Question: Develop an expression for Thiele modulus, the concentration profile and the catalyst effectiveness factor when the reversible reaction A = B occurs in a porous

Develop an expression for Thiele modulus, the concentration profile and the catalyst
effectiveness factor when the reversible reaction A = B occurs in a porous catalyst
whose half-length is L with a height H and width W. The equilibrium constant is K
= kf/kr. Assume that diffusion mainly occurs in the x-coordinate, which is also
associated with the catalyst half-length L. The effective diffusivity for specie A is
DAe and the local concentrations of species A and B are

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