The pyrolysis of benzene-naphthalene mixtures was carried out in the r
ange of 450-570-degrees-C and the principal products were determined.
The yields of all the products increase at higher temperatures. A meas
ure of the rates of formation of biphenyl and 1,2'-binaphthyl, indicat
es the occurrence of a slight difference between their activation ener
gies. The presence of alumina in the system has been also investigated
.