FirePhysChem,
Год журнала:
2024,
Номер
4(4), С. 283 - 294
Опубликована: Март 6, 2024
Co-agglomeration
unique
crystal
engineering
approach;
in
which
the
co-precipitated
micro-particles
of
nitramines
with
other
energetic
materials
co-agglomerated
by
slurry
method;
to
modify
properties
attractive
like
CL20,
HMX,
BCHMX,
and
RDX
etc.
The
interesting
structural
modifications
newly
prepared
crystals
(CACs)
one
are
discussed
here.
There
notable
variations
morphologies
packing
crystals,
including
key
relatively
high
density,
melting
point,
impact
sensitivity,
detonation
properties.
These
CACs
overwhelming
majority
showing
co-crystals.
Apart
from
these
aspects,
co-agglomeration
provides
a
huge
opportunity
tune
performance
existing
is
easy
scale-up
for
industrial
level.
preliminary
results
also
suggest
that
chemical
factors
involved
preparation
have
tremendous
improvements
than
conventional
crystallization.
With
technological
optimization
this
method
can
be
employable
scale
production.
Energetic Materials Frontiers,
Год журнала:
2022,
Номер
3(2), С. 84 - 89
Опубликована: Апрель 5, 2022
To
decrease
the
hygroscopicity
of
ADN—a
energetic
oxidizer,
this
study
developed
a
new
cocrystal
composed
ADN
and
18C6
(18-crown-6)
at
1:1
M
ratio
through
cocrystallization
using
solvent
evaporation
method.
The
structure
ADN/18C6
cocrystal,
which
has
been
confirmed
single
X-ray
diffraction
(SXRD),
indicates
that
formation
is
attributed
to
strong
intermolecular
hydrogen
bond
interactions
between
ammonium
ions
crown
ether
cycles.
melting
point
151.5
°C,
significantly
higher
than
those
its
respective
components:
93.6
°C
43.2
18C6.
Notably,
nearly
non-hygroscopic
compared
with
ADN.
cocrystal's
rate
0.9%
when
exposed
air
relative
humidity
(RH)
60%
temperature
30
for
12
h.
By
comparison,
ADN's
18%
under
same
conditions.
In
addition,
impact
sensitivity
18
J,
substantially
lower
raw
(2.5
J).
These
results
show
offers
an
effective
way
reduce
Crystal Growth & Design,
Год журнала:
2023,
Номер
23(9), С. 6974 - 6987
Опубликована: Авг. 19, 2023
Owing
to
promising
characteristics
including
a
high
heat
of
formation
(100
kcal·mol–1),
density
(2.04
g·cm–3),
and
powerful
explosive
nature
(14–20%
more
potent
than
1,3,5,7-tetranitro-1,3,5,7-tetrazocane
(HMX)),
the
hollow
cage-type
molecular
structure
polycyclic
nitramine
2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane
(HNIW/CL-20)
has
recently
attained
significant
attention
from
scientists.
Its
sensitivity
toward
mechanical
stimuli
raises
safety
concerns.
The
safety–power
contradiction
high-energy
explosives
can
be
alleviated
certain
extent
via
co-crystallization
method.
It
is
possible
modify
properties
energetic
materials
such
as
melting
decomposition
point,
density,
detonation
(detonation
velocity
pressure),
sensitivities
(friction
impact)
by
forming
new
chemical
composition
new/existing
molecules
through
noncovalent
interactions
(π–π
stacking,
hydrogen
bonds,
van
der
Waals
forces).
Energetic
co-crystals
have
been
developed
various
approaches
solvent
evaporation,
solvent/nonsolvent,
grinding,
slurry,
resonant
acoustic
mixing,
etc.
This
Review
highlights
an
interesting
overview
HNIW/CL-20
based
co-crystals,
their
synthetic
methods,
intermolecular
interactions,
physicochemical
properties.
Moreover,
applications,
existing
problems,
challenges
for
future
work
on
CL-20-based
are
also
discussed.
FirePhysChem,
Год журнала:
2024,
Номер
4(4), С. 283 - 294
Опубликована: Март 6, 2024
Co-agglomeration
unique
crystal
engineering
approach;
in
which
the
co-precipitated
micro-particles
of
nitramines
with
other
energetic
materials
co-agglomerated
by
slurry
method;
to
modify
properties
attractive
like
CL20,
HMX,
BCHMX,
and
RDX
etc.
The
interesting
structural
modifications
newly
prepared
crystals
(CACs)
one
are
discussed
here.
There
notable
variations
morphologies
packing
crystals,
including
key
relatively
high
density,
melting
point,
impact
sensitivity,
detonation
properties.
These
CACs
overwhelming
majority
showing
co-crystals.
Apart
from
these
aspects,
co-agglomeration
provides
a
huge
opportunity
tune
performance
existing
is
easy
scale-up
for
industrial
level.
preliminary
results
also
suggest
that
chemical
factors
involved
preparation
have
tremendous
improvements
than
conventional
crystallization.
With
technological
optimization
this
method
can
be
employable
scale
production.