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Synchrotron X-ray microprobe and computed microtomography for characterization of nanocatalysts

✍ Scribed by K.W. Jones; H. Feng; A. Lanzirotti; D. Mahajan

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
231 KB
Volume
241
Category
Article
ISSN
0168-583X

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✦ Synopsis

Gas-to-liquids (GTL) is a viable pathway for synthesis of clean fuels from natural gas. One of the attractive synthesis options is the Fischer-Tropsch (F-T) method using an iron catalyst to yield a broad range of hydrocarbons. We collected catalyst samples during three separate F-T runs that utilized nanophase (mean particle diameter (MPD): 3 nm and 20-80 nm) and micrometer-sized (32.5 lm) Fe 2 O 3 that served as catalyst precursors. The collected samples were characterized with micro-X-ray fluorescence and computed microtomography at the National Synchrotron Light Source (NSLS). Results found with two different measurement techniques indicated that there was heterogeneity on a spatial scale corresponding to volumes of roughly 10 3 lm 3 .

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