A5055205282- Catalytic Processes in Materials Science
- Catalysis and Hydrodesulfurization Studies
- Catalysis and Oxidation Reactions
- Catalysis for Biomass Conversion
- Catalysts for Methane Reforming
- Biodiesel Production and Applications
- Copper-based nanomaterials and applications
- Mesoporous Materials and Catalysis
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Biofuel production and bioconversion
- Fuel Cells and Related Materials
UCLouvain
2023-2024
University of Genoa
2018-2023
Amorphous aluminosilicates are known for their excellent performance in (bio)ethanol dehydration ethylene production. Several studies showed that the homogeneous dispersion of Al amorphous is key to obtain active and stable catalysts. However, ensuring a high aluminosilicate matrix remains complicated task. Here, aerosol assisted sol-gel (AASG) process presented as facile one-step continuous production method towards highly aluminosilicates. We systematically examine effect aluminum loading...
In gas/solid conditions, different chemicals, such as diethylether, ethylene, butadiene, higher hydrocarbons, acetaldehyde, acetone and hydrogen, can be produced from ethanol with heterogeneous catalytic processes. The focus of this paper is the interplay reaction paths, which depend on thermodynamic factors well kinetic factors, thus mainly catalyst functionalities temperatures. Strategies for selectivity improvements in heterogeneously catalyzed processes converting (bio)ethanol into...
Fatty acid methyl esters (FAME) were produced by transesterification of vegetable oil triglycerides, using a cheap, available, and strongly basic catalyst: NaAlO2 (sodium aluminate). Characterization revealed that displays high amount strong sites, explaining its record activity compared with other common benchmark catalysts (calcined hydrotalcite, supported KI, Ca Sr oxides). Importantly, operates truly as heterogeneous catalyst does not leach in the reaction medium. It shows good...
Deactivation in ethanol dehydrogenation with Cu-SiO 2 catalysts can be supressed by injecting just a small O dope the feed, to prevent accumulation of thermally stable non-oxygenated carbonaceous deposit that plugs pores catalyst.
Abstract Pure TiO 2 , N- and Cu-doped double-doped (Cu, N) samples were synthesized via sol–gel route in order to investigate the local average structure of crystalline under different pH conditions. Samples are mainly constituted anatase phase, even though low but significant amounts secondary brookite grew most samples. A detailed structural characterization was performed by means synchrotron X-ray elastic scattering experiments; data obtained Rietveld refinement, whereas insights about...
Abstract Background Acetaldehyde is a main organic intermediate for manifold chemical products. In the near future, its production using renewable raw materials rapidly becoming highly desirable. this paper, investigations on pure and silica‐supported molybdenum oxide (MoO 3 ) as catalysts ethanol oxidative dehydrogenation process to acetaldehyde are reported. Results Acicular α‐MoO crystals silica‐gel supported MoO (1, 5 12% wt MoO3 /wt support were prepared by thermal decomposition method...
Abstract BACKGROUND γ‐Al 2 O 3 and silica‐doped aluminas are largely used supports for industrial catalysts. The addition of silica to alumina modifies its acid–base properties, also affecting dispersion ability supported species. In this paper, investigations on the doping effect in alumina‐supported MoO catalysts, developed oxidative dehydrogenation process ethanol acetaldehyde, reported. RESULTS (1÷12% wt MoO3 /wt support ) over pure , SiO (1 5 wt.%) doped were prepared by incipient...
Fatty acid methyl esters (FAME) were produced with high efficiency by a cheap, available, and strongly basic catalyst: NaAlO2 (SA). A deep characterization revealed that both density strength played crucial role in the transesterification reaction. Its catalytic performances compared other classical catalysts, same operative conditions outline is SA outcompetes all benchmarks terms of specific activity final FAME yield. also truly heterogeneous (does not leach).
Copper based catalysts are central for carrying dehydrogenation reactions. However, these materials prone to deactivation by sintering and coke deposition. Irreversible occurring during reaction (under the effect of temperature) is known decrease both activity selectivity, where unwanted dehydration support might also play an important role. From this perspective, quite unreactive silica supports may be attractive. using classical catalyst preparation methods (e.g. impregnation), it a...
Amorphous catalytic materials belonging to the Nb2O5-P2O5-SiO2 system were prepared through an original sustainable sol-gel procedure, and characterized by surface area, porosity acidity measurements, investigated FTIR spectroscopy of adsorbed pyridine, ammonia titration TPR, as well with 2-phenylethylamine from organic solution. They present Lewis attributed niobium cationic centers, Brønsted sufficiently strong protonate pyridine. The total depends on content. conversion ethanol was vapor...