Materials Today,
Год журнала:
2024,
Номер
79, С. 16 - 27
Опубликована: Авг. 10, 2024
The
commercialization
of
Ni-based
catalysts
in
CO2
dry
reforming
methane
(DRM)
suffers
from
their
quick
deactivation.
Here,
we
reveal
each
reaction
pathway
for
DRM
based
on
the
Ni
catalyst
composition
and
geometry
under
working
conditions,
through
one
platform
combining
situ
high
resolution
Cs
corrected
environmental
transmission
electron
microscopy
energy-loss
spectroscopy
coupled
with
mass
spectroscopy.
formation
Ni3C
has
been
found
to
inhibit
decomposition
CH4,
promote
onion-like
carbon
encapsulate
catalysts,
leading
deactivation
catalysts.
Designing
suitable
supports
or
promoters
keep
surface
structure
Ni-NiO
cycle
can
drive
simultaneously
amorphous
deposition-consumption
minimise
coke
formation.
This
research
is
not
only
developing
resistance
DRM,
but
also
significant
investigating
many
catalysis
challenges
both
engineering.
Chemistry - An Asian Journal,
Год журнала:
2023,
Номер
19(16)
Опубликована: Сен. 23, 2023
As
energy
demand
continues
to
rise
and
the
global
population
steadily
grows,
there
is
a
growing
interest
in
exploring
alternative,
clean,
renewable
sources.
The
search
for
alternatives,
such
as
green
hydrogen,
both
fuel
an
industrial
feedstock,
intensifying.
Methane
steam
reforming
(MSR)
has
long
been
considered
primary
method
hydrogen
production,
despite
its
numerous
advantages,
activity
stability
of
conventional
Ni
catalysts
are
major
concerns
due
carbon
formation
metal
sintering
at
high
temperatures,
posing
significant
drawbacks
process.
In
recent
years,
attention
given
bimetallic
potential
solution
overcome
challenges
associated
with
methane
reforming.
Thus,
this
review
focuses
on
advancements
production
through
explores
various
aspects
including
reactor
type,
catalyst
selection,
impact
different
operating
parameters
reaction
temperature,
pressure,
feed
composition,
configuration,
sweep
gas
flow
rates.
analysis
discussion
revolve
around
key
performance
indicators
conversion,
recovery,
yield.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(37), С. 13986 - 13997
Опубликована: Авг. 29, 2024
The
dry
reforming
of
methane
(DRM)
can
drive
the
green
transformation
chemical
industry,
achieving
effective
environmental
protection.
Designing
Ni-based
catalysts
with
high
activity
and
sintering
resistance
is
one
key
factors
in
implementation
DRM
technology.
In
this
study,
a
tip-growth
carbon
nanotube
template
strategy
was
for
first
time
proposed
to
prepare
sinter-resistant
single
core
PtNi
alloy@SiO2
channel
(d
≈
20
nm)
catalyst
(PtNi@SiO2).
At
550
°C,
CH4
CO2
conversion
PtNi@SiO2
reaction
reach
up
31.5
34.1%,
respectively,
almost
no
phenomenon
observed
after
40
h
stability
test.
excellent
catalytic
performance
could
be
ascribed
unique
confinement
function
alloy
synergistic
effect.
highly
dispersed
particles
are
difficult
agglomerate
during
DRM.
Besides,
inner
walls
SiO2
pore
channels
effectively
restrict
migration
particles,
thereby
leading
PtNi@SiO2.
Importantly,
compared
pure
Ni,
reduce
highest
dissociation
energy
barriers
by
0.6
0.2
eV,
increasing
its
activity.
