ZnO chemisorbs H ₂ S as ZnS in inert atmospheres and catalyzes H ₂ S to SO ₂ oxidation in the presence of O ₂ . ZnO nanoparticle dispersion is preserved after extrusion of ZnO/sepiolite composites and favors H ₂ S removal.
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Portela et al. (2014) studied this question.
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