Carbon dioxide decomposition into carbon with the rhodium-bearing magnetite activated by H2-reduction

Article abstract of DOI:10.1007/BF00400865

The CO₂ decomposition into carbon with the rhodium-bearing activated magnetite (Rh-AM) was studied in comparison with the activated magnetite (AM). The Rh-AM and the AM were prepared by flowing hydrogen gas through the rhodium-bearing magnetite (Rh-M) and the magnetite (M), respectively. The rate of activation of the Rh-M to the Rh-AM was about three times higher than that of the M to the AM at 300 °C. The reactivity for the CO₂ decomposition into carbon with the Ph-AM (70% CO₂ was decomposed in 40 min) was higher than that with the AM (30% in 40 min) at 300 °C. The Rh-M was activated to the Rh-AM at a lower temperature of 250 °C, and the Rh-AM decomposed CO₂ into carbon at 250°C. On the other hand, the M was little activated at 250 °C.