Ru/UiO-66 Catalyst for the Reduction of Nitroarenes
and Tandem Reaction of Alcohol Oxidation/Knoevenagel Condensation
Posted on 2018-04-13 - 17:34
A 3.1%
Ru/UiO-66 material was prepared by adsorption of RuCl3 from
ethyl acetate on to MOF UiO-66, followed by reduction
with NaBH4. The presence of acid–base and ox-red
sites allows this 3.1% Ru/UiO-66 material acting as a bifunctional
catalyst for the reduction of nitroarenes and tandem reaction of alcohol
oxidation/Knoevenagel condensation. The high efficiency of 3.1% Ru/UiO-66
was demonstrated in the reduction of nitroarenes to amines. This system
can be applied as a catalyst for at least six successive cycles without
loss of activity. The 3.1% Ru/UiO-66 catalyst also was active in the
tandem aerobic oxidation of alcohols/Knoevenagel condensation with
malononitrile. However, the activity of this catalyst strongly decreased
in the second cycle. A combination of physicochemical and catalytic
experimental data indicated that Ru nanoparticles are the active sites
both for the catalytic reduction of nitro compounds and the aerobic
oxidation of alcohols. The activity for the Knoevenagel condensation
reaction was from the existence of the “Zrn+–O2– Lewis acid–base”
pair in the framework of UiO-66.
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Yang, Qiming; Zhang, Hong-Yu; Wang, Liping; Zhang, Yuecheng; Zhao, Jiquan (2018). Ru/UiO-66 Catalyst for the Reduction of Nitroarenes
and Tandem Reaction of Alcohol Oxidation/Knoevenagel Condensation. ACS Publications. Collection. https://doi.org/10.1021/acsomega.8b00157
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AUTHORS (5)
QY
Qiming Yang
HZ
Hong-Yu Zhang
LW
Liping Wang
YZ
Yuecheng Zhang
JZ
Jiquan Zhao