| Abstrakt: |
It is demonstrated that H2, removal through Pd foil membranes can enhance the CO2, reforming of CH4. At 550°C and low flows over Pt/γ ‐Al2O3, pellets, conversions were twice that of a conventional reactor, while H2O formation was suppressed, resulting in H2/CO effluent ratios of 1.0. Larger sweep flows enhanced the reaction somewhat, and the replacement of Pt/γ ‐Al2O3, with Pt/ZrO2 mitigated catalyst deactivation in H2‐poor operating environments. A quantitative correlation was established between reaction enhancement and the overall H2 removal to production ratio. Based on this correlation, a simple membrane reactor equilibrium model was developed for comparison against experimental data. Subsequently, a unique and useful “on‐the‐fly” method of gauging membrane limitations, catalyst limitations, and modes of deactivation within a membrane reactor was demonstrated. |
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