Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 23, 2024
Abstract
The
surge
in
global
plastic
production,
reaching
to
390.7
million
tons
2021,
exacerbates
environmental
pollution,
with
only
11%
of
being
recycled.
Catalytic
recycling,
particularly
through
hydrogenolysis
and
hydrocracking,
offers
a
promising
avenue
for
upcycling
polyolefin
plastic,
comprising
55%
waste.
This
study
investigates
the
influence
water
on
depolymerization
using
Ru
catalysts,
revealing
promotional
effect
when
both
metal
acid
sites,
Brønsted
acid,
are
present.
Findings
highlight
impact
content,
metal-acid
balance,
their
proximity
this
interaction,
as
well
role
modulating
isomerization
process,
affecting
product
selectivity.
Additionally,
interaction
facilitates
suppression
coke
formation,
ultimately
enhancing
catalyst
stability.
A
comprehensive
techno-economic
life
cycle
assessment
underscores
viability
benefits
presence
water.
These
insights
advance
understanding
offer
strategies
optimizing
recycling
processes.
GCB Bioenergy,
Journal Year:
2024,
Volume and Issue:
16(3)
Published: Feb. 2, 2024
Abstract
Owing
to
the
enormous
consumption
of
petroleum
products
and
their
environmental
polluting
nature,
attention
has
been
given
seeking
alternative
resources
for
development
sustainable
products.
Biomass
is
a
renewable
source
that
can
be
converted
variety
fuels
chemicals
by
different
approaches,
which
are
best
replacements
traditional
petroleum‐derived
Pyrolysis
process
in
chemical
bonds
biomass
macromolecules
such
as
cellulose,
hemicellulose,
lignin,
fractured
into
small
molecular
intermediates
under
high
pressure,
results
bio‐oil,
biochar,
fuel
gases
desired
Of
these
pyrolysis
products,
bio‐oil
primary
product
usually
contains
large
amounts
oxygen
nitrogen
compounds
hinder
its
application
potential.
Catalytic
beneficial
method
reported
alter
constituents
quality
upgrade
them
diverse
applications.
hydropyrolysis
copyrolysis
an
approaches
overcome
drawbacks
raised
toward
formation
process.
Layered
double
hydroxides
(LDH)
derived
forms
well‐known
catalytic/catalytic
support
materials
various
reactions
due
superior
properties,
easy
preparation,
thermal
stability,
tuneable
acid/base
properties.
This
review
summarizes
progress
utilization
as‐synthesized
LDH
modified
mixed
metal
oxides
functionalized/composite
active
catalysts
sources.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(23), P. 8630 - 8641
Published: May 23, 2024
The
toluene
(TOL)–methylcyclohexane
(MCH)
system
is
one
of
the
viable
solutions
because
its
high
stability
and
hydrogen
storage
capacity
(6.2%).
However,
volatilities
TOL
MCH
accumulative
byproducts
make
it
difficult
to
transport
hydrogen.
Considering
these
limitations,
we
developed
a
new
strategy
introducing
an
extraction
column
pressure
swing
adsorption
with
heat
integration
reduce
required
energy
utilities.
Furthermore,
comprehensive
system-level
analysis
was
conducted
through
application
example
from
Australia
Korea.
minimum
cost
determined
be
$2.17/kg-H2
via
techno-economic
analysis.
Sensitivity
uncertainty
analyses
revealed
influence
economic
process
parameters.
Finally,
life
cycle
assessment
compare
environmental
impact
(EI)
each
part.
Although
dehydrogenation
more
energy-demanding
than
hydrogenation,
hydrogenation
has
larger
EIs
for
some
factors
including
fossil
resource
scarcity
(13%
larger)
water
consumption
(746%
larger),
due
makeup.
compared
changes
in
sources.
This
study
can
provide
insights
into
optimization
decision-making
supply
chains
revitalize
economy.
Catalysis Communications,
Journal Year:
2024,
Volume and Issue:
187, P. 106864 - 106864
Published: Feb. 1, 2024
Selective
conversion
of
furfural
can
prepare
various
important
chemicals,
marking
it
as
a
prominent
area
interest
in
biomass
utilization.
This
paper
reviews
the
latest
progress
direct
to
1,
5-pentanediol,
2-pentanediol
and
4-pentanediol
which
are
widely
used
high-value
fine
chemicals
with
great
development
potential
application.
The
recent
catalytic
methodologies
employed
synthesis
pentanediols
from
furfural,
encompassing
both
noble
metal
non-noble
catalysts,
have
been
comprehensively
summarized.
Furthermore,
challenges
opportunities
biomass-based
analyzed,
emphasizing
catalyst
importance
sustainable,
eco-friendly
production
for
renewable
resources.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(37), P. 13763 - 13773
Published: July 6, 2024
The
growing
demand
for
hydrogen
fuel
cell
vehicles
requires
an
energy-efficient
and
sustainable
refueling
infrastructure.
However,
conventional
gaseous
stations
have
limitations
in
improving
energy
efficiency
sustainability
because
they
consume
a
significant
amount
of
electricity
during
compression
cooling
processes.
Herein,
we
propose
design
that
utilizes
the
cold
liquid
to
improve
reduce
life-cycle
environmental
impact.
process
involves
utilizing
through
heat
exchanger
generation
organic
Rankine
cycle.
Furthermore,
developed
substantially
reduces
consumption
by
using
pump
instead
low-pressure
(LP)
compressor.
Energy
analysis
assessment
were
performed
verify
new
is
preferable
station.
Consequently,
this
study
demonstrates
potential
system
enhance
future
infrastructures.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Nov. 29, 2024
The
surge
in
global
plastic
production,
reaching
400.3
million
tons
2022,
has
exacerbated
environmental
pollution,
with
only
11%
of
being
recycled.
Catalytic
recycling,
particularly
through
hydrogenolysis
and
hydrocracking,
offers
a
promising
avenue
for
upcycling
polyolefin
plastic,
comprising
55%
waste.
This
study
investigates
the
influence
water
on
depolymerization
using
Ru
catalysts,
revealing
promotional
effect
when
both
metal
acid
sites,
Brønsted
site,
are
present.
Findings
highlight
impact
content,
metal-acid
balance,
their
proximity
this
interaction,
as
well
role
modulating
isomerization
process,
affecting
product
selectivity.
Additionally,
interaction
facilitates
suppression
coke
formation,
ultimately
enhancing
catalyst
stability.
A
comprehensive
techno-economic
life
cycle
assessment
underscores
viability
benefits
presence
water.
These
insights
advance
understanding
offer
strategies
optimizing
recycling
processes.
hydrocracking
present
approach
plastics.
Here,
authors
catalytic
upcycling,
emphasizing
that
catalysts
an
optimal
balance
significantly
improve
polyethylene
is
The
growing
use
of
plastics
is
significantly
impacting
the
environment,
resulting
in
contamination
our
surroundings
and
food
chain
with
plastic
particles,
as
well
increasing
carbon
emissions.
In
this
context,
development
biodegradable
materials
important
to
promote
a
more
sustainable
world
reduced
environmental
footprint.
This
study
aims
develop
coproduction
process
for
monomers,
1,4-butanediol
(1,4-BDO)
adipic
acid,
from
renewable
feedstock,
lignocellulose
biomass.
economic
greenhouse
gas
emissions
footprint
aspects
are
maximized
by
utilizing
three
major
components
biomass
(cellulose,
hemicellulose,
lignin)
via
efficient
fractionation
catalytic
conversion.
addition,
energy
requirements
optimizing
heat
integration
through
pinch
analysis.
Techno-economic
analysis
life
cycle
assessment
conducted
evaluate
benefits.
minimum
selling
price
bio-based
1,4-BDO
calculated
be
$2,126/metric
ton,
which
lower
than
market
fossil-based
$2,500/metric
ton.
sensitivity
identify
impact
key
factors
on
product
prices.
Life
indicates
that
production
environmentally
conventional
production.
