The crystalline zeolite $(P)$ is synthesised from an amorphous substrate $(A)$ in aqueous sodium hydroxide in a well$-$agitated isothermal batch reactor at $100C.$ The substrate $($A$)$ rapidly dissolves into soluble species $(S)$ and crystallised into a crystalline zeolite $(P)$ following an autocatalytic reaction,

$A+PS+PP+P$

The reaction rate equation is given as$,$

$-r_A=\frac{k_2(C_{\text{N}\text{a}\text{O}\text{H}}{)}^{k_1}{C}_A{C}_P}{k_3{C}_P+(k_3+1)C_A}$

where, $C_A$ and $C_P$ are the concentrations of amorphous substrate and crystalline zeolite in $kg.m^{-3},$ and $C_{\text{N}\text{a}\text{O}\text{H}}$ is the concentration of sodium hydroxide in $kmo{l}^{-3}{m}^{-3}.$ The kinetic parameters, $k_1,k_2$ and $k_3$ are given at the reaction temperature of $100C$ as $2\mathrm{.}36,6\mathrm{.}25{10}^{-4}kmo{l}^{-2\mathrm{.}36}{m}^{7\mathrm{.}08}{s}^{-1}$ and $0\mathrm{.}36,$ respectivelv,