Confusion: Catalyst activity
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This post was last edited by sun-rock on 2011-6-30 08:50. Regarding hydrocracking catalysts, non-precious metal oxide catalysts need to be presulfurized to become active, while precious metal oxide catalysts require reduction activation to exhibit catalytic activity (as cited in Chemical Engineering Processes). However, our teacher in petroleum refining engineering claims that both types of catalysts need to be presulfurized to be active. I ask the experts here to help me solve this problem. Thank you.
Not every catalyst needs to be sulfided. Some catalysts indeed need to be reduced. Sulfidation is done to increase the catalyst’s activity, with the principle of moderately deactivating the catalyst to prevent excessively high initial activity.
Reply to 2# NSHYXFWB, thank you