腐殖酸在纯碱溶液高压溶出过程中的存在形态  

Existing Forms of Humic Acid in Sodium Hydroxide Solution at High Pressure

作　　者：周伟[1,2] 李军旗[1,2] 金会心[1,2] 毛小浩[1,2] 蔡灿[1,2] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]贵州省冶金工程与过程节能重点实验室,贵州贵阳550025

出　　处：《湿法冶金》2016年第2期157-161,共5页Hydrometallurgy of China

基　　金：国家自然科学基金资助项目(51474079)

摘　　要：腐殖酸在纯碱溶液中经多次高压溶出后的溶出液制成萃取液和酯化液,用气相色谱质谱联用仪GC-MS分析成分,研究有机物形态。试验结果表明:腐殖酸经高压溶出转变为多种有机物,主要为有机酸,且大多为高碳链形式有机酸,及少量的烷类和酮类有机物;腐殖酸大分子有机物通过高压循环分解成小分子有机物,并逐渐向长链有机酸、烷烃和草酸盐转化,随循环次数增多,烷烃种类也在增加。The dissolving solution is made into extraction liquor and esterification liquor after the humic acid in sodium hydroxide solution dissolving repeatedly at high pressure.Analyzing the components of the extraction liquor and esterification liquor samples by gas chromatography mass spectrometry（GCMS）and studying the existing forms of organics,the results show that the humic acid in sodium hydroxide solution is transferred to organics.These organics are mainly organic acids which consist of high carbon chain and a small amount of alkanes and ketones.The humic acids are decomposed into small molecules by high pressure cycling.And the small molecules are transformed into long chain organic acid,alkane and oxalate gradually.Furthermore,with increasing the number of the cycle times,the types of alkanes increase too.

关 键 词：腐殖酸 纯碱溶液 高压溶出 形态 

分 类 号：TF821[冶金工程—有色金属冶金]