Separation and Purification Technology,
Journal Year:
2024,
Volume and Issue:
343, P. 127097 - 127097
Published: March 13, 2024
This
research
reports
the
first
study
of
selective
leaching
ytterbium-lutetium
oxides
mixture
with
hydrophobic
deep
eutectic
solvents
(DESs),
and
high-efficiency
simple-prepared
were
used
to
separate
beneficiate
lutetium.
With
DESs,
which
formed
salicylic
acid
(SA)
or
3,5-dinitrosalicylic
(DNS)
as
hydrogen
bond
donor
(HBD)
tri-n-octyl
phosphine
oxide
(TOPO)
acceptor
(HBA),
powdered
mixtures
leached.
The
separation
factor
was
concluded
reached
2.11
a
solid-liquid
(S/L)
ratio
1/50
g/ml,
temperature
90℃
4
h
time,
experimental
conditions,
such
S/L
ratio,
reaction
explored.
formation
intermolecular
bonds
between
HBD
HBA
revealed
through
multiple
methods,
IR
(disappearance
OH
characteristic
peaks),
1H
NMR
(formation
sharp
peaks
not
present
for
intramolecular
bonds)
31P
(shift
P
=
O
higher
fields).
lattice
energies
solid
energies,
calculated
Gaussian
16
software
(0.87
eV
SA/TOPO
1:1
0.94
DNA/TOPO
1:1)
Born–Haber
cycle
(12957.56
kJ/Mol
Yb2O3
12993.59
Lu2O3),
provided
theoretical
illustration
preferential
Yb/Lu
dissolution
leading
separation.
stripping,
regeneration
recycling
capabilities
DESs
investigated
stripping
recirculation
experiments.
Based
on
these
results,
new
DES
agent
ytterbium
lutetium
is
identified
efficient
mothed
industrialization
potential.
Batteries,
Journal Year:
2024,
Volume and Issue:
10(2), P. 45 - 45
Published: Jan. 27, 2024
Urea,
a
basic
chemical
compound,
holds
diverse
applications
across
numerous
domains,
ranging
from
agriculture
to
energy
storage.
Of
particular
interest
is
its
role
as
hydrogen
bond
donor
(HBD).
This
specific
characteristic
has
propelled
utilization
an
essential
component
in
crafting
deep
eutectic
solvents
(DESs)
for
battery
electrolytes.
Incorporating
urea
into
DESs
presents
promising
avenue
address
environmental
concerns
associated
with
traditional
electrolytes,
thereby
advancing
technology.
Conventional
often
composed
of
hazardous
and
combustible
solvents,
pose
significant
risks
upon
improper
disposal
potentially
contaminating
soil
water
threatening
both
human
health
ecosystems.
Consequently,
there
pressing
need
eco-friendly
alternatives
capable
upholding
high
performance
safety
standards.
DESs,
categorized
organic
salts
resulting
the
blending
two
or
more
compounds,
have
emerged
contenders
next
generation
Urea
stands
out
among
DES
electrolytes
by
enhancing
ion
transport,
widening
electrochemical
window
stability
(ESW),
prolonging
cycle
life.
Further,
non-toxic
nature,
limited
flammability,
elevated
thermal
play
pivotal
roles
mitigating
issues
Laboratory
testing
urea-based
various
systems,
including
Al-ion,
Na-ion,
Zn-ion
batteries,
already
been
demonstrated.
review
examines
evolution
elucidating
their
structure,
molecular
interaction
mechanisms,
attributes,
preparation
methodologies.
Fluid Phase Equilibria,
Journal Year:
2024,
Volume and Issue:
582, P. 114086 - 114086
Published: March 26, 2024
Deep
eutectic
solvents
(DESs)
are
promising
and
sustainable
substitutes
for
organic
in
various
applications.
The
knowledge
of
their
density
viscosity
at
different
temperatures
pressures
is
crucial
the
corresponding
process
design.
However,
most
literature
primarily
focuses
on
predicting
these
properties
atmospheric
pressure.
In
this
study,
we
employed
perturbed
chain
polar
statistical
associating
fluid
theory
(PCP-SAFT)
model
entropy
scaling
method
to
predict
DESs'
elevated
pressures.
2831
data
points
38
DESs
1018
31
were
used
evaluate
accuracy
applied
methods.
pure
component
PCP-SAFT
parameters
choline
chloride
(ChCl)
regressed
using
ChCl-based
DES
It
was
found
that
can
provide
satisfactory
predictions
pressure,
even
without
system-specific
binary
interaction
parameter
(kij=0).
accurate
prediction
pressure
necessitated
inclusion
(kij=aijT+bij)
model.
coefficients
aij
andbij,
derived
from
experimental
or
Accurate
observed
across
entire
range,
whereas
effective
confined
a
specific
range.
Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(25), P. 11110 - 11120
Published: June 12, 2024
Deep
eutectic
solvents
(DESs)
have
gained
significant
attention
as
green
for
liquid–liquid
extraction
applications.
Predictive
thermodynamic
models
can
identify
suitable
DESs
a
specific
separation
problem.
To
this
end,
we
conducted
comprehensive
evaluation
of
the
conductor-like
screening
model
real
(COSMO-RS)
to
predict
equilibrium
(LLE)
in
systems
containing
DESs.
The
TZVP
and
TZVPD-FINE
parameter
sets
COSMO-RS
were
considered,
salts
modeled
associated
or
fully
dissociated
ions.
results
showed
that
predicted
LLE
all
with
an
average
root
mean
square
deviations
(RMSDs)
below
10%
represented
lower
RMSD
nonsalt
than
salt-based
predictions
using
set
slightly
better
set.
Nevertheless,
solute
distribution
between
phases
not
accurate
enough
compared
experimental
data
either
sets.
largely
overestimated
partition
coefficients
aromatic
heterocyclic
solutes
alkanes
DES.
On
other
hand,
acceptable
RMSDs
reliable
observed
alcohol
Given
complexity
describing
interactions
quaternary
salts,
further
improvements
are
still
needed.
This
study
highlighted
potential
shortcomings
tool
utilize
DES
