Solids containing Si-OP bonds: is the hydrolytic sol-gel route a suitable synthesis strategy?

C Imparato, A Bifulco, G Malucelli, A Aronne - Journal of Sol-Gel Science …, 2023 - Springer
Materials based on silicon-phosphorus mixed oxides have traditionally attracted interest in
electronics, optics, catalysis, and related fields. The preparation of a solid containing stable …

The role of metallic and acid sites of Ru-Nb-Si catalysts in the transformation of levulinic acid to γ-valerolactone

S Esposito, B Silvestri, C Rossano, V Vermile… - Applied Catalysis B …, 2022 - Elsevier
The transformation of γ-valerolactone (GVL) into levulinic acid (LA) requires the use of
bifunctional catalysts allowing the hydrogenation and lactonization steps to occur. The aim …

On demand production of ethers or alcohols from furfural and HMF by selecting the composition of a Zr/Si catalyst

F Zaccheria, F Bossola, N Scotti… - Catalysis Science & …, 2020 - pubs.rsc.org
Zr/Si mixed oxides with different amounts of silica (0–50 wt%) were prepared by a simple sol–
gel method. These catalysts were tested in a cascade reaction of furfural and 5 …

Surface acid properties of Nb2O5–P2O5–SiO2 gel-derived catalysts

G Garbarino, G Pampararo, E Finocchio… - Microporous and …, 2022 - Elsevier
Amorphous catalytic materials belonging to the Nb 2 O 5–P 2 O 5–SiO 2 system were
prepared through an original sustainable sol-gel procedure, and characterized by surface …

An effective cascade strategy over a Sn-enriched phosphate material: Upcycling a reductive adsorbent into an environmental catalyst

T Avola, S Campisi, M Scavini, F Bossola… - Applied Surface …, 2024 - Elsevier
A calcium phosphate-based material enriched with Sn (8.3 at.%, as revealed by X-ray
photoelectron spectroscopy) was successfully used in the reductive adsorption of Cr (VI) to …

Fabrication of porous polymer membrane from polysulfone grafted with acid ionic liquid and the catalytic property for inulin hydrolysis

H Jiang, T Wang, S Li, ZP Zhao - Journal of Membrane Science, 2021 - Elsevier
Catalytically active membranes are the core components of the membrane reactors.
Polysulfone (PSF) grafted with ionic liquids (ILs), PSF-DG-ILs, was prepared via introducing …

[HTML][HTML] Insight into titanium and zirconium phosphate-based materials for reactive surfaces

C Imparato, E Finocchio, S Campisi, M Bigica… - Materials Today …, 2024 - Elsevier
Transition metal phosphates are promising acid catalysts for biorefinery processes, and their
efficiency can benefit from the dispersion in a porous support. Here, a one-pot hydrolytic sol …

Chloride-free hydrolytic sol–gel synthesis of Nb–P–Si oxides: an approach to solid acid materials

NJ Clayden, C Imparato, R Avolio, G Ferraro… - Green …, 2020 - pubs.rsc.org
Solid acids are the green alternative for heterogeneous acid catalysis, in particular for
industrial processes exploiting biomass. Niobium–phosphorus oxides are valid candidates …

Influence of the Nb/P ratio of acidic NbPSi oxides on surface and catalytic properties

A Gervasini, S Campisi, P Carniti, M Fantauzzi… - Applied Catalysis A …, 2019 - Elsevier
In this work, two acidic Nbsingle bondPsingle bondSi mixed oxide gel-derived materials
characterized by Nb/P molar ratios equal to 2 (5Nb2. 5P) and 1 (2.5 NbP) were investigated …

Furfural hydrogenation on modified niobia

A Jouve, S Cattaneo, D Delgado, N Scotti… - Applied Sciences, 2019 - mdpi.com
In this study, niobia-based materials have been used as supports for Pt nanoparticles and
used in the hydrogenation of furfural. The incorporation of dopants (W6+ and Ti4+) in the …