ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(8), С. 4607 - 4614
Опубликована: Апрель 8, 2024
The
cycloaddition
reaction
involving
CO2
and
epoxides
to
generate
cyclic
carbonates
represents
a
viable
method
for
utilization.
However,
the
challenge
still
lies
in
catalyzing
this
under
solvent-free,
cocatalyst-free,
mild
conditions.
In
study,
we
constructed
robust
mesoporous
covalent
organic
framework
(COF)
platform
that
features
flexible
quaternary
ammonium
groups
covalently
affixed
inside
pore
walls
of
these
COFs.
By
meticulously
adjusting
density
entities,
struck
balance
between
active
site
porosity
This
guaranteed
access
sites,
resulting
an
effective
heterogeneous
catalyst.
Utilizing
COF-50%QA
(where
QA
denotes
ammonium)
catalyst
conditions
100
°C
0.1
MPa
CO2,
CO2–epoxide
demonstrated
superior
performance
with
exceptional
yield
98%
selectivity
surpassing
99%.
work
not
only
broadens
scope
COF-based
catalysts
reactions
but
also
offers
valuable
understanding
into
strategy
design
structure–property
relationships
such
catalysts.
Green Chemistry,
Год журнала:
2022,
Номер
24(9), С. 3433 - 3460
Опубликована: Янв. 1, 2022
Porous
poly(ionic
liquid)s,
combining
the
features
of
porous
polymers
and
ionic
moieties
resembling
structures
functions
liquids,
have
exhibited
promising
potential
in
CO
2
fixation
via
cycloadditions
with
epoxides.
ACS Applied Materials & Interfaces,
Год журнала:
2022,
Номер
14(50), С. 55674 - 55685
Опубликована: Дек. 10, 2022
Rationally
integrating
desired
functional
components
into
a
composite
material
can
endow
the
tailored
function
to
achieve
corresponding
purpose.
This
is
first
case
where
series
of
[AeImBr]X%-TAPT-COFs
(X
=
0,
17,
33,
50,
67,
83,
100)
were
fabricated
by
chemically
amino-functionalized
imidazole
ionic
liquid
(NH2-IL)
onto
channel
walls
mesoporous
covalent
organic
framework
materials
([HO]X%-TAPT-COFs).
By
virtue
polar
groups
(amino
groups)
and
abundant
cations
NH2-IL
its
microporous
nature,
obtained
exhibit
higher
CO2
capture
activity
than
[HO]X%-TAPT-COFs.
Correspondingly,
equilibrium
capacity
increases
from
62.6
117.4
mg/g,
which
crucial
storage
enough
around
catalytic
active
sites.
Additionally,
synergistic
effect
-NH2
Br-
in
also
improve
cycloaddition
reaction
rate.
The
characteristics
contribute
efficient
generation
cyclic
carbonate
through
heterogeneously
catalyzing
CO2-epoxide
without
any
solvents
cocatalysts.
Specifically,
[AeImBr]83%-TAPT-COF
has
mg/g
cyclochloroallyl
yield
99.1%.
As
result
use
chemical
grafting
method,
possess
excellent
stability
cycle
life.
reach
112.7
mg
CO2/g
adsorbent
95.0%
at
eighth
cycle.
ACS Catalysis,
Год журнала:
2023,
Номер
13(19), С. 13021 - 13033
Опубликована: Сен. 21, 2023
Covalent
organic
frameworks
(COFs)
are
a
class
of
promising
porous
crystalline
materials
for
both
capturing
and
converting
CO2
into
high-value-added
products.
However,
long
synthesis
time
the
need
cocatalyst
restrict
its
potential
conversion.
Herein,
bipyridine-based
TAPT-BP-COF
with
high
crystallinity
as
skeleton
is
rapidly
synthesized
within
only
1
h
by
aid
supercritical
(scCO2)
activation.
Then,
production
dicationic
TAPT-BP2+-COF
accomplished
quaternization
reaction.
The
capture
capacity
improved
55.6%
due
to
CO2-philic
groups
(imine
triazine
groups),
polar
(−OH),
charged
skeleton,
suitable
pore
size,
thus
ensuring
sufficient
around
catalytic
active
sites.
Additionally,
outstanding
structure-enhanced
conversion
performance
observed
presence
synergistic
effect
between
–OH
Br–
in
skeleton.
rate-determining
step
cycloaddition
significantly
accelerated
without
any
solvents
cocatalysts
compared
individual
[OH-BP]2+[Br]2–
(BP2+
moiety).
Specifically,
efficiently
generates
cyclic
carbonate
heterogeneously
catalyzing
CO2-epoxide
yield
99.3%
has
excellent
stability
that
can
be
reused
ten
times
significant
activity
reduction.
This
work
provides
novel
perspective
targeted
design
rapid
COF-based
catalysts
efficiency
durability
Green Chemistry,
Год журнала:
2024,
Номер
26(9), С. 5022 - 5102
Опубликована: Янв. 1, 2024
This
tutorial
review
provides
a
comprehensive
and
authoritative
summary
on
the
exciting
research
activities
in
fields
of
poly(ionic
liquid)s
(PILs),
covering
their
synthesis
applications
number
areas.
Advanced Materials,
Год журнала:
2024,
Номер
36(15)
Опубликована: Янв. 16, 2024
Abstract
Integrating
the
advantages
of
homogeneous
and
heterogeneous
catalysis
has
proved
to
be
an
optimal
strategy
for
developing
catalytic
systems
with
high
efficiency,
selectivity,
recoverability.
Supramolecular
metal‐organic
cages
(MOCs),
assembled
by
coordination
metal
ions
organic
linkers
into
discrete
molecules,
have
performed
solvent
processability
due
their
tunable
packing
modes,
endowing
them
potential
act
as
or
catalysts
in
different
systems.
Here,
design
synthesis
a
series
stable
{Cu
3
}
cluster‐based
tetrahedral
MOCs
varied
structures
are
reported.
These
MOCs,
catalysts,
not
only
show
activity
selectivity
regardless
substrate
size
during
CO
2
cycloaddition
reaction,
but
also
can
easily
recovered
from
reaction
media
through
separating
products
co‐catalysts
one‐step
work‐up.
This
is
because
that
these
solubilities
solvents
solid
state.
Moreover,
entire
system
very
clean,
purity
cyclic
carbonates
97%
without
further
purification.
work
provides
unique
novel
supramolecular
used
recycled
manner.
Journal of Materials Chemistry A,
Год журнала:
2021,
Номер
9(37), С. 20941 - 20956
Опубликована: Янв. 1, 2021
This
review
describes
the
recent
advances
made
with
regard
to
design
and
synthesis
of
tailored
covalent
organic
frameworks
for
simultaneously
capturing
converting
CO
2
into
cyclic
carbonates.
