Physicochemical Properties and Catalytic Behavior of the Molecular Sieve SSZ-70

被引：41

作者：

Archer, Raymond H. ^{[1
]}

Carpenter, John R. ^{[1
]}

Hwang, Son-Jong ^{[1
]}

Burton, Allen W. ^{[2
]}

Chen, Cong-Yan ^{[2
]}

Zones, Stacey I. ^{[2
]}

Davis, Mark E. ^{[1
]}

机构：

[1] CALTECH, Pasadena, CA 91125 USA

[2] Chevron Energy Technol Co, Richmond, CA 94802 USA

来源：

CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 08期

基金：

美国国家科学基金会;

关键词：

HIGH-SILICA ZEOLITES; CONSTRAINT INDEX; MCM-22; SYSTEMS; MEDIA;

D O I：

10.1021/cm9035677

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

SSZ-70 is synthesized using 1,3-bis(isobutyl)imidazolium, 1,3-bis(cyclohexyl)imidazolium, and 1,3-bis(cycloheptyl)imidazolium structure directing agents (SDAs), and the solids obtained are characterized by powder X-ray diffraction (XRD), Si-29 magic angle spinning nuclear magnetic resonance (MAS NMR), electron microscopy, nitrogen and hydrocarbon adsorption, and thermogravimetric analyses. The physicochemical properties of SSZ-70 show that it is a new molecular sieve that has similarities to MWW-type materials The catalytic behavior of SSZ-70 is evaluated through the use of the constraint index (Cl) test. Distinct differences in the reactivity between Al-SSZ-70 and SSZ-25 (MWW) are observed and are the consequences of the structural differences between these two molecular sieves.

引用

页码：2563 / 2572

页数：10

共 22 条

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