The decomposition of natural gas over Pd-NiO/Al2O3 and Pt-Sn/Al2O3 is carried out in a microwave catalytic reaction at room temperature. The decomposition of methane is caused by collision by excitation of unstable electronic state. Measuring the flow rate and plasma power can provide kinetic data and indicate the mechanism. The conversion of C2 products increases from 47 to 63.7% in the microwave plasma catalytic reaction with electric field. Comparing the activities of catalysts, Pd-NiO/Al2O3 bimetallic catalyst is more active than Pt-Sn/Al2O3 catalyst because of modification of the surface of catalysts by carbon formation. The kinetic modeling of plasma of methane conversion seems related to the power of the electric discharge. It was also revealed that proper coking or polymeric carbon formation improves the catalytic activity; therefore, the conversion of methane may increase over Pd-Ni/Al2O3 catalyst in the plasma system.
Research on Chemical Intermediates – Springer Journals
Published: Oct 13, 2004
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