Sains Malaysiana,
Journal Year:
2023,
Volume and Issue:
52(11), P. 3177 - 3187
Published: Nov. 30, 2023
Kajian
ini
memfokus
kepada
reka
bentuk
mangkin
dwilogam
NiCo
tersokong
atas
permukaan
pasir
pantai
terawat
HCl
(P-HCl)
untuk
tindak
balas
penyahoksigenan
minyak
masak
terpakai
bagi
menghasilkan
hidrokarbon
cecair
gasolin,
diesel
dan
bahan
api
jet.
Mangkin
berkandungan
Ni
(10
%bt.)
Co
disediakan
melalui
kaedah
pengisitepuan
NiCo/P-HCl.
Po,
P-HCl
NiCo/P-HCl
telah
dilakukan
pencirian
fizikal
aktiviti
pemangkinan
diuji
penyahoksigenan.
Prestasi
dinilai
dari
segi
peratusan
hasil
kepilihan
mengikut
julat
karbon
gasolin
(C8-C11),
(C11-C17)
jet
(C8-C16).
Perawatan
bertindak
dengan
logam
oksida
yang
mempunyai
keelektropositifan
lebih
tinggi
(Al2O3
Fe2O3),
seterusnya
menyebabkan
pengurangan
komposisi
tersebut,
masing-masing
sebanyak
10.0%
12.5%.
Pengurangan
mempengaruhi
keporosan
penyokong
dirawat.
Setelah
pemuatan
Co,
berstruktur
mesoliang
(5.9
nm)
terhasil
peningkatan
luas
(22.5
m2/g)
isi
padu
liang
(0.032
cm3/g).
berjaya
menukarkan
71%,
keutamaan
produk
iaitu
(86%),
(83%)
(17%).
Penukaran
keterbaharuan
bakal
memberikan
nilai
tambah
menyokong
inisiatif
teknologi
hijau
serta
kitaran
ekonomi
mampan.
Energies,
Journal Year:
2023,
Volume and Issue:
16(17), P. 6131 - 6131
Published: Aug. 23, 2023
The
pyrolysis
of
vegetable
oil
waste
is
an
alternative
way
to
convert
biomass
into
high-quality
second-generation
biofuels,
with
social,
economic
and
environmental
sustainability.
present
work
deals
the
oleic
acid
as
a
model
compound
industrial
residue
on
CuNiAl
mixed
oxide
catalysts,
derived
from
layered
double
hydroxides.
Reactions
oils
pre-adsorbed
catalysts
(catalyst:oil
mass
ratio
5:1)
were
performed
at
550
°C
micro-pyrolysis
system
analyses
volatile
products
carried
out
online
using
GC/MS.
Copper
addition
NiAl
increased
cracking
acid.
Increasing
copper
content
also
decreased
formation
aromatics
coke
precursors,
well
oxygenated
compounds.
catalyst
Cu/Ni
0.4
showed
strong
catalytic
activity
in
conversion
high
volume
free
fatty
acids
produced.
Compared
non-catalytic
reaction,
reduced
oxygenates
hydrocarbons,
particularly
gasoline
range
(C5–C9).
was
able
residues
hydrocarbons
gasoline,
kerosene
diesel,
linear
alkylbenzenes
chemical
precursors
for
surfactant
production.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(8), P. 1699 - 1699
Published: April 10, 2025
Growing
concern
about
anthropogenic
climate
change
and
the
continuous
increase
in
energy
demand
have
driven
need
to
explore
new
sources,
particularly
transportation
sector.
Biodiesel
is
one
of
most
widely
used
biofuels,
but
its
disadvantages
restrict
use
blends
with
conventional
diesel.
A
better
alternative
green
diesel,
a
hydrocarbon
biofuel
that
can
be
pure
form
produced
through
catalytic
deoxygenation
vegetable
oils.
In
this
study,
NiMoAl
catalyst
derived
from
layered
double
hydroxides
(LDHs)
was
synthesized
for
rapeseed
oil
produce
The
characterized
using
IR,
XRD,
BET
analysis.
reactions
were
carried
out
batch
reactor,
parameters
such
as
temperature,
pressure,
loading,
reaction
time
examined.
results
demonstrated
complete
conversion
achieved
under
optimal
conditions
(320
°C,
40
bar
H2,
4
wt%
catalyst),
diesel-range
content
over
90%.
recyclability
also
evaluated,
showing
sustained
activity
multiple
cycles
while
maintaining
high
selectivity
toward
hydrocarbons
diesel
range.
Energies,
Journal Year:
2023,
Volume and Issue:
16(11), P. 4333 - 4333
Published: May 25, 2023
The
efficiency
of
Ni/TiO2
catalysts
for
renewable
diesel
production
was
evaluated
in
the
present
study.
Two
series
were
synthesized
and
characterized
using
various
physicochemical
techniques
(N2
physisorption,
XRD,
SEM,
XPS,
H2-TPR,
NH3–TPD).
In
first
catalysts,
successive
dry
impregnations
(SDI)
used
depositing
10,
20,
30,
50,
60
wt.%
Ni.
yield
towards
is
maximized
over
catalyst
with
50
Ni
loading.
Selecting
this
optimum
loading,
a
second
via
three
additional
preparation
methods:
wet
impregnation
(WI)
deposition–precipitation
either
ammonia
(DP-NH3)
or
urea
(DP-Urea)
as
precipitation
agent.
catalysts’
green
influenced
by
method
following
order:
DP-Urea
>
DP-NH3
WI
≈
SDI.
metallic
surface
area
balanced
acidity
mainly
determine
performance
catalysts.
Frontiers in Chemical Engineering,
Journal Year:
2024,
Volume and Issue:
6
Published: Feb. 22, 2024
This
study
investigated
the
hydrodeoxygenation
of
palm
oil
by
different
oxide
nanocatalysts
transition
metals
α
-Fe
2
O
3
,
NiO,
and
NiFe
4
which
were
synthesized
hot
injection.
All
nanomaterials
characterized
X-ray
diffraction,
Fourier
transform
infrared
spectroscopy,
dynamic
light
dispersion.
The
catalytic
evaluation
was
performed
in
a
Parr-type
reactor
at
350°C,
3.5
MPa
H
pressure,
h
reaction.
liquid
product
obtained
analyzed
ultraviolet-visible
spectroscopy
to
identify
n-C
16
generated
during
activity
deoxygenation
fatty
acids
produce
hydrocarbons
has
following
order:
α-Fe
<
NiO.