Pd–P nanoalloys supported on a porous carbon frame as an efficient catalyst for benzyl alcohol oxidation†,Catalysis Science & Technology

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Pd–P nanoalloys supported on a porous carbon frame as an efficient catalyst for benzyl alcohol oxidation†
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2018-03-29 00:00:00 , DOI: 10.1039/c8cy00554k
Wenyao Guo _{1,

2,

3,

4,

5} , Shuo Niu _{1,

2,

3,

4,

5} , Wen Shi _{5,

6,

7,

8,

9} , Bingsen Zhang _{5,

6,

7,

8,

9} , Weizhen Yu _{1,

2,

3,

4,

5} , Yanan Xie _{1,

2,

3,

4,

5} , Xiaobo Ji _{5,

10,

11,

12} , Yifei Wu _{1,

2,

3,

4,

5} , Dangsheng Su _{5,

6,

7,

8,

9} , Lidong Shao _{1,

2,

3,

4,

5}

Affiliation

In this work, a novel porous carbon frame (PCF) is obtained by an economical and effective method and acts as a support in the process of forming the catalyst. A phosphorus-doped palladium alloy supported on the PCF (Pd–P/PCF) is synthesized using sodium hypophosphite (NaH₂PO₂) as the P source and the reducing agent, and is used as an efficient catalyst for benzyl alcohol oxidation. Pd–P/PCF shows better catalytic performance than the analogous catalyst synthesized using NaBH₄ as the reducing agent (Pd/PCF). Surface analysis of the catalyst before and after the oxidation reaction shows that the embedded P atoms may affect the 3d electron density of Pd and may further weaken the binding of alcohol intermediates, thus promoting the catalytic performance of Pd–P/PCF. In addition, due to the introduction of P, the functional groups of the catalyst are different in comparison with Pd/PCF. The stronger alkalinity and hydrophobicity of these groups can effectively facilitate the adsorption of benzyl alcohol and the subsequent desorption of the corresponding aldehyde, thereby promoting the overall rate of reaction.

中文翻译：

Pd-P纳米合金负载在多孔碳框架上，可作为苄醇氧化的有效催化剂†

在这项工作中，通过经济有效的方法获得了新颖的多孔碳骨架（PCF），并在催化剂形成过程中用作载体。以次磷酸钠（NaH ₂ PO ₂）为还原剂，合成了负载在PCF上的掺磷钯合金（Pd–P / PCF），并用作苄醇氧化的有效催化剂。Pd–P / PCF显示出比使用NaBH ₄合成的类似催化剂更好的催化性能。作为还原剂（Pd / PCF）。氧化反应前后的催化剂表面分析表明，嵌入的P原子可能会影响Pd的3d电子密度，并可能进一步削弱醇中间体的结合，从而提高Pd-P / PCF的催化性能。另外，由于引入了P，因此催化剂的官能团与Pd / PCF相比有所不同。这些基团的较强的碱度和疏水性可有效地促进苄醇的吸附和随后相应醛的解吸，从而促进总反应速率。

更新日期：2018-03-29

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