Abstract
It is highly desired that performance of Pd catalysts is improved by the design and preparation of homogeneously dispersed and stablized in many industrial catalytic processes and still a big challenge. Herein, small-sized Pd over Al2O3-flower (f-Al2O3) via compartmentalization strategy is successfully prepared. Ultrafine Pd phases are highly dispersed and thermally stabilized by flower-liked architectures, which not only efficiently suppress Pd aggregation at reaction conditions, but also promote mass transport and reactants access to active sites easily. The catalysts exhibit a stable acetylene conversion of 93% with ethylene selectivity of 94% within a single running of 60 days (60 ℃, GHSV 4500 h−1) without introducing any promoter, and high TOF value (0.4 S−1) are achieved as well. This work provides a facile strategy of improving the activity and thermal stability of Al2O3-supported nano-catalysts in industrial application.
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Zhou, T., Yao, P., Gao, H. et al. Al2O3-Flower Anchoring Pd Catalyst for Acetylene Selective Hydrogenation: A Compartmentalizing Strategy Promotes Metal Dispersion and Maintains Stability. Catal Lett (2024). https://doi.org/10.1007/s10562-024-04693-z
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DOI: https://doi.org/10.1007/s10562-024-04693-z