Gas A is decomposed at 700 C with a partial

pressure of 1 atm, with a first-order irreversible

reaction, in a constant bed isothermal reactor,

volume 100 cm3. The reactor contains spherical

catalyst granules, 5 mm in diameter, and the bed

porosity is 0.5. The rate of decomposition is 0.25

Kmol/ sec. The effective diffusion of the reactant

in the catalyst granules is

1.0 x 10-6 m2 l/ sec.

a)Develop the equation of external isothermal and non-isothermal efficiency factor for a zero order reaction.(A->B)

b) Write the thiele modulus expression as well as the efficiency factor and then calculate them right(with right units).

c) What can i do to eliminate all resistances of internal diffusion and calculate the radius to achieve that.