Abstract
Ni-CaO-ZrO2 catalysts were prepared by co-precipitation under different conditions and used in the tri-reforming of methane; the influence of preparation conditions on methane conversion and catalytic stability was evaluated. The results indicated that the optimal parameters used to prepare Ni-CaO-ZrO2 catalysts include a calcination temperature of 973 K, a pH value of 10–12 for co-precipitation, and a reflux duration of 24 h. The catalyst prepared under the optimal conditions has a proper surface area and Ni–ZrO2 interaction; it exhibits promising catalytic activity and stability in methane tri-reforming and the methane conversion exceeds 70% under a temperature of 973 K and atmospheric pressure.
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