Abstract
Catalytic and adsorption properties of (Pt + Fe) SiO 2 catalysts prepared by coimpregnation of SiO 2 with FeCl 3 and H 2 PtCl 6 aqueous solutions have been studied. According to the X-ray diffraction data, FePt particles of the size 5–36 nm and bcc or fcc crystal lattice are formed during the reduction of catalysts by flowing hydrogen. Bimetallic catalysts exhibit higher specific activity for the reaction of CO hydrogenation than do monometallic samples. The enhanced activity of FePt particles manifests itself mainly through increased formation of C 4+ olefins. These observations suggest that the effect of Pt addition on the catalytic properties of silica-supported iron in CO hydrogenation is similar to the effect of potassium addition.
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