ArticleChemSusChem2025
Structure-Activity Relationships in RuCs/MgO Catalysts During Ammonia Synthesis.
Article in ChemSusChem, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
In the industrial synthesis of ammonia, a combination of high temperature and pressure is required to achieve a reasonable educt conversion. Efforts have been undertaken to lower these requirements by utilizing ruthenium-based catalysts promoted with alkali metals, which have the potential to lower the energy barrier associated with the dissociative adsorption of nitrogen. In this work, the structure of Ru and Cs species is probed in impregnated RuCs/MgO and Ru/MgO catalysts by operando X-ray absorption spectroscopy during reduction and ammonia synthesis at pressures up to 19 bar(a) in pure gas feed as well as the deactivation behavior with unpure feed containing 25 ppm oxygen. Interconversion of three types of Ru species, including RuO
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