Reasons for the Modifying Effect of Elemental Phosphorus on the Properties of Palladium Catalysts in the Hydrogenation of 2-Ethyl-9,10-anthraquinone

Key Points

• This research investigates how elemental phosphorus affects the properties of palladium catalysts during the hydrogenation of 2-ethyl-9,10-anthraquinone.
• Conducted a formal kinetic study of 2-ethyl-9,10-anthraquinone hydrogenation over 3% Pd/NZSM-5 and 3% Pd–1.0P/NZSM-5 catalysts.
• Determined the qualitative and quantitative composition of the catalysts using X-ray photoelectron spectroscopy.
• Analyzed metal dispersion and specific activity to elucidate phosphorus's modifying effects.
• Identified the qualitative and quantitative surface composition of the Pd–P catalysts.
• Evaluated the metal dispersion and specific activity, finding significant differences compared to the Pd/NZSM-5 catalysts.
• Elucidated the primary reasons for phosphorus's modifying effect on palladium properties.