Electrochemical promotion of the CO2 hydrogenation reaction on composite Ni or Ru impregnated carbon nanofiber catalyst-electrodes deposited on YSZ

Jiménez, Vicente; Jiménez‐Borja, C.; Sánchez, Paula; Romero, Amaya; Papaioannou, Evangelos I.; Theleritis, Demetrios; Souentie, Stamatios; Brosda, S.; Valverde, J.L.

doi:10.1016/j.apcatb.2011.07.016

Cited by 41 publications

(22 citation statements)

References 37 publications

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“…Metals as Pt [28,29], Pd [29], and Ru [30] have been studied as catalysts in the electrochemical activation of CO 2 , in general supported on Na- or K-modified β-alumina, in order to increase the conductivity of the ceramic β-alumina and the chemisorption of CO 2 and H 2 over the metal active sites [29,30]. Non-expensive metals, such as Cu supported on K-β-alumina [31] or Ni supported on YS zeolite [32], have also been studied. Molecular organometallic electrocatalysts have also demonstrated activity and selectivity for the electrocatalytic reduction of CO 2 .…”

Section: Co2 Activation and Processes For Its Hydrogenation Into Mmentioning

confidence: 99%

Methanol Synthesis from CO2: A Review of the Latest Developments in Heterogeneous Catalysis

et al. 2019

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Technological approaches which enable the effective utilization of CO2 for manufacturing value-added chemicals and fuels can help to solve environmental problems derived from large CO2 emissions associated with the use of fossil fuels. One of the most interesting products that can be synthesized from CO2 is methanol, since it is an industrial commodity used in several chemical products and also an efficient transportation fuel. In this review, we highlight the recent advances in the development of heterogeneous catalysts and processes for the direct hydrogenation of CO2 to methanol. The main efforts focused on the improvement of conventional Cu/ZnO based catalysts and the development of new catalytic systems targeting the specific needs for CO2 to methanol reactions (unfavourable thermodynamics, production of high amount of water and high methanol selectivity under high or full CO2 conversion). Major studies on the development of active and selective catalysts based on thermodynamics, mechanisms, nano-synthesis and catalyst design (active phase, promoters, supports, etc.) are highlighted in this review. Finally, a summary concerning future perspectives on the research and development of efficient heterogeneous catalysts for methanol synthesis from CO2 will be presented.

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Section: Co2 Activation and Processes For Its Hydrogenation Into Mmentioning

confidence: 99%

Methanol Synthesis from CO2: A Review of the Latest Developments in Heterogeneous Catalysis

et al. 2019

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“…The NEMCA effect was demonstrated by supplying or removing oxide anions, O 2À , at the metal catalyst through the use of an O 2À conductor such as the gas impervious zirconia solid electrolyte under an applied electric potential. [32][33][34][35][36] A metal counter electrode was used to supply O 2À to the catalyst surface, inducing a spillover of O 2À and thus altering the catalyst work function (Fig. 4A).…”

Section: Electric Potential and Electric Eldmentioning

confidence: 99%

Promoting heterogeneous catalysis beyond catalyst design

2020

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“…1 Hence, while the conventional catalytic promotion is carried out by adding a specific amount of a promoter during the preparation step of the catalyst, in the case of the electrochemical promotion, the electrically induced back-spillover of the promoter species enables the in situ control and enhancement of the catalytic performance of the catalyst film during the reaction step. [4][5][6][7][8] Several EPOC studies have also dealt with the improvement of catalytic materials and the development of electrodes consisting of catalysts highly dispersed on gold, 9 mixed ionic electronic conductors, 10 carbonous materials [11][12][13] and yttria-stabilized zirconia (YSZ), [14][15][16][17] or catalysts based on non-noble (lower cost) metals such as Ni, 11,[18][19][20][21] Fe 4,22,23 and Cu. 3 Nowadays, some of the main challenges of EPOC for further technological progress are the design of scaled-up reactors and material cost minimization.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical activation of an oblique angle deposited Cu catalyst film for H₂ production

González‐Cobos

Rico

González‐Elipe

et al. 2015

Catal. Sci. Technol.

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A novel Cu catalyst film was prepared by oblique angle physical vapour deposition (OAD) on a K-βAl 2 O 3 solid electrolyte (alkaline ionic conductor) for catalytic/electrocatalytic purposes. This technique allowed us to obtain a highly porous and electrically conductive Cu catalyst electrode which was tested in the partial oxidation of methanol (POM) reaction for H 2 production and its catalytic activity was in situ enhanced via electrochemical promotion of catalysis (EPOC). The electropromotional effect was reversible and reproducible, and allowed us to increase both hydrogen and methyl formate production rates by almost three times under optimal promotion conditions (320°C, 2.2 × 10 −7 mol of K + transferred). The observed promotional effect was attributed to a decrease in the Cu catalyst work function as a consequence of the controlled migration of electropositive K + ions which favoured the chemisorption of electron acceptor molecules (O 2 ) at the expense of the electron donor ones (CH 3 OH). Under the reaction conditions these ions formed some kinds of potassium surface compounds as demonstrated by SEM, EDX and XPS post-reaction characterization analyses. The obtained results demonstrate the interest of the used catalyst-electrode preparation technique for the electrochemical activation of non-noble metal catalyst films.

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Electrochemical promotion of the CO2 hydrogenation reaction on composite Ni or Ru impregnated carbon nanofiber catalyst-electrodes deposited on YSZ

Cited by 41 publications

References 37 publications

Methanol Synthesis from CO2: A Review of the Latest Developments in Heterogeneous Catalysis

Methanol Synthesis from CO2: A Review of the Latest Developments in Heterogeneous Catalysis

Promoting heterogeneous catalysis beyond catalyst design

Electrochemical activation of an oblique angle deposited Cu catalyst film for H₂ production

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Electrochemical promotion of the CO2 hydrogenation reaction on composite Ni or Ru impregnated carbon nanofiber catalyst-electrodes deposited on YSZ

Cited by 41 publications

References 37 publications

Methanol Synthesis from CO2: A Review of the Latest Developments in Heterogeneous Catalysis

Methanol Synthesis from CO2: A Review of the Latest Developments in Heterogeneous Catalysis

Promoting heterogeneous catalysis beyond catalyst design

Electrochemical activation of an oblique angle deposited Cu catalyst film for H2 production

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Product

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Electrochemical activation of an oblique angle deposited Cu catalyst film for H₂ production