Vibrational spectroscopy study of the structure of silicalite-1 films on a gold surface

被引：9

作者：

Mihailova, B ^{[1
]}

Engström, V ^{[1
]}

Hedlund, J ^{[1
]}

Holmgren, A ^{[1
]}

Sterte, J ^{[1
]}

机构：

[1] Lulea Univ Technol, Dept Chem & Met Engn, S-97187 Lulea, Sweden

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 1999年 / 32卷 / 03期

关键词：

infrared spectroscopy; modelling; silicalite-1; structural changes; thin film;

D O I：

10.1016/S1387-1811(99)00118-3

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The structure of silicalite-l films grown on seeded gold surfaces is investigated by modelling the observed changes in the infrared reflection absorption (IRRA) spectra of samples treated for different times in the synthesis solution. The results show that a gradual deformation of the five-membered silicon-oxygen rings occurs during the first 11 h of the hydrothermal treatment which leads to breaking of Si-O-Si linkages and to formation of linear defects along the c-axis. Interactions between the dislocations and the grain boundaries during the further growth of the film provoke the appearance of void spaces in the grain boundary interface which may cause incipient cracking in the silicalite-l films on seeded gold surfaces. The range 1000-1300 cm(-1) in the IRRA spectra is found to be appropriate for estimating the quality of silicalite-l films grown on metal surfaces. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：297 / 304

页数：8

共 20 条

[1] Synthesis and applications of molecular sieve layers and membranes [J].

Bein, T .

CHEMISTRY OF MATERIALS, 1996, 8 (08) :1636-1653

[2] MECHANISMS OF STRUCTURE DIRECTION IN THE SYNTHESIS OF PURE-SILICA ZEOLITES .1. SYNTHESIS OF TPA/SI-ZSM-5 [J].

BURKETT, SL ;

DAVIS, ME .

CHEMISTRY OF MATERIALS, 1995, 7 (05) :920-928

[3] CALCINATION OF LARGE MFI-TYPE SINGLE-CRYSTALS .2. CRACK FORMATION AND THERMOMECHANICAL PROPERTIES IN VIEW OF THE PREPARATION OF ZEOLITE MEMBRANES [J].

GEUS, ER ;

VANBEKKUM, H .

ZEOLITES, 1995, 15 (04) :333-341

[4] Controlling the preferred orientation in silicalite-1 films synthesized by seeding [J].

Hedlund, J ;

Mintova, S ;

Sterte, J .

MICROPOROUS AND MESOPOROUS MATERIALS, 1999, 28 (01) :185-194

[5] Ultrathin oriented zeolite LTA films [J].

Hedlund, J ;

Schoeman, B ;

Sterte, J .

CHEMICAL COMMUNICATIONS, 1997, (13) :1193-1194

[6]

HEDLUND J, 1998, P 12 INT ZEOL C BALT, P1809

[7] Zeolitic coatings and their potential use in catalysis [J].

Jansen, JC ;

Koegler, JH ;

van Bekkum, H ;

Calis, HPA ;

van den Bleek, CM ;

Kapteijn, F ;

Moulijn, JA ;

Geus, ER ;

van der Puil, N .

MICROPOROUS AND MESOPOROUS MATERIALS, 1998, 21 (4-6) :213-226

[8] Growth model of oriented crystals of zeolite Si-ZSM-5 [J].

Koegler, JH ;

vanBekkum, H ;

Jansen, JC .

ZEOLITES, 1997, 19 (04) :262-269

[9] A NOTE ON A N APPROXIMATELY-1030 CM-1 BAND IN IR-SPECTRA OF ZEOLITE ZSM-5 [J].

LEFEBRE, RA ;

JANSEN, JC ;

VANBEKKUM, H .

ZEOLITES, 1987, 7 (05) :471-474

[10] Synthesis and characterization of oriented MFI membranes prepared by secondary growth [J].

Lovallo, MC ;

Gouzinis, A ;

Tsapatsis, M .

AICHE JOURNAL, 1998, 44 (08) :1903-1913

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