ACS Catalysis,
Год журнала:
2024,
Номер
unknown, С. 956 - 966
Опубликована: Дек. 31, 2024
Dynamic
structural
changes
in
the
reactive
environment
often
lead
to
catalyst
deactivation
thermal-catalysis
field.
Taking
advantage
of
dynamic
bulk
phases,
interfaces,
and
surface
structures
design
highly
active
catalysts
is
a
unique
but
important
strategy.
Herein,
we
report
supersaturated
ceria
solid
solution
enabling
styrene
yield
91.8%
over
extended
redox
cycles
at
430
°C
oxidative
dehydrogenation
(ODH)
ethylbenzene.
In-situ
characterizations
reveal
that
oxygen
anions
(O2–)
transition-metal
cations
(Fe
Mn)
reversibly
shuttle
through
(bulk
↔
surface)
K–Ce0.47Fe0.2Mn0.33O2−δ
during
ODH
process.
The
acts
as
cations/oxygen
reservoir,
creating
atomic
interfaces
K–Fe–O/K–Mn–O
an
gateway
for
efficient
ethylbenzene
ODH.
findings
concerning
formation
cations,
lattice
migration,
coupling
between
donation
catalytic
reactions
offer
new
strategies
designing
high-performance
catalysts.
Journal of CO2 Utilization,
Год журнала:
2024,
Номер
84, С. 102848 - 102848
Опубликована: Июнь 1, 2024
Extensive
research
efforts
have
been
devoted
to
using
greenhouse
gas
CO2
in
upgrading
bio-derived
feedstock
value-added
chemicals
the
oxidative
dehydrogenation
route
(CO2-ODH)
with
low-energy
input.
To
realize
effective
deployment
of
CO2-ODH
at
an
industrial
scale,
it
is
imperative
advance
development
robust
catalysts
that
can
selectively
catalyze
C-H
over
C-C
bonds,
while
simultaneously
demonstrating
thermodynamic
stability
coke
formation
or
sintering.
Transition
metal-based
exhibit
significant
potential
for
being
highly
selective
and
reactive
simultaneous
conversion
hydrocarbons,
owing
their
surface
reducibility,
well-balanced
acid/base
properties,
dynamic
oxygen
storage
capacity.
stimulate
further
optimization,
it's
crucial
discover
key
design
principles,
trends
descriptors,
strategies
fine-tune
catalyst
materials.
This
review
comprehensively
examines
experimental
theoretical
aimed
pinpointing
catalytic
characteristics
affect
selectivity
transition
mono,
bi,
multimetal
oxides.
It
covers
aspects
like
combinations
active
metals
supports,
effects
composition
alloying,
interfacial
structures,
adsorption
strengths,
dynamics
in-situ
restructuring,
defect
creation,
morphology,
electronic
among
others.
We
wrap
up
by
suggesting
approaches
overcome
present
obstacles
reactor
technology,
potentially
bridging
lab-to-industry
gap
this
domain.
