LCMI, Laboratoire de Chimie des Matériaux Inorganiques, UFR SSMT, Université de Cocody-Abidjan, 22 BP 582 Abidjan 22, Côte d'Ivoire.
J Colloid Interface Sci. 2012 Sep 15;382(1):17-21. doi: 10.1016/j.jcis.2012.05.039. Epub 2012 May 31.
The surface properties and functionality of an illite-containing clay mineral in alkaline solutions containing increasing quantities of calcium hydroxide were investigated using FTIR monitored pyridine adsorption at various temperatures. Results showed that the binding behavior of electron donor pyridine molecules to illite platelets is mostly governed by electron acceptor sites located at the edges of the clay particles. The binding of bulky hydrated calcium ions at the surface of the illite platelets decreases the surface area of illite. Moderate thermal treatments up to 450°C do not affect the structure of the clay mineral but strongly decrease the number of Lewis and Brönsted sites available at the edges of the clay platelets.
采用 FTIR 监测吡啶吸附，研究了在含有越来越多氢氧化钙的碱性溶液中含伊利石的粘土矿物的表面性质和功能。结果表明，供电子吡啶分子与伊利石薄片的结合行为主要受位于粘土颗粒边缘的电子接受位控制。水合的大体积钙离子在伊利石薄片表面的结合降低了伊利石的表面积。高达 450°C 的适度热处理不会影响粘土矿物的结构，但强烈降低了粘土颗粒边缘可用的路易斯和布朗斯台德位的数量。
