Recent experiments suggested that water catalyzes the reaction of OH radicals with alcohols, while another work showed the opposite result. Here, we resolve this disagreement and show that heterogeneous oxidation systematically biased the work showing the catalytic effect and corroborate that water does not catalyze the reaction of OH with alcohols.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1039/d0cp00467g | DOI Listing |
Polymers (Basel)
December 2024
Departamento de Química, Facultad de Ciencias Naturales, Matemáticas y Medio Ambiente, Universidad Tecnológica Metropolitana (UTEM), J. P. Alessandri 1242, Santiago 7800002, Chile.
A series of hydrophilic copolymers were prepared using 2-hydroxyethyl methacrylate (HEMA) and itaconic acid (IA) from free radical polymerization at different feed monomer ratios using ammonium persulfate (APS) initiators in water at 70 °C. The herbicide 2,4-dichlorophenoxy acetic acid (2,4-D) was grafted to Poly(HEMA--IA) by a condensation reaction. The hydrolysis of the polymeric release system, Poly(HEMA--IA)-2,4-D, demonstrated that the release of the herbicide in an aqueous phase depends on the polymeric system's pH value and hydrophilic character.
View Article and Find Full Text PDFMicroorganisms
November 2024
Department of Biology, University Federico II, 80126 Naples, Italy.
is a Gram-negative bacterium that thrives in extreme acidic conditions. It has emerged as a key player in biomining and bioleaching technologies thanks to its unique ability to mobilize a wide spectrum of elements, such as Li, P, V, Cr, Fe, Ni, Cu, Zn, Ga, As, Mo, W, Pb, U, and its role in ferrous iron oxidation and reduction. catalyzes the extraction of elements by generating iron (III) ions in oxic conditions, which are able to react with metal sulfides.
View Article and Find Full Text PDFMolecules
December 2024
Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.
In this study, an iridium-catalyzed selective 1,4-reduction of α,β-unsaturated carbonyl compounds is realized, with water as a solvent and formic acid as a hydride donor. The new efficient iridium catalyst features a 2-(4,5-dihydroimidazol-2-yl)quinoline ligand. The chemoselectivity and catalyst efficiency are highly dependent on the electronic and steric properties of the substrates.
View Article and Find Full Text PDFFoods
December 2024
Department of Functional Food Product Development, Wroclaw University of Environmental and Life Sciences, 37 Chelmonskiego Str., 51-630 Wroclaw, Poland.
With growing environmental and health concerns surrounding meat consumption, meat analogs have emerged as sustainable and health-conscious alternatives. A major challenge in developing these products is replicating the fibrous, elastic texture of meat, where microbial transglutaminase (MTG) has shown significant potential. MTG catalyzes protein cross-linking, enhancing the structural integrity of meat analogs.
View Article and Find Full Text PDFChemistry
January 2025
National Tsing Hua University, Department of Chemical Engineering, 101, Sec 2, Kuang-Fu Rd., 300, Hsinchu, TAIWAN.
This study focuses on enhancing the water oxidation reaction (WOR) efficacy of dinuclear cobalt complex catalysts from both kinetic (turnover frequency, TOF) and thermodynamic (overpotential, η) perspectives. For this purpose, we synthesized six dinuclear cobalt complexes 1-6 comprising non-innocent ligands with different electronically active substituents (-OMe (1), -Me (2), -H (3), -F (4), -Cl (5), and -CN (6)). The electronic effects on the electrochemical WOR under neutral, acidic, and alkaline conditions were investigated experimentally and computationally.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!