Delamination of Layered Zeolite Precursors under Mild Conditions: Synthesis of UCB-1 via Fluoride/Chloride Anion-Promoted Exfoliation

被引：104

作者：

Ogino, Isao ^{[1
]}

Nigra, Michael M. ^{[1
]}

Hwang, Son-Jong ^{[3
]}

Ha, Jeong-Myeong ^{[1
]}

Rea, Thomas ^{[2
]}

Zones, Stacey I. ^{[1
,2
]}

Katz, Alexander ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA

[2] Chevron Energy Technol Co, Richmond, CA 94804 USA

[3] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 10期

基金：

美国国家科学基金会;

关键词：

HIGH-SILICA ZEOLITES; 5-COORDINATE SILICON; CATALYTIC-ACTIVITY; MCM-22; ITQ-2; SPECIFICITY; ADSORPTION; CORROSION; SYSTEMS;

D O I：

10.1021/ja111147z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

New material UCB-1 is synthesized via the delamination of zeolite precursor MCM-22 (P) at pH 9 using an aqueous solution of cetyltrimethylammonium bromide, tetrabutylammonium fluoride, and tetrabutylammonium chloride at 353 K. Characterization by powder X-ray diffraction, transmission electron microscopy, and nitrogen physisorption at 77 K indicates the same degree of delamination in UCB-1 as previously reported for delaminated zeolite precursors, which require a pH of greater than 13.5 and sonication in order to achieve exfoliation. UCB-1 consists of a high degree of structural integrity via Si-29 MAS NMR and Fourier transform infrared spectroscopies, and no detectable formation of amorphous silica phase via transmission electron microscopy. Porosimetry measurements demonstrate a lack of hysteresis in the N-2 adsorption/desorption isotherms and macroporosity in UCB-1. The new method is generalizable to a variety of Si:Al ratios and leads to delaminated zeolite precursor materials lacking amorphization.

引用

页码：3288 / 3291

页数：4

共 28 条

[1] Alkylation of biphenyl with propylene using MCM-22 and ITQ-2 zeolites [J].

Aguilar, J. ;

Pergher, S. B. C. ;

Detoni, C. ;

Corma, A. ;

Melo, F. V. ;

Sastre, E. .

CATALYSIS TODAY, 2008, 133 (1-4) :667-672

[2] STRUCTURE OF THETA-1, THE 1ST UNIDIMENSIONAL MEDIUM-PORE HIGH-SILICA ZEOLITE [J].

BARRI, SAI ;

SMITH, GW ;

WHITE, D ;

YOUNG, D .

NATURE, 1984, 312 (5994) :533-534

[3] Nanosized and delayered zeolitic materials for the liquid-phase Beckmann rearrangement of cyclododecanone oxime [J].

Botella, P. ;

Corma, A. ;

Iborra, S. ;

Monton, R. ;

Rodriguez, I. ;

Costa, V. .

JOURNAL OF CATALYSIS, 2007, 250 (01) :161-170

[4] Spontaneous nucleation and growth of pure silica zeolite-beta free of connectivity defects [J].

Camblor, MA ;

Corma, A ;

Valencia, S .

CHEMICAL COMMUNICATIONS, 1996, (20) :2365-2366

[5] High silica zeolites with three-dimensional systems of large pore channels [J].

Camblor, MA ;

Barrett, PA ;

Díaz-Cabañas, MJ ;

Villaescusa, LA ;

Puche, M ;

Boix, T ;

Pérez, E ;

Koller, H .

MICROPOROUS AND MESOPOROUS MATERIALS, 2001, 48 (1-3) :11-22

[6] Adsorption and catalytic properties of MCM-22: The influence of zeolite structure [J].

Corma, A ;

Corell, C ;

PerezPariente, J ;

Guil, JM ;

GuilLopez, R ;

Nicolopoulos, S ;

Calbet, JG ;

ValletRegi, M .

ZEOLITES, 1996, 16 (01) :7-14

[7] ITQ-18 a new delaminated stable zeolite [J].

Corma, A ;

Fornés, V ;

Díaz, U .

CHEMICAL COMMUNICATIONS, 2001, (24) :2642-2643

[8] High activity of layered zeolite ITQ-2 as catalyst for the hydroxyalkylation of 2-methoxynaphthalene and naphthalene with paraformaldehyde.: Comparison of its performance with that of conventional zeolites or mesoporous Al/MCM-41 [J].

Corma, A ;

García, H ;

Miralles, J .

MICROPOROUS AND MESOPOROUS MATERIALS, 2001, 43 (02) :161-169

[9]

Corma A, 2000, ANGEW CHEM INT EDIT, V39, P1499, DOI 10.1002/(SICI)1521-3773(20000417)39:8<1499::AID-ANIE1499>3.0.CO

[10]

2-0

← 1 2 3 →