ACS Omega,
Год журнала:
2024,
Номер
9(28), С. 30954 - 30962
Опубликована: Июль 6, 2024
Behaviors
of
asphaltene
molecules
in
toluene
under
a
shear
force
field
were
investigated
by
dissipative
particle
dynamics
(DPD).
The
results
showed
that
aggregated
into
nanoaggregates
(NAs)
three
forms,
mainly
the
face-to-face
type,
which
contained
up
to
7
molecules.
In
aggregates,
distance
between
aromatic
sheets
(ASes)
adjacent
was
about
6
Å,
and
minimum
5.49
Å.
composition
NAs
changed
dynamically.
absence
shear,
aggregates
lasted
for
more
than
3000
ps
8000
ps.
an
aggregate
might
reaggregate
once
dispersed.
Both
number
size
decreased
field,
duration
less
1000
direction
ASes
distributed
randomly
when
rate
zero.
Once
sheared,
angle
plane
while
range
it
expanded.
tended
be
parallel
two
concentrated
below
40°.
As
increased,
distribution
concentrated.
International Journal of Molecular Sciences,
Год журнала:
2023,
Номер
24(19), С. 14805 - 14805
Опубликована: Сен. 30, 2023
In
the
heavy
petroleum
industry,
development
of
efficient
demulsifiers
for
effective
breaking
interfacially
active
asphaltenes
(IAA)-stabilized
water-in-heavy
oil
(W/HO)
emulsions
is
a
highly
attractive
but
challenging
goal.
Herein,
novel
nitrogen
and
oxygen
containing
demulsifier
(JXGZ)
with
strong
hydrogen
bonding
has
been
successfully
synthesized
through
combining
esterification,
polymerization
amidation.
Bottle
tests
indicated
that
JXGZ
effectual
in
quickly
demulsifying
IAA-stabilized
W/HO
emulsions;
complete
dehydration
(100%)
to
could
be
achieved
4
min
at
55
°C
using
400
ppm
JXGZ.
addition,
effects
concentration,
temperature
time
on
demulsification
performance
are
systematically
analyzed.
Demulsification
mechanisms
reveal
excellent
attributed
between
water
molecules
(dual
swords
synergistic
effect
under
bond
reconstruction).
The
interaction
"dual
effect"
generated
by
two
types
bonds
can
break
non-covalent
force
(π-π
stacking,
Van
der
Waals
force,
bonds)
IAA
oil-water
interface,
promote
aggregation
coalescence
finally
achieve
emulsions.
These
findings
indicate
shows
engineering
application
prospects
emulsions,
this
work
provides
key
information
developing
more
chemical
suitable
large-scale
industrial
applications.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(45), С. 24598 - 24607
Опубликована: Янв. 1, 2023
Fully
biobased
and
self-growing
Janus
membrane
without
additives
or
blending.
Interface
design
enabling
mycelium
growth
facile
harvesting.
Exploitation
of
hydrophobins
for
membranes.
Membrane
contactor
was
leveraged
to
grow
mycelium.
