水解法制备Al_(13)Keggin离子的若干影响因素

Influence Factors in Synthesis of Al_(13)Keggin Ion by Hydrolysis Method

作为柱撑粘土的柱化剂和水处理的絮凝剂的有效形态,Al13Keggin离子在石油化工、环境保护、水处理等领域具有广阔的应用前景,本文首先介绍了Al13Keggin离子的结构,然后由Al3+的水解特性入手讨论了总铝浓度(AlT)、碱化度(m=[OH-]/[Al3+])、加碱方式、加碱速率等多个因素对水解法制备Al13Keggin离子的影响,指出一次加碱法和微量滴碱法可能具有不同水解反应历程,最后对Al13Keggin离子今后可能的研究方向作出了展望。

As an agent of pillarization for interlayer clays and efficient morphology of flocculation in water treatment,the Al13Keggin ion has the broad application foreground in many fields such as petrochemical industry,environmental protection,water treatment and so on.In this passage we first introduced the structure of Al13Keggin ion,and then discussed influence factors in synthesis of Al13Keggin ion by hydrolysis method,including total concentration of Al^3＋（AlT）,the ratio of n[OH-]/n[Al^3＋]（m）,injection ways of alkal,injection rate and so on.It should be noted that different injection ways of alkal may lead to diffetent hydrolysis process.At last the development orientation of Al13Keggin ion in the future was expected.