Abstract
Modified bentonites were used for the oxidation of H2S into elemental sulfur. Active phases such as iron and cobalt sulfide were added to supports Cloisite 30B and 15A. The produced nano adsorbents were characterized by X-Ray diffraction, ICP, BET surface area and SEM. Selective oxidation of H2S was carried out over the nano adsorbent in the experimental setup. The tests were performed at 70 and 180 °C, under atmospheric pressure and in the presence of 5,000 ppm of H2S in the inlet gas stream. The results confirmed the increase in the distribution of active metals and activity of Cloisite 30B, in comparison with Cloisite 15A. Cobalt-containing support showed significant improvement in the capacity of H2S removal, and in the outlet stream less than 50 ppm of H2S was detected.
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