The
catalytic
conversion
of
CO2
to
CO
through
hydrogenation
has
emerged
as
a
promising
strategy
for
utilization,
given
that
serves
valuable
C1
platform
compound
synthesizing
liquid
fuels
and
chemicals.
However,
the
predominant
formation
CH4
via
deep
over
Ru-based
catalysts
poses
challenges
in
achieving
selective
production.
High
reaction
temperatures
often
lead
catalyst
deactivation
changes
selectivity
due
dynamic
metal
evolution
or
agglomeration,
even
with
classic
strong
metal–support
interaction.
Herein,
we
have
developed
FeOx/Ru/Rutile
multilayer
epitaxial
structure
by
depositing
FeOx
layer
onto
epitaxially
grown
RuO2
nanolayers
on
surface
rutile
nanoparticles.
This
transformed
into
which
Ru
nanoparticles
were
decorated
layers
ultrastable
metal-support
interaction
(SMSI).
Subsequently,
decoration
effectively
shifted
dominant
product
from
95%
during
hydrogenation.
Remarkably,
this
exhibits
exceptional
stability
can
be
operated
stably
at
550
°C
long
time
without
apparent
deactivation.
Compared
observed
supported
nanoparticles,
between
maintains
their
electronic
states
different
temperatures.
Furthermore,
Ru–FeOx
inhibits
H2
activation
capability,
adsorption,
subsequent
CO.
transformation
employed
here,
utilizes
initial
structures,
applied
construct
SMSI
enhance
catalysts'
performance.
Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(7), P. 2958 - 2968
Published: Feb. 12, 2024
The
hydroformylation
of
alkenes
represents
an
economically
sustainable
and
widespread
industrial
application
for
high-value-added
aldehyde
preparation.
Herein,
a
series
cerium
oxide
(CeO2)
catalysts
with
various
morphologies
(rods,
polyhedra,
octahedra)
were
prepared
using
simple
impregnation-reduction
method,
Rh
active
sites
evenly
dispersed
on
the
CeO2
surface.
Due
to
existence
oxygen
vacancies
in
catalysts,
unsaturated
generated,
adsorption
energy
CO
catalyst
surfaces
was
optimized,
reaction
barrier
reduced.
Thus,
obtained
showed
good
catalytic
performance.
vacancy
concentration
(D/F2g)
three
followed
order:
CeO2-R-Rh
(0.47)
>
CeO2-P-Rh
(0.42)
CeO2-O-Rh
(0.36).
excellent
styrene
activity,
99%
conversion
98%
selectivity
under
low
syngas
pressure
phosphate-free
ligands.
At
same
time,
general
applicability
other
alkenes,
implying
broad
scope
potential
applications.
strategy
presented
herein
adjusting
performance
through
strong
interaction
metal-oxide-supported
interface
contributes
fresh
perspectives
understanding
reaction.
The
catalytic
conversion
of
CO2
to
CO
through
hydrogenation
has
emerged
as
a
promising
strategy
for
utilization,
given
that
serves
valuable
C1
platform
compound
synthesizing
liquid
fuels
and
chemicals.
However,
the
predominant
formation
CH4
via
deep
over
Ru-based
catalysts
poses
challenges
in
achieving
selective
production.
High
reaction
temperatures
often
lead
catalyst
deactivation
changes
selectivity
due
dynamic
metal
evolution
or
agglomeration,
even
with
classic
strong
metal–support
interaction.
Herein,
we
have
developed
FeOx/Ru/Rutile
multilayer
epitaxial
structure
by
depositing
FeOx
layer
onto
epitaxially
grown
RuO2
nanolayers
on
surface
rutile
nanoparticles.
This
transformed
into
which
Ru
nanoparticles
were
decorated
layers
ultrastable
metal-support
interaction
(SMSI).
Subsequently,
decoration
effectively
shifted
dominant
product
from
95%
during
hydrogenation.
Remarkably,
this
exhibits
exceptional
stability
can
be
operated
stably
at
550
°C
long
time
without
apparent
deactivation.
Compared
observed
supported
nanoparticles,
between
maintains
their
electronic
states
different
temperatures.
Furthermore,
Ru–FeOx
inhibits
H2
activation
capability,
adsorption,
subsequent
CO.
transformation
employed
here,
utilizes
initial
structures,
applied
construct
SMSI
enhance
catalysts'
performance.
