ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(24), P. 15730 - 15745
Published: Nov. 22, 2023
In2O3
is
a
promising
catalyst
for
the
hydrogenation
of
CO2
to
methanol,
relevant
renewable
energy
storage
in
chemicals.
Herein,
we
investigated
promoting
role
Al
on
using
flame
spray
pyrolysis
prepare
series
In2O3–Al2O3
samples
single
step
(0–20
mol
%
Al).
promoted
methanol
yield,
with
an
optimum
being
observed
at
content
5
%.
Extensive
characterization
showed
that
can
dope
into
lattice
(maximum
∼
1.2
%),
leading
formation
more
oxygen
vacancies
involved
adsorption
and
formation.
The
rest
present
as
small
Al2O3
domains
surface,
blocking
active
sites
contributing
higher
CO
selectivity.
At
(≥10
Al),
particle
size
decreases
due
stabilizing
effect
Al2O3.
Nevertheless,
these
smaller
particles
are
prone
sintering
during
since
they
appear
be
easily
reduced.
These
findings
show
subtle
effects
structural
promoter
such
reducibility
texture
catalyst.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Sept. 24, 2022
Palladium
promotion
and
deposition
on
monoclinic
zirconia
are
effective
strategies
to
boost
the
performance
of
bulk
In2O3
in
CO2-to-methanol
could
unlock
superior
reactivity
if
well
integrated
into
a
single
catalytic
system.
However,
harnessing
synergic
effects
individual
components
is
crucial
very
challenging
as
it
requires
precise
control
over
their
assembly.
Herein,
we
present
ternary
Pd-In2O3-ZrO2
catalysts
prepared
by
flame
spray
pyrolysis
(FSP)
with
remarkable
methanol
productivity
improved
metal
utilization,
surpassing
binary
counterparts.
Unlike
established
impregnation
co-precipitation
methods,
FSP
produces
materials
combining
low-nuclearity
palladium
species
associated
monolayers
highly
dispersed
ZrO2
carrier,
whose
surface
partially
transforms
from
tetragonal
monoclinic-like
structure
upon
reaction.
A
pioneering
protocol
developed
quantify
oxygen
vacancies
using
situ
electron
paramagnetic
resonance
spectroscopy
reveals
enhanced
generation
because
this
unique
catalyst
architecture,
thereby
rationalizing
its
high
sustained
productivity.
Catalysts,
Journal Year:
2022,
Volume and Issue:
12(4), P. 403 - 403
Published: April 6, 2022
High-efficiency
utilization
of
CO2
facilitates
the
reduction
concentration
in
global
atmosphere
and
hence
alleviation
greenhouse
effect.
The
catalytic
hydrogenation
to
produce
value-added
chemicals
exhibits
attractive
prospects
by
potentially
building
energy
recycling
loops.
Particularly,
methanol
is
one
practically
important
objective
products,
synthesize
has
been
extensively
studied.
In
this
review,
we
focus
on
some
basic
concepts
activation,
recent
research
advances
methanol,
development
high-performance
catalysts,
microscopic
insight
into
reaction
mechanisms.
Finally,
thinking
present
possible
future
trend
presented.
ACS Catalysis,
Journal Year:
2022,
Volume and Issue:
12(20), P. 12658 - 12669
Published: Oct. 4, 2022
In
this
work,
CO2
hydrogenation
over
In2O3-supported
rhenium
(Re)
catalysts
was
found
to
be
highly
size-dependent.
When
the
Re
loading
less
than
1
wt
%,
strong
interaction
between
and
In2O3
caused
atomically
dispersed
species
with
a
positive
charge,
resulting
in
high
activity
for
methanol
enhanced
stability
at
elevated
temperatures.
The
space–time
yield
of
%
Re/In2O3
catalyst
reached
0.54
gMeOH
gcat–1
h–1
selectivity
72.1%
5
MPa
573
K.
With
increasing
loading,
supported
become
more
favored
methanation.
Under
same
experimental
conditions,
methane
is
close
100.0%
10
catalyst.
Catalyst
characterizations
density
functional
theoretical
(DFT)
calculations
further
confirm
that
size
has
significant
effect
on
hydrogen
activation
reaction.
Due
Re–In2O3
interaction,
surface
lattice
not
only
stabilizes
oxygen
vacancies
but
also
results
Hδ+
formation
upon
adsorption.
This
significantly
promotes
synthesis
from
hydrogenation.
Meanwhile,
nanoclusters
induces
Hδ-
formation,
which
eventually
leads
production.
present
study
demonstrates
promising
methanol.
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.
Fuel,
Journal Year:
2023,
Volume and Issue:
345, P. 128178 - 128178
Published: April 3, 2023
With
the
increase
in
CO2
emissions
last
decades,
capture
and
storage
utilization
technologies
have
been
interesting
topics
literature
industry.
direct
for
oil
gas
recovery
is
a
mature
route
focus
of
many
technological
academic
studies
its
potential
as
source
carbon
producing
value-added
chemical
products
synthetic
fuels.
are
grouped
based
on
production
route,
such
electrochemical,
catalytic,
photocatalytic,
photosynthetic,
biological,
depolymerization.
This
review
discusses
latest
innovations
catalyst
developments
to
C1
Amongst
various
products,
conversion
dimethyl
carbonates,
methanol,
formic
acid,
syngas,
methane
using
different
homogenous
heterogeneous
catalytic
systems
was
discussed.
The
most
recent
advancements
process
exploitations
were
highlighted
each
evaluate
maturity
proposed
technically
economically.
revealed
that
thermally-driven
synthesis
promising
industrial
deployment.
Furthermore,
Green
hydrogen
cost
energy
key
obstacles
large-scale
deployments
utilization.
However,
supported
by
renewable
production,
discussed
routes
would
be
more
applicable
near
future.
Green Carbon,
Journal Year:
2023,
Volume and Issue:
1(2), P. 133 - 145
Published: Oct. 23, 2023
Owing
to
excessive
carbon
dioxide
(CO2)
emissions,
which
cause
severe
environmental
issues,
the
conversion
and
utilization
of
CO2
have
received
increasing
attention.
its
high
efficiency
potential
for
industrial
applications,
converting
into
value-added
chemicals
via
thermocatalytic
hydrogenation
is
a
highly
effective
route
among
electrocatalytic,
photocatalytic,
conversion.
In
past
two
decades,
our
group
has
developed
novel
technologies
produce
such
as
aliphatic
hydrocarbons,
methanol
(MeOH),
ethanol,
aromatics
(especially
para-xylene,
PX).
this
review,
we
summarize
strategy
rational
design
catalysts,
including
low-temperature
MeOH
synthesis
capsule
catalysts
tandem
catalysis.
We
also
discuss
challenges
opportunities
hydrogenation,
capture,
H2
prices,
taxes.
hope
inspire
new
ideas
through
exploration
reaction
paths.