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以浙江和新疆的膨润土为原料合成了氧化铬 -铝混杂柱支撑蒙脱石。分别用铝盐及铬盐溶液 ,经碱水解生成相应的聚羟基铬 -铝混杂阳离子的成柱溶液 ,聚羟基铬 -铝混杂阳离子通过阳离子交换引入蒙脱石 ,所得产物的性质用X射线衍射、热分析、红外光谱和BET比表面及孔径分布测量等方法研究并与氧化铬柱支撑蒙脱石 (简称铬蒙脱石 )的性能进行比较 ,所得氧化铬 -铝混杂柱支撑蒙脱石 (简称铬 -铝蒙脱石 ) ,其基面间距较高 (2 .1nm) ,稳定性也较好 ,BET氮比表面积为 2 16m2 /g ,这表明它很有希望用于许多催化反应
The chromia - aluminum hybrid column supported montmorillonite was synthesized from bentonite in Zhejiang and Xinjiang. Alkaline hydrolysis was carried out to form the corresponding column solution of polyhydroxyl chromium-aluminum mixed cations with aluminum salt and chromium salt solution respectively. The polyhydroxyl chromium-aluminum mixed cations were introduced into montmorillonite by cation exchange. The properties of the obtained products were characterized by X-ray diffraction , Thermal analysis, FTIR, BET surface area and pore size distribution measurement and compared with the performance of chromium oxide column supported montmorillonite (abbreviated as montmorillonite), the obtained chromium oxide-aluminum mixed column supported montmorillonite Referred to as chromium - aluminum montmorillonite), its base surface spacing is higher (2.1nm), the stability is better, BET specific surface area of nitrogen is 16m2 / g, indicating that it is promising for many catalytic reactions