基于磷酸三丁酯络合萃取法的脱酚机理研究  

The Mechanism Research of Complexation-extraction Phenol Removal Based on Tributyl Phosphate

作　　者：高明龙 陈贵锋 董卫果 王吉坤 付楚芮 

机构地区：[1]煤炭科学技术研究院有限公司,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室,北京100013 [3]国家能源煤炭高效利用与节能减排技术装备重点实验室,北京100013

出　　处：《煤化工》2016年第4期56-59,63,共5页Coal Chemical Industry

基　　金：国家国际科技合作专项项目(2015DFG61830)

摘　　要：从微观层面的角度,对磷酸三丁酯(TBP)络合萃取脱酚过程的机理进行研究,首先采用红外光谱分析手段,分别测定TBP负载苯酚及邻苯二酚的红外光谱图,通过相应官能团的波数位移变化,得出TBP与酚类物质属氢键缔合;其次以TBP作为络合剂,煤油作为稀释剂,对苯酚的模拟水样进行萃取,研究络合萃取过程中的络合物结构,并建立络合萃取平衡模型,从而对络合萃取过程中分配系数进行预测。研究结果表明,磷酸三丁酯萃取苯酚的平衡分配系数模型对实验数据具有较好的拟合度。In this paper, the mechanism of tributyl phosphate（TBP） complexation-extraction process for phenol removal is studied from the micro-level perspective. Firstly, the load of TBP with phenol and catechol is measured by IR spectra. Associative mechanism of the complexation-extraction process and its complex structure are discussed through analyzing displacement of wave numbers of the relevant functional group. Secondly, TBP complexation-extraction equilibrium model is established on the basis of the extraction of phenol simulated water samples using TBP as complexing agent and kerosene as thinner. Thereby, it can predict the distribution coefficient of complexation-extraction process. The results show that equilibrium model of the extraction of phenol based on tributyl phosphate has a better fitting to the empirical data.

关 键 词：磷酸三丁酯 络合萃取 脱酚 苯酚 平衡模型 

分 类 号：X784[环境科学与工程—环境工程]