Catalysts,
Journal Year:
2023,
Volume and Issue:
13(12), P. 1508 - 1508
Published: Dec. 12, 2023
A
prepared
FeZnNa@SiO2-C
catalyst
with
graphitized
carbon
(C)-modified
mesoporous
SiO2
supports
metal
nanoparticles
the
sol–gel
method.
The
effect
of
adding
Na
and
Zn
promoters
as
a
dispersion
on
CO2
hydrogenation
to
low
olefins
was
systematically
studied.
results
showed
that
Zn–Na,
combination,
could
promote
absorption
improved
conversion
rate
CO2.
an
alkaline
substance
can
improve
more
acidic
CO2,
which
increase
59.03%.
Meanwhile,
addition
secondary
Fe-based
catalysts
form
surface
alloy
alter
adsorption
activation
C-O
bonds,
inhibit
subsequent
paraffins,
facilitate
reduction
Fe2O3
formation
active
Fe5C2
species.
species
found
in
TEM
XRD,
selectivity
target
product
41.07%.
deep
inhibited,
space–time
yield
(STY)
raised
again
by
inhibiting
their
hydrogenations,
up
0.0436.
However,
corresponding
STY
did
not
infinitely
doping,
higher
catalytic
performance
for
be
exhibited
when
doping
reached
6.4%.
Compared
Fe@SiO2-C
catalyst,
Na-
Zn-promoted
catalysts,
modified
sol-gel
method,
used
directly
highly
efficient
thus
has
promising
application
prospect
future.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(21), P. 12006 - 12085
Published: Oct. 31, 2024
Catalytic
COx
(CO
and
CO2)
hydrogenation
to
valued
chemicals
is
one
of
the
promising
approaches
address
challenges
in
energy,
environment,
climate
change.
H2O
an
inevitable
side
product
these
reactions,
where
its
existence
effect
are
often
ignored.
In
fact,
significantly
influences
catalytic
active
centers,
reaction
mechanism,
performance,
preventing
us
from
a
definitive
deep
understanding
on
structure-performance
relationship
authentic
catalysts.
It
necessary,
although
challenging,
clarify
provide
practical
strategies
tune
concentration
distribution
optimize
influence.
this
review,
we
focus
how
induces
structural
evolution
catalysts
assists
processes,
as
well
efforts
understand
underlying
mechanism.
We
summarize
discuss
some
representative
tuning
for
realizing
rapid
removal
or
local
enrichment
around
catalysts,
along
with
brief
techno-economic
analysis
life
cycle
assessment.
These
fundamental
understandings
further
extended
reactions
CO
CO2
reduction
under
external
field
(light,
electricity,
plasma).
also
present
suggestions
prospects
deciphering
controlling
applications.
ChemCatChem,
Journal Year:
2024,
Volume and Issue:
16(13)
Published: March 4, 2024
Abstract
To
control
anthropogenic
CO
2
emissions
worldwide,
it
is
necessary
not
only
to
align
the
chemical
industry
and
energy
sector
with
renewable
resources
but
also
implement
large‐scale
utilization
of
as
a
feedstock.
The
Fe‐catalyzed
‐modified
Fischer‐Tropsch
Synthesis
(CO
‐FTS)
one
most
promising
options
for
efficient
utilization,
can
be
used
synthesize
desired
higher
hydrocarbons
(C
2+
),
including
lower
olefins
=
‐C
4
main
building
blocks
industry,
long‐chain
5+
which
fuels.
optimize
catalyst
process
design
purpose
developing
an
economically
viable
industrial
process,
reaction
mechanism
factors
controlling
product
selectivity
need
fully
understood.
This
article
discusses
current
state‐of‐the‐art
in
approaches
making
effective
progress
addressing
these
challenges.
ACS Catalysis,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1112 - 1122
Published: Jan. 3, 2025
The
hydrogenation
of
CO2
into
high-value
chemistry
is
seen
as
one
the
viable
strategies
for
solving
energy
crisis
future.
Light
olefins
have
attracted
considerable
attention
basic
feedstocks
in
industry.
In
this
work,
a
series
Fe–Co
bimetallic
active
site
catalysts
were
constructed
by
typical
sol–gel
strategy.
synergistic
regulation
layout
catalyst
highly
interfaces
and
exhibited
high
conversion
(56.9%)
CO2,
low
CO
selectivity
(3.6%),
(40.5%)
light
olefins,
remarkable
yield
(22.2%).
results
associated
characterization
analysis
indicate
that
activity
formed
sites
are
fundamental
reason
olefins.
introduction
cobalt
drive
RWGS
reaction
forward
(Le
Chatelier's
Principle),
which
further
enhances
conversion.
addition,
dynamic
evolution
physical
phase
structure,
elemental
composition
valence,
H2
adsorption
ability,
formation
process
during
analyzed
situ
DRIFT
spectra
other
characterizations,
potential
mechanism
to
proposed.
This
work
provides
an
effective
rational
design
strategy
bimetals
with
promote
efficient
oriented
synthesis
