Macromolecules,
Год журнала:
2024,
Номер
57(15), С. 7462 - 7473
Опубликована: Июль 24, 2024
The
use
of
renewable
rosin
as
a
raw
material
to
prepare
rosin-based
polymers
with
good
properties
had
aroused
great
interest.
This
work
used
and
acid
deep
eutectic
solvent
[ZnCl2][FA]3
(synthesized
by
zinc
chloride
(ZnCl2)
formic
(FA))
catalyst
for
high
conversion
polymerized
rosin.
possessed
suitable
strength
(457
mV),
both
Brønsted
site
Lewis
site,
in
which
the
could
effectively
promote
isomerization
polymerization
rosin,
so
softening
point
(148.40
°C)
low
value
(125.23
mg
KOH/g)
was
obtained
under
following
conditions:
=
15
g,
mDES:mrosin
30%,
T
110
°C,
t
9
h.
maintained
catalytic
performance
all
5
cycles;
on
this
basis,
green
synthesis
technology
DES
system
given
not
only
promoted
further
application
but
also
realized
value-added
utilization
resource
In
addition,
formation
mechanism
systematically
explained
through
DFT
calculation,
reaction
over
explored,
provide
theoretical
basis
research.
Molecules,
Год журнала:
2023,
Номер
29(1), С. 98 - 98
Опубликована: Дек. 22, 2023
Lignocellulosic
biomass
represents
the
most
abundant
renewable
carbon
source
on
earth
and
is
already
used
for
energy
biofuel
production.
The
pivotal
step
in
conversion
process
involving
lignocellulosic
pretreatment,
which
aims
to
disrupt
lignocellulose
matrix.
For
effective
a
comprehensive
understanding
of
intricate
structure
its
compositional
properties
during
component
disintegration
subsequent
essential.
presence
lignin-carbohydrate
complexes
covalent
interactions
between
them
within
matrix
confers
distinctively
labile
nature
hemicellulose.
Meanwhile,
recalcitrant
characteristics
lignin
pose
challenges
fractionation
process,
particularly
delignification.
Delignification
critical
that
directly
impacts
purity
facilitates
breakdown
bonds
surrounding
cellulose.
This
article
discusses
two-step
approach
efficient
extraction,
providing
viable
paths
lignin-based
valorization
described
literature.
allows
creation
individual
streams
each
component,
tailored
extract
their
corresponding
compounds.
Abstract
Deep
eutectic
solvents
(DESs)
advanced
in
the
past
decade
as
new
generation
of
green
and
sustainable
extraction
reaction
media
biorefineries
a
multitude
chemical
biotechnological
processes.
Particularly,
enzyme
catalyzed
reactions
benefit
from
specific
properties
DESs,
which
not
only
ensure
good
substrate
solubility
but
also
enhance
stability
operational
efficiency.
Recent
studies
showed
that
natural
deep
(NADESs)
comprising
choline
chloride
or
betaine
hydrogen
bond
acceptor
large
spectrum
compounds,
such
carbohydrates,
polyols
carboxylic
acids,
donors,
can
have
multiple
functions,
acting
simultaneously
solvent,
medium,
source
catalyst.
This
novel
approach
for
utilization
multifunctional
reactive
(R‐NADESs)
catalytic
conversions
opens
way
to
development
greener
biocatalytic
chemo‐catalytic
processes,
with
simpler
downstream
processing
minimal
discarded
wastes,
will
speed
up
their
durable
implementation
industry.
paper
reviews
innovative
applications
R‐NADESs
synthesis
diversity
high
value
chemicals
materials,
including
biosurfactants,
flavors,
biobased
building
blocks
polymers,
highlight
on
esterification,
transesterification,
glycerolysis,
polymerization,
redox
reactions.
Green Chemical Engineering,
Год журнала:
2024,
Номер
6(1), С. 36 - 53
Опубликована: Июнь 1, 2024
This
article
presents
a
comprehensive
overview
of
recent
advancements
in
natural
product
extraction,
focusing
on
the
evolution
from
deep
eutectic
solvents
(DESs)
to
systems
(DESys)
for
extraction.
DESs,
known
their
environmentally
friendly
properties,
have
become
crucial
extracting
various
products
plants,
including
micromolecules,
lignin,
and
polysaccharides.
Research
into
extraction
mechanism
reveals
that
target
compounds
typically
form
hydrogen
bonds
with
effectively
becoming
part
solvent
system.
insight
has
led
development
DESys
method,
where
bond
acceptors
(HBAs)
donors
(HBDs)
are
directly
mixed
sample
system
containing
compounds.
The
shift
DES-based
DESys-based
introduces
innovative
approaches
integral
system,
allowing
one-step
dissolution
methodology
eliminates
need
pre-prepared
simplifying
processes
enhancing
efficiency.
Additionally,
strategies
DESs
recycling
reuse
contribute
sustainability
efforts,
offering
cost-effective
solutions.
expanding
applications
cosmetics,
food,
industry,
environmental
fields
highlight
promising
potential.
By
delineating
transition
products,
this
review
offers
valuable
insights
advancing
practice
green
chemical
engineering.
