Highly Active and Selective RuPd Bimetallic NPs for the Cleavage of the Diphenyl Ether C–O Bond,ACS Catalysis

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Highly Active and Selective RuPd Bimetallic NPs for the Cleavage of the Diphenyl Ether C–O Bond
ACS Catalysis ( IF 11.3 ) Pub Date : 2018-10-22 00:00:00 , DOI: 10.1021/acscatal.8b03253
Miao Guo _{1,

2} , Juan Peng _{1,

2} , Qihua Yang ₁ , Can Li ₁

Affiliation

The cleavage of C–O linkages of aryl ethers into aromatic platform compounds is a challenging reaction but of great importance for the sustainable future. Herein, we reported the efficient H₂-assisted C–O bond cleavage of diphenyl ether (DPE) in aqueous phase over ultrasmall RuPd bimetallic nanoparticles (NPs) supported on amine-rich silica hollow nanospheres (NH₂–SiO₂). RuPd₅/NH₂–SiO₂ with TOF of 172 h^–1 and C–O cleavage selectivity of 99% outperformed the corresponding monometallic counterparts and is among the most active solid catalysts for C–O bond cleavage of DPE. The control experiments and characterization results showed that the effective isolation of Ru sites and optimized H₂ dissociation ability mainly contributed to the enhanced catalytic performance of RuPd bimetallic NPs, in which Ru and Pd worked cooperatively with Ru sites for DPE activation and Pd sites for H₂ dissociation. The alloying of two or multiple metal atoms provides an efficient approach for designing high-performance catalysts for chemical transformations.

中文翻译：

具有高活性和选择性的RuPd双金属NP用于裂解二苯醚C–O键

芳基醚的C–O键裂解为芳族平台化合物是一个具有挑战性的反应，但对可持续的未来至关重要。在本文中，我们报道了富胺的二氧化硅空心纳米球（NH ₂ -SiO ₂）上的超小RuPd双金属纳米颗粒（NPs）在水相中有效地进行了二苯基醚（DPE）的H ₂辅助C–O键裂解。RuFd ₅ / NH ₂ –SiO ₂，TOF为172 h ^–1和99％的C-O裂解选择性优于相应的单金属，是DPE C-O裂解最活跃的固体催化剂之一。控制实验和表征结果表明，Ru位点的有效分离和优化的H ₂解离能力主要有助于RuPd双金属NPs的增强催化性能，其中Ru和Pd与Ru位点协同作用以促进DPE活化和Pd位点对H的协同作用。₂解离。两个或多个金属原子的合金化为设计用于化学转化的高性能催化剂提供了一种有效的方法。

更新日期：2018-10-22

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