铝交联蒙脱土的制备  

作　　者：于道永[1] 赵瑞玉[1] 阙国和[1] 王槐平[2] 王彪[2] 

机构地区：[1]石油大学重质油加工国家实验室 [2]石油大学仪器分析中心

出　　处：《石油大学学报（自然科学版）》1999年第4期81-84,共4页Journal of the University of Petroleum,China(Edition of Natural Science)

摘　　要：利用差热分析和Ｘ射线衍射分析方法对铝交联蒙脱土的性能进行了测试。研究表明，铝交联蒙脱土的最佳制备条件是：ＯＨ－与Ａｌ３＋的摩尔比为２．０，ＮＨ＋４与Ａｌ３＋的摩尔比为１．０，Ａｌ３＋与蒙脱土的质量比为０．０８１，交联搅拌时间为６ｈ。原料蒙脱土层结构的热稳定性是影响铝交联蒙脱土热稳定性的主要因素之一，ＮＨ＋４的加入能提高铝交联蒙脱土的热稳定性。The effects of hydroxy/aluminum, ammonium/aluminum and aluminum/clay ratios on properties of cross\|linked montmorillonite (CLM) were investigated by using XRD and DTA techniques. The study results indicate that the thermal stability of CLM mainly depends on the thermal stability of layer structure in the original clay. The optimum preparing conditions of CLM are as follows: mole ratio of OH\+- to Al\+\{3+\} is 2.0, that of NH\++\-4 to Al\+\{3+\} is 1.0, the mass ratio of Al\+\{3+\} to clay is 0.081, and agitating time is 6 hours. The addition of NH\++\-4 to the cross\|linking solution reduced the amount of cross\|linking agent loaded on the clay. The competition between NH\++\-4 and Al\|hydroxy cations for ion\|exchange sites may enhance the homogeneity of the resulting cross\|linked material.\=

关 键 词：蒙脱土 交联 铝 交联剂 制备 催化剂 炼油 

分 类 号：TE624.9[石油与天然气工程—油气加工工程] TQ426.95[化学工程]