Propellants Explosives Pyrotechnics,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 28, 2024
ABSTRACT
A
short
review
about
ferrocene‐based
burning
rate
catalysts
(FBRC)
for
solid
composite
propellants
is
presented.
Historically,
transition
metal
oxides
(TMO)
have
been
utilized
as
(BRC)
since
the
start
of
rocket
propellant
development.
However,
these
compounds
a
marked
tendency
to
migrate
through
grain
and
crystallize
at
boundary
surfaces.
Consequently,
FBRC
emerged
an
alternative
TMO.
After
reviewing
recent
advances
in
field,
we
suggest
that
continued
use
Catocene
[2,2′‐bis(ethylferrocenyl)propane]
Butacene
liquid
BRC
choice
based
on
trade‐off
between
high
rates,
limited
migration
from
propellant,
simpler
synthetic
pathways,
lower
costs
production
comparison
with
later
developments
area
FBRC.
Then,
this
work
aims
contribute
state
art
research,
highlighting
importance
Butacene,
most
field
FBRC,
particularly
regarding
their
role
decreasing
decomposition
temperature
ammonium
perchlorate
and/or
increasing
rate.
Abstract
The
sluggish
oxygen
diffusion
kinetics
at
the
triple‐phase
boundary
of
air
cathode
significantly
limit
optimal
power
output
Zn‐air
batteries
(ZABs).
Inspired
by
“lotus
effect”,
this
study
developed
a
bifunctional
electrocatalyst,
Co─NCNTs,
featuring
lotus
leaf‐like
structure,
and
constructed
3D
hydrophobic
architecture
to
expand
boundaries.
Consequently,
Co─NCNTs
electrode
(contact
angle
>140°)
demonstrated
enhanced
adsorption
on
surface
compared
hydrophilic
Co─NC
<70°).
assembled
ZABs
incorporating
lotus‐effect‐inspired
bionic
achieved
remarkable
density
341
mW
cm
−2
,
nearly
double
that
Co─NC‐based
battery
(178
),
exhibited
exceptional
cycling
stability,
operating
continuously
for
700
h
current
10
mA
.
This
work
highlights
efficacy
interface
engineering
in
improving
reaction
cathodes
through
design,
offering
promising
strategy
enhancing
oxygen‐involved
energy
storage
systems.
Journal of The Electrochemical Society,
Год журнала:
2024,
Номер
171(9), С. 097513 - 097513
Опубликована: Сен. 2, 2024
Although
chloramphenicol(CAP)
plays
a
critical
role
in
many
medical
treatments,
its
abuse
is
not
only
seriously
toxic
to
humans
but
also
ecologically
harmful
when
discharged
into
the
water.
Therefore,
it
of
great
significance
realize
rapid
and
efficient
detection
CAP.
2D
MOFs
Cu
3
(HITP)
2
(HITP
=
2,3,6,7,10,11-hexaiminotriphenylene)
with
higher
electrical
conductivity
than
conventional
were
synthesized
using
hydrothermal
methods.
Fc-NH
,
as
an
electron
donor,
was
dispersed
on
surface
by
physical
doping.
The
nanocomposite
/Fc-NH
has
excellent
adsorption
properties
conductivity.
It
used
construct
electrochemical
sensor
exhibited
superior
performance
Electrochemical
reduction
CAP
/GCE
investigated
cyclic
voltammetry
differential
pulse
voltammetry.
results
show
that
much
wider
linear
range
0.5
∼
2100
μm
previous
studies
detecting
limit
low
0.43
μm.
sensing
platform
reported
this
work
exhibits
reproducibility,
selectivity,
stability,
recovery
rate
actual
sample
ranged
from
97.1%
102.4%.
This
provides
new
strategy
for
antibiotic
extends
application
triphenylene-based
field.
Propellants Explosives Pyrotechnics,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 19, 2024
Abstract
The
advancement
of
solid
rocket
technology
has
increased
demand
for
high‐performing
propellants,
particularly
in
the
aerospace
industry.
Solid
propellants
are
an
essential
component
engines,
and
their
stable
combustion
adjustable
burning
rate
throughout
a
wide
pressure
range
significantly
affect
performance
motors.
modifiers
include
catalysts
inhibitors.
motors
different
purposes
require
with
rates.
Using
that
burn
at
slower
is
beneficial
smooth
release
propellant
energy,
reducing
loss
energy
process
high
improving
endurance
time
missile
engines.
Therefore,
it
necessary
to
decrease
propellant.
This
article
summarizes
development
inhibitors
(BRIs)
analyzes
mechanisms
behaviors
BRIs,
including
amide‐based
compounds,
metal
salts,
cationic
surfactants,
propellants.
Propellants Explosives Pyrotechnics,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 28, 2024
ABSTRACT
A
short
review
about
ferrocene‐based
burning
rate
catalysts
(FBRC)
for
solid
composite
propellants
is
presented.
Historically,
transition
metal
oxides
(TMO)
have
been
utilized
as
(BRC)
since
the
start
of
rocket
propellant
development.
However,
these
compounds
a
marked
tendency
to
migrate
through
grain
and
crystallize
at
boundary
surfaces.
Consequently,
FBRC
emerged
an
alternative
TMO.
After
reviewing
recent
advances
in
field,
we
suggest
that
continued
use
Catocene
[2,2′‐bis(ethylferrocenyl)propane]
Butacene
liquid
BRC
choice
based
on
trade‐off
between
high
rates,
limited
migration
from
propellant,
simpler
synthetic
pathways,
lower
costs
production
comparison
with
later
developments
area
FBRC.
Then,
this
work
aims
contribute
state
art
research,
highlighting
importance
Butacene,
most
field
FBRC,
particularly
regarding
their
role
decreasing
decomposition
temperature
ammonium
perchlorate
and/or
increasing
rate.
