皂石的合成与交联  

Synthesis and Pillaring of Saponite

作　　者：刘子阳[1] 黄东律 王彩霞[1] 蒋大振[1] 

机构地区：[1]吉林大学化学系

出　　处：《吉林大学自然科学学报》1992年第3期90-94,共5页Acta Scientiarum Naturalium Universitatis Jilinensis

基　　金：国家自然科学基金

摘　　要：采用pH控制法合成了高结晶度的皂石。核磁共振、化学分析、红外所得结果表明,通过调变投料比可对四面体片上铝量在一定范围内进行调变;用Al_(13)交联皂石时,交联密度与四面体片上AlO_4的量相关;交联皂石在焙烧过程中,伴随着层上Al—O键的断裂,铝柱与层通过羟基缩合以Si—O—Al_p方式联结;样品的表面酸性与柱密度有关。High crystallinity saponite was synthesized by means of controlling pH value. It is indicated according to the results of MAS NMR, IR and chemical analysis that the aluminum amount, namely the negtive charge density in the tetrahedral sheet, can be adjusted by altering the composition of the start material. The pillar density is relative to the AlO_4 amount in tetrahedral sheet if the saponite is pillared with Al_(13). While the pillared saponite is calcinated the linkage mode of pillar with layer is Si—O—Al_p by means of hydroxy groups condensation with the breaking of Al—O bond. The surface acidity of samples is relative to pillar density.

关 键 词：皂石 交联皂石 表面 酸性 NMR 

分 类 号：TE624.91[石油与天然气工程—油气加工工程]