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The catalytic performance in heterogeneous catalytic reactions consisting of solid reactants is strongly dependent on the nanostructure of the catalysts. Metal-oxides core-shell (MOCS) nanostructures have potential to enhance the catalytic activity for soot oxidation reactions as a result of optimizing the density of active sites located at the metal-oxide interface. Here, we report a facile strategy for fabricating nanocatalysts with self-assembled Pt@CeO-rich core-shell nanoparticles (NPs) supported on three-dimensionally ordered macroporous (3DOM) CeZrOvia the in situ colloidal crystal template (CCT) method. The nanostructure-dependent activity of the catalysts for soot oxidation were investigated by means of SEM, TEM, H-TPR, XPS, O-isothermal chemisorption, soot-TPO and so on. A CeO-rich shell on a Pt core is preferentially separated from CeZrO precursors and could self-assemble to form MOCS nanostructures. 3DOM structures can enhance the contact efficiency between catalysts and solid reactants (soot). Pt@CeO-rich core-shell nanostructures can optimize the density of oxygen vacancies (O) as active sites located at the interface of Pt-CeZrO. Remarkably, 3DOM Pt@CeO-rich/CeZrO catalysts show super catalytic performance and strongly nanostructure-dependent activity for soot oxidation in the absence of NO and NO. For example, the T of the 3DOM Pt@CeO-rich/CeZrO catalyst is lowered down to 408 °C, and the reaction rate of the 3DOM Pt@CeO-rich/CeZrO catalyst (0.12 μmol g s) at 300 °C is 4 times that of the 3DOM Pt/CeZrO catalyst (0.03 μmol g s). The structures of 3DOM CeZrO-supported Pt@CeO-rich core-shell NPs are decent systems for deep oxidation of solid reactants or macromolecules, and this facile technique for synthesizing catalysts has potential to be applied to other element compositions.

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[reaction: see text] A squarate ester cascade is used to provide in one step, via the coupling of three reactants, a highly oxygenated linear triquinane product. The latter is transformed in nine steps into hypnophilin. The access route involves a combination of chlorination, reduction, dehydration, and oxidation maneuvers in the proper sequence.

New heteropolyanion-based polymeric hybrid catalysts prepared by the anion-exchange of newly task-specific designed ionic copolymers with Keggin heteropolyacids are revealed to be highly efficient, conveniently recoverable, and steadily reusable catalysts for oxidation of alcohols with H 2 O 2 .