Abstract
The
synthesis
of
hexagonal
boron
nitride
(h‐BN)
by
the
reaction
oxide
(B
2
O
3
)
and
NH
represents
an
environmentally
friendly
economical
preparation
process.
Employing
a
catalyst
to
improve
issues
including
low
conversion
rate
is
important
facilitate
implementation
this
method.
In
study,
we
studied
effect
adding
lithium
(Li
O)
with
mass
fraction
14%–25%
on
process
between
B
at
1000–1200
°C.
During
process,
Li
reacts
form
borate
melt.
melt
facilitates
diffusion
,
benefits
dissolution
precipitation
BN,
thus
promoting
growth
h‐BN.
A
nearly
complete
h‐BN
was
observed
17%
when
heating
1200
°C
for
240
min.
products
exhibit
good
crystallinity
(graphitization
index
3.4)
sheet
structure,
thickness
32
nm
diameter
400–500
nm.
These
results
provide
reference
optimizing
Molecules,
Год журнала:
2024,
Номер
29(17), С. 4102 - 4102
Опубликована: Авг. 29, 2024
Solketal,
a
widely
used
glycerol-derived
solvent,
can
be
efficiently
synthesized
through
heterogeneous
catalysis,
thus
avoiding
the
significant
product
losses
typically
encountered
with
aqueous
work-up
in
homogeneous
catalysis.
This
study
explores
catalytic
synthesis
of
solketal
using
solid
acid
catalysts
derived
from
recovered
carbon
blacks
(rCBs),
which
are
obtained
pyrolysis
end-of-life
tires.
was
further
converted
into
introduction
acidic
functional
groups
concentrated
H
