Controllable deposition of dispersed Pd nanoparticles on ZnO for Suzuki-Miyaura cross-coupling reactions

被引：2

作者：

Bressi, Viviana ^{[1
,2
]}

Len, Thomas ^{[2
]}

Polidoro, Daniele ^{[3
]}

Esposito, Roberto ^{[4
]}

Mazur, Michal ^{[5
]}

Selva, Maurizio ^{[3
]}

Espro, Claudia ^{[1
]}

Luque, Rafael ^{[6
,7
]}

机构：

[1] Univ Messina, Dept Engn, C da di Dio, Messina, Italy

[2] Univ Cordoba, Dept Quim Organ, Inst Quim Fina & Nanoquim, Campus Rabanales,Edificio Marie Curie C-3,Ctra Nna, Cordoba, Spain

[3] Ca Foscari Univ Venice, Dept Mol Sci & Nanosyst, Via Torino 155, Venice, Italy

[4] Univ Naples Federico II, Dept Chem Sci, IT-80126 Naples, Italy

[5] Charles Univ Prague, Fac Sci, Dept Phys & Macromol Chem, Hlavova 8, Prague 2, Czech Republic

[6] Univ Mediterranea Reggio Calabria UNIRC, DICEAM, Via Zehender Gia Via Graziella, I-89122 Reggio Di Calabria, Italy

[7] Univ ECOTEC, Km 13-5 Samborondon, EC-092302 Samborondon, Ecuador

来源：

DALTON TRANSACTIONS | 2023年 / 52卷 / 46期

关键词：

METAL-SUPPORT INTERACTIONS; PALLADIUM NANOPARTICLES; CATALYST; CARBON; HYDROGENATION; CLUSTERS; METHANOL; PD/ZNO; ALLOY; OXIDE;

D O I：

10.1039/d3dt02295a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Palladium nanoparticles find extensive applications in catalysis in both homogeneously and heterogeneously catalyzed processes. Supporting metal nanoparticles enhances their stability as compared to their unsupported counterparts. The role of catalytic support is increasingly recognized as crucial in determining the behaviour of these materials. However, controlling the deposition and anchoring of palladium nanoparticles remains a significant challenge. This contribution discusses the preparation of straight lines of palladium particles on zinc oxide by wet impregnation. This phenomenon is attributed to the highly stepped morphology of the employed ZnO that created steric anchoring sites to stabilize the metal particles. Palladium-based catalysts were evaluated for the valuable Suzuki-Miyaura cross-coupling reaction. The dispersed Pd/ZnO catalyst achieved a conversion rate of 86% with 100% selectivity, remarkably superior to that of the Pd/Al2O3 and Pd/TiO2 counterparts. Precise placement of Palladium (Pd) nanoparticles onto ZnO surfaces, resulting in improved performance in Suzuki-Miyaura cross-coupling processes due to accurate catalyst dispersion.

引用

页码：17279 / 17288

页数：10

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[31] Addressing the CO2 challenge through thermocatalytic hydrogenation to carbon monoxide, methanol and methane [J].