Journal of CO2 Utilization,
Год журнала:
2024,
Номер
83, С. 102773 - 102773
Опубликована: Май 1, 2024
In
this
study,
synthetic
CaCO3
materials
were
utilized
as
precursors
for
CaO-based
CO2
sorbents.
The
investigation
examined
how
various
operating
parameters—such
synthesis
temperature
(ST),
stirring
rate
(SR),
and
surfactant
percentage
(SP)—impact
the
properties
of
adsorbents.
Samples
firstly
characterized
by
X-ray
diffraction
Scanning
Electron
Microscopy
(SEM),
which
revealed
that
prevalence
calcite
or
aragonite
crystal
phases
in
can
be
tuned
adequately
choosing
dose
(Triton-X100®),
so
it
used
a
habit
growth
modifier.
calcination
process
applied
to
leads
formation
partially
sinterized
cubic
crystals
CaO,
accompanied
minor
quantities
(<
5
%)
additional
compounds
like
Ca(OH)2
CaSO4.
Specific
surface
area
(SBET)
porosity
determined
measuring
N2
adsorption
isotherms.
A
sample
with
an
unprecedented
value
SBET
large
116
m2/g
was
prepared
under
optimal
conditions.
pore
volumes
successfully
correlated
uptake
capacity
samples.
is
more
influential
experiments
carried
out
diluted
atmosphere.
When
pure
used,
influence
meso-
micropore
(Vme
Vmi)
clearly
predominant,
suggests
latter
case
diffusion
through
porous
texture
samples
plays
remarkable
role.
double-way
approach
Response
Surface
Methodology
(RSM)
use
Artificial
Neural
Networks
(ANNs)
has
been
analyze
Within
operational
interval,
excellent
results
obtained
flow,
RSM
ANNs
have
demonstrated
very
efficient
tool
correlate
behavior
sorbents
Valuable
information
on
(i)
importance
different
factors
study;
(ii)
their
CaO-derived
sorbents;
(iii)
subsequent
capture
performance
obtained.
suggest
four
parameters
statistically
significant
uptake.
These
are
SR,
square
its
interaction
SP,
SP.
Additionally,
study
assessed
stability
over
11
consecutive
calcination-carbonation
cycles.
By
strategy
conditions,
almost
negligible
shrinkage
effect
achieved,
resulting
sustained
throughout
Separation and Purification Technology,
Год журнала:
2023,
Номер
333, С. 125934 - 125934
Опубликована: Дек. 3, 2023
Marble
dust
is
a
low-cost,
robust,
and
environmentally
friendly
natural
material
for
integrated
carbon
capture
utilization
(ICCU).
This
study
demonstrates
the
effect
of
oxygen
water
in
flue
gas
on
ICCU
performance
marble
when
it
with
reverse
shift
reaction
(RWGS),
which
could
potentially
be
scaled
up
application
dust.
The
inclusion
vapor
augmented
ability
calcined
(CM)
to
eliminate
12.8
mmol
g−1
CO2
from
achieved
highest
CO
yield
10.2
almost
100
%
selectivity.
introduction
O2,
despite
lowering
efficiency,
retained
pore
structure
CM,
boosting
lasting
producing.
With
inert
MgO
as
stabilizer
segregation
between
two-layered
CaO
crystalline
alleviated
sintering
deposition,
enhanced
diffusion
superior
structural
stability
over
consecutive
cycles
than
raw
CaO.
Carbon Capture Science & Technology,
Год журнала:
2024,
Номер
12, С. 100221 - 100221
Опубликована: Апрель 10, 2024
This
study
introduces
an
Integrated
Carbon
Capture
and
Utilisation-Reverse
Water
Gas
Shift
(ICCU-RWGS)
approach,
a
novel
method
for
in
situ
CO2
adsorption
conversion,
leveraging
the
synergistic
effects
of
CaO
within
NaCl-CaCl2
molten
salt
blend
to
enhance
capture
conversion
efficiency.
Building
upon
this
foundation,
we
optimize
concentration
operating
temperature
maximize
uptake
performance.
The
research
focuses
on
integrating
with
(mass
ratio
4:6)
improve
sorption
Findings
show
significant
enhancements
CO
yield
presence
compared
systems
without
it.
optimal
are
identified
maximum
yield.
Characterisation
techniques
like
in-situ
infrared
spectroscopy,
XRD,
SEM
provide
insights
into
behavior
salt,
revealing
solubility
partial
carbonate
formed
from
CaO,
dispersion
particles,
their
morphological
characteristics.
Overall,
demonstrates
potential
CaO-molten
integration
improving
ICCU-RWGS
process
efficiency
contributes
development
more
effective
sustainable
ICCU
technologies.
Journal of CO2 Utilization,
Год журнала:
2024,
Номер
83, С. 102773 - 102773
Опубликована: Май 1, 2024
In
this
study,
synthetic
CaCO3
materials
were
utilized
as
precursors
for
CaO-based
CO2
sorbents.
The
investigation
examined
how
various
operating
parameters—such
synthesis
temperature
(ST),
stirring
rate
(SR),
and
surfactant
percentage
(SP)—impact
the
properties
of
adsorbents.
Samples
firstly
characterized
by
X-ray
diffraction
Scanning
Electron
Microscopy
(SEM),
which
revealed
that
prevalence
calcite
or
aragonite
crystal
phases
in
can
be
tuned
adequately
choosing
dose
(Triton-X100®),
so
it
used
a
habit
growth
modifier.
calcination
process
applied
to
leads
formation
partially
sinterized
cubic
crystals
CaO,
accompanied
minor
quantities
(<
5
%)
additional
compounds
like
Ca(OH)2
CaSO4.
Specific
surface
area
(SBET)
porosity
determined
measuring
N2
adsorption
isotherms.
A
sample
with
an
unprecedented
value
SBET
large
116
m2/g
was
prepared
under
optimal
conditions.
pore
volumes
successfully
correlated
uptake
capacity
samples.
is
more
influential
experiments
carried
out
diluted
atmosphere.
When
pure
used,
influence
meso-
micropore
(Vme
Vmi)
clearly
predominant,
suggests
latter
case
diffusion
through
porous
texture
samples
plays
remarkable
role.
double-way
approach
Response
Surface
Methodology
(RSM)
use
Artificial
Neural
Networks
(ANNs)
has
been
analyze
Within
operational
interval,
excellent
results
obtained
flow,
RSM
ANNs
have
demonstrated
very
efficient
tool
correlate
behavior
sorbents
Valuable
information
on
(i)
importance
different
factors
study;
(ii)
their
CaO-derived
sorbents;
(iii)
subsequent
capture
performance
obtained.
suggest
four
parameters
statistically
significant
uptake.
These
are
SR,
square
its
interaction
SP,
SP.
Additionally,
study
assessed
stability
over
11
consecutive
calcination-carbonation
cycles.
By
strategy
conditions,
almost
negligible
shrinkage
effect
achieved,
resulting
sustained
throughout
