Angewandte Chemie,
Год журнала:
2023,
Номер
136(3)
Опубликована: Ноя. 30, 2023
Abstract
Leveraging
electrochemistry
to
degrade
robust
polymeric
materials
has
the
potential
impact
society's
growing
issue
of
plastic
waste.
Herein,
we
develop
an
electrocatalytic
oxidative
degradation
polyethers
and
poly(vinyl
ethers)
via
electrochemically
mediated
hydrogen
atom
transfer
(HAT)
followed
by
polymer
promoted
molecular
oxygen.
We
investigated
selectivity
efficiency
this
method,
finding
our
conditions
be
highly
selective
for
polymers
with
hydridic,
electron‐rich
C−H
bonds.
leveraged
reactivity
in
presence
polymethacrylates
polyacrylates
complete
selectivity.
Furthermore,
method
made
degradable
incorporation
ether
units
into
backbone.
quantified
products,
identifying
up
36
mol
%
defined
oxidation
including
acetic
acid,
formic
acetaldehyde,
extended
a
polyether‐based
polyurethane
green
solvent.
This
work
demonstrates
facile,
electrochemically‐driven
route
containing
functionalities.
Chemical Science,
Год журнала:
2024,
Номер
15(23), С. 8606 - 8624
Опубликована: Янв. 1, 2024
Electrochemistry
shows
promising
new
avenues
in
the
recycling
of
polymeric
materials.
This
work
reviews
electrochemical
depolymerization,
post-polymerization
functionalization,
and
paired
catalysis,
highlighting
future
challenges
opportunities.
Chemistry - A European Journal,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 22, 2025
Abstract
Chlorinated
polymers
have
made
enormous
contributions
to
materials
science
and
are
commercially
produced
on
a
large
scale.
These
chlorinated
could
be
recycled
as
chlorine
sources
efficiently
produce
valuable
compounds
owing
their
facile
release
of
HCl.
Although
the
thermal
stability
PVDC
is
low
compared
PVC,
this
can
advantageous
in
terms
easy
fast
dehydrochlorination.
Herein,
we
report
an
efficient
electrochemical
chlorination
using
poly(vinylidene
chloride)
(PVDC)
source
that
works
undivided
cell
applies
good
number
examples.
This
method
commodity
such
waste
PVDC‐PVC
pharma
blister
film,
PVDC‐PO
multilayer
food
packaging,
compression
molded
sheets
Ixan
(with
heat
stabilizer)
with
similar
efficiency.
Furthermore,
also
provides
dechlorination
up
98
%,
leading
unsaturated
dechlorinated
material.
Converting
into
more
stable
compounds,
harmful
chlorine‐containing
gases
during
incineration
minimized.
Additionally,
not
only
restricted
batch
processes
but
electroflow
process
for
electrosynthesis
has
been
demonstrated.
Macromolecules,
Год журнала:
2025,
Номер
58(5), С. 2210 - 2223
Опубликована: Фев. 18, 2025
Polymeric
materials
have
become
indispensable
due
to
their
versatility
and
low
cost,
yet
environmental
impact
presents
a
significant
global
challenge.
Traditional
chemical
recycling
methods
typically
rely
on
heat
as
stimulus;
for
instance,
pyrolysis
is
popular
methodology
which
faces
limitations
high
energy
consumption,
product
selectivity,
the
generation
of
undesirable
byproducts.
In
response,
recent
advances
in
promotion
depolymerization
degradation
through
alternative
stimuli
such
light,
electrochemistry,
mechanical
force,
shown
promising
potential
more
efficient
selective
polymer
breakdown,
yielding
either
starting
monomers
or
valuable
small
molecules.
This
perspective
explores
key
examples
these
emerging
strategies,
highlighting
improve
upon
current
protocols
offer
pathways
under
milder
conditions,
while
identifying
challenges
that
future
research
must
address
translate
chemistry
into
viable
broadly
applicable
strategies.
Green Chemistry,
Год журнала:
2023,
Номер
25(18), С. 7243 - 7252
Опубликована: Янв. 1, 2023
The
Ti
0.5
Si
O
2
solid
acid
catalyst
is
extremely
active
and
stable
for
methanol
alcoholysis
of
polyethylene
terephthalate
to
dimethyl
under
mild
conditions.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
63(3)
Опубликована: Ноя. 30, 2023
Leveraging
electrochemistry
to
degrade
robust
polymeric
materials
has
the
potential
impact
society's
growing
issue
of
plastic
waste.
Herein,
we
develop
an
electrocatalytic
oxidative
degradation
polyethers
and
poly(vinyl
ethers)
via
electrochemically
mediated
hydrogen
atom
transfer
(HAT)
followed
by
polymer
promoted
molecular
oxygen.
We
investigated
selectivity
efficiency
this
method,
finding
our
conditions
be
highly
selective
for
polymers
with
hydridic,
electron-rich
C-H
bonds.
leveraged
reactivity
in
presence
polymethacrylates
polyacrylates
complete
selectivity.
Furthermore,
method
made
degradable
incorporation
ether
units
into
backbone.
quantified
products,
identifying
up
36
mol
%
defined
oxidation
including
acetic
acid,
formic
acetaldehyde,
extended
a
polyether-based
polyurethane
green
solvent.
This
work
demonstrates
facile,
electrochemically-driven
route
containing
functionalities.
This
review
comprehensively
explores
various
homogeneous
and
heterogeneous
catalytic
systems
for
the
hydrogenolysis
of
oxygenated
polymeric
wastes
(OXPs),
presenting
an
adaptable
solution
to
plastic
pollution
generating
valuable
feedstock.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(48)
Опубликована: Сен. 10, 2024
Abstract
Plastics
are
omnipresent
in
our
everyday
life,
and
accumulation
of
post‐consumer
plastic
waste
environment
represents
a
major
societal
challenge.
Hence,
methods
for
recycling
high
demand
future
circular
economy.
Specifically,
the
degradation
polymers
towards
value‐added
small
molecules
constitutes
sustainable
strategy
carbon
Despite
recent
advances,
chemical
polymer
continues
to
be
largely
limited
redox
agents
or
low
energy
efficiency
photochemical
processes.
We
herein
report
powerful
iron‐catalyzed
molecular
weight
polystyrenes
through
electrochemistry
efficiently
deliver
monomeric
benzoyl
products.
The
robustness
ferraelectrocatalysis
was
mirrored
by
various
real‐life
plastics,
also
on
gram
scale.
cathodic
half
reaction
represented
hydrogen
evolution
(HER).
scalable
electro‐polymer
could
solely
fueled
solar
commercially
available
panel,
indicating
an
outstanding
potential
decentralized
green
To
promote
the
chemical
recycling
of
polyethylene
terephthalate
(PET),
its
valorization
by
hydrocracking
was
investigated.
ease
implementation
at
large-scale
this
route,
PET
coprocessed
with
vacuum
gasoil
(VGO),
which
is
a
benchmark
feed
industrial
unit
(10
and
90
wt
%,
respectively)
hydrocracked
using
PtPd/HY
catalyst.
Furthermore,
suitability
PETs
different
natures
origins
to
produce
fuel-assimilable
streams
assessed.
Specifically,
one
virgin,
commercial,
mechanically
recycled
were
used,
analyzing
differences
in
conversion,
yields
product
fractions
(dry
gas,
liquefied
petroleum
gases,
naphtha,
light
cycle
oil),
composition
naphtha
oil
fractions,
given
their
possible
interest
being
used
formulation
automotive
fuels.
The
reaction
runs
performed
batch
reactor
under
following
conditions:
80
bar,
420
°C,
120
min,
catalyst/feed
mass
ratio
10
gcatalyst
gfeed–1.
modified
degraded
plastics
more
easily
converted
into
liquid
hydrocarbons
within
LCO
contents
isoparaffins
between
45
50
%.
From
products,
pathways
PET-derived
molecules
evaluated.
Crystals,
Год журнала:
2025,
Номер
15(4), С. 293 - 293
Опубликована: Март 24, 2025
The
growing
plastic
waste
crisis
calls
for
innovative
and
sustainable
solutions
that
go
beyond
traditional
recycling
methods.
Electrochemical
upcycling
has
emerged
as
a
promising
approach
converting
plastics
into
valuable
chemicals,
fuels,
functional
materials.
Recent
advancements
in
electrochemical
strategies
valorization
focus
on
key
catalysts,
reaction
mechanisms,
process
efficiencies.
studies
place
special
emphasis
new
techniques
aimed
at
improving
selectivity,
energy
efficiency,
scalability.
Additionally,
integrating
renewable
sources
optimizing
electrode
materials
have
significantly
enhanced
sustainability.
This
review
specifically
focuses
recent
research,
which
addresses
the
challenges
of
waste.
