PdAg/Al2O3 catalysts were prepared using a simple and scalable preparation method. A systematic approach established a preparation-performance relationship which revealed that the Pd:Ag ratio and Pd reduction method affects the overall performance for the selective hydrogenation of acetylene to ethylene under industrially relevant tail-end reaction conditions. The addition of Sn improved selectivity with the optimum system achieving 97% selectivity towards ethylene, outperforming two industrial references. Density functional theory (DFT) simulations and electron microscopy analysis revealed that Sn integrates into the Pd lattice and increases the energy barrier for ethylene adsorption. This work demonstrates that Sn can be used to tailor catalyst performance for industrially relevant PdAg/Al2O3 catalysts.

中文翻译：

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Sn掺杂PdAg/Al2O3催化剂：工业条件下乙炔选择性加氢制乙烯的高效催化剂


采用简单且可扩展的制备方法制备了 PdAg/Al2O3 催化剂。系统方法建立了制备-性能关系，揭示了 Pd:Ag 比例和 Pd 还原方法影响工业相关尾端反应条件下乙炔选择性加氢制乙烯的整体性能。 Sn 的添加提高了选择性，优化系统对乙烯的选择性达到 97%，优于两个工业参考。密度泛函理论（DFT）模拟和电子显微镜分析表明，Sn 融入 Pd 晶格中，增加了乙烯吸附的能垒。这项工作表明，Sn 可用于调整工业相关 PdAg/Al2O3 催化剂的催化剂性能。