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: In this article, the main effects and the interaction effects between operational parameters in the photocatalytic degradation of oxalic acid in a batch photo-reactor using TiO 2 aqueous suspension were investigated.
49 citations
TL;DR: In this article, a series of decomposition atmospheres (CH4−N2 in different ratios) were used to investigate their effects on the morphology and crystalline size of the metallic nickel particles.
Abstract: Metallic nickel nanoparticles were prepared primarily as catalysts for the thermal decomposition of methane to produce hydrogen. Nickel particle aggregates with controlled crystalline size and primary particle size were prepared first by the precipitation of nickel nitrate and oxalic acid in ethanol solution, followed by the thermal decomposition of nickel oxalate dihydrate under an oxygen-free atmosphere. The concentration of the reactants was found to play a critical role in the morphology and crystalline size of the nickel oxalate dihydrate and subsequently the resulting metallic nickel catalyst. The nickel oxalate dihydrate showed different crystalline sizes and morphologies including nanosheets, nanorods, and nanoneedles, depending on the concentration of the reactants. A series of decomposition atmospheres (CH4–N2 in different ratios) were used to investigate their effects on the morphology and crystalline size of the metallic nickel particles. The addition of CH4 in the gas stream during the nickel...
49 citations
TL;DR: In this article, the authors showed that crosslinking changes the chemical structure of polyvinyl alcohol, involving H 2 SO 4 in the reaction, resulting in thin-film composite membranes with polysulphone as substrate.
49 citations
TL;DR: In this paper, a homogeneous and homogenous catalytic ozonation by CuO/Al2O3 and Cu(II) ion of oxalic acid in aqueous solutions was investigated.
Abstract: Heterogeneous and homogenous catalytic ozonation by CuO/Al2O3 and Cu(II) ion of oxalic acid in aqueous solutions were investigated. At low pH range, the effectiveness of ozone could be clearly increased by the presence of CuO/Al2O3. At neutral pH with phosphate buffer, the oxidation reaction was strongly inhibited, whereas non-buffered experiments confirmed high removal efficiency for oxalic acid. At pH 7.5, the mineralization of oxalic acid could only slightly be boosted by the heterogeneous CuO/Al2O3. Here the application of a homogeneous Cu(II) catalyst in non-buffered oxalic acid solution results in higher DOC removal efficiency.
49 citations
TL;DR: Results showed that 4-CP was transformed to para-quinone by ozone, and subsequently destroyed to formic acid and oxalic acid, and without scavengers of inactivation the OH* radicals, 4- CP was destroyed to low molecular weight acid.
49 citations