Abstract
Dry
methane
reforming
(DRM)
presents
a
viable
pathway
for
converting
greenhouse
gases
into
useful
syngas.
Nevertheless,
the
procedure
requires
robust
and
reasonably
priced
catalysts.
This
study
explored
using
cost‐effective
cobalt
nickel
combined
single
catalyst
with
different
metal
ratios.
The
reaction
was
conducted
in
fixed
reactor
at
700
°C.
findings
indicate
that
incorporation
of
significantly
enhances
performance
by
preventing
sintering,
improving
dispersion,
promoting
beneficial
metal‐support
interactions.
best‐performing
(3.75Ni+1.25Co‐ScCeZr)
achieved
good
conversion
rate
CH
4
CO
2
46.8
%,
60
%
respectively
after
330
minutes
while
maintaining
stability.
TGA
‐TPD
analysis
results
show
addition
Co
to
Ni
reduces
carbon
formation,
increases
amount
strong
basic
sites
isolated
O
−
species,
total
desorbed.
These
collectively
highlight
potential
cobalt‐nickel
catalysts
practical
DRM
applications
contribute
developing
sustainable
energy
technologies.
Methane
decomposition
is
a
promising
route
to
synthesize
COx
-free
hydrogen
and
carbon
nanomaterials
(CNMs
).
In
this
work,
the
impregnation
method
was
employed
for
preparation
of
catalysts.
Systematic
investigations
on
activity
stability
Fe-based
catalysts
were
carried
out
in
packed-bed
micro-activity
reactor
at
800
°C
with
feed
gas
flow
rate
18
mL/min.
The
effect
doping
Y2
O3
,
MgO,
SiO2
TiO2
over
ZrO2
catalytic
performance
also
studied.
BET
revealed
that
specific
surface
areas
pore
volumes
are
increased
after
added
while
MgO
had
negative
impact
hence
little
decrease
area
observed.
results
showed
catalyst
supported
-doped
is,
Fe-TiZr,
demonstrated
highest
stability,
maximum
methane
conversion
81.3
%
during
180
min
time-on-stream.
At
°C,
initial
73
%,
38
64
69
final
yield
121
wt.
55
354
174
achieved
using
Fe-MgZr,
Fe-SiZr,
Fe-TiZr
Fe-YZr
catalysts,
respectively.
Moreover,
bulk
deposition
uniform
nanotubes
high
degree
graphitization
different
diameters
observed
Abstract
Dry
methane
reforming
(DRM)
presents
a
viable
pathway
for
converting
greenhouse
gases
into
useful
syngas.
Nevertheless,
the
procedure
requires
robust
and
reasonably
priced
catalysts.
This
study
explored
using
cost‐effective
cobalt
nickel
combined
single
catalyst
with
different
metal
ratios.
The
reaction
was
conducted
in
fixed
reactor
at
700
°C.
findings
indicate
that
incorporation
of
significantly
enhances
performance
by
preventing
sintering,
improving
dispersion,
promoting
beneficial
metal‐support
interactions.
best‐performing
(3.75Ni+1.25Co‐ScCeZr)
achieved
good
conversion
rate
CH
4
CO
2
46.8
%,
60
%
respectively
after
330
minutes
while
maintaining
stability.
TGA
‐TPD
analysis
results
show
addition
Co
to
Ni
reduces
carbon
formation,
increases
amount
strong
basic
sites
isolated
O
−
species,
total
desorbed.
These
collectively
highlight
potential
cobalt‐nickel
catalysts
practical
DRM
applications
contribute
developing
sustainable
energy
technologies.
