Catalysts,
Journal Year:
2020,
Volume and Issue:
10(7), P. 812 - 812
Published: July 21, 2020
CO2
methanation
has
great
potential
for
the
better
utilization
of
existing
carbon
resources
via
transformation
spent
(CO2)
to
synthetic
natural
gas
(CH4).
Alkali
and
alkaline
earth
metals
can
serve
both
as
promoters
catalysts
adsorbent
phases
upon
combined
capture
CO2.
Their
promotion
effect
during
dioxide
mainly
relies
on
their
ability
generate
new
basic
sites
surface
metal
oxide
supports
that
favour
chemisorption
activation.
However,
suppression
activity
also
occur
under
certain
conditions.
Regarding
process,
development
novel
dual-function
materials
(DFMs)
incorporate
adsorption
functions
opened
a
pathway
towards
emitted
from
point
sources.
The
sorption
catalytically
active
these
types
are
crucial
parameters
influencing
performance
stability
thus,
efforts
have
been
undertaken
optimization.
In
this
review,
we
present
some
most
recent
works
alkali
promoted
catalysts,
well
DFMs
ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(5), P. 3187 - 3200
Published: Feb. 17, 2023
CO2
hydrogenation
to
methanol
is
of
great
environmental
and
economic
interest
due
its
potential
reduce
carbon
emissions
produce
valuable
chemicals
in
one
single
reaction.
Compared
with
the
unmodified
traditional
Cu/ZnO/Al2O3
catalyst,
an
indium
oxide
(In2O3)-based
catalyst
can
double
selectivity
from
30–50
60–100%.
It
worth
noting
that
over
catalysts
involving
various
active
metals
dispersed
on
(M/In2O3,
M
=
Pd,
Ni,
Au,
etc.),
although
yield
boosted,
remains
similar
plain
In2O3
despite
distinct
chemical
properties
added
metals.
To
investigate
phenomena
behind
this
behavior,
here
we
used
RuO2/In2O3
as
a
test
catalyst.
The
results
ambient
pressure
photoelectron
spectroscopy,
situ
X-ray
absorption
fine
structure,
time-resolved
diffraction
indicate
structure
highly
dynamic
presence
reactive
environment.
Specifically,
under
conditions,
Ru
clusters
facilitate
reduction
generate
In2O3–x
aggregates,
which
encapsulate
systems
migration
driven
by
thermodynamics.
In
way,
Ru0
sites
for
CH4
production
are
blocked
while
creating
RuOx–In2O3–x
interfacial
tunable
metal–oxide
interactions
selective
production.
inverse
oxide/metal
configuration,
has
not
seen
bulk
phase
useful
binding
conversion
CO2.
This
work
reveals
nature
In2O3-based
catalysts,
providing
insights
rational
design
materials
synthesis
methanol.
Process Safety and Environmental Protection,
Journal Year:
2023,
Volume and Issue:
201, P. 457 - 482
Published: Dec. 2, 2023
Renewable
electricity,
production/storage
and
distribution
of
green
hydrogen
carbon
dioxide
emission
reduction
are
just
three
the
practices
needed
for
a
net
zero-emission
world.
The
increasing
amount
renewable
energy
produced
requires
development
versatile
technologies
capable
to
store
excess
electricity
produced.
Hydrogen
production
through
electrolysis,
despite
not
being
still
economically
viable,
can
be
considered
mature
technology.
Different
strategies
convert
H2
into
more
volumetric
dense
fuel
under
Power-to-Chemicals
(PtC)
process.
Among
these,
CO2
methanation
offers
advantage
wide
infrastructure
available
use
methane
as
chemical
both
heat
power
generation.
latter
approach,
also
called
Power-to-Gas
(PtG)
These
in
last
year
have
been
focus
research,
public
private.
In
particular,
direct
biogas
obtained
from
anaerobic
digestors
represents
challenge
an
interesting
opportunity
due
possibility
avoid
separation
step
at
moment
purification
biomethane.
Since
is
additional
cost
this
route
key
economic
sustainability
review
we
on
main
aspects
involved
design
plant,
with
particular
methanation,
starting
reaction
thermodynamics
kinetics.
Afterwards,
light
shed
most
catalysts
reported
literature,
Ni-based
considering
support
role
reaction.
kinetic
approaches
currently
promising
reactor
types,
including
different
simulation
models,
which
becoming
increasingly
fundamental
scale-up
phase,
reported.
Finally,
chapter
contains
industrially
relevant
ongoing
projects
methanation.
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(11), P. 3627 - 3662
Published: Jan. 1, 2023
The
selective
methanation
of
CO2
is
an
important
research
area
to
meet
the
net-zero
emission
targets.
Furthermore,
it
crucial
develop
solutions
achieve
carbon
neutrality,
hydrogen
utilization,
circularity,
and
chemical-energy
storage.
This
conversion
can
be
realized
via
thermocatalytic
multistep
power-to-X
route
or
by
direct
electro-
(or
photoelectro)-catalytic
technologies.
Herein,
we
discuss
need
accelerate
Improving
these
technologies
requires
a
better
understanding
catalytic
chemistry
complexity
aspects
consider
in
bridging
electrocatalytic
methanation.
In
this
tutorial
review,
initially
analyze
fundamental
question
competitive
adsorption
key
reactants
regulation
strategies
promote
overall
reaction.
Then,
approach
used
guide
reader
differences
between
thermocatalysis
electrocatalysis.
Finally,
necessary
include
modelling
designing
next-generation
electrocatalysts
for
analyzed.
