Results 121 to 130 of about 6,415 (208)
pH Determination in Grape Must by Benchtop NMR Spectroscopy
ChemFoodChem, EarlyView.Benchtop NMR spectroscopy enables electrode‐free pH determination in grape must. By modeling tartaric acid's chemical shift variation, pH is derived directly from NMR spectra alongside standard composition parameters. Validated against 100 samples, this integrated approach tracks pH changes during acidification, deacidification, and fermentation ...
Billy Salgado +9 more
wiley +1 more source
Mild C─F Activation of Azido(per)Fluoroalkanes
Chemistry – A European Journal, EarlyView.Mild and selective activation of C(sp3)–F bonds in azido(per)fluoroalkanes using thiolates was developed, leading to novel functionalized azides. The reaction is initiated by nucleophilic attack of the sulfur atom to the terminal nitrogen of the azido group, followed by fluoride ion elimination.
Olena Shaitanova +7 more
wiley +1 more source
Taikomieji tyrimai studijose ir praktikoje, 2019 The aim of the work is to determine the most effective option for the roof parapet installation in A ++ class industrial buildings and to determine the most rational option for installing a roof parapet.
Donatas Aviža +2 more
doaj
Chemistry – A European Journal, EarlyView.Surface‐bound ferulate phenolate complexes undergo styrene‐like polymerization on alumina, yielding a polymeric carbonaceous layer that progressively transforms into polyaromatic carbon domains with concomitant release of aromatic products, while parallel surface‐assisted decarboxylation produces 4‐vinylguaiacol. ABSTRACT A fundamental understanding of
Tetiana V. Kulik +11 more
wiley +1 more source
Access to Uncharted (Ethoxy)difluoromethylated‐Containing Tetrahydrofurans by Hydrogenation
Chemistry – A European Journal, EarlyView.A Pd/C‐catalyzed selective hydrogenation of (ethoxy)difluoromethylated‐containing tetrahydrofurans was achieved. Depending on the pressure of H2, a divergent process led to either cis CF2CO2Et‐containing tetrahydrofurans or valuable α,α‐difluoro‐β‐hydroxyesters, offering key fluorinated building blocks for drug discovery while keeping the CF2CO2Et ...
Thibaud Charvillat +7 more
wiley +1 more source
A Homoleptic Copper(I) Acetylene Complex
Chemistry – A European Journal, EarlyView.Ligand substitution of weakly coordinated N2 in [(N2)Cu{Al(ORF)4}] (RF = C(CF3)3) leads to the homoleptic acetylene complex [Cu(C2H2)3]+[Al(ORF)4]−, which was characterized by single crystal x‐ray diffraction, NMR, and Raman spectroscopy, as well as by extensive quantum chemical calculations. ABSTRACT We report the synthesis and characterization of the
Julie Willrett +3 more
wiley +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Abstract A streamlined characterization framework (WSPLK) is presented for modelling complex reservoir fluids using cubic equations of state. The key methodological contribution is the introduction of a single global parameter ε directly into Pedersen's boiling‐point correlation, restoring pure‐component calibration and eliminating the need for ...
Angélica Merlo‐Robredo +3 more
wiley +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Accurately simulating multiphase flows at low capillary numbers remains challenging due to spurious currents and interface discretization errors. We present a systematic comparison of four volume‐of‐fluid (VOF) solvers within the OpenFOAM framework for pressure‐driven Poiseuille–Bingham flow over grooved surfaces: interFoam with classical ...
Amir Joulaei +2 more
wiley +1 more source
Preventing wall deposition in duct flows: The role of particle number density and flow direction
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Particle deposition in wall‐bounded turbulent flows is a challenge in many industries, including pneumatic conveying, filtration, and related applications. When particles accumulate near boundaries, they reduce transport efficiency, alter near‐wall flow structures, and cause blockage.
Gizem Ozler, Holger Grosshans
wiley +1 more source
Silica Coating Enhances the PFAS Photocatalytic Properties of Boron Nitride
CleanMat, EarlyView.A coating of 6 wt% SiO2 effectively covered the edges of BN, which lowered BN hydrolysis and increased PFOA photodegradation. ABSTRACT Boron nitride (BN) has recently emerged as a promising material capable of breaking down toxic perfluorooctanoic acid (PFOA) and other per‐ and polyfluoroalkyl substances (PFAS) through photocatalysis. However, chemical
Youngkun Chung +7 more
wiley +1 more source