Crystal Growth & Design,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 15, 2025
Natural
gas
upgrading
is
industrially
important
for
its
utilization,
wherein
the
recovery
of
heavier
alkanes,
such
as
ethane
(C2H6)
and
propane
(C3H8)
certain
economic
importance.
Hydrogen-bonded
organic
frameworks
(HOFs)
have
shown
great
potential
separating
alkanes.
Such
a
type
porous
material
so
flexible
that
it
very
challenging
to
show
permanent
porosity
separation.
Here,
we
report
an
ultramicroporous
hydrogen-bonded
framework
HOF-MTBA
effective
separation
ternary
mixtures
C3H8/C2H6/CH4
binary
C2H6/CH4
C3H8/CH4.
Upon
solvent
exchange,
accommodates
dichloromethane
molecules
new
phase,
which
can
be
readily
transformed
into
open
phase
after
desolvation.
Single-component
sorption
experiments
exhibit
high
low-pressure
uptakes
C2H6
(0.71
mmol/g,
at
10
kPa
298
K)
C3H8
(1.2
5
K),
are
higher
than
many
reported
adsorbents
(0.16–0.73
mmol/g)
under
same
conditions.
The
adsorptive
selectivities
C3H8/CH4
calculated
52.7
14.0.
breakthrough
experiment
demonstrates
high-purity
CH4
obtained
from
C3H8/C2H6/CH4,
C3H8/CH4,
C2H6/CH4,
respectively.
Chemical Science,
Год журнала:
2024,
Номер
15(26), С. 9874 - 9892
Опубликована: Янв. 1, 2024
In
this
perspective,
we
have
discussed
the
recent
progress
of
flexible
HOFs,
with
particular
focus
on
various
dynamic
behaviors
and
their
applications
in
different
fields.
Finally,
current
challenges
opportunities
field
are
discussed.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(17)
Опубликована: Фев. 26, 2024
The
structure
and
properties
of
materials
are
determined
by
a
diverse
range
chemical
bond
formation
breaking
mechanisms,
which
greatly
motivates
the
development
selectively
controlling
bonds
in
order
to
achieve
with
specific
characteristics.
Here,
an
orientational
intervening
bond-breaking
strategy
is
demonstrated
for
synthesizing
ultrathin
metal-organic
framework
(MOF)
nanosheets
through
balancing
process
thermal
decomposition
liquid
nitrogen
exfoliation.
In
such
approach,
proper
treatment
can
weaken
interlayer
while
maintaining
stability
intralayer
layered
MOFs.
And
following
results
significant
deformation
stress
MOFs'
due
instant
temperature
drop
drastic
expansion
N
Chemistry - A European Journal,
Год журнала:
2024,
Номер
30(17)
Опубликована: Янв. 5, 2024
Abstract
Hydrogen‐bonded
organic
frameworks
(HOFs)
are
a
class
of
crystalline
framework
materials
assembled
by
hydrogen
bonds.
HOFs
have
the
advantages
high
crystallinity,
mild
reaction
conditions,
good
solution
processability,
and
reproducibility.
Coupled
with
reversibility
flexibility
bonds,
can
be
into
wide
diversity
structures.
Since
bonding
energy
bonds
is
lower
than
that
ligand
covalent
prone
to
collapse
after
desolventisation
stability
not
high,
which
limits
development
application
HOFs.
In
recent
years,
numerous
stable
functional
been
developed
π–π
stacking,
highly
interpenetrated
networks,
charge‐assisted,
ligand‐bond‐assisted,
molecular
weaving,
cross‐linking.
Charge‐assisted
ionic
introduce
electrostatic
attraction
improve
while
enriching
structural
functionality.
this
paper,
we
review
development,
principles
rational
design
assembly
charge‐assisted
HOFs,
introduces
different
building
block
construction
modes
Highlight
applications
in
gas
adsorption
separation,
proton
conduction,
biological
applications,
etc.,
prospects
for
diverse
structures
multifunctional
applications.
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Март 16, 2025
Purifying
C2H2
by
removing
trace
CO2
is
critically
needed
yet
challenged
their
analogous
physical
properties.
Herein,
we
report
a
commercial
resin
adsorbent
HP20
(Diaion®
HP-20
Resin)
loaded
with
polyethyleneimine
(PEI@HP20)
which
selectively
captures
and
excludes
C2H2.
PEI@HP20
possesses
high
adsorption
capacity
(4.35
mmol/g)
at
100
kPa
298
K
record
CO2/C2H2
uptake
ratio
compared
all
reported
CO2-selective
adsorbents.
The
ideal
adsorbed
solution
theory
selectivity
reaches
1.33×107.
pilot-scale
pressure-temperature
swing
on
2
kg
further
validated
that
it
can
obtain
>99.99%
purity
from
CO2/C2H2(1/99,
v/v)
mixtures
yield
of
344.7
g
per
cycle.
combination
multinuclear
solid-state
Nuclear
Magnetic
Resonance,
Fourier
Transform
infrared
spectroscopy
density
functional
calculations
reveal
the
performance
relies
dual
chemisorption/physisorption
mechanism.
This
work
highlights
promising
method
to
develop
green,
low
cost,
efficiency,
readily
scalable
adsorbent.
but
challenging
due
authors
production
for
selective
capture
traces
exclusion
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(52)
Опубликована: Ноя. 14, 2023
Hydrogen-bonded
organic
frameworks
(HOFs)
have
been
emerging
as
a
new
type
of
very
promising
microporous
materials
for
gas
separation
and
purification,
but
few
HOFs
structures
constructed
through
hydrogen-bonding
tetramers
explored
in
this
field.
Herein,
we
report
the
first
HOF
(termed
HOF-FJU-46)
afforded
by
with
4-fold
interpenetrated
diamond
networks,
which
shows
excellent
chemical
thermal
stability.
What's
more,
activated
HOF-FJU-46
exhibits
highest
xenon
(Xe)
uptake
2.51
mmol
g-1
xenon/krypton
(Kr)
selectivity
19.9
at
ambient
condition
among
reported
up
to
date.
Dynamic
breakthrough
tests
confirmed
Xe/Kr
HOF-FJU-46a,
showing
high
Kr
productivity
(110
mL
)
Xe
(1.29
),
well
good
recyclability.
The
single
crystal
X-ray
diffraction
molecular
simulations
revealed
that
abundant
accessible
aromatic
pyrazole
rings
pore
channels
HOF-FJU-46a
can
provide
multiple
strong
C-H⋅⋅⋅Xe
interactions
atoms.
ACS Materials Letters,
Год журнала:
2024,
Номер
6(4), С. 1388 - 1395
Опубликована: Март 11, 2024
Separation
of
methanol-to-olefins
(MTO)
products
to
obtain
high-purity
C2H4
and
C3H6
is
great
importance,
since
it
provides
an
alternative
process
for
such
important
industrial
raw
materials.
However,
developing
adsorbents
with
high
C2H4/C3H6
selectivity
productivity
remains
challenging.
Herein,
we
report
ultrastable
layered
hydrogen-bonded
framework
(HOF-NBDA),
which
features
preferred
pore
multiple
interlaminar
interactions
C3H6.
It
delivers
ultrahigh
uptake
(3.6
mmol
g–1)
at
10
kPa,
while
absorbs
only
0.3
g–1
shows
a
(11.1).
Experimental
breakthroughs
show
that
HOF-NBDA
can
efficiently
separate
C3H6/C2H4
(50/50,
v/v)
different
flow
rates,
temperatures,
as
well
relative
humidities
(5.7
mol
kg–1,
purity
≥99.95%).
Meanwhile,
4.5
kg–1
(purity
≥99.5%)
also
be
collected
during
the
desorption
process.
Additionally,
thanks
stability,
good
scalability,
easy
regeneration,
considered
promising
material
one-step
energy-efficient
separation
MTO
products.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(30)
Опубликована: Май 13, 2024
Separating
acetylene
from
carbon
dioxide
is
important
but
highly
challenging
due
to
their
similar
molecular
shapes
and
physical
properties.
Adsorptive
separation
of
can
directly
produce
pure
hardly
realized
because
relatively
polarizable
binds
more
strongly.
Here,
we
reverse
the
CO
