Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 24, 2024
Abstract
Enhancing
the
thermal
decomposition
efficiency
and
safety
of
ammonium
perchlorate
(AP)
is
far‐reaching
significance
in
composite
propellants.
Most
catalysts
act
well
on
AP,
however,
synergistically
achievements
fastened
improved
mechanical
are
still
challenge.
Herein,
neutral
red
(NR)
selected
from
typical
dyes
through
theoretical
calculations,
acting
as
an
organic
decoration
AP
crystal
with
performances.
Among
four
dyes,
NR
demonstrated
highest
adsorption
energy
evident
charge
transfer
at
interface.
Following
preparations
a
freeze‐drying
technique
obtained
quasi‐homogeneous
energetic
(NR‐AP‐5%).
The
large
interaction
force
between
promoted
rupture
chemical
bonds
Cl
O
proved
by
TG‐MS,
showing
excellent
energy‐release
performance
decreased
exothermic
peak
437.0
to
355.5
°C.
Correspondingly,
activation
reduced
213.59
107.72
kJ
mol
−1
,
largely
increased
heat
release
447.29
1014.86
J
g
.
In
addition,
inert
endowed
considerable
advances
performances
achieving
remarkably
impact
friction
sensitivity
35
288
N,
respectively.
This
unique
assembly
structure
provides
novel
strategy
achieve
high‐effective
catalysis
for
functional
Langmuir,
Journal Year:
2022,
Volume and Issue:
38(49), P. 15234 - 15244
Published: Dec. 1, 2022
As
a
new
type
of
carbon
material,
graphene
oxide
aerogel
(GA)
is
widely
used
in
catalysis
due
to
its
porous
structure,
high-efficiency
adsorption,
and
superb
conductivity.
In
this
study,
GA
was
prepared
into
dense
coating
layer
surrounding
ZnCo2O4/ZnO
particles
form
composite
GA-ZnCo2O4/ZnO
by
means
hydrothermal,
blast
drying,
vacuum-freeze-drying
approach
applied
catalyze
the
thermal
decomposition
ammonium
perchlorate
(AP).
The
physicochemical
properties
obtained
were
characterized
different
analytical
methods.
Scanning
electron
microscopy
(SEM)
analysis
exhibited
that
coated
on
surface
ZnCo2O4/ZnO,
forming
layer.
Brunner
Emmet
Teller
(BET)
measurement
results
show
has
smooth
macropore
distribution
curve
larger
specific
area.
Moreover,
catalytic
effect
investigation
AP
with
GA-ZnCo2O4/ZnO:
high
temperature
(HTD)
peak
presence
5
wt
%
reduced
from
441
294
°C,
exotherm
expanded
205
1275
J/g
at
heating
rate
15
°C/min.
Through
calculation,
makes
activation
energy
Gibbs
free
pyrolysis
lower
so
reaction
easier
occur.
Thermogravimetric-mass
(TG-MS)
spectrometry
revealed
during
AP,
leveraged
synergistic
boosted
flow
electrons
ClO4-
O2
increased
absorption
gas
product
accelerate
pyrolysis.
These
provided
facile
strategy
prepare
GA-based
catalysts
extraordinary
application
prospects
domain
solid
propellants.
Small,
Journal Year:
2023,
Volume and Issue:
19(12)
Published: Jan. 13, 2023
The
interest
in
development
of
non-graphitic
polymeric
carbon
nitrides
(PCNs),
with
various
C-to-N
ratios,
having
tunable
electronic,
optical,
and
chemical
properties
is
rapidly
increasing.
Here
the
first
self-propagating
combustion
synthesis
methodology
for
facile
preparation
novel
porous
PCN
materials
(PCN3-PCN7)
using
new
nitrogen-rich
triazene-based
precursors
reported.
This
found
to
be
highly
precursor
dependent,
where
variations
terminal
functional
groups
newly
designed
(compounds
3-7)
lead
different
behaviors,
morphologies
resulted
PCNs.
foam-type
PCN5,
generated
from
5
comprehensively
characterized
shows
a
ratio
0.67
(C3
N4.45
).
Thermal
analyses
PCN5
formulations
ammonium
perchlorate
(AP)
reveal
that
has
an
excellent
catalytic
activity
thermal
decomposition
AP.
further
evaluated
closer-to-application
scenario,
showing
increase
18%
burn
rate
AP-Al-HTPB
(with
2
wt%
PCN5)
solid
composite
propellant.
developed
template-
additive-free
synthetic
specially
should
provide
platform
PCNs
variety
building
block
chemistries,
morphologies,
suitable
broad
range
technologies.
