Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 28, 2025
Solid-liquid
biphasic
absorbents
are
a
promising
solution
for
overcoming
the
high-energy
consumption
challenge
faced
by
liquid
amine-based
CO2
capture
technologies.
However,
their
practical
applications
often
hindered
difficulties
in
separating
viscous
solid-phase
products.
This
study
introduces
novel
nonaqueous
absorbent
system
(PD/PZ/NMP)
composed
of
4-amino-1-methylpiperidine
(PD),
piperazine
(PZ),
and
N-methyl-2-pyrrolidone
(NMP),
engineered
to
produce
easily
separable
powdery
The
PD/PZ/NMP
achieves
loading
0.86
mol-CO2/mol-amine,
with
91%
concentrated
solid
phase.
It
demonstrates
excellent
cyclic
stability,
maintaining
regeneration
efficiency
after
five
cycles,
reduces
energy
52%
compared
conventional
monoethanolamine
absorbent.
Remarkably,
PZ
plays
crucial
role
regulating
crystal
composition
products,
transforming
them
from
state
crystalline
powder.
Characterization
density
functional
theory
analysis
explain
crystal-phase
regulation
mechanism:
PD
absorbs
form
zwitterions
(PDH+COO-),
affording
forms
protonated
amines
(PZH+)
monocarbamates
(PZCOO-),
which
interact
PDH+COO-
via
hydrogen
bonding
These
findings
demonstrate
efficacy
provide
robust
theoretical
framework
fabricating
solid-liquid
tailored
applications.
Sustainability,
Год журнала:
2025,
Номер
17(2), С. 702 - 702
Опубликована: Янв. 17, 2025
With
the
acceleration
of
global
industrialization,
issue
carbon
dioxide
(CO2)
emissions
has
become
increasingly
severe,
highlighting
urgent
need
to
develop
effective
CO2
capture
and
utilization
technologies.
absorption-mineralization
technology,
as
an
emerging
method,
can
convert
into
solid
minerals,
achieving
both
long-term
storage
emission
reduction
goals.
This
paper
systematically
reviews
latest
research
progress
in
with
a
particular
focus
on
its
application
potential
sustainability
steel
industry.
Additionally,
it
summarizes
status
optimization
strategies
various
monoamine
mixed
amine
absorbents
explores
main
process
technologies,
reaction
mechanisms,
key
parameters
industrial
mineralization.
Through
multiscale
modeling
analysis,
study
delves
mechanisms
influencing
factors
mineralization
process,
providing
theoretical
support
for
technology.
The
indicates
that
technology
not
only
effectively
reduces
greenhouse
gas
but
also
offers
raw
materials
industries
such
construction,
thus
promoting
sustainable
resource
development.
Although
this
shows
good
prospects,
still
faces
challenges
economic
viability
technical
feasibility
during
practical
implementation.
aims
clarify
current
hotspots
challenges,
future
large-scale
application.
