Green Chemistry,
Journal Year:
2022,
Volume and Issue:
24(23), P. 8899 - 9002
Published: Jan. 1, 2022
This
paper
reviewed
the
entire
life
cycle
of
plastics
and
options
for
management
plastic
waste
to
address
barriers
industrial
chemical
recycling
further
provide
perceptions
on
possible
opportunities
with
such
materials.
ChemSusChem,
Journal Year:
2021,
Volume and Issue:
14(19), P. 4123 - 4136
Published: May 17, 2021
Abstract
The
linear
approach
to
resource
utilization
has
led
the
accumulation
of
waste
plastic
in
environment
for
decades.
Unfortunately,
both
traditional
mechanical
recycling
and
incineration
have
faced
their
bottlenecks
that
always
resulted
quality
deterioration
value
recovery
failures.
Recently,
chemical
upcycling
processes,
including
conversion
plastics
into
virgin
monomers,
liquid
fuels,
or
feedstocks
produce
value‐added
products,
been
identified
as
most
promising
strategy
recovering
from
plastics.
However,
these
methods
are
often
cost
prohibitive
relying
on
stringent
conditions
compared
current
methods.
Accordingly,
this
Minireview
summarizes
recent
trends
achievements
We
highlight
three
research
topics:
depolymerization
monomers;
degradation
fuels
waxes;
hydrogen,
fine
feedstocks,
functional
materials.
Indeed,
is
a
bright
path
circular
environmentally
friendly
economy.
Cell Reports Physical Science,
Journal Year:
2021,
Volume and Issue:
2(8), P. 100514 - 100514
Published: July 22, 2021
Various
recycling
technologies
have
been
developed
to
deal
with
plastic
problems,
but
they
face
considerable
economic
and
technological
challenges
in
practice.
An
attractive
alternative
is
upcycling,
which
aims
dig
out
the
embedded
value
incentivize
large-scale
valorization
of
wastes.
The
degradation
nonrecoverable
wastes
another
necessity
treat
omnipresent
pollution.
This
review
presents
an
overview
on
conversion
toward
value-added
products
catalytic
Based
examination
traditional
products,
we
summarize
state-of-the-art
design
development
high-value
high-performance
fuels,
chemicals,
materials.
Subsequently,
highlight
advances
plastics
environmentally
benign
or
degradable
mineralization
into
carbon
dioxide
water.
We
conclude
our
perspective
ongoing
challenge
opportunities.
ACS Applied Polymer Materials,
Journal Year:
2021,
Volume and Issue:
3(9), P. 4325 - 4346
Published: Aug. 23, 2021
The
ubiquitous
use
of
plastics
has
been
driven
by
their
combination
low
cost
and
properties,
but
these
attributes
directly
challenge
waste
management
schemes
for
plastic
recycling.
Some
postconsumer
recycling
programs
are
now
nearly
50
years
old,
a
significant
fraction
still
finds
landfills
or
other
dumping
strategies
at
end
life.
With
the
growing
concern
regarding
waste,
especially
ocean
plastics,
there
is
need
innovation
alternative
economic
translation
to
valued
product(s)
that
will
promote
efficient
circular
utilization.
This
review
first
describes
technical
hurdles
associated
with
then
it
focuses
on
providing
an
overview
emergent
recover
through
new
polymer
design,
processes,
chemical
transformations
value-added
products.
Specific
challenges
discussed
include
sorting
separations,
product
variability
including
additives,
high
efficiency/low
in
which
existing
petrochemical
industry
can
produce
virgin
polymers,
particular
polyolefins.
Although
wide
variety
have
demonstrated
both
mechanical
means,
commercial
success
different
generally
limited
either
performance,
large
variance
key
metrics,
economics
where
products
match
performance
materials
process
expensive.
Successful
capture
likely
depend
incentives
government
regulations.
ACS Catalysis,
Journal Year:
2022,
Volume and Issue:
12(8), P. 4659 - 4679
Published: April 5, 2022
Plastics
are
indispensable,
but
their
pollution
is
triggering
a
global
environmental
crisis.
Although
many
end-of-life
catalytic
options
have
involved
converting
plastics
into
valuable
products,
deep
understanding
of
the
relationship
between
polymer
structure
and
recycling
performance
significant
urgently
needed.
Here,
we
start
with
primer
polymeric
chain
structures
on
chemical
discuss
structure–performance
polymer,
catalyst,
reaction.
Specifically,
development
challenges
re/upcycling
waste
PET
polyolefins
discussed
in-depth.
In
addition,
also
present
some
prospects
for
innovations
in
catalyst
synthesis
reaction
engineering
basis
relationship.
The
discussion
ends
brief
perspective
future
plastic
re/upcycling.
Overall,
intelligent
catalysis
design
necessary
incentivizing
relieving
burden
plastics.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2021,
Volume and Issue:
9(35), P. 11661 - 11666
Published: July 27, 2021
Catalytic
depolymerization
of
polyolefins
is
a
promising
chemical
recycling
strategy
to
create
value-added
products
from
waste
plastics,
which
are
accumulating
in
landfills
and
the
natural
environment
at
unsustainable
rates.
The
cleavage
strong
C–C
bonds
can
be
performed
using
noble
metal
hydrogen
via
hydrogenolysis
mechanism.
Previously,
we
identified
ruthenium
nanoparticles
supported
on
carbon
(Ru/C)
as
highly
active
heterogeneous
catalyst
for
conversion
polyethylene
into
liquid
gaseous
n-alkanes
under
mild
conditions.
In
present
study,
investigated
catalytic
polypropylene
(PP)
conditions
(200–250
°C,
20–50
bar
H2).
We
demonstrate
that
Ru/C
produces
C5–C32
iso-alkane
yields
above
68%
absence
solvent
identify
trade-offs
between
product
yield
temperature,
pressure,
reaction
time.
apply
rigorous
analytical
method
quantify
all
alkane
products.
characterized
was
found
recyclable
after
complete
high
molecular
weight
PP
(Mw
∼
340,000
Da)
hydrocarbons
postconsumer
centrifuge
tube.
Further,
shown
effective
depolymerizing
mixture
high-density
produce
linear
branched
alkanes,
demonstrating
feasibility
streams
mixed
polyolefin
waste.
Chemical Society Reviews,
Journal Year:
2022,
Volume and Issue:
52(1), P. 8 - 29
Published: Dec. 5, 2022
We
divide
the
up-to-date
techniques
into
two
categories:
technologies
executed
under
violent
conditions
and
mild
conditions,
we
present
a
timely
summary
of
mechanism
bond
cleavage
in
plastic
waste
to
produce
valuable
chemicals.
