The catalytic liquid phase irreversible reaction $(AB)$ is performed using a non$-$porous catalyst. Several experiments have been performed and it was shown that the intrinsic reaction kinetics can be described according to:

$-r_A=\frac{c_1{C}_{As}}{1+c_2{C}_{As}},-r_{A}inmol{m}^{-2}{s}^{-1}$ and $C_{A}inmol{m}^{-3}$

Where $C_{AS}$ is the concentration of $A$ on the catalyst surface. The constants $c_1$ and $c_2$ were fitted and found to be $1\mathrm{.}5*{10}^{-3}m{s}^{-1}$ and $1\mathrm{.}0*{10}^{-3}{m}^{3}mo{l}^{-1}$ respectively.

To further study the reaction, experiments are carried out in a long pipe $(L=10m,$ where the inside of the pipe