Dual nanoparticle/substrate control of catalytic dehydrogenation

Albina Y. Borisevich, Sanwu Wang, Sergey Rashkeev, Michael Glazoff, Stephen J. Pennycook, Sokrates T. Pantelides

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Several experimental techniques and first-principles quantum-mechanical calculations were combined to provide atomic-scale understanding of alumina/chromia systems, the oxidative dehydrogenation of alkanes, and the nanoparticle-substrate interactions that control catalytic activity. Direct imaging was used by Z-contrast aberration-corrected scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS) coupled with extended X-ray absorption fine structure (EXAFS) measurements. The EELS spectra clearly showed the presence of Cr and no discernible difference in Cr concentrations between different areas of the sample. Density functional calculations were used to explore the catalytic dehydrogenation of alkanes at the atomic level. Z-contrast STEM and EELS studies have demonstrated that while Cr is segregated into patches on γ-Al2O3 surface, it is distributed uniformly on η-Al203.

Original languageEnglish
Pages (from-to)2129-2133
Number of pages5
JournalAdvanced Materials
Volume19
Issue number16
DOIs
Publication statusPublished - 17 Aug 2007
Externally publishedYes

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Electron energy loss spectroscopy
Dehydrogenation
Alkanes
Nanoparticles
Paraffins
Substrates
Transmission electron microscopy
Scanning electron microscopy
Aluminum Oxide
X ray absorption
Aberrations
Density functional theory
Catalyst activity
Alumina
Imaging techniques

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Borisevich, A. Y., Wang, S., Rashkeev, S., Glazoff, M., Pennycook, S. J., & Pantelides, S. T. (2007). Dual nanoparticle/substrate control of catalytic dehydrogenation. Advanced Materials, 19(16), 2129-2133. https://doi.org/10.1002/adma.200601618

Dual nanoparticle/substrate control of catalytic dehydrogenation. / Borisevich, Albina Y.; Wang, Sanwu; Rashkeev, Sergey; Glazoff, Michael; Pennycook, Stephen J.; Pantelides, Sokrates T.

In: Advanced Materials, Vol. 19, No. 16, 17.08.2007, p. 2129-2133.

Research output: Contribution to journalArticle

Borisevich, AY, Wang, S, Rashkeev, S, Glazoff, M, Pennycook, SJ & Pantelides, ST 2007, 'Dual nanoparticle/substrate control of catalytic dehydrogenation', Advanced Materials, vol. 19, no. 16, pp. 2129-2133. https://doi.org/10.1002/adma.200601618
Borisevich AY, Wang S, Rashkeev S, Glazoff M, Pennycook SJ, Pantelides ST. Dual nanoparticle/substrate control of catalytic dehydrogenation. Advanced Materials. 2007 Aug 17;19(16):2129-2133. https://doi.org/10.1002/adma.200601618
Borisevich, Albina Y. ; Wang, Sanwu ; Rashkeev, Sergey ; Glazoff, Michael ; Pennycook, Stephen J. ; Pantelides, Sokrates T. / Dual nanoparticle/substrate control of catalytic dehydrogenation. In: Advanced Materials. 2007 ; Vol. 19, No. 16. pp. 2129-2133.
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