Abstract
AbstractDry reforming of methane (DRM) provides valuable syngas from two greenhouse gases, CH4 and CO2. Three alumina‐supported noble metals, Ru, Pt, and Pd, were used as catalysts for the DRM process. Using CO2/CH4 mixtures in the range of 0.5–2 mol mol−1, catalyst performance was assessed in an integral fixed‐bed reactor between 773 and 1073 K. All catalysts were stable for at least 10 h. The DRM kinetics was studied in a differential reactor in the range of 848–898 K, using the power law model. The apparent activation energy values for the consumption of CH4 (86, 89, and 95 kJ mol−1) and CO2 (84, 86, and 91 kJ mol−1) over Ru/Al2O3, Pt/Al2O3, and Pd/Al2O3 as catalysts were found. Several kinetic models of the Langmuir‐Hinshelwood type were considered. A pathway with slow surface reaction between CH4 and CO2 chemisorbed on different types of active sites was found to be most suited to describe the kinetic data.
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