Effect of the sol-gel conditions on the morphology and SCR performance of electrospun V-W-TiO2 catalysts

Debora Marani*, Rafael Hubert Silva, Apiwat Dankeaw, Mads Gudik-Sørensen, Kion Norrman, Vincenzo Esposito

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

V-W-TiO2 catalysts are prepared as nanofibers for the removal of the NOx in exhausts via the NH3 Selective Catalytic Reduction (SCR) method. By combining electrospinning and soft chemistry, materials are processed as nanofibers with the catalytic components (e. g. V2O5-WO3) incorporated as dopants into the supporting anatase phase (e. g TiO2). The conditions for the chemical synthesis were investigated by varying the molar ratios between titanium alkoxide (tetraisopropoxide) and the chelating agent (acetic acid). Catalytic characterization clearly shows a impact of the starting precursor coordination on the final nanostructure, and thus on the catalytic performances. Superior NOx conversion are obtained for nanofibers formed by high coordination level, i.e. [Acetic acid]/[Ti cation] > 2, with high stability and control over the processing route.
Original languageEnglish
JournalJournal of Physics and Chemistry of Solids
Volume118
Pages (from-to)255-261
ISSN0022-3697
DOIs
Publication statusPublished - 2018

Keywords

  • Nanofibers
  • Electrospinning
  • Titania
  • SCR

Cite this

Marani, Debora ; Silva, Rafael Hubert ; Dankeaw, Apiwat ; Gudik-Sørensen, Mads ; Norrman, Kion ; Esposito, Vincenzo. / Effect of the sol-gel conditions on the morphology and SCR performance of electrospun V-W-TiO2 catalysts. In: Journal of Physics and Chemistry of Solids. 2018 ; Vol. 118. pp. 255-261.
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title = "Effect of the sol-gel conditions on the morphology and SCR performance of electrospun V-W-TiO2 catalysts",
abstract = "V-W-TiO2 catalysts are prepared as nanofibers for the removal of the NOx in exhausts via the NH3 Selective Catalytic Reduction (SCR) method. By combining electrospinning and soft chemistry, materials are processed as nanofibers with the catalytic components (e. g. V2O5-WO3) incorporated as dopants into the supporting anatase phase (e. g TiO2). The conditions for the chemical synthesis were investigated by varying the molar ratios between titanium alkoxide (tetraisopropoxide) and the chelating agent (acetic acid). Catalytic characterization clearly shows a impact of the starting precursor coordination on the final nanostructure, and thus on the catalytic performances. Superior NOx conversion are obtained for nanofibers formed by high coordination level, i.e. [Acetic acid]/[Ti cation] > 2, with high stability and control over the processing route.",
keywords = "Nanofibers, Electrospinning, Titania, SCR",
author = "Debora Marani and Silva, {Rafael Hubert} and Apiwat Dankeaw and Mads Gudik-S{\o}rensen and Kion Norrman and Vincenzo Esposito",
year = "2018",
doi = "10.1016/j.jpcs.2018.03.018",
language = "English",
volume = "118",
pages = "255--261",
journal = "Journal of Physics and Chemistry of Solids",
issn = "0022-3697",
publisher = "Pergamon Press",

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Effect of the sol-gel conditions on the morphology and SCR performance of electrospun V-W-TiO2 catalysts. / Marani, Debora; Silva, Rafael Hubert ; Dankeaw, Apiwat; Gudik-Sørensen, Mads; Norrman, Kion; Esposito, Vincenzo.

In: Journal of Physics and Chemistry of Solids, Vol. 118, 2018, p. 255-261.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Effect of the sol-gel conditions on the morphology and SCR performance of electrospun V-W-TiO2 catalysts

AU - Marani, Debora

AU - Silva, Rafael Hubert

AU - Dankeaw, Apiwat

AU - Gudik-Sørensen, Mads

AU - Norrman, Kion

AU - Esposito, Vincenzo

PY - 2018

Y1 - 2018

N2 - V-W-TiO2 catalysts are prepared as nanofibers for the removal of the NOx in exhausts via the NH3 Selective Catalytic Reduction (SCR) method. By combining electrospinning and soft chemistry, materials are processed as nanofibers with the catalytic components (e. g. V2O5-WO3) incorporated as dopants into the supporting anatase phase (e. g TiO2). The conditions for the chemical synthesis were investigated by varying the molar ratios between titanium alkoxide (tetraisopropoxide) and the chelating agent (acetic acid). Catalytic characterization clearly shows a impact of the starting precursor coordination on the final nanostructure, and thus on the catalytic performances. Superior NOx conversion are obtained for nanofibers formed by high coordination level, i.e. [Acetic acid]/[Ti cation] > 2, with high stability and control over the processing route.

AB - V-W-TiO2 catalysts are prepared as nanofibers for the removal of the NOx in exhausts via the NH3 Selective Catalytic Reduction (SCR) method. By combining electrospinning and soft chemistry, materials are processed as nanofibers with the catalytic components (e. g. V2O5-WO3) incorporated as dopants into the supporting anatase phase (e. g TiO2). The conditions for the chemical synthesis were investigated by varying the molar ratios between titanium alkoxide (tetraisopropoxide) and the chelating agent (acetic acid). Catalytic characterization clearly shows a impact of the starting precursor coordination on the final nanostructure, and thus on the catalytic performances. Superior NOx conversion are obtained for nanofibers formed by high coordination level, i.e. [Acetic acid]/[Ti cation] > 2, with high stability and control over the processing route.

KW - Nanofibers

KW - Electrospinning

KW - Titania

KW - SCR

U2 - 10.1016/j.jpcs.2018.03.018

DO - 10.1016/j.jpcs.2018.03.018

M3 - Journal article

VL - 118

SP - 255

EP - 261

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

ER -