Reduction of greenhouse gas emissions by catalytic processes

Centi, Gabriele; Rak, Z.

doi:10.1016/s0926-3373(02)00207-2

Cited by 61 publications

(21 citation statements)

References 17 publications

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“…In addition, a quick deactivation of the electrodes was observed due to the higher current densities under these conditions [7,11]. In order to partly resolve these issues, the use of gas diffusion electrodes (GDEs) and/or catalysts supported on nanostructured carbon materials has been proposed over the last few decades [21,[33][34][35][36][37][38][39][40]. These porous electrodes allow a good distribution of the reactives over the catalyst surface, obtaining a large reaction area while provide low current density with high current efficiency for the formation of products.…”

Section: Introductionmentioning

confidence: 99%

“…Surprising a mixture of C1-C9 hydrocarbons and alcohols were found in different GDEs based on noble metals supported on modified carbon cloths [36,39]. Pérez-Rodríguez et al reported the formation of formic acid below -0.7 V vs. Ag/AgCl, at atmospheric pressure and room temperature using iron-oxide electrodes supported on treated Vulcan XC-72R [35], while bulk Fe electrodes produce H 2 as the main product under the same conditions [41].…”

Section: Introductionmentioning

confidence: 99%

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Pd catalysts supported onto nanostructured carbon materials for CO2 valorization by electrochemical reduction

Pérez-Rodríguez

Rillo

Lázaro

et al. 2015

Applied Catalysis B: Environmental

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Pd nanoparticles have been supported onto different novel carbon materials to be used in the electroreduction of CO 2 to high-added value products. Carbon nanocoils (CNCs), carbon nanofibers (CNFs) and ordered mesoporous carbon materials (OMCs) have been studied as support of the catalysts. In addition, Pd catalyst supported onto Vulcan XC-72R has been synthesized in order to establish a comparison with the commercial support. In this way, the influence of the carbon material on the physicochemical and electrochemical properties of the catalysts for the CO 2 electroreduction process can be analyzed. Supports presented different morphologies and structures. CNFs and CNCs exhibited a crystalline structure with well-aligned graphitic layers and OMCs a hexagonal ordered structure composed of not crystalline carbon. Finally, Vulcan presented an intermediate structure between amorphous and graphitic. These differences do not affect significantly the average Pd crystallite size, although a different metal dispersion was found depending on the carbon material. On the other hand, cyclic voltammetry studies showed that CO 2 was effectively reduced to other species at the surface of Pd/C catalysts. Additionally, it was proved that these species were adsorbed onto Pd at-1.0 V vs Ag/AgCl. Finally, a different catalytic activity towards the CO 2 reduction reaction was observed for the different electrocatalysts, indicating an influence of the carbon support.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pd catalysts supported onto nanostructured carbon materials for CO2 valorization by electrochemical reduction

Pérez-Rodríguez

Rillo

Lázaro

et al. 2015

Applied Catalysis B: Environmental

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“…Although most of the past efforts have been focused on NO X (NO + NO 2 ) emission control [6][7][8][9][10][11], nowadays considerable attention has been dedicated on N 2 O abatement, since its harmful impact on the greenhouse effect and stratospheric ozone depletion have been recently recognized [12][13][14]. To this end, the catalytic decomposition of N 2 O to N 2 and O 2 constitutes one of the most efficient approaches Solid State Ionics 192 (2011) 653-658 for N 2 O abatement.…”

Section: Introductionmentioning

confidence: 99%

A comparison between electrochemical and conventional catalyst promotion: The case of N2O reduction by alkanes or alkenes over K-modified Pd catalysts

et al. 2011

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“…We proposed a photoelectrocatalytic (PEC) device with these characteristics and which operates in gas phase to allow an easier collection of the products of reaction [21,22]. A first relevant step to go in this direction is to demonstrate the possibility of electrocatalytic reduction of CO 2 to longer carbon-chain hydrocarbons or alcohols [23].…”

Section: Carbon Dioxide Conversion To Fuelsmentioning

confidence: 99%

“…In the photoelectrocatalytic (PEC) device [21][22][23] the general assembly is similar to a PEM fuel cell and the photoanode is separated from the electrocathode by a proton-conducting membrane (Nafion Ò 117, for example). The PEC device is characterized by (i) a gas diffusion membrane (GDM) electrode for CO 2 reduction which operates in the gas phase, and not in liquid solution as those described in the previous section, avoiding thus the problems of solubility of CO 2 and (ii) an electrode based on metal particles supported over a conductive carbon support, e.g.…”

Section: Use Of Solar Energy To Drive the Electrocatalyticmentioning

confidence: 99%

Catalysis: Role and Challenges for a Sustainable Energy

2009

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After introducing the role of catalysis as pillar of chemical industry to reach the sustainability of the society, the contribution discusses catalysis for energy as one of the critical areas of development to respond to societal needs and which further demonstrate the link between catalysis, innovation and sustainability. In particular, some aspects of development of catalysts for the photo-and electro-driven conversion of carbon dioxide and water are analyzed. In PEM fuel cells, advanced anode electrocatalysts with improved performances and reduced sensitivity to poisoning by CO could be developed by proper understanding of the role of nanostructure, three phase boundary and metal particle-carbon substrate interaction. It is shown also that similar materials could be used for addressing the societal challenge of converting back CO 2 to fuels. New results on the electrocatalytic conversion of carbon dioxide to liquid fuels (isopropanol, in particular) are reported and it is evidenced how in perspective, by combining these electrodes to a nanostructured titania photoanode, it is possible to realize photoelectrocatalytic devices which have the potential to capture CO 2 and convert it to liquid fuels (long-chain alcohols and hydrocarbons) using solar energy and water in ''artificial energy trees''.

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Reduction of greenhouse gas emissions by catalytic processes

Cited by 61 publications

References 17 publications

Pd catalysts supported onto nanostructured carbon materials for CO2 valorization by electrochemical reduction

Pd catalysts supported onto nanostructured carbon materials for CO2 valorization by electrochemical reduction

A comparison between electrochemical and conventional catalyst promotion: The case of N2O reduction by alkanes or alkenes over K-modified Pd catalysts

Catalysis: Role and Challenges for a Sustainable Energy

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