Jmm. Millet et al., MOSSBAUER SPECTROSCOPIC CHARACTERIZATION OF CATALYSTS OBTAINED BY INTERACTION BETWEEN TETRA-N-BUTYL-TIN AND SILICA OR SILICA-SUPPORTED RHODIUM, Hyperfine interactions, 108(4), 1997, pp. 477-482
Mossbauer spectroscopy at 78 K was used to study the interaction betwe
en tetra-n-butyl-tin and the surfaces of silica or silica supported rh
odium. At room temperature, the tetra-n-butyl-tin was physically adsor
bed on the surfaces. After reaction under hydrogen at 373 K, the forma
tion of grafted organometallic fragments on the Ph surface was confirm
ed whereas with pure silica, =SiO-Sn(n-C4H9)(3) moieties were observed
. After treatment at 523 K, the rhodium grafted organometallic species
was completely decomposed and there was formation of a defined bimeta
llic RhSn compound.