ACS Omega,
Journal Year:
2024,
Volume and Issue:
10(1), P. 673 - 682
Published: Dec. 26, 2024
One
use
of
CO2
as
a
starting
material
in
organic
transformations
is
the
synthesis
cyclic
carbonates
and
polycarbonates.
Due
to
low
reactivity
CO2,
this
transformation
must
be
carried
out
presence
an
efficient
catalyst.
Although
several
catalytic
systems
have
been
developed
past
decade,
reducing
pressure
at
which
reaction
remains
one
main
challenges
process.
In
context,
present
work,
we
describe
activity
mixed
metal
oxides
from
(1
atm)
epoxides
70
°C.
Using
these
materials
catalysts
represents
significant
benefits
since
they
are
very
stable,
cost-effective,
can
reused
cycles.
Sustainable Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
8(19), P. 4484 - 4495
Published: Jan. 1, 2024
A
series
of
“all-in-one”
hypercrosslinked
polymers
have
been
constructed
by
Friedel–Crafts
alkylation
and
quaternization
reactions,
which
exhibit
superior
CO
2
conversion
performance
effective
iodine
adsorption
capacity.
In
this
study,
different
commercial
microfibrous
fabric
cloths
were
efficiently
functionalized
with
polyethylenimine
(PEI)
and
optimized
respect
to
amine
loading
for
adsorptive
removal
of
CO2
from
flue
gas.
The
synthesized
adsorbents
characterized
by
various
techniques
such
as
field
emission
scanning
electron
microscopy
(FESEM),
atomic
force
(AFM),
Fourier
transform
infrared
(FTIR)
analysis,
tensile
properties
the
fabrics.
adsorption
capacities
amine-functionalized
sorbents
measured
using
a
thermogravimetric
analyzer.
It
was
found
that
an
optimal
PEI
60
wt
%
on
polyester-based
cloth
(PEFC)
resulted
in
highest
capacity
fastest
kinetics
while
studying
effects
partial
pressures
(in
range
5–100
kPa)
performance
under
atmospheric
pressure.
equilibrium
PEI-loaded
PEFC
at
75
°C
1.60
1.93
mmol
CO2/g
10%
CO2/N2
gas
mixture
pure
CO2,
respectively.
multicycle
temperature
swing
adsorption/desorption
also
investigated
simulated
both
dry
humid
conditions,
it
observed
working
uptake
after
15
cycles
1.07
1.15
sorbents.
Moreover,
breakthrough
study
three
flow
rates
single-
double-layer
bed
configurations
stream
pressure
shows
promising
results.
For
volumetric
100
mL/min,
saturation
points
obtained
0.50
0.84
sorbents,
