双价短链季铵盐改性黏土研究进展

烷基铵盐改性黏土的研究近年来引起了国内外学者的广泛关注,双价季铵盐的开发和利用为改性黏土的制备与性能研究开辟了新途径.综述了双价短链季铵盐及其复配体系改性黏土的吸附、膨胀性、稳定性、润湿性和催化性能,指出其基础研究的发展方向为有机改性黏土微观结构变化、水化膨胀过程中结合水类型的确定和界限的划分、结合水与有机改性黏土的水合机制等.

Research advances in clay modified by bis-quaternary ammonium salt with short-chain

The researches of clay modified by alkyl ammonium salts attracted the scholars'wide attention in China and abroad in recent years. The development and application of bis-quaternary ammonium salts opened a new way for the preparation and the property research of modified clays. The adsorption, swellability, stability, wettability and catalytic activity of the clays modified by bis-quaternary ammonium salt with short-chain and their composites were reviewed. The following are the developing trend of the basic research in this field: the microstructural changes of the organoclays, the type of combined water and boundary of hydration in clay swelling process as well as the hydration mechanism of combined water interacting with organoclays.