Highly Active and Chemoselective Reduction of Halogenated Nitroarenes Catalyzed by Ordered Mesoporous Carbon Supported Platinum Nanoparticles Yao Sheng Xueguang Wang Zhikang Xing Xiubin Chen Xiujing Zou Xionggang Lu 10.1021/acssuschemeng.9b00948.s001 https://acs.figshare.com/articles/journal_contribution/Highly_Active_and_Chemoselective_Reduction_of_Halogenated_Nitroarenes_Catalyzed_by_Ordered_Mesoporous_Carbon_Supported_Platinum_Nanoparticles/8041055 Highly dispersed Pt nanoparticles (∼2.2 nm) on ordered mesoporous carbon (Pt/CMK-3–HQ) were first prepared through a two-step impregnation route with aqueous solutions of 8-hydroxyquinoline (8-HQ) and H<sub>2</sub>PtCl<sub>6</sub>, respectively. The Pt/CMK-3–HQ quantitatively converted various halogenated nitroarenes to the corresponding haloanilines using hydrazine hydrate with unprecedented activities (e.g., turnover frequency for <i>o</i>-chloronitrobenzene was 30.2 s<sup>–1</sup>) and exhibited high stability with 20 cycles without decrease in catalytic efficiency. The high activity and chemoselectivity of Pt/CMK-3–HQ were attributed to the cooperation effect between Pt and N species, promoting cleavage of hydrazine to generate more Pt–H<sup>–</sup> and N–H<sup>+</sup> species for reduction of nitro groups and weakening the interaction between halogen groups and Pt atoms for activation of C-halogen bonds. 2019-04-17 00:00:00 Halogenated Nitroarenes Catalyzed HQ Chemoselective Reduction impregnation route Mesoporous Carbon C-halogen bonds N species hydrazine hydrate mesoporous carbon H 2 PtCl 6 Platinum Nanoparticles nitro groups 20 cycles Pt atoms halogen groups cooperation effect