%0 Journal Article
%A Sheng, Yao
%A Wang, Xueguang
%A Xing, Zhikang
%A Chen, Xiubin
%A Zou, Xiujing
%A Lu, Xionggang
%D 2019
%T Highly Active and Chemoselective Reduction of Halogenated
Nitroarenes Catalyzed by Ordered Mesoporous Carbon Supported Platinum
Nanoparticles
%U https://acs.figshare.com/articles/journal_contribution/Highly_Active_and_Chemoselective_Reduction_of_Halogenated_Nitroarenes_Catalyzed_by_Ordered_Mesoporous_Carbon_Supported_Platinum_Nanoparticles/8041055
%R 10.1021/acssuschemeng.9b00948.s001
%2 https://acs.figshare.com/ndownloader/files/14985743
%K Halogenated Nitroarenes Catalyzed
%K HQ
%K Chemoselective Reduction
%K impregnation route
%K Mesoporous Carbon
%K C-halogen bonds
%K N species
%K hydrazine hydrate
%K mesoporous carbon
%K H 2 PtCl 6
%K Platinum Nanoparticles
%K nitro groups
%K 20 cycles
%K Pt atoms
%K halogen groups
%K cooperation effect
%X 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 H2PtCl6, 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 o-chloronitrobenzene
was 30.2 s–1) 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– and N–H+ species for reduction of nitro groups and weakening the interaction
between halogen groups and Pt atoms for activation of C-halogen bonds.
%I ACS Publications