The catalytic activities of magnetoplumbite oxides LaNi_(0.5)M_(0.5) Al_(11)O_(19 + δ) (M = Mn, Fe, Cu, Co) and LaNi_xCo_(1-x)Al_(11)O_(19 + δ) were studied for methane reforming with carbon dioxide to synthesis gas. The structure and physical properties of the series of LaNi_xCo_(1-x)Al_(11)O_(19 + δ) were characterized by means of XRD, TPR and UV-DRS. The results showed that this series of catalysts exhibited almost the same crystal structure and similar reduction stability. The reduced LaNi_(0.5)Co_(0.5)Al_(11)O_(19 + δ) exhibited the best catalytic activities. At x ≤ 0.375, the activities of the catalysts increased with the increase of x value. However, at 0.375 ≤ x ≤ 1.0, the activities of the catalysts were almost not changed.

Key words: LANTHANUM OXIDE, NICKEL OXIDE, ALUMINIUM OXIDE, METHANE, CARBON DIOXIDE, REFORMING REACTION, SYNTHETIC GAS, CATALYTIC ACTIVITY