The kinetics of hydrogenation of benzene over a nickel catalyst under industrial conditions

A method was developed for differential kinetic studies run in a Temkin reactor under conditions of initial reaction rate over a 45% NiO/Al2O3-CaO (KUB-3) catalyst, phi5 mm, 7 grains kept in a thermostated channel and sepd. by glass spheres. The reactor was operated in a differential regime, conversion less than or equal to 10%, with the bed working under nearly isothermic conditions. Studies on the effects of temp. (t = 150-250degreesC at 0.3 MPa), deg. of C6H6-->C6H12 conversion (x = 5-80%) overall pressure (p = 0.2-0.6 MPa at 200degreesC), and H-2/ C6H6 mole ratio (s = 0.5-7 at 200degreesC, 0.3 MPa) showed the hydrogenation rate (r(B)) to follow Authors' original empirical eqn., r(B) = A(.)f(t)(.)f(x)(.)f(p)(.)f(s)(.)(1-K-x/K-p), where A = const (at 200degreesC, 0.3 MPa, s = 3, x = 5%); f(t), f(x), f(p) and f(s) - polynomials of the resp. variables, and the term in parentheses describes the distance from equil.