Výsledky vyhledávání - "ALAN W. PETERS"

Crystal Structure of Dehydrated CsZSM-5 (5.8Al): Evidence for Nonrandom Aluminum Distribution

Autor: Alan W. Peters, David H. Olson, Nazy Khosrovani, Brian H. Toby

Publikováno v: The Journal of Physical Chemistry B. 104:4844-4848

The crystal structure of dehydrated Cs5.8Al5.8Si90.2O192 has been determined by Rietveld refinement of synchrotron powder diffraction data. The structure was refined in the Pnma space group to Rwp = 2.52% and R(F2) = 5.32%. Cs ions were found with pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0dd5692927a4d575d9654be3320c77b0
https://doi.org/10.1021/jp000417r

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Simultaneous Quantification of Brønsted- and Lewis-Acid Sites in a USY Zeolite

Autor: Karl T. Mueller, Richard F. Wormsbecher, Alan W. Peters, Susan M. Mattingly, Edward F. Rakiewicz, Kevin J. Sutovich

Publikováno v: Journal of Catalysis. 183:155-158

In this report, experimental methods and calculation procedures are described for direct and simultaneous quantification of the Bronsted- and Lewis-acid site concentrations in a sample of USY zeolite. The concentrations of both types of acid sites ar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1967697195a4eb927b9b58a75906b15
https://doi.org/10.1006/jcat.1998.2379

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Characterization of Acid Sites in Zeolitic and Other Inorganic Systems Using Solid-State 31P NMR of the Probe Molecule Trimethylphosphine Oxide

Autor: Kevin J. Sutovich, Edward F. Rakiewicz, Karl T. Mueller, Alan W. Peters, Richard F. Wormsbecher

Publikováno v: The Journal of Physical Chemistry B. 102:2890-2896

The ability to determine the types and concentrations of acid sites in zeolites and fluid-catalytic cracking systems is important for an increased understanding of structure/performance relationships in these materials. Currently, a variety of therma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33fd8560985e6d144023d5eb3fe8a562
https://doi.org/10.1021/jp980808u

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Coke Formation in the Fluid Catalytic Cracking Process by Combined Analytical Techniques

Autor: and Xinjin Zhao, Alan W. Peters, George Yaluris, Edward F. Rakiewicz, Douglas C. Tomczak, Wu-Cheng Cheng, Robert H. Harding, Kuangnan Qian

Publikováno v: Energy & Fuels. 11:596-601

A combination of analytical techniques, including X-ray photoelectron spectroscopy (XPS), solid state 13C nuclear magnetic resonance (NMR) spectroscopy, and supercritical fluid extraction/mass spectrometry (SFE/MS), were used to characterize the deta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::74bda4460c0bb89985095b0b6274e9d2
https://doi.org/10.1021/ef960204u

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Solid-state NMR studies of silanol groups in mildly and highly dealuminated faujasites

Autor: Alan W. Peters, Edward F. Rakiewicz, Kevin J. Sutovich, T. P. Jarvie, T.G. Roberie, Karl T. Mueller

Publikováno v: Microporous Materials. 7:81-88

Experimental evidence for two different aluminum-bonded silanol species, SI(OSi)(OAl)2OH and Si(OSi)2(OAl)OH, in a mildly dealuminated faujasite is presented. A sample of a low unit cell size ( Si Al =4.1 ) templated Y zeolite was prepared for this s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ca19f06d36d1802a0eb5101be55b0f8d
https://doi.org/10.1016/0927-6513(96)00031-4

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The Effect of Exchange Cations on Acidity, Activity, and Selectivity of Faujasite Cracking Catalysts

Autor: R. Kumar, W.-C. Cheng, Alan W. Peters, P. Basu, K. Rajagopalan

Publikováno v: Journal of Catalysis. 143:594-600

Several studies have shown that the removal of exchanged sodium increases activity for paraffin cracking as would be expected of a solid Bronsted acid. However, it has also been observed that at low unit cell sizes the presence of low levels of sodiu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e42887a7e47c43adbb82d9856371599
https://doi.org/10.1006/jcat.1993.1302

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