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

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

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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
Volume109
Issue number1
DOIs
Publication statusPublished - Jan 13 2005

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Aluminum Oxide
ultraviolet spectroscopy
Ultraviolet spectroscopy
Raman spectroscopy
Alumina
aluminum oxides
catalysts
Catalysts
Chromium
chromium oxides
Hydration
Fluidized beds
hydration
Potassium
beds
Hydrogen
chromium
potassium
Gases
Oxides

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

In situ ultraviolet Raman spectroscopy of the reduction of chromia on alumina catalysts. / Sullivan, Vivian S.; Jackson, S. David; Stair, Peter C.

In: Journal of Physical Chemistry B, Vol. 109, No. 1, 13.01.2005, p. 352-356.

Research output: Contribution to journalArticle

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