Molecules,
Journal Year:
2024,
Volume and Issue:
29(14), P. 3309 - 3309
Published: July 13, 2024
CO-selective
methanation
(CO-SMET)
is
an
efficient
hydrogen-rich
(H2-rich)
gas
purification
technology
for
proton
exchange
membrane
fuel
cells.
It
vital
to
develop
suitable
catalysts
with
good
low-temperature
activity
CO-SMET
reactions.
In
this
study,
RuNi/TiZrx-mixed
metal
oxide
(RuNi/TiZrx-MMO)
different
molar
ratios
of
Zr/Ti,
derived
from
a
Zr-promoted
NiTi-layered
double
hydroxide
(NiTi-LDH)
precursor
were
successfully
prepared
using
the
co-precipitation
and
wet
impregnation
methods.
The
RuNi/TiZr0.2-MMO
catalyst
possesses
higher
catalytic
performance
in
lower
temperature
window
180–280
°C,
which
can
reduce
CO
concentration
be
below
10
ppm.
characterization
results
obtained
XRD,
BET,
SEM,
TEM,
XPS,
TPR,
TPD
suggest
that
addition
ZrO2
increases
surface
area
catalyst,
improves
dispersion
metallic
nanoparticles,
reducibility
Ni
species
on
catalyst’s
surface,
enhances
adsorption
activation
ability
CO,
resulting
remarkable
at
reaction
temperatures.
Moreover,
demonstrated
long-term
stability
carbon
resistance.
Case Studies in Thermal Engineering,
Journal Year:
2024,
Volume and Issue:
56, P. 104238 - 104238
Published: March 15, 2024
The
fluctuating
nature
of
wind
energy
and
shortage
biomass
resources,
as
two
types
renewables,
can
be
fulfilled
via
their
hybridization.
In
this
respect,
present
research
proposes
a
hybrid
biomass/wind
driven
power
generation
framework
based
on
combined
gas
turbine-Rankine
cycle
scheme.
turbine
includes
reheat
stage
where
the
produced
hydrogen
is
added
to
combustion
chamber
for
increasing
flue
temperature
enhance
output
power.
injected
generated
water
electrolyzer
which
powered
by
electricity
from
turbines.
proposed
scheme
system
leads
reduction
in
consumption
will
fulfill
fluctuations
non-continuous
availability
energy.
To
appraise
feasibility
developed
scheme,
thermodynamic
first
second
law-based
analyses
were
performed.
Also,
exergo-environmental
evaluation
plant
conduced
using
three
indices.
Finally,
optimum
operation
conditions
determined
minimization
environmental
damage
index.
results
under
indicate
that,
yields
exergy
efficiency
47.35
%
with
index
0.0104.
