Applied Catalysis B Environment and Energy,
Год журнала:
2024,
Номер
348, С. 123838 - 123838
Опубликована: Апрель 24, 2024
The
emerging
integrated
CO2
capture
and
utilization
(ICCU)
potentially
contributes
to
net
zero
emissions
with
low
cost
high
efficiency.
catalytic
performance
in
ICCU
process
is
highly
restricted
by
the
equilibriums
of
carbonate
decomposition
dry
reforming
methane
(DRM).
Here,
we
engineer
a
unique
yolk-shell
dual
functional
nanoreactor
construction
improve
via
confined
catalysis.
By
tailoring
carbonates
kinetics
confining
diffusion
path,
∼92%
conversion
achieved
over
(Ni/Ca)@Si
shows
no
distinct
activity
loss
10
cycles
at
650
°C.
formed
Ca2SiO4
shells
restrain
sintering
CaO
yolks
acting
as
physical
barriers,
stabilize
Ni
particle
size.
It
also
confirmed
on
situ
DRIFTS
that
DRM
might
occur
carbonyls,
formates
CHO
intermediates,
which
species
are
dependent
Ni-carbonates
interfaces.
Carbon Capture Science & Technology,
Год журнала:
2024,
Номер
12, С. 100207 - 100207
Опубликована: Март 11, 2024
Large
amounts
of
CO2
were
discharged
into
the
atmosphere,
resulting
in
a
severe
greenhouse
effect
and
inducing
ecological
environmental
problems
that
threaten
human
survival.
Integrated
carbon
dioxide
capture
conversion
(ICCC)
with
Dual
Functional
Materials
(DFMs)
was
promising
process
to
emission
flue
gas
convert
it
value-added
chemicals,
reducing
energy
consumption
economic
cost.
The
catalytic
component
DFMs
enhances
hydrogen
source
activation
promotes
carbonate
hydrogenation
produce
high
chemicals.
achieved
regeneration
dual-functional
materials,
which
is
key
realizing
ICCC
process.
This
research
focuses
on
development
different
sources
(hydrogen
or
light
alkanes)
for
recent
years.
In
addition,
reaction
mechanism
components
modification
discussed
improve
in-situ
activity
Finally,
future
prospects
anticipated
guide
application
scenarios
ACS Catalysis,
Год журнала:
2024,
Номер
14(20), С. 15572 - 15589
Опубликована: Окт. 5, 2024
Integrated
CO2
capture
and
utilization
(ICCU)
can
achieve
the
conversion
of
captured
into
value-added
products
in
a
single
reactor,
enabling
it
to
be
one
fundamental
approaches
eliminating
emissions
future.
The
rational
design
dual-functional
materials
(DFMs)
combining
adsorption
catalytic
sites
is
crucial
realizing
an
efficient
ICCU
process.
This
Perspective
promotes
understanding
through
integrated
methanation,
reverse
water
gas
shift,
dry
reforming
methane,
other
technologies,
focusing
on
selection
matching
between
DFMs
for
enhanced
performance.
Interactions
are
pivotal
mechanism
studies
directing
catalyst
design.
proximity
effect
induced
adsorbent–catalyst
interaction
comprehensively
evaluated
provide
perspective
principle
DFMs.
will
theoretical
foundations
selecting
DFMs,
promoting
comprehensive
enhancement
performance,
thus
facilitating
carbon
reduction
goals.
Chemical Engineering Journal,
Год журнала:
2024,
Номер
491, С. 151668 - 151668
Опубликована: Апрель 26, 2024
Integrated
carbon
capture
and
utilisation
(ICCU)
is
an
emerging
technology
for
simultaneous
CO2
adsorption
conversion
into
value-added
products.
This
provides
a
more
sustainable
approach
compared
to
storage.
Dual-functional
materials
(DFMs)
that
couple
sorbents
(e.g.
CaO)
catalysts
Ni)
enable
direct
of
sorbed
reactions
like
dry
reforming
methane
(DRM).
However,
the
potential
interactions
between
sorbent
catalyst
components
within
DFMs
may
induce
distinct
mechanisms
individual
materials.
Elucidating
these
synergies
interfacial
phenomena
vital
guiding
rational
design
DFMs.
article
investigates
respective
roles
Ni/SiO2
sol–gel
synthesised
CaO
in
integrated
via
(ICCU-DRM)
using
decoupling
approach.
Through
decoupled
reactor
experiments,
it
found
activates
react
with
deposits
from
CH4
decomposition,
achieving
maximal
CO
H2
yields
43.41
mmol
g−1
46.78
as
well
87.2
%
at
650
°C.
Characterisation
shows
coke
would
encapsulate
Ni
nanoparticles
be
active
Boudouard
reaction,
indicating
sufficient
catalyst-sorbent
contact
necessary
spillover.
In-situ
DRIFTS
reveals
no
obvious
CH4-CaCO3
reaction
occurs,
chemisorption
on
enables
reverse
which
further
verified
by
DFT
calculations.
The
findings
elucidate
dependent
synergistic
CaO/CaCO3
ICCU-DRM,
highlight
importance
catalyst-adsorbent
optimising
dual-functional
