Due
to
the
strong
bonding
of
amino
groups
with
CO2,
alcohol
amine-based
absorbents
for
CO2
capture
suffer
disadvantage
high
regeneration
temperature
and
energy
consumption.
To
promote
energy-saving
regeneration,
a
novel
3-Dibutylamino-propylamine
(DBAPA)
aqueous
absorbent
featured
‘self-extraction’
property
was
proposed,
which
fresh
solution
maintained
liquid-liquid
two-phase
became
homogeneous
after
absorption.
self-extraction
regulation,
its
products
could
be
regenerated
at
low
below
boiling
point
water
(98
°C).
It
kept
81.98%
initial
loading
(1.27
molŸmol-1)
first
73.17%
sixth
cycle
98
°C,
much
higher
than
that
MEA
(28.96%).
Based
on
results
13C
NMR
quantum
chemical
calculations,
regulation
mechanism
DBAPA
clarified.
proved
there
vast
polarity
difference
between
H2O,
resulting
in
phase
separation
before
With
increasing
loading,
reacted
form
DBAPA-carbamate,
because
hydrogen
bonds
H2O.
The
amine
recovered
during
desorption
process,
intermolecular
H2O
decreased.
separated
from
main
upper
phase,
promoting
rate
°C.
this
property,
consumption
estimated
1.89
GJŸton-1
lower
(3.77
CO2).
indicated
characteristics
had
good
potential
capture.
Catalysts,
Год журнала:
2025,
Номер
15(3), С. 273 - 273
Опубликована: Март 13, 2025
The
increasing
concentration
of
carbon
dioxide
(CO2)
in
the
atmosphere
is
a
significant
contributor
to
global
warming
and
climate
change.
Effective
CO2
capture
storage
technologies
are
critical
mitigating
these
impacts.
This
review
explores
various
materials
used
for
capture,
focusing
on
latest
advancements
their
applications.
categorizes
into
chemical
physical
absorbents,
highlighting
unique
properties,
advantages,
limitations.
Chemical
such
as
amine-based
solutions
hydroxides,
have
been
widely
due
high
absorption
capacities
established
technological
frameworks.
However,
they
often
suffer
from
energy
requirements
regeneration
potential
degradation
over
time.
Recent
developments
ionic
liquids
(ILs)
polymeric
(PILs)
offer
promising
alternatives,
providing
tunable
properties
lower
energy.
Physical
including
advanced
solvents
like
nanofluids
well
industrial
processes
selexol,
rectisol,
purisol,
demonstrate
enhanced
efficiency
under
conditions.
Additionally,
adsorbents
activated
carbon,
zeolites,
metal-organic
frameworks
(MOFs),
nanotubes
(CNTs),
layered
double
hydroxides
(LDHs)
play
crucial
role
by
surface
areas
selective
through
or
interactions.
paper
summarizes
state
research
different
discusses
advantages
limitations
while
being
technologies.
also
discussed
multiple
studies
examining
use
catalysts
mechanisms
combination
with
sorbents,
how
approaches
enhance
desorption
processes.
Through
comprehensive
analysis,
this
aims
provide
valuable
insights
type
that
most
suitable
provides
directions
future
area.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(10), С. 11159 - 11169
Опубликована: Май 4, 2024
Herein,
we
present
a
hassle-free
approach
to
synthesize
Ni
nanoparticles
(NPs)
and
support
them
onto
oxidized
charcoal
(OC)
produce
Ni-oxidized
nanomaterials
(Ni-OC).
Subsequently,
Ni-NPs
Ni-OCs
are
characterized
using
powder
X-ray
diffraction
(PXRD),
Fourier-transform
infrared
(FTIR)
spectroscopy,
photoelectron
(XPS)
transmission
electron
microscopy
(TEM),
Brunauer–Emmett–Teller
(BET)
techniques.
The
size
distribution
curve
reveals
that
the
diameter
of
embedded
in
OC
falls
range
3–7
nm.
Surface
area
studies
show
Ni-OC
have
specific
surface
areas
36.5
248.9
m2/g,
respectively.
Interestingly,
exhibits
soft
ferromagnetic
nature
nickel.
used
as
catalysts
for
N-alkylation
reaction
between
aniline
benzyl
alcohol.
excellent
yields
(70–92%)
N-alkylated
products.
Notably,
catalyst
loading
only
0.0482
mmol
is
sufficient
activate
broad
substrate
scope
with
large
functional
group
tolerance.
In
addition,
developed
synthetic
protocol
can
be
further
exploited
catalytic
synthesis
1,2-disubstituted
benzimidazole
derivatives
(65–89%)
effective
It
has
been
observed
hydrogen-borrowing
mechanism
powers
both
processes.
outstanding
reusability
magnetic
recoverability
alcohol
more
than
seven
cycles.
contrast
Ni-NPs,
higher
activity
reaction.
This
could
explained
by
interactions
groups
available
on
charcoal,
which
enhance
Ni-OC.
Materials Research Express,
Год журнала:
2024,
Номер
11(5), С. 055006 - 055006
Опубликована: Май 1, 2024
Abstract
In
this
work,
a
nanocomposite
based
on
nickel
ferrite/activated
carbon
(NiF/AC)
was
used
to
modify
highly
sensitive
electrochemical
sensor
for
the
quantification
of
theophylline
(TPL)
in
pharmaceutical
tablets.
The
synthesized
materials
were
characterized
using
x-ray
diffraction,
Fourier
transform
infrared
spectroscopy,
scanning
electron
microscopy,
energy
dispersive
spectroscopy-elemental
mapping
and
surface
area
analysis
via
Brunauer–Emmett–Teller
method.
Cyclic
voltammetry
employed
study
electrocatalytic
properties
NiF/AC-GCE
toward
oxidation
TPL.
dependence
response
scan
rate
pH
also
investigated,
working
parameters
optimized.
linear
range
established
biosensor
from
0.5
5
μ
M
(R
2
=
0.997),
with
detection
limit
0.21
M.
present
method
tested
three
formulation
standard
samples
good
accuracy
acceptable
recovery.
Thus,
it
is
promising
candidate
determination
TPL
formulations.
Industrial & Engineering Chemistry Research,
Год журнала:
2024,
Номер
63(22), С. 9933 - 9942
Опубликована: Май 22, 2024
In
the
context
of
industrial
CO2
capture,
need
for
efficient
solvent
regeneration
at
lower
temperatures
poses
a
significant
challenge.
Catalyst-assisted
enhancement
desorption
kinetics
has
emerged
as
potential
solution.
This
study
introduces
series
cost-effective
and
readily
available
sepiolite
clay-based
catalysts
activated
via
simple
acid
treatments.
activation
significantly
enhances
both
surface
area
acidity,
laying
foundation
more
effective
catalysts.
Experimental
results
moderate
temperature
88
°C
demonstrate
effectiveness
prepared
catalysts,
resulting
in
remarkable
improvements:
up
to
163.6%
increase
rate,
an
83.6%
desorbed
quantity,
reduction
45.6%
heat
duty
compared
with
baseline
amine
Furthermore,
exhibit
facile
separability
through
filtration
sustained
stability
over
10
cycles.
To
shed
light
on
underlying
chemical
processes,
we
also
present
plausible
reaction
mechanism
acid-activated
sepiolite-catalyzed
reaction.
research
holds
promise
environmentally
friendly
processes
capture
applications.
