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The effects of the addition of Ag, Au, or Rh to a 15wt% Co/SiO 2 catalyst on the Fischer–Tropsch (FT) synthesis were studied. Both Au and Rh showed a promoting effect on the FT activity, whereas the addition of Ag decreased the activity. The addition of a small amount of Rh (0.1–0.5wt%) increased the CO conversion by 50% without affecting the selectivity. It was found that Rh catalyzed the...
A model Co/SiO 2 catalyst was prepared by depositing cobalt on silica films in ultrahigh vacuum conditions. Fischer–Tropsch synthesis was carried out at a total pressure of carbon monoxide and hydrogen between 0.33 and 1.0bar. The effects of reaction temperature and pressure on kinetics and chain growth probability were investigated. The turnover frequency, activation energy, and product distributions...
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