原子分散的 Pd 和氧化铈之间的协同作用，增强了催化性能。
The synergy between atomically dispersed Pd and cerium oxide for enhanced catalytic properties.
机构信息
State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China.
出版信息
Nanoscale. 2017 May 25;9(20):6643-6648. doi: 10.1039/c6nr09707c.
We report a photochemical synthesis of Pd/CeO catalysts with atomically dispersed Pd. Compared to atomically dispersed Pd/CeO with a cubic CeO support (Pd/CeO-CP), atomically dispersed Pd/CeO with a truncated octahedral CeO support (Pd/CeO-TOP) exhibited higher activity and selectivity, owing to the synergy between Pd atoms and the (111) surface of CeO. When compared to Pd/CeO with Pd clusters and nanoparticles via chemical reduction, Pd/CeO-TOP showed excellent activity with an enhancement factor of 324 in CO oxidation, as well as an activity enhancement by a factor of 344 in selective oxidation of benzyl alcohol.
我们报告了一种具有原子分散 Pd 的 Pd/CeO 催化剂的光化学合成。与具有立方 CeO 载体的原子分散 Pd/CeO（Pd/CeO-CP）相比，具有截角八面体 CeO 载体的原子分散 Pd/CeO（Pd/CeO-TOP）表现出更高的活性和选择性，这归因于 Pd 原子与 CeO 的（111）表面之间的协同作用。与通过化学还原法制备的具有 Pd 团簇和纳米颗粒的 Pd/CeO 相比，Pd/CeO-TOP 在 CO 氧化中表现出优异的活性，增强因子为 324，在苯甲醇的选择性氧化中，活性增强因子为 344。
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