Interaction between NOx reduction and soot oxidation for selective catalytic oxidation-selective catalytic reduction catalyst coated on diesel particulate filter: An experimental and numerical study
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 160055 - 160055
Опубликована: Янв. 1, 2025
Язык: Английский
Simulation of soot filtration and oxidation characteristics in the porous wall of a wall-flow CDPF
Chemical Engineering Science,
Год журнала:
2025,
Номер
unknown, С. 121523 - 121523
Опубликована: Март 1, 2025
Язык: Английский
Effect of Catalyst Coating Strategy on NOx Reduction and Passive Soot Oxidation for Selective Catalytic Oxidation-Selective Catalytic Reduction Catalyst on Diesel Particulate Filter
SAE technical papers on CD-ROM/SAE technical paper series,
Год журнала:
2025,
Номер
1
Опубликована: Апрель 1, 2025
<div
class="section
abstract"><div
class="htmlview
paragraph">Selective
catalytic
oxidation/reduction
catalysts
coated
on
diesel
particulate
filters
(SDPF)
are
an
important
technology
route
to
meet
next-stage
emission
regulations.
The
previous
research
of
the
group
showed
that
compared
with
SDPF
Cu-SSZ-13,
novel
selective
oxidation-selective
reduction
(SCO-SCR)
catalyst,
which
combined
MnO<sub>2</sub>-CeO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub>
and
can
simultaneously
improve
NOx
soot
oxidation
performance.
Catalyst
coating
strategy
is
parameter
affecting
performance
SDPF.
In
this
study,
effects
different
strategies
SCO-SCR
(C25,
C50,
C75,
C100)
in
were
investigated.
results
show
that,
as
inlet
gas
temperature
increases,
NO
emissions
first
decrease
then
increase,
conversion
efficiency
increases
decreases,
rich-NO<sub>2</sub>
area,
NH<sub>3</sub>
rate,
N<sub>2</sub>O,
CO,
CO<sub>2</sub>
emissions,
pressure
drop
increase.
By
expanding
catalyst
efficiency,
NO<sub>2</sub>,
filter
wall
all
increased,
cake
layer
decreased.
When
450
°C,
there
areas
at
both
front
end
rear
C100.
25%
area
increase
regeneration
efficiency.
While
impact
N<sub>2</sub>O
generation
small.
Still,
it
will
lead
excessive
NO<sub>2</sub>
emissions.
increased
magnitude
decease
expands.</div></div>
Язык: Английский
Pyroelectric Pt-supported S-scheme heterojunction catalyst for effective photocatalytic degradation of VOCs containing soot driven by visible light
Applied Catalysis B Environment and Energy,
Год журнала:
2024,
Номер
unknown, С. 124858 - 124858
Опубликована: Ноя. 1, 2024
Язык: Английский
Optimising the Particulate Emission Characteristics of a Dual-Fuel Spark Ignition Engine by Changing the Gasoline Direct Injection Strategy
Sustainability,
Год журнала:
2024,
Номер
16(19), С. 8713 - 8713
Опубликована: Окт. 9, 2024
In
the
current
global
scenario,
it
is
essential
to
find
more
effective
and
practical
solutions
mitigate
problem
of
particulate
emissions
from
vehicles.
this
research,
emission
characteristics
with
changing
GDI
pressure
or
applying
a
split
strategy
different
second
injection
timings
were
initially
explored
in
Dual-Fuel
Spark
Ignition
(DFSI)
engine,
which
employs
Ethanol
Port
Injection
(EPI)
plus
Gasoline
Direct
(GDI).
The
experimental
results
show
that
by
increasing
(PGDI)
5.5
MPa
18
MPa,
ignition
delay
(θF)
shows
small
decrease
0.68
degrees.
parameters,
such
as
maximum
in-cylinder
temperature
(TMI)
exhaust
gas
(TEG),
each
increase
53.75
K
13.84
K.
An
apparent
reduction
59.5%
36.26%
was
achieved
for
concentrations
number
(NP)
mass
(MP),
respectively.
Particulate
are
effectively
reduced
an
appropriate
range
timing
(tGDI2).
Under
tGDI2
=
−260
°CA,
NP
MP
exhibit
relatively
lower
level.
However,
delaying
°CA
−140
there
than
60%
concentration.
research
findings
help
offer
new
valuable
insights
into
optimising
DFSI
engines.
Moreover,
could
contribute
novel
optimisation
Язык: Английский