Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(25), С. 17220 - 17229
Опубликована: Июнь 11, 2024
The
efficient
separation
of
C2H2
from
C2H2/CO2
or
C2H2/CO2/CH4
mixtures
is
crucial
for
achieving
high-purity
(>99%),
essential
in
producing
contemporary
commodity
chemicals.
In
this
report,
we
present
ZNU-12,
a
metal–organic
framework
with
space-partitioned
pores
formed
by
inorganic
fluorinated
anions,
highly
and
separation.
framework,
partitioned
SiF62–
anions
into
three
distinct
cages,
enables
both
high
capacity
(176.5
cm3/g
at
298
K
1.0
bar)
outstanding
selectivity
over
CO2
(13.4)
CH4
(233.5)
simultaneously.
Notably,
achieve
record-high
productivity
(132.7,
105.9,
98.8,
80.0
L/kg
99.5%
purity)
(v/v
=
50/50)
1/1/1,
1/1/2,
1/1/8)
through
cycle
adsorption–desorption
breakthrough
experiments
recovery
rates.
Theoretical
calculations
suggest
the
presence
potent
"2
+
2"
collaborative
hydrogen
bonds
between
two
hexafluorosilicate
(SiF62–)
confined
cavities.
Journal of the American Chemical Society,
Год журнала:
2022,
Номер
144(33), С. 14992 - 14996
Опубликована: Авг. 5, 2022
Rational
design
of
covalent
organic
frameworks
(COFs)
to
broaden
their
diversity
is
highly
desirable
but
challenging
due
the
limited,
expensive,
and
complex
building
blocks,
especially
compared
with
other
easily
available
porous
materials.
In
this
work,
we
fabricated
two
novel
bioinspired
COFs,
namely,
NUS-71
NUS-72,
using
reticular
chemistry
ellagic
acid
triboronic
acid-based
blocks.
Both
COFs
AB
stacking
mode
exhibit
high
acetylene
(C2H2)
adsorption
capacity
excellent
separation
performance
for
C2H2/CO2
mixtures,
which
significant
rarely
explored
COFs.
The
impressive
affinities
C2H2
appear
be
related
sandwich
structure
formed
by
host
framework
via
multiple
host–guest
interactions.
This
work
not
only
represents
a
new
avenue
construction
low-cost
also
expands
variety
COF
family
natural
biochemicals
as
blocks
broad
application.
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
61(41)
Опубликована: Авг. 18, 2022
Developing
porous
materials
to
overcome
the
trade-off
between
adsorption
capacity
and
selectivity
for
C2
H2
/CO2
separation
remains
a
challenge.
Herein,
we
report
stable
HKUST-1-like
MOF
(ZJU-50a),
featuring
large
cages
decorated
with
high
density
of
supramolecular
binding
sites
achieve
both
storage
selectivity.
ZJU-50a
exhibits
one
highest
(192
cm3
g-1
)
concurrently
(12)
at
298
K
1
bar.
Single-crystal
X-ray
diffraction
studies
on
gas-loaded
crystal
unveil
that
incorporated
can
selectively
take
up
molecule
but
not
CO2
result
in
Breakthrough
experiments
validated
its
performance
mixtures,
providing
recovery
84.2
L
kg-1
99.5
%
purity.
This
study
suggests
novel
strategy
engineering
into
MOFs
this
separation.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(21)
Опубликована: Март 20, 2023
Developing
adsorptive
separation
processes
based
on
C2
H6
-selective
sorbents
to
replace
energy-intensive
cryogenic
distillation
is
a
promising
alternative
for
H4
purification
from
/C2
mixtures,
which
however
remains
challenging.
During
our
studies
two
isostructural
metal-organic
frameworks
(Ni-MOF
1
and
Ni-MOF
2),
we
found
that
2
exhibited
significantly
higher
performance
than
Ni-MOF-1,
as
clearly
established
by
gas
sorption
isotherms
breakthrough
experiments.
Density-Functional
Theory
(DFT)
showed
the
unblocked
unique
aromatic
pore
surfaces
within
induce
more
stronger
C-H⋅⋅⋅π
with
over
while
suitable
spaces
enforce
its
high
uptake
capacity,
featuring
one
of
best
porous
materials
this
very
important
separation.
It
generates
12
L
kg-1
polymer-grade
product
equimolar
mixtures
at
ambient
conditions.
ACS Catalysis,
Год журнала:
2022,
Номер
12(16), С. 10373 - 10383
Опубликована: Авг. 9, 2022
Seeking
strategies
to
enhance
the
chemical
stability
of
metal–organic
framework
(MOF)
materials
has
become
a
focus
for
practical
applications,
which
prompts
us
carry
out
exploratory
self-assembly
microporous
heterometallic
MOFs
by
introducing
alkali
metal
ions.
Herein,
exquisite
combination
scarcely
reported
S-shaped
[Pb10K2(μ2-OH)2(COO)24]
clusters
and
2,4,6-tri(2,4-dicarboxyphenyl)pyridine
(H6TDP)
ligands
under
solvothermal
conditions
generated
highly
robust
{(Me2NH2)2[Pb5K(TDP)2(μ2-OH)]·4DMF·6H2O}n
(NUC-45)
with
one-dimensional
(1D)
open
channels
along
a-axis.
Thanks
excellent
confined
pore
environments,
such
as
large
surface
area,
rich
Lewis
acid
sites
including
Pb2+
K+,
plentiful
base
μ2-OH
group
Npyridine
atom,
channels,
activated
NUC-45a
exhibits
catalytic
performance
in
cycloaddition
CO2
various
epoxides
mild
conditions.
Moreover,
NUC-45a,
heterogeneous
catalyst,
shows
high
activity
Knoevenagel
condensation
aldehydes
malononitrile
recyclability.
Meanwhile,
both
reactions
have
turnover
number
frequency.
This
work
that
use
multifunctional
organic
introduction
ions
are
conducive
construction
porous
cluster-based
catalysis.
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
61(42)
Опубликована: Авг. 17, 2022
Because
C2
H4
plays
an
essential
role
in
the
chemical
industry,
economical
and
energy-efficient
separation
of
ethylene
(C2
)
from
ethane
H6
is
extremely
important.
With
exception
energy-intensive
cryogenic
distillation,
there
are
few
one-step
methods
to
obtain
polymer-grade
(≥99.95
%
pure)
/C2
mixtures.
Here
we
report
a
highly
stable
metal-organic-framework
(MOF)
FJI-H11-Me(des)
(FJI-H=Hong's
group
Fujian
Institute
Research
on
Structure
Matter)
which
features
one-dimensional
hexagonal
nonpolar
pore
surfaces
constructed
by
aromatic
rings
alkyl
groups.
This
adsorbs
rather
than
between
273
303
K.
Practical
breakthrough
experiments
with
containing
1
have
shown
that
can
realize
acquisition
polymer-grade,
99.95
pure
under
various
conditions
including
different
gas
flow
rates,
temperatures
relative
humidity.
