Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 2, 2025
Abstract
Plastic
products
bring
convenience
to
various
aspects
of
the
daily
lives
due
their
lightweight,
durability
and
versatility,
but
massive
accumulation
post‐consumer
plastic
waste
is
posing
significant
environmental
challenges.
Catalytic
methods
can
effectively
convert
into
value‐added
feedstocks,
with
catalysts
playing
an
important
role
in
regulating
yield
selectivity
products.
This
review
explores
latest
advancements
advanced
applied
thermal
catalysis,
microwave‐assisted
photocatalysis,
electrocatalysis,
enzymatic
catalysis
reaction
systems
for
chemical
recycling
valuable
feedstocks.
Specifically,
pathways
mechanisms
involved
plastics
process
are
analyzed
presented,
strengths
weaknesses
employed
across
different
described.
In
addition,
structure‐function
relationship
these
discussed.
Herein,
it
provided
insights
design
novel
outline
challenges
future
opportunities
terms
developing
tackle
“white
pollution”
crisis.
Journal of the American Chemical Society,
Год журнала:
2023,
Номер
145(41), С. 22836 - 22844
Опубликована: Окт. 5, 2023
Mixed
plastic
waste
treatment
has
long
been
a
significant
challenge
due
to
complex
composition
and
sorting
costs.
In
this
study,
we
have
achieved
breakthrough
in
converting
mixed
wastes
into
single
chemical
product
using
our
innovative
single-atom
catalysts
for
the
first
time.
The
Ru
catalyst
can
convert
∼90%
of
real
methane
products
(selectivity
>99%).
unique
electronic
structure
sites
regulates
adsorption
energy
intermediates,
leading
rapid
decomposition
plastics
superior
cycle
stability
compared
traditional
nanocatalysts.
global
warming
potential
entire
process
was
evaluated.
Our
proposed
carbon-reducing
utilizing
launches
new
era
valorization.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(41)
Опубликована: Сен. 24, 2023
The
huge
amount
of
plastic
wastes
has
become
a
pressing
global
environmental
problem,
leading
to
severe
pollution
and
resource
depletion
through
conventional
downcycling
technologies
like
incineration
landfilling.
In
contrast,
selective
upcycling
various
plastics
offers
promising
solution
for
converting
waste
into
valuable
products.
This
review
provides
comprehensive
overview
the
recent
advancements
in
innovative
catalytic
technologies,
including
thermocatalysis,
electrocatalysis,
photocatalysis.
Special
emphasis
is
placed
on
elucidating
reaction
mechanisms,
activating
designated
chemical
bonds
high
selectivity,
elaborating
above
techniques
terms
conditions
Finally,
application
prospects
future
development
trends
catalysis
are
discussed,
providing
insights
realizing
sustainable
circular
economy.
Chemical Reviews,
Год журнала:
2024,
Номер
124(16), С. 9457 - 9579
Опубликована: Авг. 16, 2024
The
large
production
volumes
of
commodity
polyolefins
(specifically,
polyethylene,
polypropylene,
polystyrene,
and
poly(vinyl
chloride)),
in
conjunction
with
their
low
unit
values
multitude
short-term
uses,
have
resulted
a
significant
pressing
waste
management
challenge.
Only
small
fraction
these
is
currently
mechanically
recycled,
the
rest
being
incinerated,
accumulating
landfills,
or
leaking
into
natural
environment.
Since
are
energy-rich
materials,
there
considerable
interest
recouping
some
chemical
value
while
simultaneously
motivating
more
responsible
end-of-life
management.
An
emerging
strategy
catalytic
depolymerization,
which
portion
C-C
bonds
polyolefin
backbone
broken
assistance
catalyst
and,
cases,
additional
molecule
reagents.
When
products
molecules
materials
higher
own
right,
as
feedstocks,
process
called
upcycling.
This
review
summarizes
recent
progress
for
four
major
upcycling
strategies:
hydrogenolysis,
(hydro)cracking,
tandem
processes
involving
metathesis,
selective
oxidation.
Key
considerations
include
macromolecular
reaction
mechanisms
relative
to
mechanisms,
design
transformations,
effect
conditions
on
product
selectivity.
Metrics
describing
critically
evaluated,
an
outlook
future
advances
described.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(8)
Опубликована: Янв. 6, 2024
Abstract
Hydrocracking
catalysis
is
a
key
route
to
plastic
waste
upgrading,
but
the
acid
site‐driven
C−C
cleavage
step
relatively
sluggish
in
conventional
bifunctional
catalysts,
dramatically
effecting
overall
efficiency.
We
demonstrate
here
facile
and
efficient
way
boost
reactivity
of
sites
by
introducing
Ce
promoters
into
Pt/HY
thus
achieving
better
metal‐acid
balance.
Remarkably,
100
%
low‐density
polyethylene
(LDPE)
can
be
converted
with
80.9
selectivity
liquid
fuels
over
obtained
Pt/5Ce‐HY
catalysts
at
300
°C
2
h.
For
comparison,
only
gives
38.8
LDPE
conversion
21.3
fuels.
Through
multiple
experimental
studies
on
structure‐performance
relationship,
species
occupied
supercage
are
identified
as
actual
active
sites,
which
possess
remarkably‐improved
adsorption
capability
towards
short‐chain
intermediates.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(15)
Опубликована: Фев. 13, 2024
Abstract
Hydrogen
is
one
of
the
most
important
energy
alternatives
to
conventional
fossil‐based
fuel.
Solar
based
photocatalytic
hydrogen
evolution
(PHE)
a
salient
approach
produce
fuel
but
its
efficiency
generally
limited
by
sluggish
and
energy‐unfavorable
oxidation
reaction.
Meanwhile,
waste
treatment
has
become
worldwide
problem
clean
highly
demanded
avoid
vast
greenhouse
emission
currently.
Inspiringly,
PHE
can
be
effectively
coupled
with
favorable
photooxidation
many
wastes,
which
kills
two
birds
stone.
In
this
review,
recent
progress
in
presented,
where
typical
solid,
liquid,
gas
wastes
have
been
briefly
discussed.
Focusing
on
understanding
complicated
reaction
mechanism
revelation
products,
cutting‐edge
techniques
for
photophysics
surface
chemistry
characterization
analyzed,
are
imperative
facilitate
following
investigation.
Finally,
developing
trend
existing
issues
current
research
also
discussed
detail
so
that
holistic
blueprint
portrayed
accelerate
their
application
realistic
world.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Июль 5, 2024
Abstract
The
chemical
deconstruction
of
polyolefins
to
fuels,
lubricants,
and
waxes
offers
a
promising
strategy
for
mitigating
their
accumulation
in
landfills
the
environment.
Yet,
achieving
true
recyclability
into
C
2
-C
4
monomers
with
high
yields,
low
energy
demand,
carbon
dioxide
emissions
under
realistic
polymer-to-catalyst
ratios
remains
elusive.
Here,
we
demonstrate
single-step
electrified
approach
utilizing
Rapid
Joule
Heating
over
an
H-ZSM-5
catalyst
efficiently
deconstruct
polyolefin
plastic
waste
light
olefins
(C
)
milliseconds,
productivity
at
much
higher
ratio
than
prior
work.
is
essential
producing
narrow
distribution
olefins.
Pulsed
operation
steam
co-feeding
enable
highly
selective
(product
fraction
>90%
towards
hydrocarbons)
minimal
deactivation
compared
Continuous
Heating.
This
laboratory-scale
demonstrates
effective
real-life
materials,
resilience
additives
impurities,
versatility
circular
management.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Июль 25, 2024
Alcoholysis
of
poly(ethylene
terephthalate)
(PET)
waste
to
produce
monomers,
including
methanolysis
yield
dimethyl
terephthalate
(DMT)
and
glycolysis
generate
bis-2-hydroxyethyl
(BHET),
is
a
promising
strategy
in
PET
management.
Here,
we
introduce
an
efficient
PET-alcoholysis
approach
utilizing
oxygen-vacancy
(V
National Science Review,
Год журнала:
2023,
Номер
10(9)
Опубликована: Авг. 2, 2023
The
unsuitable
disposal
of
plastic
wastes
has
caused
serious
environmental
pollution,
and
finding
a
green
manner
to
address
this
problem
aroused
wide
concern.
Plastic
wastes,
especially
polyolefin
are
rich
in
carbon
hydrogen,
chemical
recycling
shows
distinct
advantages
their
conversion
into
olefins
realizes
closed-loop
cycling
wastes.
should
be
labeled
before
disposal.
necessity
for,
methods
of,
pretreatment
introduced
paper
the
whole
process
is
also
summarized.
As
core
technology
pyrolysis,
including
thermal,
catalytic
solvolysis
processes,
detail
due
its
potential
for
future
development.
We
briefly
describe
feasible
strategies
pyrolytic
oil
refining
life
cycle
assessment
process.
In
addition,
suggestions
perspectives
concerning
industrial
improvement
proposed.
