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Presulfided CoMoS/γ-Al 2 O 3 catalysts with sharp and deep eggshell concentration profiles of Co and Mo were prepared by a simple method and their properties were characterized by EDS, HRTEM, and FT-IR techniques. It was found that the Co eggshell thickness of the as-prepared catalysts could be conveniently regulated by controlled evaporation depth of the pre-soaked n-decane in the...
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