Now showing items 41-50 of 1859
Upgrading of diols by gas-phase dehydrogenation and dehydration reactions on bifunctional Cu-based oxides
(Royal Society of Chemistry, 2014-06)
Biomass-derived short chain polyols can be transformed in valuable oxygenates used as building blocks. The gas phase conversion of a model molecule of 1,3-diols (1,3-butanediol) was studied on bifunctional Cu-Mg, Cu-Al and ...
Kinetic study of the photo-Fenton degradation of formic acid: Combined effects of temperature and iron concentration
This study is focused on the kinetic modelling of the Fenton and photo-Fenton degradation of a model pollutant (formic acid) in aqueous solution, for relatively low iron concentrations (1–9 ppm). The reaction rate expressions ...
Reaction mechanism of hydrogen activation by frustrated Lewis pairs
(KeAi Publishing Communications Ltd., 2019)
Typically, a Lewis acid and a Lewis base can react with each other and form a classical Lewis adduct. The neutralization reaction can however be prevented by ligating the acid and base with bulky substituents and the ...
How reliable is the hard-soft acid-base principle? An assessment from numerical simulations of electron transfer energies
By computing the electron-transfer energies for two million simulated double acid-base exchange reactions, we assess the reliability of the global hard-soft acid-base (HSAB) principle. We find that the HSAB principle is ...
Epoxy-based organogels for thermally reversible light scattering films and form-stable phase change materials
(American Chemical Society, 2017-03-10)
Alkyl chains of β-hydroxyesters synthesized by the capping of terminal epoxy groups of diglycidylether of bisphenol A (DGEBA) with palmitic (C16), stearic (C18), or behenic (C22) fatty acids self-assemble forming a crystalline ...
Development of an enzymeless electroanalytical method for the indirect detection of creatinine in urine samples
(ELSEVIER SCIENCE SALAUSANNE, 2012)
The aim of this study is to develop a new enzymeless electroanalytical method for the indirect quantification of creatinine from urine sample. This method is based on the electrochemical monitoring of picrate anion reduction ...
Trifluoromethanesulfonic acid supported on carbon used as catalysts in the synthesis of flavones and chromones
(Elsevier Science, 2009-01)
Solid acid catalysts based on trifluoromethanesulfonic acid (TFMS) were synthesized using two different activated carbons as supports. They were characterized by FT-IR, DTA-TGA and BET, and their acidity was measured by ...
Microwave-assisted digestion procedures for biological samples with diluted nitric acid: Identification of reaction products
(ELSEVIER SCIENCE BV, 2009)
Microwave-assisted sample preparation using diluted nitric acid solutions is an alternative procedure for digesting organic samples. The efficiency of this procedure depends on the chemical properties of the samples and ...
Dualistic Nature of the Mechanism of the Morita-Baylis-Hillman Reaction Probed by Electrospray Ionization Mass Spectrometry
(Amer Chemical SocWashingtonEUA, 2009)
EFFECTS OF HUMIC AND OXALIC ACID IN WOOD BIODEGRADATION BY Gloeophyllum trabeum
(Sociedad Chilena de Química, 2010)