Nonionic fluorinated surfactant:: Investigation of phase diagram and preparation of ordered mesoporous materials

被引:77
作者
Blin, JL [1 ]
Lesieur, P [1 ]
Stébé, MJ [1 ]
机构
[1] Univ Nancy 1, UMR 7565, Equipe Physicochim Colloides, Fac Sci,CNRS, F-54506 Vandoeuvre Les Nancy, France
关键词
D O I
10.1021/la035834k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The behavior of fluorinated surfactant F(CF2)(8)C2H4(OC2H4)(9)OH in water solution was investigated, and the preparation of mesoporous molecular sieves was achieved. A direct micellar phase (L-1) and a hexagonal (H-1) liquid crystal were found. Small-angle X-ray scattering measurements proved that the hydrophobic chains are completely extended and that the cross sectional area remains constant in H-1. At 80 degreesC, materials with a hexagonal array of their channel are prepared via a cooperative templating type mechanism in a wide range of surfactant concentrations (5-20 wt %). Decreasing the hydrothermal temperature leads to the formation of wormhole-like structure. In this case the channel arrangement is no longer governed by the surfactant behavior but by the silica condensation and polymerization. An increase of the mean pore diameter with heating temperature is noted. This result is associated with changes of aggregation number with temperature. A comparison of the characteristics of the materials obtained with both hydrogenated and fluorinated surfactants is also made.
引用
收藏
页码:491 / 498
页数:8
相关论文
共 44 条
  • [1] Ionic surfactant influence over the phase behaviour of a nonionic surfactant based system
    Alibrahim, M
    Stebe, MJ
    Dupont, G
    Ravey, JC
    [J]. JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE, 1997, 94 (09) : 1614 - 1633
  • [2] LIQUID-CRYSTALLINE PHASES AS TEMPLATES FOR THE SYNTHESIS OF MESOPOROUS SILICA
    ATTARD, GS
    GLYDE, JC
    GOLTNER, CG
    [J]. NATURE, 1995, 378 (6555) : 366 - 368
  • [3] TEMPLATING OF MESOPOROUS MOLECULAR-SIEVES BY NONIONIC POLYETHYLENE OXIDE SURFACTANTS
    BAGSHAW, SA
    PROUZET, E
    PINNAVAIA, TJ
    [J]. SCIENCE, 1995, 269 (5228) : 1242 - 1244
  • [4] BARRETT EP, 1951, J AM CHEM SOC, V73, P37
  • [5] A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES
    BECK, JS
    VARTULI, JC
    ROTH, WJ
    LEONOWICZ, ME
    KRESGE, CT
    SCHMITT, KD
    CHU, CTW
    OLSON, DH
    SHEPPARD, EW
    MCCULLEN, SB
    HIGGINS, JB
    SCHLENKER, JL
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (27) : 10834 - 10843
  • [6] Synthesis of nanostructured mesoporous zirconia using CTMABr-ZrOCl2•8H2O systems:: a kinetic study of synthesis mechanism
    Blin, JL
    Flamant, R
    Su, BL
    [J]. INTERNATIONAL JOURNAL OF INORGANIC MATERIALS, 2001, 3 (07): : 959 - 972
  • [7] Well-ordered spherical mesoporous materials CMI-1 synthesized via an assembly of decaoxyethylene cetyl ether and TMOS
    Blin, JL
    Léonard, A
    Su, BL
    [J]. CHEMISTRY OF MATERIALS, 2001, 13 (10) : 3542 - 3553
  • [8] BLIN JL, 2002, STUD SURF SCI CATAL, V141, P141
  • [9] On a theory of the van der Waals adsorption of gases
    Brunauer, S
    Deming, LS
    Deming, WE
    Teller, E
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1940, 62 : 1723 - 1732
  • [10] CHEN CY, 1995, MICROPOROUS MATER, V4, P20