Can anyone shed some light on why are Ni powder catalysts used only supported on substrate?

Marta Michalska-Domańska @Marta_Michalska-Domanska2

06 June 2013 1 7K Report

I was searching for information on Ni powder catalyst, and found that Ni powder is always deposited on a substrate, for example, SiO 2. Why Ni powder isn't placed directly in the reactor, without a substrate?

Kinshuk Dasgupta

For catalysis high surface area is required. When Ni is deposited on surface, it is in dispersed condition. So large surface area is available. If as such powder is used there is always tendency to agglomerate thus losing the surface area.

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