Molecular selective adsorption of alkylphenols and alkylanilines from water by alkyl-grafted mesoporous alumina: A comparative study to alkyl-grafted mesoporous silica

被引：24

作者：

Inumaru, Kei ^{[1
]}

Nakano, Tomoyasu ^{[1
]}

Yamanaka, Shoji ^{[1
]}

机构：

[1] Hiroshima Univ, Grad Sch Engn, Dept Appl Chem, Higashihiroshima 7398527, Japan

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2006年 / 95卷 / 1-3期

基金：

日本科学技术振兴机构;

关键词：

nanostructure; molecular recognition; mesoporous alumina; mesoporous silica; hydrophobicity; endocrine disrupter; organic-inorganic nanocomposite;

D O I：

10.1016/j.micromeso.2006.05.026

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Molecular selective adsorption of alkylphenols and alkylanilines onto n-alkyl-grafted mesoporous alumina was investigated and compared to that onto n-alkyl-grafted mesoporous silica. Water adsorption isotherms revealed that the hydrophilic nanospaces of the mesoporous alumina became highly hydrophobic after dodecyl-grafting. Alkylanilines and alkylphenols with a large alkyl group, such as 4-heptylaniline (HA) and 4-heptylphenol (HP), were preferentially adsorbed by dodecyl-grafted mesoporous alumina (C12-MPA). A comparison of the adsorption isotherms of HA on C12-MPA with those on octyl-grafted mesoporous silica (C8-MPS) revealed that the surface density of the HA molecule adsorbed on C12-MPA was much lower than that adsorbed on C8-MPS. The different adsorption properties of the alkyl-grafted alumina and alkyl-grafted silica can be explained by a mechanism in which adsorbed molecules fit into the nanostructure by interacting with both the organic hydrophobic nanospaces and the inorganic pore walls, i.e. organic-inorganic cooperative molecular recognition within the nanostructure. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：279 / 285

页数：7

共 45 条

[1] Photochemical modification of the surface area and tortuosity of a trans-1,2-bis(4-pyridyl)ethylene periodic mesoporous MCM organosilica [J].

Alvaro, M ;

Ferrer, B ;

García, H ;

Rey, F .

CHEMICAL COMMUNICATIONS, 2002, (18) :2012-2013

[2] Methyl methacrylate polymerization at samarium(II)-grafted MCM-41 [J].

Anwander, R ;

Nagl, I ;

Zapilko, C ;

Widenmeyer, M .

TETRAHEDRON, 2003, 59 (52) :10567-10574

[3] SOMC@PMS. Surface organometallic chemistry at periodic mesoporous silica [J].

Anwander, R .

CHEMISTRY OF MATERIALS, 2001, 13 (12) :4419-4438

[4] Periodic mesoporous organosilicas with organic groups inside the channel walls [J].

Asefa, T ;

MacLachlan, MJ ;

Coombs, N ;

Ozin, GA .

NATURE, 1999, 402 (6764) :867-871

[5] A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES [J].

BECK, JS ;

VARTULI, JC ;

ROTH, WJ ;

LEONOWICZ, ME ;

KRESGE, CT ;

SCHMITT, KD ;

CHU, CTW ;

OLSON, DH ;

SHEPPARD, EW ;

MCCULLEN, SB ;

HIGGINS, JB ;

SCHLENKER, JL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (27) :10834-10843

[6] Chiral copper(II) bisoxazoline covalently anchored to silica and mesoporous MCM-41 as a heterogeneous catalyst for the enantioselective Friedel-Crafts hydroxyalkylation [J].

Corma, A ;

García, H ;

Moussaif, A ;

Sabater, MJ ;

Zniber, R ;

Redouane, A .

CHEMICAL COMMUNICATIONS, 2002, (10) :1058-1059

[7] From microporous to mesoporous molecular sieve materials and their use in catalysis [J].

Corma, A .

CHEMICAL REVIEWS, 1997, 97 (06) :2373-2419

[8] Ordered porous materials for emerging applications [J].

Davis, ME .

NATURE, 2002, 417 (6891) :813-821

[9] Solubilization in confined surfactant mesophases [J].

Denoyel, R ;

Rey, ES .

LANGMUIR, 1998, 14 (25) :7321-7323

[10] Functionalized monolayers on ordered mesoporous supports [J].

Feng, X ;

Fryxell, GE ;

Wang, LQ ;

Kim, AY ;

Liu, J ;

Kemner, KM .

SCIENCE, 1997, 276 (5314) :923-926

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