Creating
effective
pore
formation
in
petroleum
pitch
(PP)
is
challenging
due
to
its
transformation
into
a
stable
graphitic
structure
at
high
temperatures,
typical
of
soft
carbon
materials.
While
the
use
transformations
nanofibers
and
chemical
activation
can
mitigate
these
inherent
properties,
they
entail
complex
methodologies
present
environmental
risks.
This
study
introduces
hybrid
physical
process
using
steam
CO2
as
simpler
alternative.
The
effect
on
PP
investigated
activator
ratio
temperature
analyzed,
focusing
specific
surface
area,
degree
graphitization
change.
results
demonstrates
that
activated
carbons
achieved
maximum
area
2506
m2
g−1
through
synergistic
activation.
Moreover,
we
confirme
milling
crucial
for
stabilization
PP,
controlling
optimize
formation.
method
overcomes
limitations
conventional
techniques,
thereby
providing
valuable
strategy
producing
from
expanding
application
similar
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(48), P. 26727 - 26741
Published: Jan. 1, 2023
Coal
tar
pitches
(CTPs)
can
be
used
to
fabricate
low-cost
hard
carbon
anodes
in
sodium-ion
batteries
(SIBs)
via
pre-oxidation
methods;
however,
an
in-depth
analysis
of
their
synthesis
processes
is
still
scarce
literature.
Mesophase
pitch
is
a
crucial
compound
platform
for
the
production
of
various
advanced
carbon
materials,
with
its
quality
significantly
influenced
by
composition
and
structure
precursor
materials.
Here,
we
present
novel
method
preparing
naphthalene
oligomers
(NOs),
which
serve
as
precursors
preparation
mesophase
(MP)
via
polymerization
catalyzed
chloroaluminate
ionic
liquids
(Al-ILs).
Different
from
those
obtained
AlCl3-catalyzed
method,
NOs
synthesized
Al-ILs
possess
narrow
molecular
weight
distribution
(MWD,
200~600
Da)
well-defined
(di-,
tri-,
tetra-polymers
naphthalene).
When
prepared
were
used
precursors,
resulting
MP
exhibited
shorter
polycondensation
time
(4
h),
higher
yield
(68%),
lower
ash
content
(0.005%),
more
concentrated
MWD,
easier
graphitization.
These
improvements
are
attributed
to
tunable
acidity
Al-ILs,
facilitate
at
low
reaction
temperatures
appropriate
acidity,
thereby
improving
controllability.
This
work
provides
flexible
efficient
pathway
custom
that
potentially
enable
broader
industrial
applications
MP.
From Chemistry Towards Technology Step-By-Step,
Journal Year:
2025,
Volume and Issue:
6(1), P. 119 - 127
Published: March 28, 2025
The
author
conducted
a
series
of
experiments
on
obtaining
pitch
with
increased
softening
point
Tp
=
110-120
°C
by
low-temperature
thermo
oxidation
(up
to
300
°C)
electrode
coal
ash
category
B
(Tp
91
°C).
research
determines
the
thermal
conditions
for
these
types
pitches.
paper
also
defines
dependences
temperature
and
yields
thermo-oxidation
products
process
duration
air
flow
rate
