摘要
以钠基蒙脱土为原料，采用共聚法合成锆铝基柱撑蒙脱土，并研究不同锆铝摩尔比例和不同NaOH的量对柱撑蒙脱土制备的影响。XRD研究表明，当锆铝摩尔比例为1：6、加入70ml0．4mol／LNaOH时，可得到（001）面网层间距达1．9343nm的锆铝基柱撑蒙脱土。通过FT—IR发现，锆铝聚合羟基阳离子进入蒙脱土层间，形成Si-O-Al和Si-O-Zr。对柱撑前后蒙脱土的比表面积和孔径结构进行分析，发现锆铝基柱撑蒙脱土具有较大的比表面积，较为均匀的孔径分布，是一种合适的催化和吸附材料。
Zr/Al-pillared montmorillonite was prepared by using Na-montmorillonites as starting materials. The effect of Zr/A1 molar ratio and measurement of NaOH on Zr/A1 pillared montmorillonite was investigated. Characterization by XRD indicated that when the molar ratio of Zr^4＋ and Al^3＋ was 1=6 and the volume of 0.4 mol/L NaOH was 70 ml, the d（001） value of the pillared montmorillonite reached maximum. The FT-IR results of Zr/Al-montmorillonite showed that the Zr/Al polyoxocations had already inserted into the interlayer of montmorillonite and formed the band of Si-O Al and Si-O-Zr. BET analysis showed Zr/Al-montmorillonite had larger specific area and smaller pore distribution. This study indicated that it was a useful catalysis and absorbent adsorbent materials
出处
《矿物岩石》
CAS
CSCD
北大核心
2009年第2期1-4,共4页
Mineralogy and Petrology
基金
973国家重大基础研究项目(2005CB623701)
