We
showed
previously
that
antimony
(III)
oxide
is
extensively
used
as
the
catalyst
for
polyethylene
terephthalate
(PET)
synthesis,
very
efficient
in
PET
depolymerization
reaction
via
glycolysis.
This
study
presents
synthesis
of
a
novel
magnetic
bifunctional,
recyclable,
and
reusable
ionic
liquid,
[email protected],
contain
only
2.2
wt%
antimony,
with
hope
it
lowers
amount
needed
well
can
be
recover
reused.
was
chemical
recycling
through
glycolysis
to
produce
bis(2-hydroxyethyl)
(BHET)
monomer,
results
demonstrated
at
loading
6.0
wt%,
provided
100%
conversion
96.4%
yield
selectivity
BHET
200°C
0.6
bar
pressure
high
reactor.
The
influence
on
studied
activity
[email protected]
compared
bromide
another
synthesized
unsupported
antimony-containing
liquid.
Results
revealed
highest
catalytic
this
liquid
reaction.
recoverability
reusability
examined
five
consecutive
reactions
acceptable
next
runs.
use
offers
promising
potential
due
its
ease
separation
an
external
magnet,
product
purity,
recyclability.
Journal of Labelled Compounds and Radiopharmaceuticals,
Journal Year:
2025,
Volume and Issue:
68(3)
Published: March 1, 2025
Polyethylene
terephthalate
(PET)
is
one
of
the
most
extensively
used
plastics
in
daily
life.
Due
to
its
prevalent
use,
it
ubiquitous
environment
and
a
significant
contributor
plastic
pollution.
Continuous
exposure
photochemical,
thermal,
biological,
mechanical
processes
makes
PET
susceptible
slow
degradation
production
microsized
and/or
nanosized
particles
known
as
microplastic/nanoplastic
(MP/NP).
MP/NP
are
widely
detected
environment,
including
drinking
water
human
food;
consequently,
knowledge
gaps
on
impacts
food
sources
have
gained
global
attention.
A
large
gap
bioaccumulation
fate
animals.
The
application
carbon-14
labeled
NP
animals
would
provide
relatively
straightforward
approach
understanding
degree
absorption
tissue
distribution
after
absorption.
Here,
simple,
fast,
efficient
synthetic
method
described
produce
[14C]-PET
NP.
comprises
polycondensation
terephthaloyl
chloride
readily
accessible
[14C]-ethylene
glycol
followed
by
nanoprecipitation.
synthesized
were
characterized
nuclear
magnetic
resonance
spectroscopy
(NMR),
Fourier
transform
infrared
(FTIR),
dynamic
light
scattering
spectroscopy,
thermogravimetric
analyzer
(TGA),
UV-Vis
spectroscopy.
ACS Engineering Au,
Journal Year:
2024,
Volume and Issue:
4(5), P. 432 - 449
Published: July 15, 2024
Although
step-growth
polymers
(SGPs)
play
a
fundamental
role
in
the
plastics
economy,
contributing
significantly
to
various
facets
of
our
daily
life,
their
end-of-life
management
remains
inadequately
addressed.
Chemical
recycling
SGP
wastes,
involving
depolymerization
followed
by
repolymerization,
emerges
as
promising
solution
toward
achieving
circular
economy.
The
SGPs
is
usually
dynamic
equilibrium
with
polymerization
reactions,
thus
falling
under
system
amenable
Le
Chatelier's
principle.
This
perspective
endeavors
elucidate
interplay
between
principle
and
chemical
particular
emphasis
on
guidance
provided
latter
process.
To
this
end,
we
have
selected
five
conventional
SGPs,
namely,
poly(ethylene
terephthalate),
polyamides,
polycarbonates,
polyurethanes,
polyureas,
representatives
how
alterations
temperature,
pressure,
concentrations
products
or
reactants,
catalysts
influence
process
SGPs.
Additionally,
proposes
several
potential
strategies
for
applying
Molecules,
Journal Year:
2024,
Volume and Issue:
29(18), P. 4305 - 4305
Published: Sept. 11, 2024
Glycolysis
of
poly(ethylene
terephthalate)
(PET)
is
a
prospective
way
for
degradation
PET
to
its
monomer
bis(hydroxyethyl)
terephthalate
(BHET),
providing
the
possibility
permanent
loop
recycling.
However,
most
reported
glycolysis
catalysts
are
homogeneous,
making
catalyst
difficult
recover
and
contaminating
products.
Herein,
we
on
Pd-Cu/γ-Al2O3
applied
it
in
as
catalyst.
The
formed
structure
gave
high
active
surface
area,
which
enabled
these
micro-particles
work
more
efficiently.
conversion
BHET
yield
reached
99%
86%,
respectively,
presence
5
wt%
within
80
min
at
160
°C.
After
reaction,
can
be
quickly
separated
by
filtration,
so
easily
reused
without
significant
loss
reactivity
least
five
times.
Therefore,
may
contribute
an
economically
environmentally
improved
large-scale
recycling
fiber
waste.
Catalysis Science & Technology,
Journal Year:
2024,
Volume and Issue:
14(19), P. 5574 - 5587
Published: Jan. 1, 2024
The
nanorod
morphology
of
the
MnO
x
material
with
application
optimal
calcination
temperature
exhibited
good
catalytic
efficiency
in
chemical
recycling
PET
bottles
into
a
valuable
monomer.
