Journal of the Chilean Chemical Society
versión On-line ISSN 0717-9707
CARDENAS T, GALO y OLIVA C, RICARDO. DRIFTS STUDIES OF ACRYLONITRILE ADSORPTION ON Pd/SdO2 AND PdSd/SdO2. J. Chil. Chem. Soc. [online]. 2004, vol.49, n.1, pp. 11-15. ISSN 0717-9707. doi: 10.4067/S0717-97072004000100003.
The acrylonitrile adsorption over Pd/SiO2 and PdSn/SiO2 catalysts wasprepared by "Solvated Metal Atom Dispersion" (SMAD) and analyzed by DRIFTS FTIR are studied. The catalysts were used in pellets and treated with dry N2(g) flow inside a flask in contact with the acrylonitrile vapours for 6 h. A change in the adsorption capacity of acrylonitrile with the increase in Sn content in the catalysts by following the Cº N IR band was studied. The decrease in the acrylonitrile adsorption produced a decrease in the hydrogenation rates of acrylonitrile and an increase in the hydrogenation selectivity to obtain allylamine, mainly due to a greater interaction of Cº N with Sn