Polystyrene-Supported Cu/2,2,6,6-Tetramethyl-1-piperidine-N-oxyl Catalytic Systems Constructed by Nanoprecipitation and Their Cooperative Catalysis for Benzyl Alcohol Oxidation,ACS Applied Polymer Materials

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Polystyrene-Supported Cu/2,2,6,6-Tetramethyl-1-piperidine-N-oxyl Catalytic Systems Constructed by Nanoprecipitation and Their Cooperative Catalysis for Benzyl Alcohol Oxidation
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2021-09-15 , DOI: 10.1021/acsapm.1c00909
Tianyou Chen ₁ , Zihao Wang ₁ , Wei Xiao ₁ , Changfeng Yi ₁ , Zushun Xu ₁

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Transformation of multifunctional homogeneous catalysts to the corresponding heterogeneous catalytic systems makes catalytic reactions interesting from both economic and environmental points of view. Here, we have devised a controllable and efficient strategy for the preparation of supported multifunctional catalysts by taking the Cu/2,2,6,6-tetramethyl-1-piperidine-N-oxyl (TEMPO) catalytic system as an example. Polystyrene-supported Cu/TEMPO catalysts were, for the first time, prepared via nanoprecipitation of polymers in water and efficient for aerobic oxidation of benzyl alcohol (BnOH). Cooperative behaviors could be regulated by precise control of local concentrations of functional groups. We have demonstrated that the incorporation of functional groups into polystyrene supports can make better use of catalytic components, resulting from confinement-enhanced cooperation. This strategy provides access to build more efficient multifunctional heterogeneous catalysts through establishing structure–activity relationships.

中文翻译：

纳米沉淀法构建的聚苯乙烯负载Cu/2,2,6,6-四甲基-1-哌啶-N-氧基催化体系及其协同催化苯甲醇氧化

从经济和环境的角度来看，将多功能均相催化剂转化为相应的多相催化体系使催化反应变得有趣。在这里，我们设计了一种可控且有效的策略，通过采用 Cu/2,2,6,6-四甲基-1-哌啶-N制备负载型多功能催化剂-oxyl (TEMPO) 催化体系为例。聚苯乙烯负载的 Cu/TEMPO 催化剂首次通过聚合物在水中的纳米沉淀制备，并有效地用于苯甲醇 (BnOH) 的有氧氧化。合作行为可以通过精确控制功能组的局部浓度来调节。我们已经证明，将官能团引入聚苯乙烯载体可以更好地利用催化组分，这是由于限制增强的合作。该策略通过建立结构-活性关系提供了构建更有效的多功能多相催化剂的途径。

更新日期：2021-10-08

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