Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(9), P. 3853 - 3866
Published: Feb. 20, 2024
As
a
pathway
to
green
hydrogen,
the
catalytic
dehydrogenation
of
methane
is
an
economical
and
COx-free
alternative
produce
sufficient
volumes
hydrogen
address
energy
sustainability.
This
work
attempts
develop
catalyst
enhance
conversion,
stability,
favorable
carbon
nanostructures.
Monometallic
Fe
catalysts
were
synthesized
on
mesoporous
template
identify
best
synthesis
methodology
covering
incipient
wetness,
hydrothermal,
wet
impregnation
methods.
logical
step
ease
separation
from
product
carbon,
bimetallic
Fe–Mo
was
same
for
first
time,
using
hydrothermal
method,
by
varying
Mo
loading
2.5
15%.
The
optimal
design
had
composition
30%Fe–5%Mo
with
specific
surface
area
606.9
g/m2,
offering
highest
conversion
at
temperature
950
°C.
corresponded
lowest
space
velocity,
reaction
temperature,
CH4
concentration,
maximum
90%
being
stable
until
end
2
h
time.
X-ray
diffraction
analysis
revealed
presence
Fe2O3
mixed
oxides,
Fe2(MoO4)3
FeMoO4
in
catalyst.
initial
H2
yield
∼61%,
it
decreased
during
reaction,
reaching
48%
after
4
reaction.
Various
structural,
textural,
morphological
characterizations
pre-
postreaction
performed
advanced
analytical
techniques.
Graphitic
alloy,
phases
observed
XRD
patterns
spent
Carbon
depositions
morphologies
under
different
conditions
ranging
nanoparticles
nanotubes
agglomerates
nanoflowers.
A
well-defined
network
nanoflowers
along
bamboo-shaped
could
be
over
optimized
conditions.
