Catalysts using α-FeOOH nanoparticles as the active ingredient were tested by a microreactor-chromatography assessing apparatus at atmospheric pressure between 25 and 60 ℃ with a gas hourly spacevelocity of 10,000 h-1, while the removal performance of H2S with catalysts was investigated using thethermal gravimetric method. The results show that the catalysts are highly active for COS hydrolysis atlow temperatures (≤60 ℃) and high gas hourly space velocity, and the highest activity can reach 100%. Thecatalyst is particularly stable for 12 h, and no deactivation is observed. Nanoparticle α-FeOOH preparedusing hydrated iron sulfate shows higher COS hydrolysis activity, and the optimum calcination temperaturefor the catalyst is 260 ℃. In addition, the catalysts can remove COS and H2S simultaneously, and 60 ℃ isfavorable for the removal of H2S. The compensation effect exists in nanoparticle-based catalysts.
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