The
hydrothermally
obtained
CuxCoyCez-LDH
precursor
was
calcined
to
create
the
CuxCoyCezO
oxide
catalyst.
catalysts
were
employed
investigate
C3H6-SCR.
results
of
investigation
found
that
at
225
°C,
95%
NO
reduction
can
be
by
using
Cu0.21Co0.48Ce0.31.
Furthermore,
analyzed
through
a
variety
characterization
methods.
Both
XRD
and
HRTEM
confirmed
uniform
distribution
three
elements
presence
species.
analyses
XPS
H2-TPR
led
proposal
redox
reaction
involving
Cu,
Co,
with
Ce.
more
oxygen
vacancies
created
happen
owing
reaction.
BET
NH3-TPD
indicated
moderate
specific
surface
area
acidity
favored
formation
intermediates
like
monodentate
bidentate
nitrates,
formate,
acetate
in
situ
DRIFTS
experiments.
These
findings
suggest
mechanism
for
C3H6-SCR
on
CuxCoyCezO.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(36), P. 42541 - 42556
Published: Sept. 4, 2023
A
noble
metal
catalyst
shows
excellent
low-temperature
oxidation
activity
in
the
catalytic
combustion
of
benzene
but
has
problem
SO2
poisoning.
We
all
know
that
easily
competes
with
reactant
molecules
for
adsorption
active
site
and
electronic
effects
on
to
deactivate
catalyst.
Therefore,
sulfur
resistance
catalysts
is
key
be
solved
process
benzene.
Herein,
Pt/SiO2
an
ordered
mesoporous
structure
was
prepared
by
a
one-step
hydrothermal
method,
MgO,
ZnO,
MnOx
were,
respectively,
coated
surface
as
ultrathin
shells
improve
Pt/SiO2.
observed
significantly
improved
due
protective
effect
oxide
shell.
By
comparing
three
core-shell
catalysts,
it
found
Pt/SiO2@MnOx
shell
had
best
performance.
The
reason
not
only
protected
Pt
also
good
electron
transfer
core
Pt,
so
could
effectively
avoid
rapid
poisoning
Pt0
site.
In
addition,
verified
redispersion
species
atmosphere
increase
Meanwhile,
situ
DRIFT
results
confirmed
promote
atmosphere.
Catalysis Communications,
Journal Year:
2024,
Volume and Issue:
187, P. 106854 - 106854
Published: Jan. 23, 2024
Metal-organic
frameworks
(MOFs)-based
carrier,
MIL-100(Fe),
was
synthesized
by
hydrothermal
method
and
Ni
supported
on
the
MIL-100(Fe)
wet
impregnation
to
prepare
catalysts
for
selective
catalytic
reduction
of
NO
with
C3H6
(C3H6-SCR).
The
addition
significantly
improved
reactivity
C3H6-SCR.
At
275
°C,
conversion
74.5%,
whereas
5.8%Ni/MIL-100(Fe)
100%
N2
selectivity
100%.
in-situ
DRIFTS
prove
that
interaction
between
NO2−/NO3−
CxHyOz
substances
generated
intermediate
isocyanates
(R-NCO),
reaction
pathway
proposed
based
results
understand
mechanism.
