Development of a new electrochemical catalyst with an electrochemically assisted regeneration ability for H2 production at low temperatures

Lucas-Consuegra, A. de; Caravaca, A.; Martínez, Pedro García; Endrino, José L.; Dorado, Fernando; Valverde, J.L.

doi:10.1016/j.jcat.2010.07.007

Cited by 35 publications

(28 citation statements)

References 34 publications

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“…The EPOC phenomenon with alkaline ionic conductors was also applied in catalytic H 2 production and purification processes. De Lucas-Consuegra et al 316 have explored the H 2 production from methane via steam reforming, partial oxidation, and autothermal steam reforming over a (Pt−Pt/YSZ/Na + -β″ Al 2 O 3 ) electrochemical catalyst. Among the different explored reaction compositions, the autothermal steam reforming process seems to be the most suitable one for the operation of the electrochemical catalyst under cyclic positive and negative polarizations.…”

Section: Hydrogen Production and Purificationmentioning

confidence: 99%

Ionically Conducting Ceramics as Active Catalyst Supports

et al. 2013

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Section: Hydrogen Production and Purificationmentioning

confidence: 99%

Ionically Conducting Ceramics as Active Catalyst Supports

et al. 2013

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“…around 60 nm) by direct impregnation of Pt precursor solution salts [25] or the application of metal pastes (values up to 500 nm) [26], which are the most common preparation techniques for such kind of catalytic-electrocatalytic films. It is worth noting that the preparation of Pt catalyst-electrodes films with small grain sizes is of great research interest due the higher kinetic activity [26]. In addition, the cathodic arc deposition method allows to better control the deposition conditions and hence a better reproducibility of the catalyst-electrode films.…”

Section: Resultsmentioning

confidence: 99%

Direct production of flexible H2/CO synthesis gas in a solid electrolyte membrane reactor

Lucas-Consuegra

Gutiérrez-Guerra

Endrino

et al. 2015

J Solid State Electrochem

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The development of novel configurations for the production of synthesis gas (syn-gas) of flexible H 2 /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 2 /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 (C 2 H 5 OH/H 2 O=0.7 %/2 %). The application of different polarizations at temperature range (600-700°C) allows to control the H 2 /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 2 /CO adjustment was managed without the requirement of external O 2 feeding to the reactor. An increase in the applied current or potential caused the H 2 /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 2 /CO ratio at a fixed potential was achieved at higher temperatures due to the further reaction of the produced H 2 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 2 , syn-gas and electricity may be produced from bioethanol.

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“…Fishbone type carbon nanofibers were grown at atmospheric pressure in a fixed-bed reactor at 600 • C and a space velocity of 25,000 h −1 according to the procedure described in detail in [23]. The preparation is based on chemical vapour deposition (CVD) of a H 2 /C 2 H 4 mixture over a Ni/SiO 2 catalyst.…”

Section: Preparation and Activation Of Cnfsmentioning

confidence: 99%

“…De Lucas-Consuegra et al studied recently [23] dispersed catalysts deposited on a solid electrolyte (i.e. Na-␤Al 2 O 3 ) in order to increase the metal dispersion and reduce the amount of metal needed for the electrochemical promotion of the H 2 production at low temperature form CH 4 with a high CO 2 selectivity.…”

Section: Introductionmentioning

confidence: 99%