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中南大学学报(自然科学版)

Journal of Central South University

第50卷    第7期    总第299期    2019年7月

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文章编号:1672-7207(2019)07-1521-06
异辛酸镍的电化学合成
杨声海,李为轮,吴彦增,王长红,陈永明

(中南大学 冶金与环境学院,湖南 长沙,410083)

摘 要: 研究异辛酸镍的电化学合成,考察支持电解质氢氧化钠浓度、氯化钠浓度、电流密度和温度对合成过程中的影响,确定各个影响因素的最佳条件。并通过溶解过滤洗涤对产物进行除杂,再通过蒸馏分离有机溶剂获得产品。使用红外光谱定性分析确定产物结构。通过稀盐酸溶解产物来对产品中的镍质量分数进行分析。最后对电解液进行重复循环利用。研究结果表明:在最佳实验条件下,即氢氧化钠浓度为0.2 mol/L、氯化钠浓度为 2.0 mol/L、电流密度为2 380 A/m2和温度为60 ℃时,产率在95%以上,产物镍金属质量分数在10%以上,技术指标符合Q/FMH02—2011标准要求。通过红外光谱表征,确定产物为异辛酸镍。通过电解液的循环利实验,5次循环实验中产品中的镍质量分数、产率以及产品杂质钠质量分数均比较稳定,可以实现电解液的循环使用。

 

关键字: 电化学合成;异辛酸镍;循环利用;红外光谱

Electrochemical synthesis of nickel isooctanoate
YANG Shenghai, LI Weilun, WU Yanzeng, WANG Changhong, CHEN Yongming

School of Metallurgy and Environment, Central South University, Changsha 410083, China

Abstract:The electrochemical synthesis of nickel isooctanoate was studied systematically. The effects of supporting electrolyte NaOH concentration, NaCl concentration, current density and temperature on the electrochemical synthesis process were investigated, and the optimal condition for each influencing factor was determined. The impurities were removed by dissolving and filtering, and finally the organic solvent was separated by distillation to obtain a final product. The product was qualitatively analyzed using FT-IR to determine the structure of the product, and the product was analyzed by dilute hydrochloric acid lysate. Finally, the electrolyte was repeatedly recycled. The results show that the optimal experimental condition is as follows: NaOH concentration of 0.2 mol/L, NaCl concentration of 2.0 mol/L, current density of 2 380 A/m2, temperature of 60 ℃. The yield is above 95%, the nickel content of the product is above 10%, and the technical indicators meet the requirements of Q/FMH02—2011. The product is identified as nickel isooctanoate by FT-IR. Through the circulation use experiment of the electrolyte, the nickel mass fraction, the yield and the impurities sodium mass fraction of the product in the five-cycle experiments are relatively stable, and the electrolyte can be recycled.

 

Key words: electrochemical synthesis; nickel isooctanoate; recycling; FT-IR

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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