Processes,
Год журнала:
2024,
Номер
12(11), С. 2604 - 2604
Опубликована: Ноя. 20, 2024
Different
types
of
porous
materials
have
been
developed
for
the
efficient
separation
CO2
from
mixtures
gases.
Nevertheless,
most
cannot
be
used
extensive
industrial
applications
due
to
their
non-negligible
disadvantages,
such
as
complex
synthesis
routes,
expensive
monomers,
and/or
costly
catalysts.
Therefore,
a
strategy
fabricating
series
polyhedral
oligomeric
silsesquioxane
(POSS)-based
organic
polymer
(PBPOPs)
was
through
simple
condensation
reaction
octaphenylsilsesquioxane
and
different
bromine-containing
monomers.
It
found
that
PBPOP-2
exhibits
best
adsorption
amount
41
cm3·g−1
at
273
K
760
mmHg
based
on
accessible
specific
surface
area,
large
pore
volumes,
sizes.
Furthermore,
CO2/N2
selectivity
complete
regeneration
under
mild
conditions,
which
demonstrates
potential
selective
gas
mixtures.
This
work
provides
new
route
developing
POSS-based
POPs
CO2-capture
applications.
Chemical Science,
Год журнала:
2024,
Номер
15(15), С. 5653 - 5659
Опубликована: Янв. 1, 2024
A
novel
hydrophobic
carborane-hybrid
microporous
metal–organic
framework
ZNU-10
was
prepared
for
reversed
C
2
H
6
adsorption
and
efficient
4
/C
separation
under
humid
conditions.
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 5, 2025
The
separation
of
acetylene
(C2H2),
ethylene
(C2H4),
and
carbon
dioxide
(CO2)
is
critical
in
the
chemical
industry,
driven
by
increasing
demand
for
high-purity
C2H2
C2H4.
While
metal-organic
frameworks
(MOFs)
offer
an
energy-efficient
approach
adsorptive
gas
separation,
achieving
sub-angstrom
precision
pore
size
adjustment
remains
challenging.
In
this
work,
we
leverage
two
synergistic
mechanisms
a
double-interpenetrated
framework:
(1)
global
structural
flexibility,
arising
from
dynamic
displacement
subnetworks
to
tailor
dimensions,
(2)
local
enabled
counterion
ligand
rotation,
modulate
aperture
binding
affinity
precise
molecular
discrimination.
A
series
isostructural
MOFs,
NUS-33-CF3SO3
NUS-34-BF4,
were
designed
enable
one-step
purification
C2H4
concurrent
recovery
ternary
mixtures.
Within
pores
optimal
interplay
between
counterion-mediated
host-guest
interactions
framework
adaptability
enables
simultaneous
regulation
static
kinetic
adsorption
properties.
Notably,
NUS-34-BF4
achieves
productivity
2.62
mmol/g
uptake
1.26
mmol/g.
This
study
highlights
pivotal
yet
underexplored
role
counterions
as
gatekeepers,
offering
tunable
strategy
engineer
environments
flexible
MOFs
advanced
separations.
