摘要
利用界面张力、电导、FT-IR等研究了不同硝酸浓度下萃取有机相的微结构。利用Gaussian曲线拟合处理N,N-二丁基癸酰胺(DBDEA)的羰基吸收峰,结果表明体系中存在多种以氢键结合的物种如DBDEA·HNO3、(DBDEA)2·HNO3等。在较高酸度下有机相中萃取剂分子自组装成小的聚集体-反相胶团,极性核由水、硝酸和萃取剂高电荷密度的极性部分构成。
The micro-structure of the organic phase of N, N-dibutyldecanamide (abbr. DBDEA) loaded nitric acid was investigated by interfacial tension, percolative conduction and FT-IR spectroscopy under different nitric acid concentrations. The carbonyl stretching band was selected and a theoretical fitting of some Gaussian curves to the experimental profile of P(C = 0) band has been performed. The data concluded in the existence of species having different stoichiometries: DBDEA (.) HNO3, (DBDEA)(2) (.) HNO3, which are involved in hydrogen bonding. The extractant molecules self-assemble into small aggregates-reversed micelle at higher nitric acid concentration. The polar core is formed of water, nitric acid and the polar parts of the extractant molecules with high electron density. The extractant molecules on the interface can interact with more nitric acid molecules due to the ordered arrangement of HNO3 molecules in the microstructure of reversed micelle.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2003年第11期1175-1178,共4页
Chinese Journal of Inorganic Chemistry
基金
山东省学术骨干基金资助项目。
