S. Meijers et al., FTIR STUDY OF THE ADSORPTION AND TRANSFORMATION OF ALLYLBENZENE OVER OXIDE CATALYSTS, Journal of the Chemical Society. Faraday transactions, 91(12), 1995, pp. 1861-1869
Citations number
35
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
The interaction of allylbenzene with oxide catalyst surfaces having di
fferent surface characters, such as acidic (alumina, titania, silica-a
lumina, tungsta-alumina and sulfated titania), basic (magnesium oxide)
and redox character (vanadia-titania and magnesium chromite), and wit
h slightly reducible transition-metal oxides (zirconium and zinc oxide
s) has been investigated by FTIR spectroscopy. For acidic catalysts, p
olymerization (sulfated titania) and the formation of 1-phenyl-2-propo
xide by the addition of an OH over the vinylic bond have been observed
. For ZnO, TiO2 and vanadia-titania the features of a species identifi
ed as a pi-allylbenzyl have been observed. For redox surfaces this int
ermediate converts rapidly to an oxidized species resulting in benzyli
c C-C bond breaking. For MgO and ZrO2 no reaction has been found. The
mechanism of C-H activation over these surfaces is briefly discussed.