In situ ultraviolet Raman spectroscopy of the reduction of chromia on alumina catalysts

Vivian S. Sullivan, S. David Jackson, Peter C. Stair

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A fluidized bed in situ cell is used to examine the chromia on alumina catalyst surface. The loading is varied from 1 to 20% chromium oxide on alumina. The structure of the surface is monitored as a function of temperature, reduction, and hydration. This is the first study to use ultraviolet excitation to study a reduced chromium catalyst surface. Reduction of the sample in hydrogen gas leads to the formation of noncrystalline Cr 3+ species. Addition of potassium to the surface reduces the size of the chromia clusters.

Original languageEnglish
Pages (from-to)352-356
Number of pages5
JournalJournal of Physical Chemistry B
Issue number1
Publication statusPublished - Jan 13 2005


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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