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Water-soluble nanoclusters CARBON, METHOD FOR ITS PRODUCTION AND ITS USE
Water-soluble nanoclusters CARBON, METHOD FOR ITS PRODUCTION AND ITS USE
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机译:水溶性纳米团簇碳,其制备方法和用途
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FIELD: chemistry.;SUBSTANCE: first, coal tar is treated with sulphuric acid at temperature of (60-70)°C. Unreacted aromatic hydrocarbons are successively washed with toluene and acetone, and unreacted sulphuric acid and formed aromatic sulphonic acids are washed with water to pH 6.5-7.0. The obtained mass is dried and residual aromatic hydrocarbons are removed by successively washing with toluene and acetone in a Soxhlet apparatus. The water-soluble part is extracted with water in form of an aqueous solution which contains both a carbon nanocluster polysulphonic derivative and a carbon nanocluster hydroxyl derivative which is precipitated with calcium carbonate or hydroxide. The filtered solution is evaporated on a rotary evaporator obtaining a dry end product - water-soluble polysulphonic derivative of a carbon nanocluster, which is a yellow-brown power with density of 1.2 g/cm3. The clusters have size of the order of 1-2 nm and molecular weight of 2000-3000.;EFFECT: invention can be used to modify carbon fibres and fabrics, as a concrete plasticiser modifier which improves plasticising and water-reducing properties thereof.;9 cl, 1 dwg, 2 ex
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机译:领域:化学。物质:首先,在(60-70)°C的温度下用硫酸处理煤焦油。未反应的芳族烃依次用甲苯和丙酮洗涤,未反应的硫酸和形成的芳族磺酸用水洗涤至pH 6.5-7.0。将获得的物料干燥,并通过在索氏提取器中依次用甲苯和丙酮洗涤除去残留的芳族烃。水溶性部分用水以水溶液的形式萃取,该水溶液既包含碳纳米团簇多磺酸衍生物,又包含用碳酸钙或氢氧化钙沉淀的碳纳米团簇羟基衍生物。过滤后的溶液在旋转蒸发仪上蒸发,得到干燥的终产物-碳纳米团簇的水溶性多磺酸衍生物,其为黄褐色粉末,密度为1.2 g / cm 3 Sup>。团簇的尺寸为1-2nm量级,分子量为2000-3000。效果:本发明可用于改性碳纤维和织物,作为改善其增塑和减水性能的混凝土增塑剂。 9 cl,1 dwg,2 ex
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