By taking advantage of different nanoparticle size control methodologies, the precise role of Ni particle size (from 1 nm to 9 nm) was evaluated in the HDO of m-cresol in vapor phase at 573 K under atmospheric pressure. The m-cresol HDO reaction pathways were found to be Ni-particle size dependent. The direct deoxygenation (DDO) rate increased by 10 times when decreasing Ni particle size from 9 nm to 1 nm, while the hydrogenation (HYD) and hydrogenolysis (HYG) rates moderately increased. By applying a geometric model, reaction rates were correlated to the different type of sites. Edges and corner sites (smaller particles) favor aromatics production (DDO route), while face sites (larger particles) favor both HYD and HYG routes. Catalysts partially deactivated due to coke formation, with only slight sintering observed for 1 nm Ni particles. Such findings may serve in the further preparation of active and selective catalysts for bio-oils upgrading into fuel.
Authors
Camila Abreu Teles, Anthony Le Valant, Christine Canaff, Jeremy Dhainaut, Jean-Marc Clacens, Fabio Bellot Noronha, Frédéric Richard, Sebastien Royer, Carmen Ciotonea
- Bibliographic Reference
- Camila Abreu Teles, Anthony Le Valant, Christine Canaff, Jeremy Dhainaut, Jean-Marc Clacens, et al.. Optimization of catalyst activity and stability in the m-cresol hydrodeoxygenation through Ni particle size control. Applied Catalysis B: Environmental, 2023, Applied Catalysis B: Environmental, 338, pp.123030. ⟨10.1016/j.apcatb.2023.123030⟩. ⟨hal-04249836⟩
- DOI
- https://doi.org/10.1016/j.apcatb.2023.123030
- HAL Collection
- ["INSU - Institut National des Sciences de l'Univers", "Université d'Artois", 'CNRS - Centre national de la recherche scientifique', "Université du Littoral Côte d'Opale", 'Université de Poitiers', 'Unité de Catalyse et de Chimie du Solide', 'INSTITUT DE CHIMIE DES MILIEUX ET MATERIAUX DE POITIERS', 'Institut de Chimie du CNRS', 'Université de Lille', 'ANR', 'Unité de Chimie Environnementale et Interactions sur le vivant']
- HAL Identifier
- 4249836
- Institution
- ['Université de Poitiers', "Institut national des sciences de l'Univers", 'Institut de Chimie - CNRS Chimie', "Université du Littoral Côte d'Opale", "Université d'Artois", 'Centrale Lille']
- Laboratory
- ['Institut de Chimie des Milieux et Matériaux de Poitiers', 'Unité de Chimie Environnementale et Interactions sur le Vivant', 'Unité de Catalyse et Chimie du Solide - UMR 8181']
- Published in
- France
Table of Contents
- Université de Poitiers CNRS Institut de Chimie des Milieux et Matériaux de Poitiers UMR 2
- 7285 rue Michel Brunet BP633 86022 Poitiers France. 2
- Université du Littoral Côte dOpale Unité de Chimie Environnementale et Interactions sur le 2
- Vivant-UCEIV UR4492 SFR Condorcet FR CNRS 3417 59140 Dunkerque France. 2
- Université de Lille CNRS Centrale Lille Université Artois UMR 8181-UCCS-Unité de Catalyse 2
- Military Institute of Engineering Chemical Engineering Department Praça Gal. Tiburcio 80 2
- 22290-270 Rio de Janeiro Brazil 2
- National Institute of Technology Catalysis Division Av. Venezuela 82 Rio de Janeiro 20081- 2
- 312 Brazil 2
- Abstract 3
- Keywords 3
- 1. Introduction 4
- 2. Experimental Section 8
- 2.1. 8
- Materials 8
- 2.2. Support Preparation 8
- 2.3. Catalyst Preparation 9
- X X 10
- 2.4. Catalyst Characterization 10
- 2.5. HDO of m-cresol 14
- 𝐗 𝐢𝐧 14
- 𝟏𝟎𝟎 14
- 𝑺 𝐢𝐧 𝐦𝐨𝐥 14
- 𝟏𝟎𝟎 14
- 𝐤 𝐢𝐧 𝐦𝐦𝐨𝐥 𝒈 15
- 𝐤 𝐢𝐧 𝐦𝐦𝐨𝐥 𝒈 𝐡 𝒓 . 𝑺 15
- 3. Results and Discussion 16
- 3.1. Catalyst Characterization 16
- 3.2 Evaluation of the catalysts in the HDO reaction of m-cresol 22
- 3.3 Effect of Ni particle size on surface site concentration and its relationship with catalytic 25
- 𝑠𝑖𝑡𝑒 27
- 𝑘 𝑓𝑠𝑖𝑡𝑒 27
- 𝑠𝑖𝑡𝑒 27
- 𝑠𝑖𝑡𝑒 28
- 𝑠𝑖𝑡𝑒 28
- 3.4 Catalyst stability 29
- 4. Conclusions 32
- Acknowledgements 33
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- Scheme 1. Reaction pathways proposed for the HDO of m-cresol over Ni-based catalysts. 55
