Synergetic effect of VO x and TeO x species in mesoporous SiO 2 on selective oxidation of propane to acrolein

Lei Shi, Xue Quan Zhu, Yuan Su, Wei Zheng Weng, Huan Feng, Xiao Dong Yi, Zhen Xian Liu, Hui Lin Wan

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)

Abstract

A mesoporous silica with incorporated vanadium (V) and tellurium (Te) (3%VTe z O x -MS; z = 0-0.33), synthesized by an evaporation-induced self-assembly route, was used as a model catalyst to investigate the synergetic effect of VO x and TeO x species on propane oxidation to acrolein. It was found that V in the catalyst was predominantly present as a highly dispersed VO 4 species, while Te existed as a highly dispersed TeO x species when the Te/V atomic ratio was below 0.2. Acrolein formation rate was positively correlated with TeO x content when both VO x and TeO x in the catalysts were in a highly dispersed state. Study of the propane oxidation pathways further indicated that highly dispersed VO 4 in close contact with highly dispersed TeO x constituted the active sites for direct oxidation of propane to acrolein. These binary sites satisfied all the required functions for the reactions, including consecutive sequence of activation of propane and propylene intermediate followed by inserting oxygen into the as-formed allylic species.

Original languageEnglish
Pages (from-to)316-326
Number of pages11
JournalJournal of Catalysis
Volume307
DOIs
StatePublished - 17 Sep 2013

Fingerprint

Acrolein
Propane
Tellurium
propane
tellurium
Oxidation
oxidation
catalysts
Catalysts
Vanadium
propylene
Silicon Dioxide
Self assembly
vanadium
Propylene
self assembly
Evaporation
Chemical activation
Silica
routes

Keywords

  • Acrolein
  • Active site
  • Mesoporous silica
  • Selective propane oxidation
  • Synergetic effect
  • Tellurium
  • Vanadium

Cite this

Shi, Lei ; Zhu, Xue Quan ; Su, Yuan ; Weng, Wei Zheng ; Feng, Huan ; Yi, Xiao Dong ; Liu, Zhen Xian ; Wan, Hui Lin. / Synergetic effect of VO x and TeO x species in mesoporous SiO 2 on selective oxidation of propane to acrolein In: Journal of Catalysis. 2013 ; Vol. 307. pp. 316-326.
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abstract = "A mesoporous silica with incorporated vanadium (V) and tellurium (Te) (3{\%}VTe z O x -MS; z = 0-0.33), synthesized by an evaporation-induced self-assembly route, was used as a model catalyst to investigate the synergetic effect of VO x and TeO x species on propane oxidation to acrolein. It was found that V in the catalyst was predominantly present as a highly dispersed VO 4 species, while Te existed as a highly dispersed TeO x species when the Te/V atomic ratio was below 0.2. Acrolein formation rate was positively correlated with TeO x content when both VO x and TeO x in the catalysts were in a highly dispersed state. Study of the propane oxidation pathways further indicated that highly dispersed VO 4 in close contact with highly dispersed TeO x constituted the active sites for direct oxidation of propane to acrolein. These binary sites satisfied all the required functions for the reactions, including consecutive sequence of activation of propane and propylene intermediate followed by inserting oxygen into the as-formed allylic species.",
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Synergetic effect of VO x and TeO x species in mesoporous SiO 2 on selective oxidation of propane to acrolein . / Shi, Lei; Zhu, Xue Quan; Su, Yuan; Weng, Wei Zheng; Feng, Huan; Yi, Xiao Dong; Liu, Zhen Xian; Wan, Hui Lin.

In: Journal of Catalysis, Vol. 307, 17.09.2013, p. 316-326.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Shi, Lei

AU - Zhu, Xue Quan

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AU - Feng, Huan

AU - Yi, Xiao Dong

AU - Liu, Zhen Xian

AU - Wan, Hui Lin

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N2 - A mesoporous silica with incorporated vanadium (V) and tellurium (Te) (3%VTe z O x -MS; z = 0-0.33), synthesized by an evaporation-induced self-assembly route, was used as a model catalyst to investigate the synergetic effect of VO x and TeO x species on propane oxidation to acrolein. It was found that V in the catalyst was predominantly present as a highly dispersed VO 4 species, while Te existed as a highly dispersed TeO x species when the Te/V atomic ratio was below 0.2. Acrolein formation rate was positively correlated with TeO x content when both VO x and TeO x in the catalysts were in a highly dispersed state. Study of the propane oxidation pathways further indicated that highly dispersed VO 4 in close contact with highly dispersed TeO x constituted the active sites for direct oxidation of propane to acrolein. These binary sites satisfied all the required functions for the reactions, including consecutive sequence of activation of propane and propylene intermediate followed by inserting oxygen into the as-formed allylic species.

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