ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(10), С. 11609 - 11620
Опубликована: Май 13, 2024
The
size
of
precious
metal
catalysts
plays
an
important
role
in
their
activity,
and
inhibiting
aggregation
or
even
sintering
is
a
major
challenge
practical
industrial
applications.
Herein,
the
physical
limitation
fibrous
mesoporous
silica
(KCC-1)
Pt–CeO2
interaction
CeO2
nanoislands
were
designed
used
to
inhibit
Pt
particles,
thereby
improving
intrinsic
activity
thermal
stability.
With
introduction
nanoislands,
turnover
frequency
(TOF)
value
Pt–CeO2/KCC-1
catalyst
for
propane-catalyzed
combustion
at
210
°C
was
1.5
times
that
Pt/KCC-1
5.6
Pt/CeO2.
Moreover,
after
aging
800
°C,
showed
enhanced
stability
compared
with
due
smaller
change
size.
Through
comprehensive
characterization
research
reaction
mechanism,
results
indicate
interaction,
species
confined
middle
nanoisland,
which
further
separated
by
fiber
sheets
KCC-1,
advance
catalyst.
strategy
nanoisland
this
paper
provides
guidance
designing
better
other
harsh
conditions.
Environmental Science & Technology,
Год журнала:
2025,
Номер
59(2), С. 1034 - 1059
Опубликована: Янв. 6, 2025
Water
vapor
is
a
significant
component
in
real
volatile
organic
compounds
(VOCs)
exhaust
gas
and
has
considerable
impact
on
the
catalytic
performance
of
catalysts
for
VOC
oxidation.
Important
progress
been
made
reaction
mechanisms
H2O
water
resistance
strategies
oxidation
recent
years.
Despite
advancements
technology,
most
still
exhibit
low
activity
under
humid
conditions,
presenting
challenge
reducing
adverse
effects
To
develop
water-resistant
catalysts,
understanding
mechanistic
role
implementing
effective
water-resistance
with
influencing
factors
are
imperative.
This
Perspective
systematically
summarizes
related
research
oxidation,
drawing
from
over
390
papers
published
between
2013
2024.
Five
main
proposed
to
clarify
their
H2O.
inhibition/promotion
introduced,
elucidating
various
VOCs.
Additionally,
different
kinds
discussed,
including
fabrication
hydrophobic
materials,
design
specific
structures
morphologies,
introduction
additional
elements
catalyst
modification.
Finally,
scientific
challenges
opportunities
enhancing
efficient
practical
applications
purification
highlighted.
Green Energy & Environment,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 1, 2024
Zeolite-loaded
noble
metal
catalysts
have
demonstrated
excellent
performance
in
addressing
cold-start
automotive
exhaust
NOx
emissions
and
catalytic
oxidation
of
VOCs
applications.
Pd
Pt
are
the
most
commonly
used
active
metals
PNA
VOC
catalysts,
respectively.
However,
despite
same
metal/zeolite
composition,
efficient
sites
for
been
viewed
as
mainly
Pd2+
Pt0,
respectively,
both
which
different
from
each
other.
As
a
result,
various
methods
need
to
be
applied
dope
zeolitic
support
respectively
usages.
No
matter
type
species
is
needed,
common
requirement
that
should
highly
dispersed
zeolite
stay
stable.
The
purpose
this
paper
review
progress
synthetic
means
zeolite-coated
(Pd,
Pt,
etc.)
effective
or
catalysts.
To
give
better
understanding
relationship
between
introduced
methods,
contributed
adsorption
(PNA)
deep
were
first
summarized
compared.
Then,
based
on
above
discussion,
detailed
construction
strategies
elaborated
terms
routes,
precursor
selection,
carrier
requirements.
It
hoped
will
contribute
adsorption/catalysis
zeolites
provide
promising
design
adsorption/catalysts
with
high
activity,
selectivity
stability.
