENT APPARATUS
[Technical Problem] To provide a chlorine gas decomposition catalyst that can remove chlorine gas contained in, for example, exhaust gas, with high efficiency, and is less likely to reduce catalyst components when used. [Solution to Problem] A chlorine gas decomposition catalyst, including a composite oxide (X) of Al and at least one element M1 selected from the group consisting of Ce and Co.
1 . A chlorine gas decomposition catalyst, comprising a composite oxide (X) of Al and at least one element M1 selected from the group consisting of Ce and Co.
2 . The chlorine gas decomposition catalyst according to claim 1 , wherein the composite oxide (X) has a Ce content of 5% by mass or more and a Co content of 5% by mass or more.
3 . The chlorine gas decomposition catalyst according to claim 1 , wherein the composite oxide (X) is a composite oxide of the element M1, Al and Cu.
4 . The chlorine gas decomposition catalyst according to claim 3 , wherein the composite oxide (X) has a Cu content of 0.1% by mass or more.
5 . The chlorine gas decomposition catalyst according to claim 1 , having a specific surface area of 50 m 2 /g or more, a total pore volume of 0.3 cm 3 /g or more and an average pore diameter of 5 nm or more.
6 . The chlorine gas decomposition catalyst according to claim 1 , wherein the composite oxide (X) is a porous substance.
7 . The chlorine gas decomposition catalyst according to claim 1 , for decomposing chlorine gas contained in exhaust gas.
8 . The chlorine gas decomposition catalyst according to claim 7 , wherein the exhaust gas contains a perfluoro compound.
9 . An exhaust gas treatment apparatus comprising a reactor into which exhaust gas comprising chlorine gas is introduced, wherein the reactor is equipped with the chlorine gas decomposition catalyst according to claim 1 .
10 . The exhaust gas treatment apparatus according to claim 9 , wherein the exhaust gas contains a perfluoro compound.
11 . The exhaust gas treatment apparatus according to claim 10 , further comprising a reactor filled with a perfluoro compound decomposition catalyst.
12 . The exhaust gas treatment apparatus according to claim 9 , comprising a supply device that supplies water to the exhaust gas.
13 . The exhaust gas treatment apparatus according to claim 9 , comprising a heating device that heats the exhaust gas.
14 . The exhaust gas treatment apparatus according to claim 13 , comprising a temperature detector that detects a temperature of the exhaust gas supplied to the reactor, and a control device that controls the heating device based on a temperature measured by the temperature detector.
15 . The exhaust gas treatment apparatus according to claim 9 , comprising a cooling device that cools gas discharged from the reactor.
16 . The exhaust gas treatment apparatus according to claim 9 , comprising a removal device that removes an acid gas from gas discharged from the reactor.
17 . A method for decomposing chlorine gas, comprising bringing gas containing chlorine gas into contact with the chlorine gas decomposition catalyst according claim 1 in the presence of water.