A novel non-aqueous tertiary amine system for low energy CO2 capture developed via molecular dynamics simulation
Separation and Purification Technology,
Год журнала:
2024,
Номер
354, С. 128996 - 128996
Опубликована: Июль 27, 2024
The
current
technology
for
capturing
CO2
using
alkanolamine
aqueous
solutions
is
known
its
high
energy
and
capital
costs.
As
a
result,
developing
new
absorbents
low-energy
removal
remains
challenge.
An
additional
activator
can
promote
absorption
performance.
However,
it
based
on
experimental
screening.
In
this
study,
molecular
dynamic
simulation,
we
have
successfully
developed
novel
energy-efficient
absorbent
by
combining
N,
N-Dimethylethanolamine
(DMEA),
ethylene
glycol
(EG),
with
different
activators,
including
ethanolamine
(MEA),
ethylenediamine
(EDA),
piperazine
(PZ).
addition
of
these
activators
significantly
enhances
the
performance
DMEA-based
absorbents.
Among
them,
DMEA-PZ-EG
exhibits
maximum
rate
capacity,
achieving
6.35
(g-CO2/(kg-soln.·min.))
96.5
(g-CO2/kg-soln.),
respectively,
representing
230.1
%
206.35
improvement
over
2M
DMEA-EG
absorbent.
Moreover,
compared
to
30
wt%
MEA
solution,
consumption
reduced
33.93–51.56
%.
reaction
products
were
characterized
various
spectroscopic
techniques,
Attenuated
Total
Reflectance
Fourier
Transform
Infrared
spectroscopy
(ATR-FTIR),
1D
2D
Nuclear
Magnetic
Resonance
(1H
13C
NMR).
NMR
results
confirmed
that
DMEA
becomes
protonated
after
in
mixture.
deprotonation
EG
CO2,
resulting
forming
carbonates.
This
assumption
has
been
IR
spectrum.
Furthermore,
effect
analysed
at
level
through
dynamics
simulation
method
proposed
predict
non-aqueous
solvents.
Using
presents
promising
approach
improving
capture
efficiency,
reducing
consumption,
facilitating
regeneration.
Язык: Английский
Transforming Waste to Wealth: Harnessing Carbon Dioxide for Sustainable Solutions
Results in Surfaces and Interfaces,
Год журнала:
2024,
Номер
unknown, С. 100321 - 100321
Опубликована: Окт. 1, 2024
Язык: Английский
Synergistic Ni-Ce Dual sites in hierarchical HZSM-5: Breaking the energy-efficiency bottleneck in CO2-rich amine regeneration
Separation and Purification Technology,
Год журнала:
2025,
Номер
unknown, С. 132962 - 132962
Опубликована: Апрель 1, 2025
Язык: Английский
CO2 concentration-based comparison of EMAR and MCFC technologies for carbon capture: Energy and life cycle cost assessments
Journal of CO2 Utilization,
Год журнала:
2025,
Номер
96, С. 103097 - 103097
Опубликована: Апрель 27, 2025
Язык: Английский
Degradation of amine-functionalized adsorbents in carbon capture and direct air capture applications: Mechanism and solutions
Separation and Purification Technology,
Год журнала:
2024,
Номер
354, С. 129586 - 129586
Опубликована: Сен. 7, 2024
Язык: Английский
Nonaqueous Mixed Amine CO2 Capture Technology Based on N-Methylformamide
Energy & Fuels,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 25, 2024
A
nonaqueous
mixed
amine
solution
based
on
N-methylformamide
(NMF)
was
developed
for
CO2
capture.
The
absorption
and
desorption
performances
of
seven
amine-based
solvents
were
evaluated.
PZMN-12
(12
wt
%
PZ
+
18
MEA
70
NMF)
exhibited
the
improved
performance,
achieving
a
rate
99.76%
at
110
°C.
kinetics
with
analyzed,
revealing
an
activation
energy
44.013
kJ/mol,
which
is
25.06%
lower
than
that
monoethanolamine
(MEA)
solution.
determined
to
be
135.816
kJ/mol.
Energy
consumption
reduced
1.67
GJ/tCO2
by
combining
rich
solvent
split-flow
(RSSF)
lean
vapor
compression
(LVC)
processes.
recommended
as
promising
new
Язык: Английский