Chemical Reaction Engineering
Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?

None of these
The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process
There is no dynamic equilibrium between successive layer
Langmuir

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Chemical Reaction Engineering
Promoter.

Atlers the position of equilibrium in a reversible reaction
Initiates a chemical reaction and is a catalyst by itself
Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals
All of these

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