Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Françoise Quignard"'
Autor:
Atif Emre Demet, Olinda Gimello, Rossella Arletti, Nathalie Tanchoux, Moulay Tahar Sougrati, Lorenzo Stievano, Françoise Quignard, Gabriele Centi, Siglinda Perathoner, Francesco Di Renzo
Publikováno v:
Catalysts, Vol 12, Iss 8, p 814 (2022)
Noble metal-free catalysts based on earth-abundant and inexpensive mixed oxides are active catalysts of all steps of the reaction cascade leading from 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) using tert-butyl hydroperoxide (
Externí odkaz:
https://doaj.org/article/3738d87a960c473cb9fad7990cda7435
Autor:
Françoise Quignard, Nathalie Tanchoux
Publikováno v:
Gels, Vol 6, Iss 3, p 19 (2020)
Aerogels can be defined as ultralight materials with a 3D porous structure, similar to their parent wet gels, where the solvent has been replaced by a gas without a collapse of the gel structure, thanks to the drying process used (supercritical CO2 d
Externí odkaz:
https://doaj.org/article/493fa507d4ee42e78bf877dcc221cdb0
Autor:
Marleen Häring, Maria M. Pérez-Madrigal, Dennis Kühbeck, Asja Pettignano, Françoise Quignard, David Díaz Díaz
Publikováno v:
Molecules, Vol 20, Iss 3, Pp 4136-4147 (2015)
In this manuscript we report a critical evaluation of the ability of natural DNA to mediate the nitroaldol (Henry) reaction at physiological temperature in pure water. Under these conditions, no background reaction took place (i.e., control experimen
Externí odkaz:
https://doaj.org/article/3b0298e085164fc783953449e012ae24
Publikováno v:
BioResources, Vol 7, Iss 2, Pp 2418-2430 (2012)
The dimensional variations of green wood samples induced by organic solvents have been studied. The solvents used (ethanol, isopropanol, acetone, and acetonitrile) covered a wide range of polarity and were studied pure and in aqueous solutions over a
Externí odkaz:
https://doaj.org/article/554bab0a83ce4f599fbdbbae26d37507
Publikováno v:
Molecules, Vol 15, Iss 5, Pp 3643-3660 (2010)
The impact of immobilization of oxazaborolidines supported on silica via different substituents on the boron and nitrogen atoms is evaluated in the enantioselective reduction of acetophenone. The performances of the homogeneous analog oxazaborolidine
Externí odkaz:
https://doaj.org/article/e406682eff844a7982d328e833ae0ca2
Publikováno v:
Polymers, Vol 8, Iss 9, p 340 (2016)
Ethanol organosolv alfa grass lignins were extracted in the presence of sulfuric acid or Lewis acids (Sc(OTf)3, FeCl3) as catalysts and subjected to a comprehensive structural characterization by solid state 13C NMR, GPC, MALDI-TOF, and ASAP-MS/MS. T
Externí odkaz:
https://doaj.org/article/69d97b4190f64f919668503204403b00
Publikováno v:
Molecules, Vol 21, Iss 9, p 1122 (2016)
Here we describe a preliminary investigation on the ability of natural keratin to catalyze the nitroaldol (Henry) reaction between aldehydes and nitroalkanes. Both aromatic and heteroaromatic aldehydes bearing strong or moderate electron-withdrawing
Externí odkaz:
https://doaj.org/article/ef95d9e4da6d489b833f5f68f4a82d88
Autor:
Amal Djelad, Amine Morsli, Mike Robitzer, Abdelkader Bengueddach, Francesco di Renzo, Françoise Quignard
Publikováno v:
Molecules, Vol 21, Iss 1, p 109 (2016)
Chitosan-zeolite Na-X composite beads with open porosity and different zeolite contents were prepared by an encapsulation method. Preparation conditions had to be optimised in order to stabilize the zeolite network during the polysaccharide gelling p
Externí odkaz:
https://doaj.org/article/b626098ade304e949f541d9bfd09c842
Autor:
Mike Robitzer, Françoise Quignard
Publikováno v:
CHIMIA, Vol 65, Iss 1-2 (2011)
Natural polysaccharides are supports for sensors, absorbents and catalysts. They are also gelling agents in the aqueous phase, due to the high level of dispersion of hydrocolloids. This article focuses on an effective method to prepare dry materials
Externí odkaz:
https://doaj.org/article/1b6a810ec885485685675eac5e329a3e
Autor:
Melvyn Gorra, Frantz Ndebulia Watchou, Maria A. Palacios, Jérôme Long, Saad Sene, Gautier Félix, Nathalie Tanchoux, Françoise Quignard, Joulia Larionova, Yannick Guari
Publikováno v:
New Journal of Chemistry. 47:3207-3214
We report the design of new composite films {Fe[Fe(CN)5(NO)]}0.55@C6H11NO4 and {Ag2[Fe(CN)5(NO)]}0.28@ C6H11NO4 based on cyano-bridged coordination polymers FeII[FeII(CN)5(NO)] or Ag2 I[FeII(CN)5(NO)] grown into a chitosan matrix that are able to pro