Construction of Multiple Nonpolar SF6 Nano‐Traps by Highly Stable Pyrazole‐Based MOFs for SF6 Recovery
Qichen Fan,
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Jinze Yao,
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Siyao Zhao
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et al.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 7, 2025
Abstract
Sulfur
hexafluoride
(SF
6
),
widely
used
in
electric
power
systems,
is
one
of
the
most
potent
greenhouse
gases.
Efficient
separation
SF
/N
2
by
adsorptive
technology
based
on
porous
materials
great
significance
industry
yet
remains
a
daunting
challenge.
Herein,
novel
strategy
introduced
to
construct
unique
pore
channels
with
multiple
nano‐traps
precisely
selecting
bipyrazole
ligands
design
nonpolar
surface
microporous
metal−organic
frameworks
(MOFs),
which
significantly
enhances
material's
affinity
for
.
A
series
ultra‐stable
bipyrazole‐based
MOFs,
M(BPZ)
(M═Co,
Ni,
Zn),
are
synthesized
and
investigated.
Among
these
three
materials,
Co(BPZ)
Zn(BPZ)
show
excellent
uptakes
2.47
2.39
mmol
g
−1
at
298
K
0.1
bar
while
exhibits
highest
(10/90,
v/v)
IAST
selectivity
748.
Breakthrough
experiments
reveal
that
mixtures
can
be
efficiently
separated
high
(≥99.5
%)
productivity
46.1
L
kg
Theoretical
calculations
suggest
preferably
adsorbs
through
S−F···
π
(pyrazole
rings)
van
der
Waals
interactions.
This
work
provides
straightforward
approach
exploring
adsorbents
efficient
separation.
Language: Английский
Activation and C‒C Coupling of Aryl Iodides via Bismuth Photocatalysis
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 22, 2024
Within
the
emerging
field
of
bismuth
redox
catalysis,
catalytic
formation
C-C
bonds
using
aryl
halides
would
be
highly
desirable;
yet
such
a
process
remains
synthetic
challenge.
Herein,
we
present
chemoselective
bismuth-photocatalyzed
activation
and
subsequent
coupling
(hetero)aryl
iodides
with
pyrrole
derivatives
to
access
C(sp
Language: Английский
Activation and C‒C Coupling of Aryl Iodides via Bismuth Photocatalysis
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 22, 2024
Abstract
Within
the
emerging
field
of
bismuth
redox
catalysis,
catalytic
formation
C−C
bonds
using
aryl
halides
would
be
highly
desirable;
yet
such
a
process
remains
synthetic
challenge.
Herein,
we
present
chemoselective
bismuth‐photocatalyzed
activation
and
subsequent
coupling
(hetero)aryl
iodides
with
pyrrole
derivatives
to
access
C(sp
2
)−C(sp
)
linkages
through
C−H
functionalization.
This
unique
reactivity
is
result
complex
featuring
two
state‐dependent
interactions
light,
which
1)
activates
Bi(I)
for
oxidative
addition
via
MLCT,
2)
promotes
homolytic
cleavage
Bi(III)
intermediates
LLCT
process.
Language: Английский