Polystyrene Waste Thermochemical Hydrogenation to Ethylbenzene by a N-Bridged Co, Ni Dual-Atom Catalyst
Journal of the American Chemical Society,
Год журнала:
2023,
Номер
145(29), С. 16218 - 16227
Опубликована: Июль 12, 2023
Recycling
waste
plastics
requires
the
degradation
of
into
small
molecules.
However,
various
products
are
widely
distributed
using
traditional
methods
depolymerizing
polystyrene
(PS)
such
as
catalytic
pyrolysis
and
hydrogenolysis.
Here,
we
creatively
report
a
N-bridged
Co,
Ni
dual-atom
(Co-N-Ni)
catalyst
for
targeted
conversion
PS
to
ethylbenzene
via
pressurized
tandem
fixed-bed
reactor
where
hydropyrolysis
is
coupled
with
downstream
vapor-phase
hydrotreatment.
The
Co-N-Ni
achieves
95
wt
%
92
yield,
significantly
superior
corresponding
single-atom
catalysts,
enables
real
plastics.
Theoretical
calculations
experimental
results
demonstrate
that
d-band
center
metal
atoms
well
regulated
in
catalyst.
Co
site
activates
C═C
bond
more
easily,
while
spatially
optimizes
adsorption
configuration
styrene
molecule
due
electronic
interaction.
This
also
shows
excellent
durability
provides
new
direction
plastic
degradation.
Язык: Английский
Photocatalytic Upgrading of Plastic Waste into High-Value-Added Chemicals and Fuels: Advances and Perspectives
ACS Sustainable Chemistry & Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 13, 2025
Язык: Английский
Pyrolysis of polystyrene using low-cost natural catalysts: Production and characterisation of styrene-rich pyro-oils
Journal of Analytical and Applied Pyrolysis,
Год журнала:
2024,
Номер
182, С. 106690 - 106690
Опубликована: Авг. 6, 2024
This
work
aims
to
study
the
catalytic
pyrolysis
of
polystyrene
(PS)
in
order
obtain
a
styrene-rich
liquid
appealing
for
re-polymerisation
processes.
The
process
was
performed
fixed-bed
reactor
using
low-cost
materials
such
as
ilmenite,
olivine,
calcium
oxide
(CaO)
and
dolomite
catalysts
at
600
ºC.
A
non-catalytic
test
with
sand
also
conducted
comparison
purposes.
resulting
pyro-oil
yield
between
89
96
wt%,
consisted
mainly
styrene
monomer,
dimer
trimer,
well
other
light
aromatic
compounds
depending
on
catalyst
used.
Olivine
CaO
were
capable
increase
monomer
concentration
by
about
10–12
%
compared
pyrolysis,
reaching
up
74.5
71.4
respectively.
Furthermore,
these
reduced
trimer
pyro-oil,
which
could
be
useful
further
However,
presence
polyaromatics
(PAHs)
pyro-oils
obtained
from
olivine
identified,
families
mono-aromatics,
di-aromatics,
BTX,
nitrogen
heterocyclic
increased
all
those
pyrolysis.
In
addition,
several
inorganic
species
addition
catalysts.
effect
observed
after
CaO,
especially
reduction
S,
Mg,
Ca
Fe.
These
results
clearly
demonstrate
potential
convert
PS
waste
into
valuable
building
blocks
production
new
plastics.
Язык: Английский
Robust downstream technologies in polystyrene waste pyrolysis: Design and prospective life-cycle assessment of pyrolysis oil reintegration pathways
Resources Conservation and Recycling,
Год журнала:
2024,
Номер
205, С. 107558 - 107558
Опубликована: Март 15, 2024
Chemical
recycling
of
polystyrene
waste
to
virgin
styrene
by
fluidized
bed
pyrolysis
and
purification
oil
in
a
distillation
sequence
is
investigated.
It
shown
experimentally
that
pre-treatment
expanded
(EPS)
hot
washing
does
not
improve
yields
thus
content
the
oil,
suggesting
no
elaborate
necessary
for
chemical
recycling.
Based
on
experimental
results,
oils
with
from
30
wt.-%
80
are
considered
an
Aspen
Plus®
downstream
simulation.
Process
robustness
evaluated
terms
operating
parameter
sensitivity
such
as
reflux
distillate-to-feed
ratio.
highly
variable
feed
compositions
trade-offs
more
columns
or
higher
RR
must
be
made.
Prospective
LCA
reveals
preferable
incineration
waste,
although
varying
degrees
depending
critical
impurities
present
oil.
Язык: Английский
Photoreforming of Microplastics: Challenges and Opportunities for Sustainable Environmental Remediation
Small,
Год журнала:
2024,
Номер
20(46)
Опубликована: Авг. 9, 2024
Abstract
Plastics
are
widely
used
in
daily
lives,
but
unfortunately,
their
inadequate
recycling
practices
have
led
to
the
accumulation
of
microplastics
environment,
posing
a
threat
public
health.
The
existing
methods
for
treating
energy‐intensive
and
environmentally
damaging.
In
this
context,
photoreforming
has
emerged
as
sustainable
solution
address
microplastic
crisis
by
simultaneously
them
into
value‐added
chemicals.
This
review
presents
comprehensive
overview
application
upcycling
microplastic.
underlying
mechanisms
reaction
discussed,
followed
exploration
recent
advancements
innovative
strategies
techniques
with
particular
emphasis
on
real‐world
applications
potential
large‐scale
implementation.
Also,
critical
factors
influencing
efficiency
identified,
providing
guidance
further
research
optimization.
Язык: Английский
Recent advances in dual-atom catalysts for energy catalysis
Rare Metals,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 17, 2024
Язык: Английский
Sustainable Conversion of Expanded Polystyrene Waste into Nonwoven Fabric Using the Melt Jet Spinning Process: Characterization and Properties
ACS Sustainable Chemistry & Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 20, 2025
Язык: Английский
A comprehensive review on the synthesis, properties, environmental impacts, and chemiluminescence applications of polystyrene (PS)
Discover Chemistry.,
Год журнала:
2025,
Номер
2(1)
Опубликована: Март 20, 2025
Язык: Английский
Novel and Accessible Physical Recycling for Expanded Polystyrene Waste with the Use of Acetone as a Solvent and Additive Manufacturing (Direct Ink-Write 3D Printing)
Polymers,
Год журнала:
2023,
Номер
15(19), С. 3888 - 3888
Опубликована: Сен. 26, 2023
The
current
high
production
of
plastics
has
prompted
the
exploration
alternative
pathways
to
facilitate
recycling,
aiming
for
a
progressively
sustainable
society.
This
paper
presents
an
and
affordable
technology
treating
waste
expanded
polystyrene
(EPS)
mixed
with
acetone
in
100:1
volume
ratio
be
used
as
3D
printing
ink
Direct
Ink
Write
technology.
In
order
optimize
parameters,
comprehensive
study
was
conducted,
evaluating
different
needle
diameters,
speeds,
bed
temperature
values
achieve
homogenous
pieces
highly
repeatable
process.
Results
showed
that
main
optimum
parameters
were
using
needles
diameters
14
16
G
speeds
ranging
from
2
12
mm/s,
which
found
yield
most
uniform
ribbons.
Increasing
temperature,
despite
favoring
evaporation,
led
generation
more
heterogeneous
structures
due
void
growth
inside
printed
Thus,
employing
room
proved
optimal
value.
Lastly,
comparative
between
starting
material
EPS
after
process
conducted
FTIR-ATR
GPC
analyses,
ensuring
preservation
original
polymer's
integrity
during
physical
recycling.
Язык: Английский
Innovative Valorization of Eps Waste for Oil/Water Separation Using Electrospinning and [Im, Br] Ionic Liquid
Опубликована: Янв. 1, 2023
The
aim
of
this
study
is
to
develop
an
innovative
membrane
for
separating
oil-water
mixtures,
based
on
EPS
waste
collected
from
food
and
electronic
packaging
functionalised
by
the
ionic
liquid
[Im,Br]
.
Different
percentages
IL
were
added
(1%,
3%,
6%,
12%).
surface
chemistry,
morphology,
wettability
emulsion
separation
performance
developed
membranes
investigated
in
detail.
fiber
diameter
decreased
considerably
after
addition
(passing
1,09
µm
0,442µm).
Surface
properties
showed
a
transition
hydrophobic
super-hydrophobic
properties,
as
demonstrated
water
contact
angles
ranging
116°
154°
degrees.
These
results
demonstrate
successful
functionalization
recycled
EPS-based
liquid,
leading
surfaces
that
are
highly
capable
repelling
water.
This
research
contributes
advancement
sustainable
solutions
during
oil
spill
incidents,
well
recovering
waste.
Язык: Английский