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Novel ZrSn1−xCoxO4−δ catalysts for the direct decomposition of nitrous oxide (N2O) were synthesized using a co‐precipitation method. Metastable ZrSnO4 with an α‐PbO2‐type structure was used as the mother solid because of its interstitial open spaces derived from its lattice distortion that may be effective for N2O adsorption. The doping of Co2+/3+ into the ZrSnO4 lattice improved the N2O decomposition activity, likely owing to the enhancement of the redox properties and the increase in the number of oxygen vacancies. Among the prepared catalysts, Zr1.17Sn0.73Co0.10O4−δ exhibited the highest activity decomposing N2O completely decomposed at 550°C. In addition, the Zr1.17Sn0.73Co0.10O4−δ catalyst showed high durability in the presence of CO2, O2, and H2O vapor. [ABSTRACT FROM AUTHOR]

Novel catalysts of Pt/La1−xBixOF/SBA‐16 (SBA‐16: Santa Barbara Amorphous No. 16) were synthesized, and their catalytic activities for phenol decomposition in the liquid phase were investigated. Lanthanum oxyfluoride (LaOF) was selected as the promoter due to its contribution to the smooth migration of oxygen species in the lattice and the acceleration of phenol adsorption on the catalyst surface. Reducible Bi3+ ions were introduced in the LaOF lattice to provide oxygen supply ability to LaOF. Among the prepared catalysts, the highest activity was obtained for the 7 wt% Pt/16 wt% La0.99Bi0.01OF/SBA‐16 catalyst, which could remove 97% of phenol after 5 h of reaction at 80°C in an open‐air atmosphere. [ABSTRACT FROM AUTHOR]

Effective glyceric acid production from glycerol was demonstrated under mild conditions in an open-air system at room temperature in the absence of base or oxygen gas flow by employing a Pt/CeO2–ZrO2–Fe2O3/Santa Barbara Amorphous No. 16 (SBA-16) catalyst. At a low loading amount of CeO2–ZrO2–Fe2O3 (16 wt%Ce0.64Zr0.16Fe0.20O2−δ/SBA-16), the oxygen release and storage abilities and high acidity of the catalyst afforded a high glyceraldehyde yield, owing to the enhancement of the oxidation ability of the Pt activator and the acceleration of the desorption of glyceraldehyde. The increase in CeO2–ZrO2–Fe2O3 loading amount further improved the oxygen release and storage abilities and lowered the catalyst acidity induced by crystallite growth and particle aggregation. The high oxygen release and storage abilities, as well as the low acidity, contributed to the high glyceric acid yield; the highest activity for glyceric acid production was obtained for the 7 wt%Pt/40 wt%Ce0.64Zr0.16Fe0.20O2−δ/SBA-16 catalyst. The glyceric acid yield increased up to 68.2% after 10 h of reaction in atmospheric air at 30°C. [ABSTRACT FROM AUTHOR]