9 Papers
347 Citations
A. Tuel is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Inverse gas chromatography & Adsorption. The author has an hindex of 7, co-authored 9 publications.
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Papers
Hydroxyls of silica powders
A. P. Legrand,H. Hommel,A. Tuel,Alain Vidal,Henri Balard,Eugène Papirer,Pierre Levitz,M. Czernichowski,R. Erre,H. Van Damme,Jean-Paul Gallas,J.F. Hemidy,Jean-Claude Lavalley,Odile Barres,A. Burneau,Y. Grillet +15 more
TL;DR: In this article, a comparative study of pyrohydrolyse, pyrophyrosymbolic synthesis, and thermogravimetrie is presented, with the aim of providing a description of the properties of these materials.
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A silicon-29 NMR study of the silanol population at the surface of derivatized silica
TL;DR: The type of silicon atoms at the surface of silicon dioxide samples, modified by dense grafts of three triorganyl-siloxy substituents, was studied by 29 Si NMR Signals were enhanced by magic angle spinning (MAS), cross polarization by the surface proton population (CP), broadband decoupling of the protons, and signal averaging as mentioned in this paper.
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Solid State NMR Studies of Precipitated and Pyrogenic Silicas
TL;DR: In this article, a detailed study of 29 Si NMR of different silicas and the quantitative relationships that can be derived from the 29 Si spectra are discussed, with special emphasis placed on the difference of chemical shift observed between CP/MAS and simple MAS spectra.
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Study of modified silicas by inverse gas chromatography part II: Influence of chain length on surface properties of silicas grafted withα−ω diols
TL;DR: In this paper, the surface properties of silicas modified with α−ω diols having between 4 and 16 carbon atoms were investigated by inverse gas chromatography and it was shown that the value of the dispersive component of the surface energy does not change monotonously: a minimum value is recorded when the surface is covered by a monolayer of methylene groups.
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Study of modified silicas by inverse gas chromatography. Part I: Influence of chain length on grafting ratio
TL;DR: In this paper, the grafting ratios were evaluated by elemental analysis of carbon or by the weight loss of the grafted silica heated to 700°C and it was shown that in the case of α-ω diols, the density of the grafts was 25% higher than for n-alcohols.
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