ACS Omega,
Год журнала:
2021,
Номер
6(19), С. 12801 - 12812
Опубликована: Май 3, 2021
The
MnxCey
binary
catalysts
with
a
three-dimensional
network
structure
were
successfully
prepared
via
polymer-assisted
deposition
method
using
ethylenediaminetetraacetic
acid
and
polyethyleneimine
as
complexing
agents.
developed
pore
could
facilitate
the
gas
diffusion
accelerate
catalytic
reaction
for
NH3
selective
reduction
(SCR).
Moreover,
addition
of
Ce
is
beneficial
exposure
active
sites
on
catalyst
surface
increases
adsorption
NO
species.
Therefore,
Mn1Ce1
exhibits
best
activity
NOx
removal
conversion
rate
97%
at
180
°C,
superior
water
resistance,
favorable
stability.
SCR
over
takes
place
through
E–R
pathway,
which
confirmed
by
in
situ
diffuse
reflectance
Fourier
transform
analysis.
This
work
explores
new
strategy
to
fabricate
multimetal
optimize
catalysts.
ACS Applied Materials & Interfaces,
Год журнала:
2021,
Номер
13(2), С. 2610 - 2621
Опубликована: Янв. 7, 2021
In
this
paper,
a
simple
method
to
enhance
the
H2O
resistance
of
Ru/TiCeOx
catalysts
for
o-DCB
catalytic
combustion
by
constructing
superhydrophobic
coating
phenyltriethoxysilane
(PhTES)
was
proposed.
The
effect
PhTES
content
on
pore
structure,
specific
surface
area,
resistance,
contact
angle
(CA)
value,
and
activity
catalyst
studied.
When
water
added,
pristine
decreased
about
26%,
while
Ru/TiCeOx-16Ph
hardly
decreased.
According
analysis
results
XRD,
FT-IR,
SEM,
CA,
closely
coated
produce
more
hydrophobic
surface.
had
strong
hydrophobicity,
159.8°,
which
not
only
significantly
enhanced
self-cleaning
but
also
showed
good
elimination
temperature
(T90
=
341
°C)
o-DCB.
Ru/TiCeOx-XPh
resulted
from
reduction
active
centers
consumed
(water
occupying
oxygen
vacancy
sites).
reaction
mechanism
based
species
Deacon
This
provided
new
idea
design
water-resistant
composite
promoted
practical
application
in
oxidation
Industrial & Engineering Chemistry Research,
Год журнала:
2019,
Номер
58(47), С. 21285 - 21295
Опубликована: Ноя. 1, 2019
This
work
reported
the
heterogeneous
rhodium
oxide
catalyst
encapsulated
within
microporous
silicalite-1
(S-1)
zeolite
(Rh2O3@S-1)
through
epitaxial
growth
of
S-1
seeds
pre-anchored
with
species.
Based
on
scanning
electron
microscopy
(SEM),
transmission
(TEM),
and
X-ray
photoelectron
spectroscopy
(XPS)
results,
were
successfully
covered
by
shell
was
meanwhile
well
embedded
zeolitic
microchannel.
Furthermore,
a
thicker
could
be
modulated
secondary
as-synthesized
Rh2O3@S-1
(Rh2O3@S-1-II).
Those
catalysts,
for
first
time,
applied
in
hydroformylation
terminal
olefins,
i.e.,
1-hexene,
1-octene,
1-decene,
1-dodecene,
exhibited
enhanced
regioselectivity
compared
supported
Rh2O3/S-1
catalyst.
Strikingly,
more
abundant
integrated
microchannels,
Rh2O3@S-1-II
manifested
relatively
most
competitive
field
ligand-free
nanoparticle
catalysts.
Experimental
results
investigations
revealed
that
promoted
consequence
distinctive
product
diffusion
rates
endowed
intrinsically
steric
hindrance
microchannel
around
oxide.
