Under the conditions similar to industrial ammonia synthesis

the intrinsic kinetics of Series "A" Catalysts (A110

A106) made in China for ammonia synthesis has been investigated. After the experiment data have been correlated by corrective expression of simple Temkin-Pyzhev equation

it is found that this equation is also valid for intrinsic kinetics of Series "A" Catalysts in ammonia synthesis. With the aid of computation of optimum program

we find that it is most desirable to take the value of 0.5 for a in Temkin-Pyzhev equation. The apparent energy of activation has been found to be between 40

000-45

000 kcal/kg-mol. This agrees to the results found by the previous workers. A suitable kinetics equation and kinetics parameters for application to engineering are suggested. By comparative study of kinetic data

the author have verified that the performance of catalyst A110 is better than A106 and those foreign-made commercial catalysts of same type

especially in the lower temperature range.