煤系高岭石有机夹层作用的实验研究

Experimental Study on the Intercalation of Organic Compounds in Kaolinite of Coal-bearing Strata

本文利用ＸＲＤ和ＩＲ研究了丙烯酰胺和脂肪酸盐与煤系高岭石的夹层作用及稳定性。通过极性有机化合物作夹带剂，成功地合成了高岭石－丙烯酰胺、高岭石－脂肪酸盐有机复合体。夹层作用完成后，层面间距从７．１８Ａ分别扩大到１１．２２Ａ和１１．３２Ａ。有机化合物能在高岭石层间形成稳定的夹层主要与夹层分子和高岭石内表面羟基形成氢键有关。

With XRD and IR, the authors conducted studies on the intercalation of acrylamide andsalts of fatty acids in kaolinite of coal-bearing strata and its stability. The acrylamide and thesalts of fatty acids were successfully intercalated into kaolinite by virtue of polar organic compounds which acted the part of entrainer. The basic spacing expanded from 7. 18A to 11. 22Aand 11. 32A respectively after the intercalation was perfectly accom-plished in kaolinite. Thephenomenon that organic compounds are intercalated into kaolinite and form a stable interlayeris probably related to the formation of hydrogen bonds between the inner-surface hydroxyls andthe intercalated molecules.