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The selective oxidation of methane into methane oxygenates such as CH3OH and HCOOH with O2 is a promising technology for direct methane conversion. This study successfully demonstrates the partial oxidation of methane over Pd−Fe/ZSM‐5 catalysts in water, where H2O2 was generated in situ from H2 and O2. A low Pd content is essential for preventing agglomeration of Pd nanoparticles, and intimate contact between Pd and Fe species is beneficial for achieving high yields of methane oxygenates. This one‐body catalyst showed better catalytic performance than that of previously reported ones, especially at low temperatures. 0.28 %Pd–0.56 %Fe/ZSM‐5 exhibited a stable catalytic performance in a continuous flow reactor. [ABSTRACT FROM AUTHOR]

The selective oxidation of methane into methane oxygenates such as CH3OH and HCOOH with O2 is a promising technology for direct methane conversion. This study successfully demonstrates the partial oxidation of methane over Pd−Fe/ZSM‐5 catalysts in water, where H2O2 was generated in situ from H2 and O2. A low Pd content is essential for preventing agglomeration of Pd nanoparticles, and intimate contact between Pd and Fe species is beneficial for achieving high yields of methane oxygenates. This one‐body catalyst showed better catalytic performance than that of previously reported ones, especially at low temperatures. 0.28 %Pd–0.56 %Fe/ZSM‐5 exhibited a stable catalytic performance in a continuous flow reactor. [ABSTRACT FROM AUTHOR]

The catalytic activity of metal oxide-supported Pt-MO x (M=Mo, W, Ce, V) catalysts was investigated for methanol reforming to hydrogen at low temperatures with varied reaction pressures in gaseous to aqueous phase regimes. The Pt-MoO x/TiO2 catalysts prepared through co-impregnation of the precursors demonstrated unprecedentedly high catalytic activities compared with the previously reported Pt-based catalysts, which showed an order of magnitude higher hydrogen production turnover rates with extremely low CO selectivities. The morphological and electrochemical characteristics of the dispersed Pt-MoO x nanoclusters were largely affected by the impregnation method and the Mo/Pt atomic ratio. The Pt-MoO x nanoclusters consisting of metallic state Pt and MoO x moieties of high site density and reducibility capable of Mo6+ to Mo5+ redox transition promoted the marked rate enhancements in methanol reforming to hydrogen at low temperatures. These highly active catalysts offer opportunities in the direct embedding of fuel processing in polymer electrolyte membrane fuel cells through the internal thermal integration of exothermic electrochemical reactions with endothermic fuel reforming for hydrogen production. [ABSTRACT FROM AUTHOR]