Characterization and reactivity of Nb 2O 5 supported Ru catalysts
A series of Ru/Nb 2O 5 catalysts with Ru loadings from 0.5–7.18 wt.% were prepared and characterized by X-ray diffraction (XRD), temperature programmed reduction (TPR), temperature programmed desorption (TPD) of hydrogen and CO chemisorption measurements. XRD patterns reveal the presence of RuO 2 fr...
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Published in | Catalysis communications Vol. 10; no. 5; pp. 459 - 463 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
2009
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Subjects | |
Online Access | Get full text |
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Summary: | A series of Ru/Nb
2O
5 catalysts with Ru loadings from 0.5–7.18
wt.% were prepared and characterized by X-ray diffraction (XRD), temperature programmed reduction (TPR), temperature programmed desorption (TPD) of hydrogen and CO chemisorption measurements. XRD patterns reveal the presence of RuO
2 from 3.0
wt.% Ru loading. TPR profiles show only one peak due to reduction of RuO
2 to Ru
0. The H
2-TPD exhibits two peaks, one due to desorption of hydrogen from Ru metal and another due to spill over from metal to the support. The catalytic properties were evaluated for the vapor-phase hydrodechlorination of 1,2,4-trichlorobenzene and related to Ru dispersion. |
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ISSN: | 1566-7367 1873-3905 |
DOI: | 10.1016/j.catcom.2008.10.006 |