Dilute Pd/Au Alloys Replace Au/TiO2 Interface for Selective Oxidation Reactions,ACS Catalysis

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Dilute Pd/Au Alloys Replace Au/TiO2 Interface for Selective Oxidation Reactions
ACS Catalysis ( IF 11.3 ) Pub Date : 2020-01-10 , DOI: 10.1021/acscatal.9b05227
Cody J. Wrasman ₁ , Andrew R. Riscoe ₁ , Hyosun Lee _{1,

2,

3} , Matteo Cargnello ₁

Affiliation

The tandem nature of selective alcohol oxidation with in situ-generated oxidants over Au/metal oxide catalysts is demonstrated. Colloidal synthesis is used to show that while Au nanoparticles require an oxide interface to generate the selective oxidant from a mixture of hydrogen and oxygen, dilute Pd/Au alloy nanoparticles are able to generate oxidants even when immobilized on inert carbon supports because of the hydrogen dissociation ability of Pd single atoms in Au. These oxidants may travel through the gas phase to be utilized by a variety of metal oxides to selectively oxidize primary and secondary alcohols to their respective carbonyls.

中文翻译：

稀释的Pd / Au合金代替Au / TiO ₂界面进行选择性氧化反应

证明了在Au /金属氧化物催化剂上用原位生成的氧化剂进行选择性醇氧化的串联性质。胶体合成用于显示，虽然Au纳米粒子需要氧化物界面才能从氢和氧的混合物中生成选择性氧化剂，但稀的Pd / Au合金纳米粒子即使由于氢解离而固定在惰性碳载体上也能够生成氧化剂。 Au中Pd单原子的能力这些氧化剂可通过气相，以被多种金属氧化物利用，以选择性地将伯醇和仲醇氧化为它们各自的羰基。

更新日期：2020-01-10

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