PVA-encapsulated Palladium Nanoparticles: Eco-friendly and Highly Selective Catalyst for Hydrogenation of Nitrobenzene in Aqueous Medium

被引：18

作者：

Wang, Xiaoyan ^{[1
]}

Huang, Changru ^{[1
]}

Li, Xiaohao ^{[1
]}

Xie, Congxia ^{[1
]}

Yu, Shitao ^{[2
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, State Key Lab Base Ecochem Engn, Zhengzhou Rd 53, Qingdao, Shandong, Peoples R China

[2] Qingdao Univ Sci & Technol, Coll Chem Engn, Zhengzhou Rd 53, Qingdao, Shandong, Peoples R China

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2019年 / 14卷 / 13期

基金：

中国国家自然科学基金;

关键词：

hydrogenation; nanoparticles; palladium; PVA aggregates; water; NICKEL NANOPARTICLES; RECYCLABLE CATALYST; REDUCTION; NITROARENES; EFFICIENT; CARBON; WATER; PLATINUM; ANILINES; SYSTEM;

D O I：

10.1002/asia.201900333

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In aqueous medium without any other additives, palladium (Pd) nanoparticles with water-soluble polyvinyl alcohol (PVA) as stabilizer were synthesized for the catalytic hydrogenation of nitrobenzene. Under the optimum experimental conditions, the nitrobenzene conversion and the selectivity for aniline were 99.3% and 100 %, respectively. Comprehensive characterization methods, including TEM, UV/Vis, confocal laser scanning microscopy (CLSM), XRD and XPS allowed a better understanding of the role of PVA aggregates and the properties of Pd nanoparticles. The nitrobenzene conversion exceeded 80% even after 6 cycles without any treatment of the catalyst. A mechanism about the hydrogenation of nitrobenzene catalyzed by Pd/PVA system was proposed. The Pd/PVA catalyst also exhibited excellent activity and selectivity, particularly to ortho-fluoronitrobenzene and ortho-nitrotoluene. This research can provide a reference for the environmentally friendly catalysis for hydrogenation of nitrobenzene and other substituted nitrobenzene compounds.

引用

收藏

页码：2266 / 2272

页数：7

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