Leaching studies of a highly active Cu-Pd bimetallic catalyst supported on nanostructured CeO2 for oxygen-assisted water-gas-shift reaction

Elise S. Bickford, Subramani Velu, Chunshan Song

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

Leaching of CuO by HNO3 and NH4OH was carried out to study the nature of active species involved in the oxygen-assisted water-gas shift (OWGS) reaction over a highly active CuPd/CeO2 catalyst. Since the CO conversion remained above 99% even after removing significant amount of bulk-like CuO, small CuO clusters dispersed on CeO2 surface and interacting closely with PdO species contributed significantly to the conversion of CO in the OWGS reactions. A significant decrease in the CO conversion over this sample revealed that there is a significant loss in the active species upon NH4OH treatment. The NH4OH treatment removed, in addition to the bulk-like CuO, significant amount of highly dispersed CuO that are responsible for the catalytic activity.

Original languageEnglish (US)
Pages (from-to)649-651
Number of pages3
JournalACS Division of Fuel Chemistry, Preprints
Volume49
Issue number2
StatePublished - Sep 1 2004

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Water gas shift
Catalyst supports
Leaching
Oxygen
Catalyst activity
Catalysts

All Science Journal Classification (ASJC) codes

  • Energy(all)

Cite this

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title = "Leaching studies of a highly active Cu-Pd bimetallic catalyst supported on nanostructured CeO2 for oxygen-assisted water-gas-shift reaction",
abstract = "Leaching of CuO by HNO3 and NH4OH was carried out to study the nature of active species involved in the oxygen-assisted water-gas shift (OWGS) reaction over a highly active CuPd/CeO2 catalyst. Since the CO conversion remained above 99{\%} even after removing significant amount of bulk-like CuO, small CuO clusters dispersed on CeO2 surface and interacting closely with PdO species contributed significantly to the conversion of CO in the OWGS reactions. A significant decrease in the CO conversion over this sample revealed that there is a significant loss in the active species upon NH4OH treatment. The NH4OH treatment removed, in addition to the bulk-like CuO, significant amount of highly dispersed CuO that are responsible for the catalytic activity.",
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journal = "Am Chem Soc Div Fuel Chem Prepr",
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Leaching studies of a highly active Cu-Pd bimetallic catalyst supported on nanostructured CeO2 for oxygen-assisted water-gas-shift reaction. / Bickford, Elise S.; Velu, Subramani; Song, Chunshan.

In: ACS Division of Fuel Chemistry, Preprints, Vol. 49, No. 2, 01.09.2004, p. 649-651.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Leaching studies of a highly active Cu-Pd bimetallic catalyst supported on nanostructured CeO2 for oxygen-assisted water-gas-shift reaction

AU - Bickford, Elise S.

AU - Velu, Subramani

AU - Song, Chunshan

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AB - Leaching of CuO by HNO3 and NH4OH was carried out to study the nature of active species involved in the oxygen-assisted water-gas shift (OWGS) reaction over a highly active CuPd/CeO2 catalyst. Since the CO conversion remained above 99% even after removing significant amount of bulk-like CuO, small CuO clusters dispersed on CeO2 surface and interacting closely with PdO species contributed significantly to the conversion of CO in the OWGS reactions. A significant decrease in the CO conversion over this sample revealed that there is a significant loss in the active species upon NH4OH treatment. The NH4OH treatment removed, in addition to the bulk-like CuO, significant amount of highly dispersed CuO that are responsible for the catalytic activity.

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