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Showing 1–8 of 8 results
Advanced filters: Author: Jan-Dierk Grunwaldt Clear advanced filters

  • Alternative fuels such as biomethane are attractive, although their combustion generates pollutants such as formaldehyde that impair conventional abatement technologies. This study elucidates the impact of HCHO during the selective catalytic reduction of NOx over Cu-SSZ-13 catalysts, revealing important structural and mechanistic aspects.

    • Simon Barth
    • Deniz Zengel
    • Maria Casapu
    ResearchOpen Access
    Nature Catalysis
    Volume: 8, P: 804-821

  • Promoters are able to modulate the performance of catalysts for a given process, but this can be done through various mechanisms. Here the role of Mn as a promoter on Fe-based catalysts for CO2 hydrogenation to olefins is comprehensively investigated via spectroscopic and kinetic analyses. The promoter induces a restructuring of the catalyst surface, balancing the strength of the adsorption of reactants and intermediates.

    • Qingxin Yang
    • Elizaveta A. Fedorova
    • Evgenii V. Kondratenko
    ResearchOpen Access
    Nature Catalysis
    Volume: 8, P: 595-606

  • Understanding of the direct methane conversion mechanism is essential for further development of efficient catalysts. Here, authors demonstrate a general methyl radical chemistry for metal single site catalysis regardless of the support (either zeolite or SiO2) in non-oxidative methane activation.

    • Xin Huang
    • Daniel Eggart
    • Xinhe Bao
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-9

  • Obtaining spatially resolved spectroscopic information for catalysts under working conditions remains challenging. Here, an approach that combines X-ray absorption spectroscopy with microtomography is introduced and showcased for the selective catalytic reduction of NOx with ammonia over a Cu-SSZ-13 washcoated monolith catalyst.

    • Johannes Becher
    • Dario Ferreira Sanchez
    • Thomas L. Sheppard
    Research
    Nature Catalysis
    Volume: 4, P: 46-53

  • Single-atom catalysts hold great promise for process optimization by reducing metal utilization. However, their structure–activity properties remain elusive. Here, a combination of operando techniques and density functional theory analysis is used to capture the evolution of single platinum atoms on CeO2 during CO, C3H6 and CH4 oxidation.

    • Florian Maurer
    • Jelena Jelic
    • Jan-Dierk Grunwaldt
    Research
    Nature Catalysis
    Volume: 3, P: 824-833

  • Inexpensive iron catalysts often exhibit low activity in ammonia decomposition due to a strong iron-nitrogen binding energy. Here the authors demonstrate that combining iron with cobalt to form a Fe-Co bimetallic catalyst overcomes this limitation, presenting a promising solution for enhancing ammonia decomposition efficiency.

    • Shilong Chen
    • Jelena Jelic
    • Malte Behrens
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-11

  • Propene is obtained through propane dehydrogenation using catalysts that are toxic, expensive or demanding to regenerate with ecologically harmful compounds, but the ZnO-based alternative reported here is cheap, clean and scalable.

    • Dan Zhao
    • Xinxin Tian
    • Evgenii V. Kondratenko
    ResearchOpen Access
    Nature
    Volume: 599, P: 234-238