skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Surface characterization studies on the interaction of V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst for low temperature SCR of NO with NH{sub 3}

Abstract

This study aimed at elucidating the surface characterization of V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst to investigate the interaction of V, W and Ti species for the improvement of the catalytic activity in the SCR reaction at low-temperature. Analysis by XRD, UV–vis, PL spectra and DFT theoretical calculations, XPS, EPR and in situ DRIFT showed that WO{sub 3} could interact with TiO{sub 2} to improve the electrons transfer, and the WO{sub 3} hybridization with V{sub 2}O{sub 5} could also improve the reducibility and formation of reduced V{sub 2}O{sub 5} species for the V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst. These aspects resulted in the NO oxidation and NO{sub 3}{sup −} decomposition that were responsible for the high catalytic activity of V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst. - Graphical abstract: Interaction of V, W and Ti species improved the formation of reduced V{sub 2}O{sub 5} and O{sub 2}{sup −}, NO oxidation and NO{sub 3}{sup −} decomposition to enhance the catalytic activity of VWTi catalyst. - Highlights: • Interaction of V, W and Ti species improved the SCR reaction at low-temperature. • Hybridization between WO{sub 3} and V{sub 2}O{sub 5} improved the reducibility and reduced V{sub 2}O{sub 5} species formation of V{sub 2}O{submore » 5}–WO{sub 3}/TiO{sub 2} catalyst. • The interaction improved the NO oxidation and NO{sub 3}{sup −} decomposition over V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst.« less

Authors:
;
Publication Date:
OSTI Identifier:
22443477
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 221; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AMMONIA; CATALYSTS; DECOMPOSITION; ELECTRON SPIN RESONANCE; ELECTRON TRANSFER; HYBRIDIZATION; INTERACTIONS; NITRIC OXIDE; OXIDATION; SPECTRA; SURFACES; TITANIUM OXIDES; TUNGSTATES; TUNGSTEN OXIDES; VANADATES; VANADIUM OXIDES; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Zhang, Shule, and Zhong, Qin, E-mail: zq304@mail.njust.edu.cn. Surface characterization studies on the interaction of V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst for low temperature SCR of NO with NH{sub 3}. United States: N. p., 2015. Web. doi:10.1016/J.JSSC.2014.09.008.
Zhang, Shule, & Zhong, Qin, E-mail: zq304@mail.njust.edu.cn. Surface characterization studies on the interaction of V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst for low temperature SCR of NO with NH{sub 3}. United States. doi:10.1016/J.JSSC.2014.09.008.
Zhang, Shule, and Zhong, Qin, E-mail: zq304@mail.njust.edu.cn. Thu . "Surface characterization studies on the interaction of V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst for low temperature SCR of NO with NH{sub 3}". United States. doi:10.1016/J.JSSC.2014.09.008.
@article{osti_22443477,
title = {Surface characterization studies on the interaction of V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst for low temperature SCR of NO with NH{sub 3}},
author = {Zhang, Shule and Zhong, Qin, E-mail: zq304@mail.njust.edu.cn},
abstractNote = {This study aimed at elucidating the surface characterization of V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst to investigate the interaction of V, W and Ti species for the improvement of the catalytic activity in the SCR reaction at low-temperature. Analysis by XRD, UV–vis, PL spectra and DFT theoretical calculations, XPS, EPR and in situ DRIFT showed that WO{sub 3} could interact with TiO{sub 2} to improve the electrons transfer, and the WO{sub 3} hybridization with V{sub 2}O{sub 5} could also improve the reducibility and formation of reduced V{sub 2}O{sub 5} species for the V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst. These aspects resulted in the NO oxidation and NO{sub 3}{sup −} decomposition that were responsible for the high catalytic activity of V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst. - Graphical abstract: Interaction of V, W and Ti species improved the formation of reduced V{sub 2}O{sub 5} and O{sub 2}{sup −}, NO oxidation and NO{sub 3}{sup −} decomposition to enhance the catalytic activity of VWTi catalyst. - Highlights: • Interaction of V, W and Ti species improved the SCR reaction at low-temperature. • Hybridization between WO{sub 3} and V{sub 2}O{sub 5} improved the reducibility and reduced V{sub 2}O{sub 5} species formation of V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst. • The interaction improved the NO oxidation and NO{sub 3}{sup −} decomposition over V{sub 2}O{sub 5}–WO{sub 3}/TiO{sub 2} catalyst.},
doi = {10.1016/J.JSSC.2014.09.008},
journal = {Journal of Solid State Chemistry},
number = ,
volume = 221,
place = {United States},
year = {Thu Jan 15 00:00:00 EST 2015},
month = {Thu Jan 15 00:00:00 EST 2015}
}