THE EFFECT OF ALKALI-METAL SALTS PROMOTED MGO CATALYSTS FOR THE OXIDATIVE COUPLING OF METHANE

Catalytic activities of the alkali metal salts are discussed based on experimental observations in a fixed bed flow reactor at atmospheric c ondition and instrumental analysis. LiCl (30 wt%) and NaCl (30 wt%) pr omoted MgO catalyst showed superior activity to mono alkali metal salt s promoted MgO catalysts based on the C-2 yield. This suggests that th e bialkali metal salts neutralize the nonselective acid sites due to s ynergistic effect. Moreover, it is estimated that the active sites is O- ions.