Purification Daily Question 2018-10-3 (Short Answer)
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Why is the catalyst sulfided before use? Because the catalyst exists as cobalt oxide and molybdenum trioxide before use and is inactive; it only becomes active after being activated (sulfurized) into a sulfide form. Therefore, it must be activated before use.
Because the catalyst exists as cobalt oxide and molybdenum trioxide before use and is inactive; it only becomes active after being activated (sulfurized) into a sulfide form. Therefore, it must be activated before use.
Because the catalyst exists as cobalt oxide and molybdenum trioxide before use and is inactive; it only becomes active after being activated (sulfurized) into a sulfide form. Therefore, it must be activated before use.
Because the catalyst exists as cobalt oxide and molybdenum trioxide before use and is inactive; it only becomes active after being activated (sulfurized) into a sulfide form. Therefore, it must be activated before use.
Objective: To enhance the catalytic activity of catalysts that have no catalytic activity or only weak catalytic activity by reacting them with sulfur or sulfur compounds. For example, in cobalt-molybdenum catalysts, before sulfidation, their main active components, Co and Mo, exist in oxide form and thus have very low activity； After sulfidation, Co and Mo in their oxidized states transform into their sulfides, exhibiting high activity.
Because the catalyst exists as cobalt oxide and molybdenum trioxide before use and is inactive; it only becomes active after being activated (sulfurized) into a sulfide form. Therefore, it must be activated before use.
Because the catalyst exists as cobalt oxide and molybdenum trioxide before use and is inactive; it only becomes active after being activated (sulfurized) into a sulfide form. Therefore, it must be activated before use.
Before use, the catalyst exists in the form of cobalt oxide and molybdenum trioxide and is inactive; it only becomes active after being activated (sulfurized) into a sulfide form. Therefore, it must be activated before use
Because the catalyst exists as cobalt oxide and molybdenum trioxide before use and is therefore inactive; it only becomes active after being activated (sulfurized) into a sulfide form. Therefore, it must be activated before use.
Because the catalyst exists as cobalt oxide and molybdenum trioxide before use and is inactive; it only becomes active after being activated (sulfurized) into a sulfide form. Therefore, it must be activated before use.
Because the catalyst exists as cobalt oxide and molybdenum trioxide before use and is inactive; it only becomes active after being activated (sulfurized) into a sulfide form. Therefore, it must be activated before use.