TY - JOUR
T1 - Composite catalytic materials for steam reforming of methane and oxygenates
T2 - Combinatorial synthesis, characterization and performance
AU - Sadykov, Vladislav
AU - Mezentseva, Natalia
AU - Alikina, Galina
AU - Bunina, Rimma
AU - Rogov, Vladimir
AU - Krieger, Tamara
AU - Belochapkine, Sergey
AU - Ross, Julian
PY - 2009/7/15
Y1 - 2009/7/15
N2 - Using robotic workstation, a number of composite materials based on NiO/yttria-doped zirconia (YSZ) cermet promoted with doped ceria-zirconia fluorite-like mixed oxides and Ru were synthesized. The materials were characterized by XRD, BET, TEM, H2 TPR, and their catalytic performance was estimated in the reactions of methane, ethanol and acetone steam reforming at short (10-36 ms) contact times. The amount of deposited carbonaceous species was estimated by temperature-programmed oxidation. Complex fluorite-like oxides as promoters minimize coking even in stoichiometric fuel/steam feeds. Promotion by small (<1 wt.%) amount of Ru further decreases coking and facilitates activation of such molecules as CH4 and acetone, thus ensuring a high level of performance in the intermediate temperature (500-600 °C) range. Factors controlling performance of these composites in steam reforming reactions such as lattice oxygen mobility in complex oxide promoters controlled by their chemical composition, strong interaction between components in composites, state and reactivity of supported Ru were assessed.
AB - Using robotic workstation, a number of composite materials based on NiO/yttria-doped zirconia (YSZ) cermet promoted with doped ceria-zirconia fluorite-like mixed oxides and Ru were synthesized. The materials were characterized by XRD, BET, TEM, H2 TPR, and their catalytic performance was estimated in the reactions of methane, ethanol and acetone steam reforming at short (10-36 ms) contact times. The amount of deposited carbonaceous species was estimated by temperature-programmed oxidation. Complex fluorite-like oxides as promoters minimize coking even in stoichiometric fuel/steam feeds. Promotion by small (<1 wt.%) amount of Ru further decreases coking and facilitates activation of such molecules as CH4 and acetone, thus ensuring a high level of performance in the intermediate temperature (500-600 °C) range. Factors controlling performance of these composites in steam reforming reactions such as lattice oxygen mobility in complex oxide promoters controlled by their chemical composition, strong interaction between components in composites, state and reactivity of supported Ru were assessed.
KW - Acetone
KW - CH
KW - Composites
KW - Doped ceria-zirconia oxides
KW - Ethanol
KW - Ni-YSZ
KW - Ru
KW - Steam reforming
UR - http://www.scopus.com/inward/record.url?scp=66849087834&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2008.04.034
DO - 10.1016/j.cattod.2008.04.034
M3 - Article
AN - SCOPUS:66849087834
SN - 0920-5861
VL - 145
SP - 127
EP - 137
JO - Catalysis Today
JF - Catalysis Today
IS - 1-2
ER -