TY - JOUR
T1 - Gold nanoparticles supported on ceria-modified mesoporous-macroporous binary metal oxides as highly active catalysts for low-temperature water-gas shift reaction
AU - Idakiev, V.
AU - Tabakova, T.
AU - Tenchev, K.
AU - Yuan, Z.Y.
AU - Ren, T.Z.
AU - Vantomme, A.
AU - Su, B.L.
PY - 2009/1/1
Y1 - 2009/1/1
N2 - New gold catalytic system prepared on ceria-modified meso-/macroporous binary metal oxide support (CeO/TiO-ZrO) and used as water-gas shift reaction (WGSR) catalyst is reported. The support was prepared through the surfactant templating technique combining with the use of mixed alkoxide solutions. Ceria-modifying additive and gold were deposited consecutively on the meso-/macroporous TiO-ZrO by deposition-precipitation method. The samples were characterized by powder X-ray diffraction, scanning and transmission electron microscopy, N adsorption analysis, and temperature-programmed reduction. The catalytic activity of the new gold-based catalysts was evaluated in WGSR and it was compared with that of gold catalysts supported on simple and binary mesoporous oxides (TiO, ZrO, and TiO-ZrO) and ceria-modified mesoporous titania support (CeO/mTiO ). A high degree of synergistic interaction between ceria and support and a positive modification of structural and catalytic properties have been achieved. The new gold catalytic system is found to be a promising catalyst for practical WGSR application.
AB - New gold catalytic system prepared on ceria-modified meso-/macroporous binary metal oxide support (CeO/TiO-ZrO) and used as water-gas shift reaction (WGSR) catalyst is reported. The support was prepared through the surfactant templating technique combining with the use of mixed alkoxide solutions. Ceria-modifying additive and gold were deposited consecutively on the meso-/macroporous TiO-ZrO by deposition-precipitation method. The samples were characterized by powder X-ray diffraction, scanning and transmission electron microscopy, N adsorption analysis, and temperature-programmed reduction. The catalytic activity of the new gold-based catalysts was evaluated in WGSR and it was compared with that of gold catalysts supported on simple and binary mesoporous oxides (TiO, ZrO, and TiO-ZrO) and ceria-modified mesoporous titania support (CeO/mTiO ). A high degree of synergistic interaction between ceria and support and a positive modification of structural and catalytic properties have been achieved. The new gold catalytic system is found to be a promising catalyst for practical WGSR application.
UR - http://www.scopus.com/inward/record.url?scp=72049132082&partnerID=8YFLogxK
U2 - 10.1007/s10853-009-3574-9
DO - 10.1007/s10853-009-3574-9
M3 - Article
AN - SCOPUS:72049132082
SN - 0022-2461
VL - 44
SP - 6637
EP - 6643
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 24
ER -