Publications by authors named "Youcheng Feng"
In this work, a series of mesoporous yolk-shell silica spheres (YS-) with tunable yolk size and shell thickness were synthesized via the incubation method in water. Following amination and Pd loading treatment on YS-, a series of catalysts Pd-YS--NH were obtained successfully and applied to formic acid (FA) dehydrogenation for hydrogen (H) generation. The optimal catalyst Pd-YS-6-NH, which has an appropriate yolk size and shell thickness, the largest specific surface area, and pore volume, as well as the smallest Pd nanoparticles (NPs), exhibits dehydrogenation performance far superior to that of other reference catalysts.
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- Researchers developed a novel catalyst made of ultrasmall palladium-iridium (PdIr) nanoparticles supported on special silica structures to enhance formic acid (FA) dehydrogenation, which is crucial for using FA as a hydrogen carrier.
- The optimized PdIr catalyst demonstrated an impressive turnover frequency (TOF) of 5818 h at 50°C, showing complete FA conversion and high hydrogen selectivity, outperforming many existing catalysts.
- The study identifies the cleavage of the carbon-hydrogen (CH) bond as the slowest step in the reaction and highlights the importance of the catalyst's unique structure and the interaction between the metal nanoparticles and the silica support in improving performance.