Search

Your search keyword '"Granger, Pascal"' showing total 333 results
Start Over Author "Granger, Pascal"
333 results on '"Granger, Pascal"'

56. Rh/CexZr1−xO2 as NGV Catalyst: Impact of the Preparation of Ceria-Zirconia Support on the Catalytic Performance.

Author

Decoster, Amaury, Zheng, Yuanshuang, Dhainaut, Fabien, and Granger, Pascal

Subjects
CATALYSTS, THERMAL resistance, STEAM reforming, METHANE
Abstract

Methane oxidation has been studied on Rh/CexZr1−xO2. Catalytic performances were found highly sensitive to the preparation method of CexZr1−xO2 support. Coprecipitation method leads to the highest conversion and the lowest activation barrier suggesting improved metal-support interaction. In contrast, weak resistance to thermal aging is observed. Finally aged coprecipitated Rh/CexZr1−xO2 mimics the kinetic behavior of catalysts prepared by crystal templating method. Kinetic measurements performed on this latter catalyst show that a single site reaction mechanism is more appropriate compared to dual site mechanism which agrees with the assumption that deactivation of coprecipitated samples would be related to the suppression of the metal-support interface. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

59. Recent Progress and Prospects in Catalytic Water Treatment

Author

Ministry of Research, Innovation and Digitization (Romania), Parvulescu, Vasile I., Epron, Florence, García Gómez, Hermenegildo, Granger, Pascal, Ministry of Research, Innovation and Digitization (Romania), Parvulescu, Vasile I., Epron, Florence, García Gómez, Hermenegildo, and Granger, Pascal

Abstract

Presently, conventional technologies in water treatment are not efficient enough to completely mineralize refractory water contaminants. In this context, the implementation of catalytic processes could be an alternative. Despite the advantages provided in terms of kinetics of transformation, selectivity, and energy saving, numerous attempts have not yet led to implementation at an industrial scale. This review examines investigations at different scales for which controversies and limitations must be solved to bridge the gap between fundamentals and practical developments. Particular attention has been paid to the development of solar-driven catalytic technologies and some other emerging processes, such as microwave assisted catalysis, plasma-catalytic processes, or biocatalytic remediation, taking into account their specific advantages and the drawbacks. Challenges for which a better understanding related to the complexity of the systems and the coexistence of various solid-liquid-gas interfaces have been identified.

Published
2022

60. Present and future challenges in postcombustion catalysis : An academic viewpoint

Author

Granger, Pascal, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), and Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM.CATA]Chemical Sciences/Catalysis, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2021

61. List of Contributors

Author

Albero, Josep, primary, Amoros, Pedro, additional, Ayvali, Tuğçe, additional, Ba, Housseinou, additional, Berhault, Gilles, additional, Centeno, M.A., additional, Coman, Simona, additional, De Vos, Dirk, additional, Domínguez, M.I., additional, Duong-Viet, Cuong, additional, García, Hermenegildo, additional, Granger, Pascal, additional, Kemnitz, Erhard, additional, Laguna, O.H., additional, Lennon, David, additional, Liu, Yuefeng, additional, Nhut, Jean-Mario, additional, Odriozola, J.A., additional, Parvulescu, Vasile I., additional, Pham-Huu, Cuong, additional, Philippot, Karine, additional, Richards, Ryan M., additional, Shulda, Sarah, additional, Tessonnier, Jean-Philippe, additional, Truong-Phuoc, Lai, additional, Valvekens, Pieterjan, additional, and Winfield, John M., additional

Published
2016
Full Text
View/download PDF

63. Revisiting the Impact of Tungsten on the Catalytic Properties of Ammonia-SCR V 2 O 5 -WO 3 /TiO 2 Catalysts: Geometric vs. Electronic Effects.

Author

Siaka, Hermann Wilfried, Dujardin, Christophe, Moissette, Alain, and Granger, Pascal

Subjects
POLAR effects (Chemistry), TUNGSTEN, CATALYSTS, CATALYSIS, CATALYTIC reduction
Abstract

The SCR performance of V2O5-WO3/TiO2 SCR-catalysts characterized by different surface W density (2.1W/nm2 and 9.5W/nm2) and different surface V density varying in the range 1–8V/nm2 has been investigated in order to clarify existing controversies on the preferential involvement of electronic and geometric effects in the catalytic properties. It was found that tungsten has a weak effect on the VOx cluster size distribution through contraction of dilution effect. In contrast, the optimal interaction between W and V, when both reach their highest composition, appears to be a relevant parameter that can enhance their acidic properties and improve the catalytic efficiency in dry conditions. On the other hand, an absence of significant interaction leads to discontinuity due to deactivation. In the presence of steam, acidic properties are averaged, lowering the impact of the V to W ratio. Finally, the critical importance of acidic properties which outperform redox properties in the definition of active site is pointed out in the light of this study. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

69. Valmet Chiral Schiff‐Base Ligands And Their Copper(II) Complexes as Organo, Homogeneous and Heterogeneous Catalysts for Henry, Cyanosilylation and Aldol Coupling Reactions

Author

Arora, Zinnia, primary, Eftemie, Diana‐Ioana, additional, Spinciu, Adela, additional, Maxim, Cătălin, additional, Hanganu, Ana‐Maria, additional, Tudorache, Madalina, additional, Cojocaru, Bogdan, additional, Pavel, Octavian D., additional, Granger, Pascal, additional, Andruh, Marius, additional, and Pârvulescu, Vasile I., additional

Published
2021
Full Text
View/download PDF

71. Improved thermal resistance to deactivation of Ce1-XREXV0.95W0.05O4 mixed oxides for Diesel exhaust emissions control

Author

Peyrovi, P, Granger, Pascal, Dujardin, Christophe, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille

Subjects
[CHIM.CATA]Chemical Sciences/Catalysis, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2020

72. Evaluation of three-way monolithic catalyst performances in realistic transient conditions

Author

Nandi, Shreya, Arango Ponton, Paola-Beatriz, Chaillou, Christophe, Dujardin, Christophe, Granger, Pascal, Laigle, Emmanuel, Nicolle, André, Norsic, Caroline, Richard, Mélissandre, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189 (CRIStAL), Université de Lille-Centrale Lille-Centre National de la Recherche Scientifique (CNRS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and IFP Energies nouvelles (IFPEN)

Subjects
[CHIM.CATA]Chemical Sciences/Catalysis, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2020

77. Preface

Author

Granger, Pascal, primary and Pârvulescu, Vasile, additional

Published
2007
Full Text
View/download PDF

78. Optimization of the composition of perovskite type materials for further elaboration of four-way catalysts for gasoline engine

Author

Wu, J., Dacquin, J, Cordier, C., Dujardin, C., Granger, Pascal, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Unité Matériaux et Transformations - UMR 8207 (UMET), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Supérieure de Chimie de Lille (ENSCL), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, and Institut de Chimie du CNRS (INC)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)

Subjects
PGM-free TWC, propene oxidation, [CHIM]Chemical Sciences, [CHIM.CATA]Chemical Sciences/Catalysis, [CHIM.MATE]Chemical Sciences/Material chemistry, La-deficient perovskite 2, Perovskite, CO oxidation
Abstract

International audience; This study compares the impact of A and B-substitution in parent stoichiometric and La-deficient LaFeO 3 perovskite for subsequent development as suitable substrate in Three-Way Catalysis. CO and propene oxidation were investigated to probe their oxidative behavior. It was found that the activity cannot be related neither to the specific surface area nor to the nature of oxidic iron species but more likely to intra and extra lattice of copper species as well as related defective sites.; Cette étude compare l'impact de substituants en position A et B dans un matériau parent de structure type perovskite LaFeO3 déficitaire en lanthane pour le développement de catalyseurs trois-voies. L'oxydation de CO et du propène ont été étudiées pour caractériser leurs propriétés oxydantes. Il a été démontré que leur activité ne peut pas être reliée ni à leur surface spécifiques ni à la nature des espèces fer oxydées mais plus vraisemblablement à la présence de cuivre stabilisé dans le réseau de la perovskite ou sous forme ségréguée à la surface et à la présence de défauts de structure.

Published
2018

79. Keynote lecture

Author

Granger, Pascal, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), and Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM.CATA]Chemical Sciences/Catalysis, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

81. Second Youth of a Metal-Free Dehydrogenation Catalyst: When γ-Al2O3 Meets Coke Under Oxygen- and Steam-Free Conditions

Author

Ba, Housseinou, primary, Tuci, Giulia, additional, Evangelisti, Claudio, additional, Ceppatelli, Matteo, additional, Nguyen-Dinh, Lam, additional, Dal Santo, Vladimiro, additional, Bossola, Filippo, additional, Nhut, Jean-Mario, additional, Rossin, Andrea, additional, Granger, Pascal, additional, Giambastiani, Giuliano, additional, and Pham-Huu, Cuong, additional

Published
2019
Full Text
View/download PDF

87. Catalysis: From academic research to industrial applications

Author

Niedercorn, Francine, Granger, Pascal, Agbossou-Niedercorn, Francine, Ledoux, Marc, Centre National de la Recherche Scientifique (CNRS), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille

Subjects
Engineering, Chemistry(all), 010405 organic chemistry, business.industry, General Chemical Engineering, Library science, General Chemistry, 010402 general chemistry, 01 natural sciences, 0104 chemical sciences, Chemical engineering, Chemical Engineering(all), [CHIM]Chemical Sciences, business, ComputingMilieux_MISCELLANEOUS
Abstract

Comptes Rendus Chimie - In Press.Proof corrected by the author Available online since dimanche 18 septembre 2016

Published
2016
Full Text
View/download PDF

88. Cover Picture: The Pivotal Role of Catalysis in France: Selected Examples of Recent Advances and Future Prospects. (ChemCatChem 12/2017)

Author

Olivier-Bourbigou, Hélène, primary, Chizallet, Céline, additional, Dumeignil, Franck, additional, Fongarland, Pascal, additional, Geantet, Christophe, additional, Granger, Pascal, additional, Launay, Franck, additional, Löfberg, Axel, additional, Massiani, Pascale, additional, Maugé, Françoise, additional, Ouali, Armelle, additional, Roger, Anne-Cécile, additional, Schuurman, Yves, additional, Tanchoux, Nathalie, additional, Uzio, Denis, additional, Jérôme, François, additional, Duprez, Daniel, additional, and Pinel, Catherine, additional

Published
2017
Full Text
View/download PDF

89. The Pivotal Role of Catalysis in France: Selected Examples of Recent Advances and Future Prospects.

Author

Olivier‐Bourbigou, Hélène, primary, Chizallet, Céline, additional, Dumeignil, Franck, additional, Fongarland, Pascal, additional, Geantet, Christophe, additional, Granger, Pascal, additional, Launay, Franck, additional, Löfberg, Axel, additional, Massiani, Pascale, additional, Maugé, Françoise, additional, Ouali, Armelle, additional, Roger, Anne‐Cécile, additional, Schuurman, Yves, additional, Tanchoux, Nathalie, additional, Uzio, Denis, additional, Jérôme, François, additional, Duprez, Daniel, additional, and Pinel, Catherine, additional

Published
2017
Full Text
View/download PDF

91. What News in the Surface Chemistry of Bulk and Supported Vanadia Based SCR‐Catalysts: Improvements in their Resistance to Poisoning and Thermal Sintering.

Author

Granger, Pascal, Siaka, Hermann W., and Umbarkar, Shubhangi B.

Subjects
*DIESEL motor exhaust gas, *SURFACE chemistry, *DIESEL particulate filters, *THERMAL resistance, *VANADIUM compounds, *DIESEL motor combustion
Abstract

This paper reports a short review on the impact of poisoning effects and thermal aging on the reactivity of surface vanadate species on benchmark V2O5−WO3/TiO2 Selective‐Catalytic‐Reduction catalysts. A renewed interest of this SCR technology is related to its diversification notably as after‐treatment systems to treat the exhaust from Diesel engines with higher running temperature especially when SCR catalysts are coated on Diesel Particulates Filters. Particular attention is also paid to poisoning effects in conjunction with the progressive replacement of fossil fuels by bio‐fuels containing alkaline contaminants which drastically deactivate the catalyst through neutralization of strong acid sites. Most of the investigations show that better insight into the mechanisms of poisoning and aging processes is needed especially to understand the relative sensibility of various vanadate species. This could provide original guidelines to catalyst preparation and or the developments of more stable bulk systems as exemplified. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

92. Catalyseur 'sans-métaux' Biosourcé à Base de Carbone Dopé à l'Azote pour des Applications en Energie et en Dépollution

Author

Pham-Huu, Cuong, Ba, Housseinou, Liu, Yuefeng, Truong-Phuoc, Lai, Duong-Viet, Cuong, Nhut, Jean-Mario, Mu, Xiaoke, Nguyen-Dinh, Lam, Granger, Pascal, Tuci, Giulia, and Giambastiani, Giuliano

Subjects
carbon nanomaterials, hetero-doping, direct dehydrogenation reaction, oxygen reduction reaction
Abstract

We describe the effective synthesis of macroscopic and highly porous nitrogen-doped carbon-based composites with exceptionally high nitrogen content. An aqueous solution of food-processing raw materials, i.e. ammonium carbonate, glucose and citric acid, is used as an impregnating pre-catalytic phase where a variety of macroscopically shaped supports are soaked. Successive thermal treatments "dress" the supports with a foamy carbon layer featured by a high density of surface exposed N-sites. The as-prepared composites are employed as heterogeneous metal-free catalysts in gas- and liquid-phase processes, showing excellent catalytic performance compared to that of analogous classical metal/metal-oxide-based composites. Two industrially and technologically relevant catalytic transformations are scrutinized: 1) the electrochemical oxygen reduction reaction (ORR) as a process at the heart of renewable energy technology, and 2) the partial H2S oxidation to elemental sulfur from refinery tail gas.

Published
2015

94. Piezoelectrics and Multifunctional Composites

Author

Granger, Pascal, Parvulescu, Vasile I, Prellier, Wilfrid, Ramadurai, Ranjit, Kannan, V, Granger, Pascal, Parvulescu, Vasile I, Prellier, Wilfrid, Ramadurai, Ranjit, and Kannan, V

Abstract

Piezoelectric cum ferroelectric (FE) oxides constitute a major proportion of the smart functional materials such as actuators, sensors, transducers, filters, resonators, and microelectromechanical systems (MEMS). Among the wide range of materials, the perovskite structures (ABO3) with ferroelectric properties, such as lead zirconate titanate (Pb(Zr, Ti)O3, PZT), barium titanate (BaTiO3), bismuth ferrite (BiFeO3), sodium bismuth titanate ((Bi1/2Na1/2)TiO3), and their solid solutions, are known to exhibit remarkable piezoelectric properties. However, to realize a wider range of applications and to tailor the physical properties, composites with piezoelectrics as one or more of the functional components were synthesized and tested. Polymer–ceramic hybrid composites offer unique properties to meet today's applications. In addition, multifunctional composites that involve magnetic and ferroelectric functionalities are studied extensively for the rich science involved in understanding the physical properties and a plausible range of applications. A combination of piezoelectric with strong piezomagnetic/magnetostrictive materials to form new multiferroic composites has been studied extensively. In this chapter, the need for lead-free piezoelectrics and polymer–ceramic hybrid composites is discussed. Preliminary studies on multifunctional composites with piezoelectric as one of the phases are discussed. The fundamental understanding of coupling between the phases in both polymer–ceramic and multifunctional composites remains ambiguous and offers a potential scope for further studies and novel applications.

Published
2016

Catalog

Books, media, physical & digital resources
See catalog results