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XAFS study of the state of platinum in a sulfated zirconia catalyst (1994)

Zhao, J. ; Huffman, Gerald P. ; Davis, Burtron H.

Springer

Catalysis letters 24 (1994), S. 385-389

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ISSN: 1572-879X

Keywords: Platinum ; sulfated zirconia catalysts ; XAFS ; catalyst characterization ; Pt ; EXAFS ; XANES

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Abstract EXAFS and XANES data show that platinum, present in a Pt-SO4-ZrO2 catalyst, exists in the metallic state following calcination in air at 725°C for 2 h, and that no detectable change in the valence state of Pt occurs during use of the catalyst for hydrocarbon conversion at 150°C under hydrogen pressure. The metallic Pt is present in reasonably large crystals where the average coordination number of Pt is about 12.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00811811

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