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On the introduction of intracrystalline mesoporosity in zeolites upon desilication in alkaline medium

被引：330
作者：
Groen, JC
Peffer, LAA
Moulijn, JA
Pérez-Ramírez, J
机构：
[1] Delft Univ Technol, Appl Catalyst Characterizat, DelfChemTech, NL-2628 BL Delft, Netherlands
[2] Delft Univ Technol, DelfChemTech, NL-2628 BL Delft, Netherlands
[3] Norsk Hydro AS, Agri Res Ctr, N-3907 Porsgrunn, Norway
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2004年 / 69卷 / 1-2期
关键词：
alkaline treatment; desilication; hierarchical porosity; mesopore formation; zeolites;
D O I：
10.1016/j.micromeso.2004.01.002
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The development of considerable mesoporosity Without destruction of the intrinsic zeolite properties has been attained in various commercial zeolites by treatment in alkaline medium. Zeolites MFI, BEA, MOR and FER appear to be susceptible to extensive mesopore formation by extraction of framework Si in the parent material (desilication). Each structure requires particular treatment conditions. Variation of treatment time and temperature enables tailoring of the mesopore size and volume leading to hierarchical porous materials. The versatility of this alkaline treatment opens new avenues to improve diffusion characteristics in zeolite-catalyzed applications. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码：29 / 34
页数：6
相关论文
共 19 条
[1]   THE DETERMINATION OF PORE VOLUME AND AREA DISTRIBUTIONS IN POROUS SUBSTANCES .1. COMPUTATIONS FROM NITROGEN ISOTHERMS [J].
BARRETT, EP ;
JOYNER, LG ;
HALENDA, PP .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (01) :373-380
[2]   Adsorption of gases in multimolecular layers [J].
Brunauer, S ;
Emmett, PH ;
Teller, E .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :309-319
[3]   Dissolution of high-silica zeolites in alkaline solutions .2. Dissolution of 'activated' silicalite-1 and ZSM-5 with different aluminum content [J].
Cizmek, A ;
Subotic, B ;
Smit, I ;
Tonejc, A ;
Aiello, R ;
Crea, F ;
Nastro, A .
MICROPOROUS MATERIALS, 1997, 8 (3-4) :159-169
[4]   State of the art and future challenges of zeolites as catalysts [J].
Corma, A .
JOURNAL OF CATALYSIS, 2003, 216 (1-2) :298-312
[5]   Pore size determination in modified micro- and mesoporous materials.: Pitfalls and limitations in gas adsorption data analysis [J].
Groen, JC ;
Peffer, LAA ;
Pérez-Ramírez, J .
MICROPOROUS AND MESOPOROUS MATERIALS, 2003, 60 (1-3) :1-17
[6]   Formation of uniform mesopores in ZSM-5 zeolite upon alkaline post-treatment? [J].
Groen, JC ;
Pérez-Ramírez, J ;
Peffer, LAA .
CHEMISTRY LETTERS, 2002, (01) :94-95
[7]  
GROEN JC, 2004, IN PRESS COLLOID S A
[8]   ORDERED MESOPOROUS MOLECULAR-SIEVES SYNTHESIZED BY A LIQUID-CRYSTAL TEMPLATE MECHANISM [J].
KRESGE, CT ;
LEONOWICZ, ME ;
ROTH, WJ ;
VARTULI, JC ;
BECK, JS .
NATURE, 1992, 359 (6397) :710-712
[9]   Modification of the micropore characteristics of the desilicated ZSM-5 zeolite by thermal treatment [J].
LeVanMao, R ;
Le, ST ;
Ohayon, D ;
Caillibot, F ;
Gelebart, L ;
Denes, G .
ZEOLITES, 1997, 19 (04) :270-278
[10]   STUDIES ON PORE SYSTEMS IN CATALYSTS .1. THE ADSORPTION OF NITROGEN - APPARATUS AND CALCULATION [J].
LIPPENS, BC ;
LINSEN, BG ;
DEBOER, JH .
JOURNAL OF CATALYSIS, 1964, 3 (01) :32-37
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