TY - JOUR
T1 - TiO2 nanotube-supported Cu as the catalyst for selective NO reduction with NH3
AU - Chen, Shin An
AU - Nian, Jun Nan
AU - Tsai, Chien Cheng
AU - Teng, Hsisheng
N1 - Funding Information:
This research is supported by the National Science Council of Taiwan (NSC 94-2218-E-006-042, 95-2120-M-006-001, and 95-2120-M-006-009).
PY - 2007/5
Y1 - 2007/5
N2 - Catalyst supports composed of titanate nanotubes were prepared from hydrothermal treatment on TiO2 nanoparticles in NaOH followed by HCl washing. The nanotubes exhibited well-defined TiO2 anatase phase after calcination at 400°C. The nanotube aggregates and other commercially available TiO2 nanoparticles, all with surface areas >300 m 2/g, were impregnated with Cu and examined in selective catalytic reduction of NO with NH3. In catalyst preparation, the nanotubes were found to be more thermally stable than nanoparticles, withstanding agglomeration at elevated temperatures. The Cu species supported on the nanotubes showed a higher catalytic activity than those supported on the nanoparticles. Analysis with temperature programmed reduction, X-ray photoelectron spectroscopy, and NO adsorption reflected that the layered-titanate feature of the tube wall was advantageous for even distribution of the Cu species, thus leading to the high-catalytic activity of the tubular Cu/TiO2 catalyst.
AB - Catalyst supports composed of titanate nanotubes were prepared from hydrothermal treatment on TiO2 nanoparticles in NaOH followed by HCl washing. The nanotubes exhibited well-defined TiO2 anatase phase after calcination at 400°C. The nanotube aggregates and other commercially available TiO2 nanoparticles, all with surface areas >300 m 2/g, were impregnated with Cu and examined in selective catalytic reduction of NO with NH3. In catalyst preparation, the nanotubes were found to be more thermally stable than nanoparticles, withstanding agglomeration at elevated temperatures. The Cu species supported on the nanotubes showed a higher catalytic activity than those supported on the nanoparticles. Analysis with temperature programmed reduction, X-ray photoelectron spectroscopy, and NO adsorption reflected that the layered-titanate feature of the tube wall was advantageous for even distribution of the Cu species, thus leading to the high-catalytic activity of the tubular Cu/TiO2 catalyst.
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U2 - 10.3155/1047-3289.57.5.600
DO - 10.3155/1047-3289.57.5.600
M3 - Article
C2 - 17518226
AN - SCOPUS:34249286610
VL - 57
SP - 600
EP - 605
JO - Journal of the Air and Waste Management Association
JF - Journal of the Air and Waste Management Association
SN - 1096-2247
IS - 5
ER -