التفاصيل البيبلوغرافية
| العنوان: |
Direct production of flexible H/CO synthesis gas in a solid electrolyte membrane reactor. |
| المؤلفون: |
Lucas-Consuegra, A., Gutiérrez-Guerra, N., Endrino, J., Serrano-Ruiz, J., Valverde, J. |
| المصدر: |
Journal of Solid State Electrochemistry; Oct2015, Vol. 19 Issue 10, p2991-2999, 9p |
| مصطلحات موضوعية: |
SYNTHESIS gas, SOLID electrolytes, MEMBRANE reactors, ARTIFICIAL membranes, CATALYSTS |
| مستخلص: |
The development of novel configurations for the production of synthesis gas (syn-gas) of flexible H/CO ratio is of great importance to reduce the cost for the synthesis of synfuels and high-value chemicals. In this work, we propose a radically novel approach to the direct production of syn-gas with flexible H/CO ratio based on the solid electrolyte membrane reactor (SEMR). For that purpose, a single-chamber solid electrolyte membrane reactor based on yttria-stabilized zirconia (YSZ) has been developed (Pt/YSZ/Pt), where both active Pt catalysts-electrodes were exposed to the same reaction atmosphere (CHOH/HO = 0.7 %/2 %). The application of different polarizations at temperature range (600-700 °C) allows to control the H/CO ratio of the obtained syn-gas, i.e., the ratio was varied between 1.5 and 12 under polarization conditions. Unlike conventional catalytic partial oxidation processes, the H/CO adjustment was managed without the requirement of external O feeding to the reactor. An increase in the applied current or potential caused the H/CO ratio to increase vs. the open-circuit conditions where ethanol reforming occurred on the Pt catalyst-electrodes which is due to an increase in the rate of the electro-catalytic processes. On the other hand, a decrease in the H/CO ratio at a fixed potential was achieved at higher temperatures due to the further reaction of the produced H with the rest of the species present in the gas phase, leading to a decrease in the faradaic efficiency. The proposed configuration may be of great interest especially for biorefinery applications where H, syn-gas and electricity may be produced from bioethanol. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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