以 K-DMSO、K-MeOH 为前驱体成功制备了 K-[Bmim]Br 和 K-[Emim]Br 烷基咪唑离子液体插层高岭石复合物.利用 X 射线衍射(XRD)、红外光谱(FT-IR)、差热分析法(TG-DSC)及扫描电镜(SEM)等技术对产物进行表征.XRD 结果显示离子液体成功进入到高岭石层间,增大了层间距,并且Δd 值随着烷基链增长而增大,同时证明经甲醇插层5~6 d 后,离子液体插层达到最佳条件.FT-IR 结果表明离子液体与高岭石内表面羟基形成氢键.TG-DSC 结果显示离子液体插层后,高岭石的脱羟基温度由490．6℃分别上升到501．5和495．5℃,热稳定性能得到提升. SEM 结果表明插层复合物的形貌较原始高岭石有了明显的改变.
K-[Emim]Br and K-[Bmim]Br were successfully prepared by using K-DMSO and K-MeOH intercala-tion composites as precursors.The products were characterized by X-ray diffraction (XRD),thermo gravimet-ric-differential scanning calorimetry (TG-DSC),Fourier transform infrared spectroscopy (FT-IR)and scanning electron microscope (SEM).The XRD results showed that the interlayer d-spacing of kaolinite increased as the result of the successful insertion of ionic liquids,and the d-spacing Δd increased with longer alkyl chain,also concluded that methanol interacted with kaolinite for 5 to 6 d could provide ionic liquids with the optimal inter-calated condition.The FT-IR spectras suggested that ionic liquids formed hydrogen bonds with the inner surface hydroxyls of kaolinite.The TG-DSC results showed that kaolinite got a better thermal stability due to the in-crease of the dehydroxylation temperature from 490.6 to 501.5 and 495.5 ℃,respectively.The morphology of products had big changes compared with the raw kaolinite according to the SEM images.
参考文献
| [1] | Letaief S;Tonle I K;Diaco T et al.Nanohybrid materi-als from interlayer functionalization of kaolinite[J].Applied Clay Seience,2008,42(01):95-101. |
| [2] | Park, Y.;Ayoko, G.A.;Kristof, J.;Horváth, E.;Frost, R.L. .Thermal stability of organoclays with mono- and di-alkyl cationic surfactants: A comparative study[J].Journal of thermal analysis and calorimetry,2012(3):1087-1093. |
| [3] | Yoshihiko Komori;yoshiyuki Sugahara;Kazuyuki Kuroda .Intercalation of alkylamines and water into kaolinite with methanol kaolinite as an intermediate[J].Applied clay science,1999(1/2):241-252. |
| [4] | White C E;Provis J L;Riley D P et al.What is the structure of kaolinite reconciling theory and experiment[J].Journal of Physical Chemistry B,2009,1 13(1 9):6756-6765. |
| [5] | Jakub Matusik;Zenon Klapyta .Characterization of kaolinite intercalation compounds with benzylalkylammonium chlorides using XRD, TGA/DTA and CHNS elemental analysis[J].Applied clay science,2013(Oct.):433-440. |
| [6] | Dedzo G K;Detellier C .Intercalation of two phenolic acids in an ionic liquid-kaolinite nanohybrid material and desorption studies[J].Applied Clay Seience,2014,97-98:153-159. |
| [7] | Sadok Letaief;Christian Detellier .Nanohybrid materials from the intercalation of imidazolium ionic liquids in kaolinite[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2007(15):1476-1484. |
| [8] | 张印民,刘钦甫,伍泽广,郑启明.高岭石／二甲基亚砜插层复合物的制备及影响因素[J].硅酸盐学报,2011(10):1637-1643. |
| [9] | 陈洁渝,严春杰,万为敏,余洪杰.高岭石/尿素夹层复合物的结构及热稳定性[J].硅酸盐学报,2010(09):1837-1842. |
| [10] | Itagaki T.;Kuroda K. .Organic modification of the interlayer surface of kaolinite with propanediols by transesterification[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2003(5):1064-1068. |
| [11] | 张先如,孙嘉,徐政.PEG在微波诱导下对高岭石插层及剥片的研究[J].无机化学学报,2005(09):1321-1326. |
| [12] | 王凯,底兰波,张丽娟,张秀玲.离子液体助介孔TiO2/CoFe2 O4磁性复合光催化材料的制备及性能[J].功能材料,2014(10):10079-10083. |
| [13] | 何国田,谷明信,林远长,徐泽宇,何骥鸣,孟祥丹,李先忠,朱晓强,吴姣娇.离子液体作为软光学功能材料的研究进展[J].功能材料,2014(12):12027-12032. |
| [14] | Dedzo, G.K.;Detellier, C. .Ionic liquid-kaolinite nanohybrid materials for the amperometric detection of trace levels of iodide[J].The Analyst: The Analytical Journal of the Royal Society of Chemistry: A Monthly International Publication Dealing with All Branches of Analytical Chemistry,2013(3):767-770. |
| [15] | Letaief S;Elbokl TA;Detellier C .Reactivity of ionic liquids with kaolinite: Melt intersalation of ethyl pyridinium chloride in an urea-kaolinite pre-intercalate[J].Journal of Colloid and Interface Science,2006(1):254-258. |
| [16] | Letaief, S.;Detellier, C. .Application of thermal analysis for the characterisation of intercalated and grafted organo-kaolinite nanohybrid materials[J].Journal of thermal analysis and calorimetry,2011(3):831-839. |
| [17] | Li Zhang;Chang-juan Wang;Zhi-fei Yan;Xiu-ling Wu;Yong-qian Wang;Da-wei Meng;Hong-xue Xie .Kaolinite nanomaterial: Intercalation of 1-butyl-3-methylimidazolium bromine in a methanol-kaolinite pre-intercalate[J].Applied clay science,2013(Dec.):106-110. |
| [18] | Juan Zhang;Qinghua Zhang;Xueli Li .Nanocomposites of ionic liquids confined in mesoporous silica gels: preparation, characterization and performance[J].Physical chemistry chemical physics: PCCP,2010(8):1971-1981. |
| [19] | Gustave Kenne Dedzo;Sadok Letaief;Christian Detellier .Kaolinite-ionic liquid nanohybrid materials as electrochemical sensors for size-selective detection of anions[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2012(38):20593-20601. |
| [20] | Tonle I K;Leather S;Ngameni E et al.Nanohybrid materials from the grafting of imidazolium cations on the interlayer surfaces of kaolinite[J].Journal of Materials Chemistry,2009,1 9:5996-6003. |
| [21] | Heinz H;Vaia RA;Krishnamoorti R;Farmer BL .Self-assembly of alkylammonium chains on montmorillonite: Effect of chain length, head group structure, and cation exchange capacity[J].Chemistry of Materials: A Publication of the American Chemistry Society,2007(26):59-68. |
| [22] | Zhu, J.;Shen, W.;Ma, Y.;Ma, L.;Zhou, Q.;Yuan, P.;Liu, D.;He, H. .The influence of alkyl chain length on surfactant distribution within organo-montmorillonites and their thermal stability[J].Journal of thermal analysis and calorimetry,2012(1):301-309. |
| [23] | I. Lapides;S. Yariv .THERMO-X-RAY-DIFFRACTION ANALYSIS OFDIMETHYLSULFOXIDE-KAOLINITE INTERCALATION COMPLEXES[J].Journal of thermal analysis and calorimetry,2009(1):19-25. |
| [24] | Frost RL.;Horvath E.;Mako E.;Kristof J.;Cseh T. .The effect of mechanochemical activation upon the intercalation of a high-defect kaolinite with formamide[J].Journal of Colloid and Interface Science,2003(2):386-395. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%