Design of stable Ni catalysts for partial oxidation of methane to synthesis gas

The supported Ni catalysts with CaAl 2O 4 spinel compound layer existed between Ni and Al 2O 3 have been prepared, and the effect of the CaAl 2O 4 spinel layer on the stability of the catalysts for the partial oxidation of methane to syngas (CO+H 2) has been investigated at high space velocity (250 L·g −1·h −1). Also, the catalysts have been characterized by XRD, TG/DTA. The Ni catalysts with CaAl 2O 4 spinel layer existed between Ni and Al 2O 3 show good stability for this process with the CH 4 conversion of ∼83%, syngas selectivity of >90% and the coke deposit of