Surface Science and Technology,
Год журнала:
2023,
Номер
1(1)
Опубликована: Окт. 12, 2023
Abstract
Catalytic
CO
2
hydrogenation
to
valuable
chemicals
is
an
excellent
approach
address
the
increasingly
serious
“greenhouse
effect”
caused
by
emission
generated
from
utilizations
of
nonrenewable
fossil
energies,
while
such
a
process
limited
chemical
inertia
and
thermal
stability
molecule
complex
routes.
In
this
review,
we
first
summarized
recent
progresses
metal-oxide
nanocatalysts
considered
as
category
most
promising
catalysts
in
value-added
C1
including
CH
4
/CO,
formic
acid/formate,
methanol.
These
studies
involve
with
different
structural
factors
affecting
interfacial
catalysis
structures
both
metals
(type,
particle
size,
morphology/crystal
plane,
bimetal
alloy)
supports
crystal
phase,
composite)
their
(strong)
metal-support
interactions
so
identify
key
factor
determining
reaction
activity,
product
selectivity,
catalytic
hydrogenation.
Finally,
further
discuss
challenging
coupling
future
research
opportunities
for
tunable
conversion.
ACS Catalysis,
Год журнала:
2023,
Номер
13(10), С. 7132 - 7138
Опубликована: Май 11, 2023
Developing
efficient
non-precious-metal
catalysts
capable
of
selectively
converting
CO2
into
fuels
and
chemicals
is
desirable
yet
remains
a
challenge.
Ni-based
usually
exhibit
high
activity
in
methanation
reactions
but
low
selectivity
stability
the
reverse
water-gas
shift
(RWGS)
reaction.
Herein,
we
report
Ni
single-atom
catalyst
with
Ni–Nx
motifs
confined
N-doped
carbon
nanotubes
as
an
active,
selective,
stable
for
RWGS
reaction,
achieving
almost
100%
CO
STY
1.88
molCO
gNi–1
h–1
at
500
°C
atmospheric
pressure.
In
addition
to
weak
adsorption,
strong
adsorption
H2
active
site
were
found
be
responsible
catalytic
selectivity.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2023,
Номер
12(1), С. 166 - 177
Опубликована: Дек. 18, 2023
Reverse
water–gas
shift
(RWGS)
reaction
is
considered
as
an
effective
solution
for
conversion
of
greenhouse
gas
the
CO2
to
CO,
but
it
still
suffers
from
relatively
low
activity
and
selectivity
at
temperatures.
Herein,
we
report
catalytic
performance
mechanism
NiInx/SBA-15
with
different
Ni
In
(indium)
molar
ratios
RWGS
a
temperature.
The
results
showed
that
increment
In/Ni
ratio
in
intermetallic
alloy
compounds
(IMCs)
inhibits
CO*
adsorption
through
"active
site
isolation"
effect,
thus
improving
CO.
terms
In–Ni
IMCs,
acts
active
center
isolated
by
atoms
hydrogenation
reaction.
XRD
HRTEM
formed
IMC
were
highly
dispersed
on
large
surface
area
SBA-15.
It
was
also
demonstrated
H2-TPR
addition
enhanced
interaction
between
support,
stability
catalyst
good
anti-sintering.
Meanwhile,
aggregation
charge
density
obtained
additives,
verified
XPS
DFT
simulation.
After
optimizing
ratio,
NiIn0.5/SBA-15
exhibited
29%
400
°C,
0.1
MPa,
24,000
mL/gcat·h,
CO
over
99%
production
rate
about
47
mmol/gcat·h,
which
superior
those
most
reported
nickel-based
catalysts.
At
same
time,
long-time
maintained
well
after
25
h
situ
DRIFTS
reveals
change
intermediates
HCOO*
COOH*
during
activation
introduction
In,
leading
rapid
desorption
avoiding
further
form
CH4,
can
be
CO-TPD.
Ni–In
IMCs
weak
capacity
are
main
reason
achieving
high
Chemistry - An Asian Journal,
Год журнала:
2024,
Номер
19(4)
Опубликована: Янв. 27, 2024
Abstract
With
the
continuous
increase
in
CO
2
emissions,
primarily
from
combustion
of
coal
and
oil,
ecosystem
faces
a
significant
threat.
Therefore,
as
an
effective
method
to
minimize
issue,
Reverse
Water
Gas
Shift
(RWGS)
reaction
which
converts
towards
attracts
much
attention,
is
environmentally‐friendly
mitigate
climate
change
lessen
dependence
on
fossil
fuels.
Nevertheless,
inherent
thermodynamic
stability
kinetic
inertness
big
challenge
under
mild
conditions.
In
addition,
it
remains
another
fundamental
RWGS
owing
selectivity
issue
caused
by
further
hydrogenation
CH
4
.
Up
till
now,
series
catalysis
systems
have
been
developed
for
reduction
produce
CO.
Herein,
research
progress
well‐performed
heterogeneous
catalysts
were
summarized,
including
catalyst
design,
catalytic
performance
mechanism.
This
review
will
provide
insights
into
efficient
utilization
promote
development
reaction.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 19, 2025
Abstract
Currently,
thermal
catalysis
is
the
predominant
method
for
achieving
reverse
water–gas
shift
(RWGS)
reaction
reduction
of
carbon
dioxide
(CO
2
)
to
monoxide
(CO),
which
a
crucial
intermediate
in
synthesis
other
high
value‐added
chemicals
via
Fischer–Tropsch
synthesis.
To
extend
applicability
CO
RR)
CO,
researchers
have
explored
RR
that
utilizes
external
fields
addition
fields.
This
review
commences
by
providing
an
overview
research
background
pertinent
and
then
primary
mechanisms
potential
pathways
associated
with
process
are
summarized.
Furthermore,
impact
various
fields,
including
traditional
light
photothermal
coupling
solar
thermochemical
laser
electric
photoelectric
electromagnetic
plasma
on
investigated.
Finally,
summary
future
perspectives
as
influenced
presented.
It
anticipated
this
will
provide
valuable
insights
focused
preparation
high‐value‐added
through
enhanced
ACS Catalysis,
Год журнала:
2024,
Номер
14(11), С. 8463 - 8479
Опубликована: Май 16, 2024
The
supported
Ni/In2O3
catalysts
are
of
great
interest
in
CO2
hydrogenation,
but
the
formation
In0
or
Ni–In
alloy
phases
due
to
over-reduction
would
lead
rapid
catalyst
deactivation.
Herein,
thin
Al2O3
films
were
deposited
on
surface
by
atomic
layer
deposition
(ALD)
as
an
antireduction
agent,
which
enables
In2O3
maintain
a
significant
abundance
active
In3+
species
even
during
high-temperature
H2
treatment
(400
°C,
2
h),
thereby
effectively
resisting
deactivation
caused
In2O3.
Various
characterization
methods
confirm
antiover-reduction
effect
ALD-Al2O3
films,
namely,
inhibiting
and
In3Ni2
alloys
facilitating
reoxidation
low-valence
In
form
In2O3–x
phase
presence
atmosphere.
As
treated
with
at
400
5Al2O3/Ni/In2O3-R400
exhibited
STYMeOH
7.39
gMeOH
h–1gNi–1
methanol
selectivity
64%
(reaction
conditions:
3
MPa,
300
12,000
mL
gcat–1h–1).
Particularly,
increased
11.5
times
compared
that
Ni/In2O3-R400
without
coating
(0.59
h–1gNi–1).
Density
functional
theory
(DFT)
calculations
validate
effectiveness
specific
charge
transfer
tendencies
suppressing
high-valence
species.
Through
analysis
crystal
orbital
Hamilton
population
(COHP)
projected
density
states
(PDOS)
electronic
structures
adsorbate
species,
Al2O3/Ni/In2O3
is
shown
significantly
enhance
activation
further
catalytic
reactions.
Accordingly,
this
study
unveils
mechanism
In2O3-based
provides
method
regulate
their
reduction
level
depositing
catalysts.