Alam T, Tarannum H, Ravi Kumar M N
Chemistry Department, University of Roorkee, Roorkee 247 667, India.
Talanta. 2000 May 5;51(6):1097-105. doi: 10.1016/s0039-9140(99)00349-5.
Interaction of aniline, p-toluidine and p-chloroaniline with nickel, cadmium and manganese hexacyanoferrates(II) has been studied. Nickel and cadmium hexacyanoferrates(II) showed maximum adsorption at neutral pH, whereas, manganese hexacyanoferrate(II) reacts with aniline, p-toluidine and p-chloroaniline forming the colored oligomers on its surface. The adsorption data obtained at neutral pH is fitted in Langmuir adsorption isotherm. The adsorption behavior of the studied aromatic amines followed the order: p-toluidine>aniline>p-chloroaniline, which is related to the basicities of the amines. Results of the present study suggest the importance of metal hexacyanoferrates(II) and metal ions in stabilization of aromatic amines during the processes of prebiotic condensation reactions.
已对苯胺、对甲苯胺和对氯苯胺与六氰合铁（II）酸镍、镉和锰的相互作用进行了研究。六氰合铁（II）酸镍和镉在中性pH值下表现出最大吸附量，而六氰合铁（II）酸锰与苯胺、对甲苯胺和对氯苯胺反应，在其表面形成有色低聚物。在中性pH值下获得的吸附数据符合朗缪尔吸附等温线。所研究的芳香胺的吸附行为顺序为：对甲苯胺>苯胺>对氯苯胺，这与胺的碱性有关。本研究结果表明，在益生元缩合反应过程中，六氰合铁（II）酸盐和金属离子对芳香胺的稳定具有重要作用。
