TY - JOUR
T1 - Uniformly sized Pt nanoparticles dispersed at high loading on Titania nanotubes
AU - Encarnación-Gómez, C.
AU - Cortés-Jácome, M. A.
AU - Medina-Mendoza, A. K.
AU - Chávez, C. Angeles
AU - Hernández-Cruz, M. G.
AU - López, I. Cuauhtémoc
AU - Hernández-Cortéz, J. G.
AU - Salinas, E. López
AU - García, J. R.Vargas
AU - Toledo-Antonio, J. A.
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/6/25
Y1 - 2020/6/25
N2 - A range of Pt loadings (0.9–21.5 wt. %) on titania nanotubes (TNT) catalysts were prepared with a view to address metal-support interaction effects on Pt nanoparticles (size, dispersion, shape) and were prepared by a vapor-phase impregnation method using Pt(acac). The reduced catalysts were characterized by XRD, TEM, H2-TPD, CO adsorption FTIR and examined as catalysts in naphthalene hydrogenation. Pt nanoparticles have a very uniform size between 1.4–2.2 nm for Pt loadings 0.9–21.5 wt% as indicated by TEM, H2-TPD and CO-adsorption FTIR. A strong metal-support interaction between Pt and TNT support hinder Pt nanoparticles to agglomerate into larger particles, even at high Pt loadings. Both Pt edge sites and exposed surface total Pt sites are highest at 10.2 wt.% Pt loading and parallels naphthalene hydrogenation activity which peaks at this loading.
AB - A range of Pt loadings (0.9–21.5 wt. %) on titania nanotubes (TNT) catalysts were prepared with a view to address metal-support interaction effects on Pt nanoparticles (size, dispersion, shape) and were prepared by a vapor-phase impregnation method using Pt(acac). The reduced catalysts were characterized by XRD, TEM, H2-TPD, CO adsorption FTIR and examined as catalysts in naphthalene hydrogenation. Pt nanoparticles have a very uniform size between 1.4–2.2 nm for Pt loadings 0.9–21.5 wt% as indicated by TEM, H2-TPD and CO-adsorption FTIR. A strong metal-support interaction between Pt and TNT support hinder Pt nanoparticles to agglomerate into larger particles, even at high Pt loadings. Both Pt edge sites and exposed surface total Pt sites are highest at 10.2 wt.% Pt loading and parallels naphthalene hydrogenation activity which peaks at this loading.
KW - Naphthalene hydrogenation
KW - Pt nanoparticles
KW - Titania nanotubes
UR - http://www.scopus.com/inward/record.url?scp=85085476106&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2020.117631
DO - 10.1016/j.apcata.2020.117631
M3 - Artículo
SN - 0926-860X
VL - 600
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
M1 - 117631
ER -