Because decreasing the oxalic acid to vanadium pentoxide ratio is a time-consuming process, oxygen was introduced by using a low-porosity alumina tube. The heat treatment was performed inside an electrical tube furnace and in a variety of atmospheres, including pure nitrogen (99.999% purity) and ...
A method of preparing a composite cathode active material having superior cell characteristics includes mixing and milling starting material, carbon and an organic complexing agent. The mixture is heated at a first temperature in an inert atmosphere to f
(yamauchi@ i2cner.kyushu-u.ac.jp) CO2-Free Power Generation on an Iron Group Nanoalloy Catalyst via Selective Oxidation of Ethylene Glycol to Oxalic Acid in Alkaline Media Takeshi Matsumoto1,2, Masaaki Sadakiyo1,2, Mei Lee Ooi1,2, Sho Kitano1,2, Tomokazu Yamamoto2,3, Syo Matsumura2,3,...
Whereas succinic acid crystals did not act as heterogeneous ice nuclei, immersion freezing by oxalic acid dihydrate crystals led to a reduction of the ice saturation ratio at freezing onset by 0.066–0.072 compared to homogeneous freezing, which is by a factor of 2 higher than previously reported...
A liquid low concentration sodium-containing silicate solution as electrolyte for lead-acid storage batteries and its applications, is prepared by mixing a silica gel containing 40˜60 wt % SiO2, the weight units of such a silica gel are 5˜15; add 15-25 weight units water and stir until...
The spinning sol was obtained by mixing aluminum nitrate, oxalic acid, and polyvinylpyrrolidone with a mass ratio of 10:3:2. Fourier transform infrared (FTIR) spectra, X-ray diffraction (XRD), and scanning electron microscopy (SEM) were used to characterize the properties of the gel and ...
The spinning sol was obtained by mixing aluminum nitrate, oxalic acid, and polyvinylpyrrolidone with a mass ratio of 10:3:2. Fourier transform infrared (FTIR) spectra, X-ray diffraction (XRD), and scanning electron microscopy (SEM) were used to characterize the properties of the gel and ...
BCR results indicated that APR was most effective, although a slight enhancement of water-soluble phosphate was detected at the P:Pb molar ratio 4.0 at the beginning of incubation. Oxalic acid activated phosphates, and so mixing insoluble phosphates with oxalic acid may be a useful strategy to ...
The method comprises the steps that the oxalic acid is added into pure water to form an oxalic acid solution with the concentration 0.1-0.5 mol/L, then an auxiliary reagent is added according to the mole ratio 1:1 of the oxalic acid and the auxiliary reagent in the oxalic acid solution,...
The invention provides a method for producing a polycarboxylate water reducer from oxalic acid. The method comprises the following steps of 1, adding TPEG and deionized water into a reactor according to a ratio of 1: 2, heating the materials in the reactor to a temperature of 60 DEG C, ...