奇台风化煤水热法制备黄腐酸的绿色工艺研究

发布时间：2018-06-15 05:08

本文选题：风化煤 + 腐植酸　；参考：《现代化工》2017年02期

【摘要】：利用纳米氧化铜催化剂、过氧化氢绿色氧化剂对奇台风化煤进行水热法催化氧化制备黄腐植酸。通过正交实验对催化氧化工艺进行优化,并利用XRD、TEM、SEM研究了所制备的纳米氧化铜的微观结构及形貌,对黄腐植酸进行了结构表征,同时初步研究了催化氧化反应动力学。正交优化结果表明,在过氧化氢催化氧化工艺的最佳反应条件下,总腐植酸质量分数可达73.23%,其中黄腐酸质量分数为8.98%。工艺研究表明纳米氧化铜催化剂与过氧化氢氧化剂协同作用显著提高腐植酸的产率。反应动力学初步分析表明,过氧化氢催化氧化制备腐植酸的反应对风化煤的浓度的反应级数是3。微观结构分析表明纳米氧化铜催化剂结晶性较好,同时具有良好的分散性;FT-IR分析可知,奇台风化煤经过该工艺成功制备了黄腐酸,与工艺研究结论吻合。
[Abstract]:Yellow humic acid was prepared by hydrothermal oxidation of weathered coal with nanometer copper oxide catalyst and hydrogen peroxide green oxidant. The catalytic oxidation process was optimized by orthogonal experiment. The microstructure and morphology of the prepared nano-copper oxide were studied by means of XRDX Tem SEM. The structure of fulvic acid was characterized and the kinetics of catalytic oxidation reaction was preliminarily studied. The orthogonal optimization results show that the total humic acid mass fraction can reach 73.23 and the fulvic acid mass fraction is 8.98 under the optimum reaction conditions of hydrogen peroxide catalytic oxidation process. The results showed that the synergistic effect of nanometer copper oxide catalyst and hydrogen peroxide oxidant significantly improved the yield of humic acid. The preliminary analysis of the reaction kinetics showed that the reaction order of the oxidation of hydrogen peroxide to the concentration of weathered coal was 3. Microstructure analysis showed that nano-copper oxide catalyst had good crystallinity and good dispersion. FT-IR analysis showed that fulvic acid was successfully prepared from Qitai weathered coal by this process, which was in agreement with the conclusion of technological research.
【作者单位】：石油天然气精细化工教育部(自治区)重点实验室新疆大学;山东创新腐植酸科技股份有限公司;
【基金】：新疆大学校企联合项目(201304031159)
【分类号】：TQ536

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