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Catalysis and Reaction Engineering Commons™
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Articles 1 - 5 of 5
Full-Text Articles in Catalysis and Reaction Engineering
Functional Carbons And Carbon Nanohybrids For The Catalytic Conversion Of Biomass To Renewable Chemicals In The Condensed Phase, John Matthiesen, Thomas Hoff, Chi Liu, Charles Pueschel, Radhika Rao, Jean-Philippe Tessonnier
Functional Carbons And Carbon Nanohybrids For The Catalytic Conversion Of Biomass To Renewable Chemicals In The Condensed Phase, John Matthiesen, Thomas Hoff, Chi Liu, Charles Pueschel, Radhika Rao, Jean-Philippe Tessonnier
Jean-Philippe Tessonnier
The production of chemicals from lignocellulosic biomass provides opportunities to synthesize chemicals with new functionalities and grow a more sustainable chemical industry. However, new challenges emerge as research transitions from petrochemistry to biorenewable chemistry. Compared to petrochemisty, the selective conversion of biomass-derived carbohydrates requires most catalytic reactions to take place at low temperatures (< 300 °C) and in the condensed phase to prevent reactants and products from degrading. The stability of heterogeneous catalysts in liquid water above the normal boiling point represents one of the major challenges to overcome. Herein, we review some of the latest advances in the field with an emphasis on the role of carbon materials and carbon nanohybrids in addressing this challenge.
Chemically Modified Multi-Walled Carbon Nanotubes (Mwcnts) With Anchored Acidic Groups, Nuruzatulifah Bt Asari Mansor, Jean-Philippe Tessonnier, Ali Rinaldi, Sylvia Reiche, M. G. Kutty
Chemically Modified Multi-Walled Carbon Nanotubes (Mwcnts) With Anchored Acidic Groups, Nuruzatulifah Bt Asari Mansor, Jean-Philippe Tessonnier, Ali Rinaldi, Sylvia Reiche, M. G. Kutty
Jean-Philippe Tessonnier
Surface functionalization of multi-walled carbon nanotubes (MWCNTs) was carried out using a gas phase treatment in a Universal Temperature Program (UTP) reactor by flowing SO 3 gas onto the CNTs while being heated at different temperatures. The functionalized nanotubes were characterized using X-ray Fluorescence (XRF), Fourier Transform Infrared Spectroscopy (FT-IR) and Raman spectroscopy. The amount of oxyen and sulfur containing groups was determined by acid-base titration. The titration results were in good agreement with elemental analysis using X-ray fluorescence. FTIR analysis showed the presence of oxygen and sulfur containing groups, S=O, C-S, C=O and-COOH. Raman spectroscopy confirmed that oxygen and …
Amino-Functionalized Carbon Nanotubes As Solid Basic Catalysts For The Transesterification Of Triglycerides, Alberto Villa, Jean-Philippe Tessonnier, Olivier Majoulet, Dang Shen Su, Robert Schlogl
Amino-Functionalized Carbon Nanotubes As Solid Basic Catalysts For The Transesterification Of Triglycerides, Alberto Villa, Jean-Philippe Tessonnier, Olivier Majoulet, Dang Shen Su, Robert Schlogl
Jean-Philippe Tessonnier
Multiwalled carbon nanotubes grafted with various amino groups show high activity and stability when used as basic catalysts for the transesterification of triglycerides.
Design Of Mfi Zeolite-Based Composites With Hierarchical Pore Structure: A New Generation Of Structured Catalysts, F. Ocampo, H. S. Yun, M. Maciel Pereira, Jean-Philippe Tessonnier, B. Louis
Design Of Mfi Zeolite-Based Composites With Hierarchical Pore Structure: A New Generation Of Structured Catalysts, F. Ocampo, H. S. Yun, M. Maciel Pereira, Jean-Philippe Tessonnier, B. Louis
Jean-Philippe Tessonnier
Zeolite/glass composite materials with hierarchical trimodal pore size distributions have been successfully prepared and subsequently characterized. Starting from glass monoliths having meso- and macropores, additional microporosity was introduced while allowing the growth of zeolite crystals via partial recrystallization of the glass support into ZSM-5 zeolite phase. Structured zeolitic catalytic materials were produced using a combination of supramolecular templating methods to produce the glass support, followed by conventional self-assembly of template cations and silica species. Zeolite crystals are therefore in intimate contact with the glass support, featuring micropores in addition to the mesopores. Hence, these zeolite/glass composites exhibit enhanced diffusional properties …
Beta Zeolite Supported On Silicon Carbide For Friedel–Crafts Fixed-Bed Reactions, Gauthier Wine, Joseph Matta, Jean-Philippe Tessonnier, Cuong Pham-Huu, Marc-Jacques Ledoux
Beta Zeolite Supported On Silicon Carbide For Friedel–Crafts Fixed-Bed Reactions, Gauthier Wine, Joseph Matta, Jean-Philippe Tessonnier, Cuong Pham-Huu, Marc-Jacques Ledoux
Jean-Philippe Tessonnier
Beta zeolite supported on silicon carbide, with high thermal conductivity and high mechanical strength, was successfully used as an active and stable catalyst for Friedel-Crafts reactions in a fixed bed configuration.