Energies,
Год журнала:
2024,
Номер
17(24), С. 6407 - 6407
Опубликована: Дек. 19, 2024
This
study
is
related
to
producing
a
set
of
fatty
acid
esters
from
different
vegetable
oils
and
C1–C12
alcohols.
A
total
66
products
were
synthesized.
The
obtained
characterized
by
composition,
density,
viscosity,
saponification
value,
iodine
low-temperature
properties,
oxidative
stability.
It
was
established
that
the
as
well
alcohol,
used
has
significant
impact
on
properties.
Comparing
physicochemical
properties
with
existing
standards
specifications,
it
proposed
use
for
industrial
applications.
In
particular,
rapeseed
oil
methyl
are
an
ideal
candidate
application
biodiesel,
while
transesterification
soybean
oil,
sunflower
coconut
higher
alcohols
led
promising
bio-lubricants.
Castor
alkyl
could
potentially
be
utilized
base
due
their
excellent
viscosity
Catalysts,
Год журнала:
2025,
Номер
15(4), С. 396 - 396
Опубликована: Апрель 18, 2025
Replacing
homogeneous
acids
with
heterogeneous
provides
an
appealing
approach
for
biodiesel
production
due
to
their
reusability
and
easy
recycling.
The
physicochemical
properties
of
have
a
significant
influence
on
catalytic
activity
reusability.
Herein,
the
(i.e.,
acid
density,
strength,
type,
wettability,
thermal
sensitivity,
magnetism)
recyclability
is
elaborately
discussed.
Characterization
techniques
identifying
are
elaborated.
Methods
regulating
summarized.
Finally,
opportunities
challenges
use
This
review
theoretical
guidance
developing
efficient
stable
catalysts
by
adjusting
properties.
Energies,
Год журнала:
2024,
Номер
17(20), С. 5070 - 5070
Опубликована: Окт. 12, 2024
Blending
gasoline
with
hydrogenated
catalytic
biodiesel
has
the
potential
to
improve
combustion
problems
of
direct-injection
compression
combustion,
and
spray
characteristics
blending
fuel
can
directly
affect
effect.
In
order
understand
a
gasoline–hydrocatalyzed
mixture,
numerical
model
constant
volume
chamber
was
established,
accuracy
verified
by
experimental
data
in
literature.
Based
on
this
model,
penetration,
sauter
mean
diameter,
velocity
field
concentration
at
different
ratios
were
studied.
The
results
show
that
under
conditions
850
K
ambient
temperature,
5
MPa
pressure,
80
injection
as
proportion
increases,
penetration
diameter
decreases
slightly,
area
high
center
increases.
study
will
contribute
development
blended
fuels
for
superior
performance
reduced
pollutant
emissions
appropriate
ratios.
C – Journal of Carbon Research,
Год журнала:
2024,
Номер
10(4), С. 94 - 94
Опубликована: Ноя. 4, 2024
The
main
goal
of
this
work
is
to
evaluate
the
ability
sulfonated
carbon
nanoparticles
(SCNs)
induce
photothermal
catalysis
biodiesel
synthesis
reaction
(transesterification
natural
triglycerides
(TGs)
with
alcohols).
Carbon
(CNs)
are
produced
by
carbonization
cross-linked
resin
(RNs).
RNs
condensation
a
phenol
(resorcinol
or
tannin)
formaldehyde
under
ammonia
(Stober
method).
method
produces
nanoparticles,
which
carbonized
into
(CNs).
illumination
CNs
increases
temperature
proportionally
(linear)
nanoparticle
concentration
and
exposure
time
(with
saturation).
Solid
acid
catalysts
made
heating
in
concentrated
sulfuric
(SEAr
sulfonation).
application
either
light
catalyst
(at
25
°C)
induced
low
conversions
(<10%)
for
esterification
acetic
bioethanol.
In
contrast,
medium
containing
SCNs
high
(>75%).
case
sunflower
oil
bioethanol),
greater
than
40%
were
observed
only
when
applied
simultaneously.
Therefore,
it
possible
use
as
photothermally
activated
Fischer
triglyceride
transesterification
(biodiesel
synthesis).
International Journal of Green Energy,
Год журнала:
2024,
Номер
unknown, С. 1 - 18
Опубликована: Ноя. 17, 2024
Using
effective
green
heterogeneous
catalysts
to
produce
biodiesel
from
inexpensive
non-food
oils
is
vital
for
reducing
reliance
on
fossil
fuels,
meeting
increasing
global
energy
demands,
and
supporting
carbon
neutrality.
This
study
explores
the
use
of
a
sulfonated
lignin-based
aerogel
catalyst
production
waste
vegetable
oil
(WVO).
The
catalyst,
prepared
via
sol–gel
method
followed
by
carbonization
sulfonation
exhibited
specific
surface
area
78.16
m2/g
-SO₃H
group
density
2.81
±
0.14
mmol/g,
which
served
as
primary
active
sites.
Under
optimal
conditions;
10
wt%
loading,
45:1
methanol-to-WVO
molar
ratio,
65°C
reaction
temperature,
5-hr
time,
achieved
maximum
conversion
93.3%
yield
88.51%.
However,
decline
in
performance
was
observed
over
repeated
cycles,
with
dropping
51.68%
fourth
cycle,
attributed
leaching
groups
reduction
44.13
m2/g.
decrease
sulfonic
1.03
0.11
mmol
SO₃H
g−
1
indicated
loss
sites,
highlighting
need
improve
sites'
stability
catalyst's
structural
integrity.
produced
met
ASTM
D6751
EN
14,214
standards,
demonstrating
effectiveness
sustainable
production.
Energies,
Год журнала:
2024,
Номер
17(24), С. 6407 - 6407
Опубликована: Дек. 19, 2024
This
study
is
related
to
producing
a
set
of
fatty
acid
esters
from
different
vegetable
oils
and
C1–C12
alcohols.
A
total
66
products
were
synthesized.
The
obtained
characterized
by
composition,
density,
viscosity,
saponification
value,
iodine
low-temperature
properties,
oxidative
stability.
It
was
established
that
the
as
well
alcohol,
used
has
significant
impact
on
properties.
Comparing
physicochemical
properties
with
existing
standards
specifications,
it
proposed
use
for
industrial
applications.
In
particular,
rapeseed
oil
methyl
are
an
ideal
candidate
application
biodiesel,
while
transesterification
soybean
oil,
sunflower
coconut
higher
alcohols
led
promising
bio-lubricants.
Castor
alkyl
could
potentially
be
utilized
base
due
their
excellent
viscosity
