Catalysts,
Journal Year:
2024,
Volume and Issue:
14(3), P. 176 - 176
Published: March 1, 2024
The
dry
reforming
of
methane
(DRM)
is
a
promising
method
for
controlling
greenhouse
gas
emissions
by
converting
CO2
and
CH4
into
syngas,
mixture
CO
H2.
Ni-based
catalysts
have
been
intensively
investigated
their
use
in
the
DRM.
However,
they
are
limited
formation
carbonaceous
materials
on
surfaces.
In
this
review,
we
explore
carbon-induced
catalyst
deactivation
mechanisms
summarize
recent
research
progress
mitigating
carbon
deposition
developing
coke-resistant
catalysts.
This
review
emphasizes
significance
support,
alloy,
structural
strategies,
importance
comprehending
interactions
between
components
to
achieve
improved
catalytic
performance
stability.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 19, 2025
Hydrogenation
saturation
of
phenanthrene
(a
typical
component
coal
tar)
could
not
only
improve
the
combustion
performance
fuel
oil,
but
also
obtain
raw
material
for
preparing
high-energy-density
fuel.
Nickel-based
catalysts
have
been
considered
promising
hydrogenation
due
to
their
appealing
capacity
activate
molecules.
However,
Ni
derivation
precursor
greatly
affects
its
activity.
In
this
work,
NiAl2O4
catalyst
was
obtained
by
sol-gel
method.
Under
experimental
conditions
temperature
300
°C,
pressure
5
MPa,
and
WHSV
0.52
h-1,
conversion
over
can
be
up
99.7
93.9%
perhydrophenanthrene
yield,
while
those
traditional
Ni/Al2O3
are
just
96.8
77.3%,
respectively.
Moreover,
TOF
(3.01
×
10-3
s-1)
surpasses
that
(2.46
s-1),
which
indicates
derived
from
has
stronger
According
relevant
characterizations,
superior
derives
H2
adsorption
dissociation
ability
formation
an
electron-deficient
structure
active
metal
Ni,
contributes
improved
activation
polycyclic
aromatic
hydrocarbons.
ACS Catalysis,
Journal Year:
2025,
Volume and Issue:
15(4), P. 3314 - 3327
Published: Feb. 10, 2025
Bimetallic
Ni–Zr
layers
on
top
of
a
Zr
metal
substrate
are
oxidatively
transformed
into
an
active
Ni
metal–ZrO2
interfacial
state
under
methane
dry
reforming
(DRM)
conditions,
which
exhibits
progressive
coking
with
increasing
DRM
cycle
number
and
time.
Complementing
established
anticoking
catalyst-
process-design
strategies,
the
efficiency,
as
well
structural
surface-chemical
consequences
intermediate
regeneration
using
pure
CO2,
were
studied.
By
combining
repeated
catalytic
testing,
X-ray
photoelectron
spectroscopy,
chemically
resolved
scanning
electron
microscopy,
we
show
that
catalyst
inverse
Boudouard
reaction
not
only
depletes
main
part
deposited
coke
efficiently
but
also
leads
to
improved
particularly
exhibiting
redispersion
toward
small
particles
optimized
Ni/ZrO2
dimensions.
