Lmt. Ngandjui et Fc. Thyrion, KINETIC-STUDY AND MODELIZATION OF N-BUTENES OLIGOMERIZATION OVER H-MORDENITE, Industrial & engineering chemistry research, 35(4), 1996, pp. 1269-1274
n-Butenes have been oligomerized at temperatures lower than 450 K in t
he liquid phase over H-mordenite in a continuously stirred tank reacto
r. The composition and molecular weight of the products are very depen
dent on reaction temperature. Products are essentially dimers, trimers
, and tetramers. The complex reactions were modeled by taking into acc
ount only the type of carbonium ion; the initial rates showed that the
oligomerization reactions followed a Rideal mechanism. The dimerizati
on rate constants of butenes and oligomers decrease with increasing nu
mber of carbon atoms of the olefins, while the adsorption constants in
crease with the hydrocarbon chain length. A model for the conversion o
f butenes to liquid products over H-mordenite is proposed. This model
fits the experimental data rather well, although some simplifying appr
oximations were made to describe these complex reactions.