Physicochemical Properties and Catalytic Behavior of the Molecular Sieve SSZ-70
Abstract
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), ^(29)Si 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 (CI) 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.
Additional Information
© 2010 American Chemical Society. Received November 24, 2009. Revised Manuscript Received February 9, 2010. Publication Date (Web): March 4, 2010. This work was supported by the Chevron Energy Technology Company. Electron microscopy was performed by I. Y. Chan and Tom Rea (Chevron Energy Technology Company). The NMR facility at Caltech was supported by the National Science Foundation (NSF) under Grant Number 9724240 and partially supported by the MRSEC Program of the NSF under Award Number DMR-0520565.Additional details
- Eprint ID
- 18268
- Resolver ID
- CaltechAUTHORS:20100512-143356133
- DMR-9724240
- NSF
- DMR-0520565
- NSF
- Chevron Energy Technology Company
- Created
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2010-05-14Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field