Study the structure of V/MGO catalyst for H 2 wet oxidation

Eun Ku Lee, Yong Gun Shul, Oh Shim Joo, Kwang Deong Jung

Research output: Contribution to journalConference article

Abstract

The effect of vanadium loading on the activity of V/MgO catalysts was studied for the wet oxidation of H 2S to sulfur. The H 2S removal capacity with respect to vanadia content increased ≤ 6 wt %, and decreased with further increase in vanadia loading. The surface coverage calculation of V 2O 5 suggested that a vanadia addition up to a monomolecular layer on MgO support increased the H 2S removal capacity of V/MgO, but the further increase of VO x surface coverage rather decreased. Raman spectroscopy showed that the small domains of Mg 3(V0 4) 2 could be present on V/MgO with lt; 6 wt % V loading. TPR experiments showed that V/MgO catalysts with the loading below 6 wt % V were more reducible than those above 6 wt % V. The H 2S oxidation with V/MgO proceeded from the redox mechanism and V 3+ formation, deep reduction, was responsible for the deactivation of V/MgO. This is an abstract of a paper presented at the 227th ACS National Meeting (Anaheim, CA 3/28/2004-4/1/2004).

Original languageEnglish
JournalACS National Meeting Book of Abstracts
Volume227
Issue number2
Publication statusPublished - 2004 Jun 1
Event227th ACS National Meeting Abstracts of Papers - Anaheim, CA., United States
Duration: 2004 Mar 282004 Apr 1

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Oxidation
Catalysts
Vanadium
Sulfur
Raman spectroscopy
Monolayers
Experiments
Oxidation-Reduction

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Lee, Eun Ku ; Shul, Yong Gun ; Joo, Oh Shim ; Jung, Kwang Deong. / Study the structure of V/MGO catalyst for H 2 wet oxidation. In: ACS National Meeting Book of Abstracts. 2004 ; Vol. 227, No. 2.
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abstract = "The effect of vanadium loading on the activity of V/MgO catalysts was studied for the wet oxidation of H 2S to sulfur. The H 2S removal capacity with respect to vanadia content increased ≤ 6 wt {\%}, and decreased with further increase in vanadia loading. The surface coverage calculation of V 2O 5 suggested that a vanadia addition up to a monomolecular layer on MgO support increased the H 2S removal capacity of V/MgO, but the further increase of VO x surface coverage rather decreased. Raman spectroscopy showed that the small domains of Mg 3(V0 4) 2 could be present on V/MgO with lt; 6 wt {\%} V loading. TPR experiments showed that V/MgO catalysts with the loading below 6 wt {\%} V were more reducible than those above 6 wt {\%} V. The H 2S oxidation with V/MgO proceeded from the redox mechanism and V 3+ formation, deep reduction, was responsible for the deactivation of V/MgO. This is an abstract of a paper presented at the 227th ACS National Meeting (Anaheim, CA 3/28/2004-4/1/2004).",
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Study the structure of V/MGO catalyst for H 2 wet oxidation. / Lee, Eun Ku; Shul, Yong Gun; Joo, Oh Shim; Jung, Kwang Deong.

In: ACS National Meeting Book of Abstracts, Vol. 227, No. 2, 01.06.2004.

Research output: Contribution to journalConference article

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T1 - Study the structure of V/MGO catalyst for H 2 wet oxidation

AU - Lee, Eun Ku

AU - Shul, Yong Gun

AU - Joo, Oh Shim

AU - Jung, Kwang Deong

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N2 - The effect of vanadium loading on the activity of V/MgO catalysts was studied for the wet oxidation of H 2S to sulfur. The H 2S removal capacity with respect to vanadia content increased ≤ 6 wt %, and decreased with further increase in vanadia loading. The surface coverage calculation of V 2O 5 suggested that a vanadia addition up to a monomolecular layer on MgO support increased the H 2S removal capacity of V/MgO, but the further increase of VO x surface coverage rather decreased. Raman spectroscopy showed that the small domains of Mg 3(V0 4) 2 could be present on V/MgO with lt; 6 wt % V loading. TPR experiments showed that V/MgO catalysts with the loading below 6 wt % V were more reducible than those above 6 wt % V. The H 2S oxidation with V/MgO proceeded from the redox mechanism and V 3+ formation, deep reduction, was responsible for the deactivation of V/MgO. This is an abstract of a paper presented at the 227th ACS National Meeting (Anaheim, CA 3/28/2004-4/1/2004).

AB - The effect of vanadium loading on the activity of V/MgO catalysts was studied for the wet oxidation of H 2S to sulfur. The H 2S removal capacity with respect to vanadia content increased ≤ 6 wt %, and decreased with further increase in vanadia loading. The surface coverage calculation of V 2O 5 suggested that a vanadia addition up to a monomolecular layer on MgO support increased the H 2S removal capacity of V/MgO, but the further increase of VO x surface coverage rather decreased. Raman spectroscopy showed that the small domains of Mg 3(V0 4) 2 could be present on V/MgO with lt; 6 wt % V loading. TPR experiments showed that V/MgO catalysts with the loading below 6 wt % V were more reducible than those above 6 wt % V. The H 2S oxidation with V/MgO proceeded from the redox mechanism and V 3+ formation, deep reduction, was responsible for the deactivation of V/MgO. This is an abstract of a paper presented at the 227th ACS National Meeting (Anaheim, CA 3/28/2004-4/1/2004).

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