If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to___________________?

Related Mcqs:

Brunauer, 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 ?

A. Langmuir’s assumption applies to every adsorbed layer B. There is no dynamic equilibrium between successive layer C. 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 D. None of these...

Which of the following fixes the volume of a batch reactor for a particular conversion and production rate ?

A. Operating conditions (e.g. pressure and temperature) B. Rate constant C. Density of mixture D. None of these...

Time required for 50% decomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required for 75% decomposition will be about _______________ minutes?

A. 3 B. 4 C. 6 D. 10...

Decomposition rate of a liquid ‘X’ which decomposes as per the reaction as shown in the bellow figure is given by________________?

A. K1 . CX B. (K1 + K2 + K3) CX C. (K1 + K2) CX D. (K2 + K3) CX...

Effectiveness factor of a catalyst pellet is a measure of the _________________ resistance?

A. Pore diffusion B. Gas film C. Chemical reaction D. None of these...