Current Opinion in Green and Sustainable Chemistry,
Journal Year:
2024,
Volume and Issue:
49, P. 100959 - 100959
Published: July 18, 2024
Challenges
related
to
economic
viability
and
production
processes
sustainable
aviation
fuel
(SAF)
have
significantly
hindered
its
widespread
commercial
adaptations.
This
mini
review
provides
the
current
opinion
on
various
feedstocks
conversion
for
low-cost
SAF
production.
The
primary
emphasis
lies
exploring
alternatives
traditional
feed
crops
with
a
shift
toward
utilizing
lignocellulosic
biomass,
waste
feedstocks,
oil-seed
crops,
microalgal
oil.
Fischer–Tropsch
process,
hydroprocessed
esters
fatty
acids,
nonthermal
plasma
method,
where
oil-based
oil,
oils
are
widely
used
cost
effective,
high
potential
produce
SAF.
However,
technical
immaturity
compel
detailed
investigation
optimization
process
using
alternative
feedstock.
insights
critical
factors
effecting
reaction
efficiencies,
including
feedstock
characteristics,
parameters,
catalyst
reusability,
supports
that
need
systematic
investigation.
Conclusively,
this
outlook
delves
into
challenges,
solutions,
opportunities
associated
cost-effective
Journal of the Air Transport Research Society,
Journal Year:
2024,
Volume and Issue:
2, P. 100014 - 100014
Published: May 21, 2024
Air
transport
management
research,
concerned
with
all
facets
of
aviation
operations,
policies,
and
strategies,
is
an
essential
element
making
our
system
more
sustainable
preparing
it
for
the
challenges
inherent
to
present
future.
Based
on
a
data-driven
categorization
almost
2,000
papers
published
subject,
we
discuss
status
quo
in
air
research.
Through
have
identified
15
broad
topics.
For
each
topic,
provide
description
state
art
propose
2-3
challenges,
respectively.
Overall,
study
provides
set
35
research
community.
Accordingly,
hope
believe
that
makes
valuable
contribution,
mainly
by
guiding
community
towards
delineated
work
plan
landscape
as
well
ultimately
helping
improve
global
system.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(19), P. 2840 - 2840
Published: Oct. 8, 2024
This
review
discusses
the
progress
of
research
on
sulfonated
poly(ether
ether
ketone)
(SPEEK)
and
its
composite
membranes
in
proton
exchange
membrane
fuel
cells
(PEMFCs).
SPEEK
is
a
promising
material
for
replacing
traditional
perfluorosulfonic
acid
due
to
excellent
thermal
stability,
mechanical
property,
tunable
conductivity.
By
adjusting
degree
sulfonation
(DS)
SPEEK,
hydrophilicity
conductivity
can
be
controlled,
while
also
balancing
mechanical,
thermal,
chemical
stability.
Researchers
have
developed
various
by
combining
with
range
organic
inorganic
materials,
such
as
polybenzimidazole
(PBI),
fluoropolymers,
silica,
enhance
chemical,
stability
membranes,
reducing
permeability
improving
overall
performance
cell.
Despite
significant
potential
PEMFCs,
there
are
still
challenges
room
improvement,
including
conductivity,
cost-effectiveness,
environmental
impact
assessments.
Environmental Chemistry Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 3, 2025
Abstract
The
aviation
sector
is
a
major
emitter
of
fossil
fuel-derived
carbon
dioxide
contributing
to
global
warming.
For
instance,
jet
fuel
consumed
by
the
industry
1.5–1.7
billion
barrels
per
year,
resulting
in
705
million
metric
tons
emissions.
Aircraft
manufacturers
have
set
ambitious
goals,
aiming
for
carbon-free
growth
post-2020
and
50%
reduction
greenhouse
gas
emissions
2030.
This
issue
can
be
solved
replacing
fuels
with
biofuels
produced
from
modern
biomass,
thus
meeting
neutral
objective.
Here,
we
review
technologies
convert
biomass
into
biofuel
focus
on
reactants,
catalysts,
chemistry
combustion.
Reactants
include
alcohols,
oil,
esters,
fatty
acids,
sugars.
Catalysts
Fischer–Tropsch
palladium,
platinum,
ruthenium,
nickel,
molybdenum.
utilization
could
potentially
reduce
up
80%.
We
also
discuss
economic
implications.
Journal of Cleaner Production,
Journal Year:
2023,
Volume and Issue:
418, P. 138141 - 138141
Published: July 17, 2023
Sustainable
aviation
fuel
(SAF)
production
is
one
of
the
strategies
to
guarantee
an
environmental-friendly
development
sector.
This
work
evaluates
technical,
economic
and
environmental
feasibility
obtaining
SAFs
by
hydrogenation
vegetable
oils
thanks
in-situ
hydrogen
via
aqueous
phase
reforming
(APR)
glycerol
by-product.
The
novel
implementation
APR
would
avoid
burden
conventional
fossil-derived
production,
as
well
intermittency
storage
issues
related
use
RES-based
(renewable
energy
sources)
electrolysers.
conceptual
design
a
advanced
(APR-aided)
biorefinery
was
performed,
considering
standard
plant
capacity
equal
180
ktonne/y
palm
oil.
For
scenario,
feed
underwent
hydrolysis
into
fatty
acids;
hence,
former
subjected
provide
hydrogen,
which
further
used
in
hydrotreatment
reactor
where
acids
were
deoxygenated.
techno-economic
results
showed
that
led
slight
increase
fixed
capital
investment
6.6%
compared
one,
while
direct
manufacturing
costs
decreased
22%.
In
order
get
10%
internal
rate
return,
minimum
selling
price
found
1.84
$/kg,
17%
lower
than
derived
from
configurations
(2.20
$/kg).
life-cycle
GHG
emission
assessment
carbon
footprint
scenario
ca.
12
g
CO2/MJSAF,
i.e.,
54%
(considering
energy-based
allocation).
sensitivity
analysis
pointed
out
cost
feedstock,
SAF
yield
chosen
size
are
keys
parameters
for
marketability
this
biorefinery,
has
negligible
impact;
moreover,
source
significant
consequences
on
plant.
Finally,
possible
uncertainties
both
scenarios
undertaken
Monte
Carlo
simulations.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(8), P. 5817 - 5826
Published: April 2, 2024
Electrochemically
driven
carbon–carbon
coupling
utilizing
renewable
electricity
under
ambient
conditions
has
emerged
as
an
innovative
approach
for
synthesizing
high-value
chemicals,
which
still
faces
inherent
challenges
such
low
conversion
rates
and
poor
selectivity.
While
electroreducing
furfural
to
hydrofuroin
can
produce
high-quality
biofuel,
its
efficiency
need
be
promoted.
Herein,
Cu–Sn
bimetallic
catalyst
been
developed
with
a
rate
of
>97%
selectivity
>67%
through
equilibrium
the
interfacial
intermediate
*H
*fur-CHOH,
exhibits
greatest
state-of-the-art
overall
performance.
Characterization
theoretical
calculation
reveal
that
Cu
serves
active
site
generating
whose
electron
density
decreased
by
introducing
Sn,
results
in
higher
*fur-CHOH
coverage
lower
energy
barrier
dimerization.
Moreover,
adding
Sn
also
enables
sluggish
formation
balance
*H,
leading
reduced
hydrogenation
byproducts.
The
as-developed
provides
valuable
insights
optimizing
other
C–C
electrocoupling
reactions
synthesis
chemicals.
