Results 21 to 30 of about 9,719 (268)

Effect of aprotic solvent on characteristics of Al2O3 ceramic hollow fiber substrates prepared by phase inversion for hydrogen permeation applications

open access: yesJournal of Asian Ceramic Societies, 2022
The phase inversion procedure was used to prepare Al2O3 ceramic hollow fiber substrates (AlCHFS) utilizing the dimethyl sulfoxide (DMSO), N,N-dimethylacetamide (DMAC), and 1-methyl-2-pyrrolidone (NMP) aprotic solvents.
Edoardo Magnone   +6 more
doaj   +1 more source

Solvent effect on electronic absorption spectra of cyclohex-1-enylcarboxylic and 2-methylcyclohex-1-enylcarboxylic acids [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
The ultraviolet absorption spectra of cyclohex-1-enylcarboxylic acid and 2-methylcyclohex-1-enylcarboxylic acid were determined in six protic and nine aprotic solvents in the wavelength range from 200 to 400 nm.
VERA V. KRSTIC   +2 more
doaj   +2 more sources

Solvent effect on electronic absorption spectra of some 2-aminobenzimidazoles [PDF]

open access: yesActa Periodica Technologica, 2002
The effect of protic and aprotic solvents on electronic apsorption spectra of 1-(3-X-benzil)-2-aminobenzimidazoles (X=CH3;OCH3; Cl) was examined. UV-apsorption spectra (200-400 nm) were recorded in five protic and four aprotic solvents. Batochromic shift
Perušić-Janjić Nada U.   +2 more
doaj   +1 more source

Theoretical Investigation of Solvation Effects on the Tautomerism of Maleic Hydrazide

open access: yesE-Journal of Chemistry, 2012
A DFT study is used to calculate structural data of tautomers of maleic hydrazide (MH) in the gas phase and selected solvents such as benzene (non-polar solvent), tetrahydrofuran (polar aprotic solvent) and methanol (protic solvent), dimethyl sulfoxide ...
Meisam Shabanian   +3 more
doaj   +1 more source

Substrate–Solvent Crosstalk—Effects on Reaction Kinetics and Product Selectivity in Olefin Oxidation Catalysis

open access: yesChemistry, 2021
In this work, we explored how solvents can affect olefin oxidation reactions catalyzed by MCM-bpy-Mo catalysts and whether their control can be made with those players.
Rita N. Sales   +3 more
doaj   +1 more source

The Role of Solvent on the Kinetics and Mechanism of the Hydrolysis of Salicylidene Benzoyl Hydrazone [PDF]

open access: yesمجلة جامعة النجاح للأبحاث العلوم الطبيعية, 1988
The effect of various solvents on the kinetics and mechanism of the hydrolysis of Salicylidene Benzoyl hydrazone (SBH) has been studied at five different temperatures (17-45 C) using U.V. and visible spectrophotometry. In both protic and aprotic solvents,
Maher Abu-Eid
doaj   +1 more source

Experimental Studies on the UV-Spectra of Several Substituted Pyridine N-Oxides and Conjugated Cationic Acids in Acetonitrile

open access: yesMolecules, 1997
The ultraviolet spectra of heterocyclic N-oxides of pyridine N-oxide series and the conjugated cationic acids (simple cations of protonated N-oxides) in acetonitrile as the representative of polar aprotic solvents, were determined.
Lech Chmurzynski
doaj   +1 more source

Dispersions of Goethite Nanorods in Aprotic Polar Solvents [PDF]

open access: yesMaterials, 2017
Colloidal suspensions of anisotropic nanoparticles can spontaneously self-organize in liquid-crystalline phases beyond some concentration threshold. These phases often respond to electric and magnetic fields. At lower concentrations, usual isotropic liquids are observed but they can display very strong Kerr and Cotton-Mouton effects (i.e., field ...
Coursault, Delphine   +6 more
openaire   +3 more sources

Investigation of solvent effects on electronic absorption spectra of some substituted 1,2,4-triazoline-3-thiones

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2010
The influence of the polarity of the solvent and hydrogen bonding on the electronic absorption spectra of some previously synthesized substituted 1,2,4-triazoline-3-thiones was studied.
Mirjana Jankulovska   +4 more
doaj   +1 more source

The electroreduction of oxygen in aprotic solvents [PDF]

open access: yesJournal of Electroanalytical Chemistry, 2020
Abstract The electrochemical reduction of oxygen in a range of six polar aprotic solvents is investigated via linear sweep voltammetry at platinum, gold, and carbon fibre microelectrodes. Values for the standard heterogeneous electron transfer rate constant (k0) are reported, and in all cases follow the trend with electrode material of k0(C) > k0(Pt)
Azrul Azhar   +4 more
openaire   +1 more source

Home - About - Disclaimer - Privacy