Synthesis of sub-nanometric Cu2O catalysts for Pd-free C-C coupling reactions

被引：6

作者：

Agrawal, Ankit ^{[1
,2
]}

Goyal, Reena ^{[3
,4
]}

Abraham, B. Moses ^{[5
]}

Singh, Omvir ^{[1
,2
]}

Tripathi, Shailendra ^{[1
]}

Poddar, Mukesh K. ^{[4
]}

Bal, Rajaram ^{[4
]}

Sarkar, Bipul ^{[1
,2
]}

机构：

[1] CSIR Indian Inst Petr, Upstream & Wax Rheol Div, Catalyt Depolymerizat Area, Dehra Dun 248005, Uttarakhand, India

[2] Acad Sci & Innovat Res AcSIR, CSIR HRDC Campus,Sect 19, Ghaziabad 201002, India

[3] Indian Inst Technol Roorkee, Dept Chem Engn, Roorkee 247667, Uttar Pradesh, India

[4] CSIR Indian Inst Petr, Nano Catalysis Area, Light Stock Proc Div, Dehra Dun 248005, Uttarakhand, India

[5] Univ Hyderabad, Adv Ctr Res High Energy Mat ACRHEM, Hyderabad 500046, India

来源：

REACTION CHEMISTRY & ENGINEERING | 2021年 / 6卷 / 05期

关键词：

ARYL CHLORIDES; NANOPARTICLES; EFFICIENT; NANOCRYSTALS; DESIGN; SHAPE; NANOSTRUCTURES; NANOCLUSTERS; REDUCTION; AMINATION;

D O I：

10.1039/d1re00054c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a facile solution-phase sonochemical route for the glucose-template mediated synthesis of Cu2O nanocrystals with well-defined sizes and shapes. This approach offers a superficial and cost-effective route for the synthesis of Cu2O nanocrystals. The formation of different nanostructures (i.e., stars, cubes, and octahedra) was tuned by varying the reaction conditions as well as the concentration of template. The morphology-controlled Cu2O nanocrystals show high activity for the external base-free Ullmann homocoupling reactions of aryl halides. 61.6% conversion of chlorobenzene was achieved over octagonal Cu2O nanocrystals with a turn-over-frequency (TOF) as high as 1696 h(-1). This result demonstrates that the size and shape-dependent properties of Cu2O nanocrystals are critical to the activity of aryl halide and highlights the importance of shape engineering in the design and development of an efficient catalyst for the Ullmann reaction.

引用

页码：929 / 936

页数：8

共 51 条

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