Atomic resolution Z-contrast imaging of ultradispersed catalysts

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Description

Using Z-contrast imaging in a 300 kV scanning transmission electron microscope, direct images of single metal atoms on a support material in industrial catalyst systems are formed. The simultaneously collected conventional bright-field images reveal orientational information about the support, which allows possible configurations of Pt atoms on a {gamma}-Al{sub 2}O{sub 3} support surface to be deduced. Image intensities also allow the three-dimensional configuration of a raft of Rh atoms on a {gamma}-Al{sub 2}O{sub 3} support to be determined.

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5 p.

Creation Information

Nellist, P.D. & Pennycook, S.J. November 1, 1997.

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  • Nellist, P.D. Univ. of Cambridge (United Kingdom). Cavendish Lab.
  • Pennycook, S.J. Oak Ridge National Lab., TN (United States). Solid State Div.

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Description

Using Z-contrast imaging in a 300 kV scanning transmission electron microscope, direct images of single metal atoms on a support material in industrial catalyst systems are formed. The simultaneously collected conventional bright-field images reveal orientational information about the support, which allows possible configurations of Pt atoms on a {gamma}-Al{sub 2}O{sub 3} support surface to be deduced. Image intensities also allow the three-dimensional configuration of a raft of Rh atoms on a {gamma}-Al{sub 2}O{sub 3} support to be determined.

Physical Description

5 p.

Notes

OSTI as DE98001839

Source

  • Biennal conference of the Electron Microscopy and Analysis Group of the Institute of Physics, Cambridge (United Kingdom), 2-5 Sep 1997

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  • Other: DE98001839
  • Report No.: ORNL/CP--95454
  • Report No.: CONF-970911--
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 564031
  • Archival Resource Key: ark:/67531/metadc692237

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Creation Date

  • November 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Jan. 21, 2016, 3:30 p.m.

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Nellist, P.D. & Pennycook, S.J. Atomic resolution Z-contrast imaging of ultradispersed catalysts, article, November 1, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc692237/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.