| 摘要 |
Disclosed herein is a hydrogen sulfide production-suppressing member, comprising: a sulfur-adsorbing portion 2 comprising an oxide comprising at least ceria, the sulfur-adsorbing portion 2 being disposed upstream side of an exhaust gas; and a sulfur-releasing portion 3 being disposed downstream side of the sulfur-adsorbing portion 2 and having surface acidity higher than that of the sulfur-adsorbing portion 2. SOx adsorbed on the sulfur-adsorbing portion is released in a high-temperature zone, but the released SOx is difficult to adsorb on the sulfur-releasing portion 3, and thus is not adsorbed again. Thus, the production of H2S is suppressed without using environmental loading substances such as nickel.
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