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负载于硫掺杂有序介孔碳上的铂簇用于卤代硝基芳烃的化学选择性氢化

Platinum clusters anchored on sulfur-doped ordered mesoporous carbon for chemoselective hydrogenation of halogenated nitroarenes.

作者信息

Li Jianfeng, Ding Shenglong, Wang Fushan, Zhao Huacheng, Kou Jinfang, Akram Muhammad, Xu Manhua, Gao Wu, Liu Chuang, Yang Huangruoyin, Dong Zhengping

机构信息

State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China.

Lanzhou Petrochemical Company, PetroChina Company Limited, Lanzhou 730060, PR China.

出版信息

J Colloid Interface Sci. 2022 Nov;625:640-650. doi: 10.1016/j.jcis.2022.06.052. Epub 2022 Jun 15.

Abstract

Chemoselective hydrogenation of unsaturated organic compounds is a significant research topic in the catalysis field. Herein, a sulfur-doped ordered mesoporous carbon (SMC) material was prepared to anchor ultrafine platinum (Pt) clusters for the chemoselective hydrogenation of halogenated nitroarenes. The confinement effect of the ordered pores and the strong metal-support interaction caused by Pt clusters and sulfur atoms, efficiently suppress the aggregation and regulate the electronic states of the ultrafine Pt clusters. Thus, the hydrogenation of parachloronitrobenzene (p-CNB) shows high selectivity catalyzed by the ultrafine Pt clusters with electron-rich states. Meanwhile, the catalytic performance of the hydrogenation reaction catalyzed by Pt/SMC is capable of being maintained after at least 5 cycles, and the catalytic universality can also be applied to different halogenated nitroarenes hydrogenation. Therefore, this study may promote the research into the construction of noble metal-based catalysts for chemoselective hydrogenation reactions in green and sustainable chemical processes.

摘要

不饱和有机化合物的化学选择性氢化是催化领域的一个重要研究课题。在此,制备了一种硫掺杂有序介孔碳(SMC)材料,用于锚定超细铂(Pt)簇,以实现卤代硝基芳烃的化学选择性氢化。有序孔道的限域效应以及Pt簇与硫原子之间的强金属-载体相互作用,有效地抑制了超细Pt簇的聚集并调节了其电子态。因此,对氯硝基苯(p-CNB)的氢化反应在富电子态的超细Pt簇催化下表现出高选择性。同时,Pt/SMC催化的氢化反应性能在至少5次循环后仍能保持,并且催化通用性也可应用于不同卤代硝基芳烃的氢化反应。因此,本研究可能会推动绿色可持续化学过程中用于化学选择性氢化反应的贵金属基催化剂构建的研究。

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