FeS<sub>2</sub>-rGO复合载体负载Pd高效催化硝基芳烃选择性加氢反应

摘要钯基催化剂是一类重要的催化加氢催化剂,具有催化活性高、适用性广等优势,但过高的加氢活性限制了其在选择性加氢反应中的应用。利用二硫化铁-还原氧化石墨烯(FeS₂-rGO)复合载体负载钯,制备了一种新型Pd/FeS₂-rGO催化剂,并对其催化硝基芳烃选择性加氢制芳胺反应性能进行了研究。通过X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、X射线光电子能谱(XPS)等表征手段对Pd/FeS₂-rGO催化剂进行了表征分析,探究了载体对催化硝基芳烃选择性加氢性能的调控影响规律。研究结果表明,FeS₂-rGO复合载体对Pd具有优异的分散作用和电子调控能力,使Pd/FeS₂-rGO催化剂催化硝基氯苯加氢反应转化率和选择性都达99%。此外,催化剂对硝基芳烃选择性加氢反应具有优异的普适性和循环稳定性,循环复用6次而无性能下降。为高效硝基芳烃选择性加氢催化剂的开发提供了新思路。

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	王瑞
	谭晓杰
	李旭东
	刘亚超
	刘腾飞
	崔世豪
	赵青山

关键词：钯基催化剂复合载体 FeS₂-rGO 选择性加氢电子调控

Abstract： Palladium-based catalysts are known as effective catalysts for hydrogenation reactions with wide applicability, while the excessive hydrogenation activity limits their application in selective hydrogenation reactions. In this study, a novel Pd/FeS₂-rGO catalyst was prepared by loading palladium onto a FeS₂-rGO composite carrier, and its catalytic performance towards the selective hydrogenation of nitroarenes to aromatic amines was investigated. The Pd/FeS₂-rGO catalyst was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The influence of the carrier on the catalytic performance was explored. The results show that the FeS₂-rGO composite carrier can well disperse and regulate the electron density of Pd, resulting in a 99% conversion and selectivity for the hydrogenation of 4-chloronitrobenzene over the Pd/FeS₂-rGO catalyst. In addition, the catalyst also showed excellent universality and cycling stability for the selective hydrogenation of various nitroarenes, which could be recycled six times without performance degradation. This study provides a new idea for developing high-efficiency catalysts for the selective hydrogenation of nitroarenes.

Keywords： palladium-based catalyst composite carrier FeS₂-rGO selective hydrogenation electronic regulation

Received 2024-01-16;

Fund:国家自然科学基金资助项目(22208375)。

Corresponding Authors: 赵青山,副教授,E-mail:qszhao@upc.edu.cn。 Email: qszhao@upc.edu.cn

About author: 王瑞(1999-),男,硕士研究生,主要从事绿色催化及应用研究。

引用本文:

王瑞, 谭晓杰, 李旭东, 刘亚超, 刘腾飞, 崔世豪, 赵青山.FeS₂-rGO复合载体负载Pd高效催化硝基芳烃选择性加氢反应[J]. 化学工业与工程, 2024,41(5): 131-140

WANG Rui, TAN Xiaojie, LI Xudong, LIU Yachao, LIU Tengfei, CUI Shihao, ZHAO Qingshan.Pd supported on FeS₂-rGO composite carrier for efficient selective hydrogenation of nitroarenes[J]. Chemcial Industry and Engineering, 2024,41(5): 131-140

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