Topic
Oxalic acid
About: Oxalic acid is a research topic. Over the lifetime, 11584 publications have been published within this topic receiving 173263 citations. The topic is also known as: ethanedioic acid & H2ox.
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TL;DR: From these oxidation by-products, a plausible reaction sequence for m-cresol mineralization on both anodes is proposed and the energy consumption for the corresponding electrochemical process is calculated.
116 citations
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TL;DR: The results showed that some useful chemicals and biofuels could be obtained by this process and the Higher Heating Value of the residue and the acetone-soluble fractions were higher than that of bagasse.
116 citations
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TL;DR: In this paper, a two-step reaction mechanism is proposed where inorganic carbon is rapidly adsorbed, forming a reactive bi-dentate surface Al-carbonate complex that is released to solution in a much slower, irreversible step.
116 citations
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TL;DR: Results obtained indicate that toluene, weakly adsorbed on the catalyst surface, is initially photooxidized to benzaldehyde which adsorbs onto the TiO(2-x)N(x) surface more strongly, leading to the formation of ring-opening products such as carboxylic acids and aldehydes.
Abstract: We report the photooxidation of toluene over nitrogen doped TiO2 (TiO2−xNx) under visible light irradiation. The photocatalytic oxidation of toluene in air over TiO2−xNx powders was studied using diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS), gas chromatography (GC), ion chromatography (IC), and gas chromatography mass spectrometry (GC-MS), focusing on the photocatalytic decomposition processes of toluene. Results obtained indicate that toluene, weakly adsorbed on the catalyst surface, is initially photooxidized to benzaldehyde which adsorbs onto the TiO2−xNx surface more strongly, leading to the formation of ring-opening products such as carboxylic acids and aldehydes. No gaseous intermediates were detected during the photooxidation. Major intermediates adsorbed at the catalyst surface were oxalic acid, (COOH)2, acetic acid, CH3COOH, formic acid, HCOOH, and pyruvic acid, CH3COCOOH, whereas more complicated carboxylic species, including propionic acid, CH3CH2COOH, isovaleric acid, (CH3)2CHCH2COOH, and succinic acid, (CH2COOH)2, were also found in the early stage of the photooxidation. These intermediate products were gradually photodegraded to CO2 and H2O under visible light irradiation.
116 citations
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TL;DR: A comprehensive set of transferable parameters have been fine-tuned to accurately reproduce bulk-phase physical properties and local intermolecular interactions for 8 different choline chloride-based DESs and gave near quantitative agreement at multiple temperatures for experimental densities, viscosities, heat capacities, and surface tensions.
Abstract: Deep eutectic solvents (DES) are a class of solvents frequently composed of choline chloride and a neutral hydrogen bond donor (HBD) at ratios of 1:1, 1:2, or 1:3, respectively. As cost-effective and eco-friendly solvents, DESs have gained considerable popularity in multiple fields, including materials, separations, and nanotechnology. In the present work, a comprehensive set of transferable parameters have been fine-tuned to accurately reproduce bulk-phase physical properties and local intermolecular interactions for 8 different choline chloride-based DESs. This nonpolarizable force field, OPLS-DES, gave near quantitative agreement at multiple temperatures for experimental densities, viscosities, heat capacities, and surface tensions yielding overall mean absolute errors (MAEs) of ca. 1.1%, 1.6%, 5.5%, and 1.5%, respectively. Local interactions and solvent structuring between the ions and HBDs, including urea, glycerol, phenol, ethylene glycol, levulinic acid, oxalic acid, and malonic acid, were accurate...
115 citations