A Ru/La_0.5Ce_0.5O_1.75catalyst pre-reduced at an unusually high temperature (650 °C) catalyses ammonia synthesis a rate under mild conditions.

To mitigate global problems related to energy and warming, it is helpful develop an ammonia synthesis process using catalysts that are highly active under mild conditions. Here we show the activity per weight of catalyst Ru/Ba/LaCeOx, prereduced at 700 °C, highest among reported oxide-supported Ru catalysts, 52.3 mmol h–1 gcat–1 350 1.0 MPa. The turnover frequency Ru/Ba/LaCeOx °C was more than 8 times Cs+/Ru/MgO, which a well-known used as benchmark; furthermore, hydrogen poisoning, typical...

To exploit the use of hydrogen as a source sustainable energy, development an efficient process for synthesizing energy carrier such ammonia under mild conditions will be necessary. Here, we show that Ru/La0.5Pr0.5O1.75 prereduced at extraordinary high temperature 650 °C catalyzes NH3-synthesis rates conditions. At 400 1.0 MPa, synthesis rate was comparable with most active oxide-supported Ru catalysts. Kinetic analysis revealed poisoning, which is typical drawback catalysts Cs+/Ru/MgO,...

The combination of n-type TiO₂ and p-type BiOCl photooxidizing water photoreducing the formed O₂ back to water, respectively, in acidic solution enabled a sustainable photofuel cell utilizing natural light.

Photofuel cells comprising WO₃ and layered double hydroxide converted gaseous CO₂ into methanol whereas hydrogen was formed in the aqueous phase.

A photofuel cell comprising two photocatalysts TiO2 and Ag-TiO2 is demonstrated. The open circuit voltage, short current, maximum electric power of the PFC were 1.59 V, 74 μA, 14 μW, respectively. electron flow was rectified due to Schottky barrier between Ag nanoparticles.

Ammonia has received attention as a hydrogen carrier for energy use, and although ammonia decomposition can produce at high rate, there is currently no simple process decomposing that easily rapidly initiated any time without an input of external energy. Here, we report the discovery initiating sustaining production from heating catalyst externally. The oxidative to rate was repeatedly triggered ambient temperature (∼25 °C) immediately after NH3 O2 were supplied Ru/Ce0.5Zr0.5O2 had been...

Abstract Pr 2 O 3 supported Ru nanolayers and nanoparticles catalysts were examined for the synthesis of quinolines. The nanolayer was most active catalyst showed a broad substrate scope. Structure‐activity relationship demonstrated that metallic state morphology as well basic site indispensable factors this catalytic system.

Ammonia is a potential carrier of hydrogen as zero‐emission fuel. Herein, the effects calcination and reduction temperatures on ammonia‐synthesis activity Ru/La 0.5 Ce O 1.75 are investigated under mild synthesis conditions (≤400 °C, ≤3 MPa), which preferred for storage an energy source. The highest catalytic obtained after support at 700 °C catalyst 650 °C. Calcination using higher temperature than that used results in induction strong metal–support interaction (SMSI) effect. This...

Ruthenium catalysts may allow for realization of renewable energy-based ammonia synthesis processes using mild reaction conditions (<400 °C, <10 MPa). However, ruthenium is relatively rare and therefore expensive. Here, we report a Co nanoparticle catalyst loaded on basic Ba/La2O3 support prereduced at 700 °C (Co/Ba/La2O3_700red) that showed higher activity 350 1.0-3.0 MPa than two benchmark Ru catalysts, Cs+/Ru/MgO Ru/CeO2. The rate the 1.0 (19.3 mmol h-1 g-1) was 8.0 times...

Journal Article CLASSIFICATION OF CATALASE-POISONS BASED ON OBSERVATIONS THEIR INTERACTION WITH CATALASE. II Get access Y. OGURA, OGURA Search for other works by this author on: Oxford Academic PubMed Google Scholar TONOMURA, TONOMURA †Research Institute Catalyser, Hokkaido UniversitySapporo S. HINO, HINO H. TAMIYA **Botanical Institute, Faculty of Science, University Tokyo, and the Tokugawa Biological Research The Biochemistry, Volume 37, Issue 2, August 1950, Pages 179–204,...

A quantitative understanding of the Li distribution inside all-solid-state Li-ion batteries is important for improving performance batteries. We constructed a time-of-flight (TOF) elastic recoil detection analysis (ERDA) system operando measurements thin-film The TOF-ERDA measurement provides elementally resolved spectra with depth resolution much higher than that conventional stopper-foil ERDA. profiles in cathode film and solid electrolyte were obtained quantitatively to 100 nm using 9-MeV...

We reported a new PhotoFuel Cell (PFC) comprising two photocatalysts for use of acidic water as recyclable medium. Nitrogen and oxygen flow was required in the photoanode photocathode, respectively. In this study, we developed gas-circulating PFC that needs no gas supply from outside. PFC, reverse reaction oxidation at anode prevented by photogenerated O<sub>2<sub/> to cathode inside PFC. The accommodated an organic solvent layer over aqueous electrolyte anode, also vent hole upper part...

Mechanistic studies of the SmCl3-Sm system in water were carried out. The addition N,N-dimethylacetoamide (DMA) enhanced reactivity one-electron reduction. According to ultraviolet–visible (UV-vis) analysis, DMA was found accelerate proportionation SmCl3 and Sm.

Uniform irreversibility lines (ILs) and the morphology of nanorods independent growth temperature (Ts) were demonstrated by controlling chemical compositions in superconducting REBa2Cu3Oy (RE123) matrix. Tailoring composition ratios Y Er an RE123 matrix using Ba–Nb–O-doped Y123 Er123 films with opposite Ts-dependent ILs, almost constant ILs a matching field ∼4 T, linear achieved wide Ts region 40 °C (Ts=850–890 °C). The present study provides novel strategy for doping RE123-coated conductors...

Light irradiation from the rear side of photoelectrodes suppresses electron diffusion overpotential and leakage current resulting in 1.91 V per cell.

Addition of DMA enhances the reactivity one-electron reduction in SmCl3—Sm system water.

We report optimization of substrate temperature (Ts) regions for achievement the bi-axially oriented growth without a-axis domains, critical current properties and crystallinities in REBa2Cu3Oy (RE123) films (RE= Y Er) grown by pulsed laser deposition using a Nd:YAG laser. Appropriate Ts achieving both high self-field density Y123 Er123 were found to be similar. In case Y123, infield densities inplane lattice parameters lower region slightly changed compared with those at higher region. Our...