Oa. Ferretti et al., IMPROVEMENTS IN SELECTIVITY AND STABILITY OF RH CATALYSTS MODIFIED BYSNBU4 - DEHYDROGENATION OF ISOBUTANE TO ISOBUTENE, Reaction kinetics and catalysis letters, 63(1), 1998, pp. 115-120
RhSn/SiO2 bimetallic catalysts prepared via an organometallic route ha
ve proved to be very active and selective toward several hydrogenation
reactions. In this work these catalysts were studied for the dehydrog
enation of isobutane to isobutene. It was found that Rh/SiO2 monometal
lic catalysts had a null selectivity to isobutene, and this selectivit
y increased up to more than 90 % after the addition of tin, using SnBu
4 as precursor.