Green Energy & Environment,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 1, 2024
In
recent
years,
studies
focusing
on
the
conversion
of
renewable
lignin-derived
oxygenates
(LDOs)
have
emphasized
their
potential
as
alternatives
to
fossil-based
products.
However,
LDOs,
existing
complex
aromatic
mixtures
with
diverse
oxygen-containing
functional
groups,
pose
a
challenge
they
cannot
be
easily
separated
via
distillation
for
direct
utilization.
A
promising
solution
this
lies
in
efficient
removal
groups
from
LDOs
through
hydrodeoxygenation
(HDO),
aiming
yield
biomass
products
singular
components.
high
dissociation
energy
carbon-oxygen
bond,
coupled
its
similarity
hydrogenation
benzene
ring,
creates
competition
between
deoxygenation
and
ring
hydrogenation.
Considering
hydrogen
consumption
lignin
properties,
preference
is
directed
towards
generating
hydrocarbons
rather
than
saturated
Thus,
goal
selectively
remove
while
preserving
structure.
Studies
indicated
that
design
active
components
optimization
reaction
conditions
play
pivotal
roles
achieving
selective
deoxygenation,
but
summary
correlation
these
factors
mechanism
lacking.
This
review
addresses
gap
knowledge
by
firstly
summarizing
various
pathways
HDO
LDOs.
It
explores
impact
catalyst
strategies,
including
morphology
modulation,
elemental
doping,
surface
modification,
adsorption-desorption
dynamics
reactants
catalysts.
Secondly,
we
delve
into
application
advanced
techniques
such
spectroscopic
computational
modeling,
aiding
uncovering
true
sites
reactions
understanding
interaction
reactive
surface-interfaces.
Additionally,
fundamental
insights
obtained
are
highlighted.
Finally,
outline
challenges
lie
ahead
highly
These
include
development
detection
tools
species
activity
at
low
concentrations,
study
medium-catalyst
interactions,
theoretical
models
more
closely
approximate
real
situations.
Addressing
will
pave
way
catalysts,
thus
advancing
field
conversion.
Nano Letters,
Год журнала:
2024,
Номер
24(2), С. 696 - 702
Опубликована: Янв. 4, 2024
Selectively
achieving
the
photoreduction
of
carbon
dioxide
(CO2)
to
methane
(CH4)
remains
a
significant
challenge,
which
primarily
arises
from
complexity
protonation
process.
In
this
work,
we
designed
metal-vacancy
pair
sites
in
defective
metal
oxide
semiconductors,
anchor
reactive
intermediates
with
bridged
linkage
for
selective
produce
CH4.
As
an
example,
oxygen-deficient
Nb2O5
nanosheets
are
synthesized,
niobium–oxygen
vacancy
demonstrated
by
X-ray
photoelectron
spectroscopy
and
electron
paramagnetic
resonance
spectra.
situ
Fourier
transform
infrared
monitors
*CH3O
intermediate,
key
intermediate
CH4
production,
during
CO2
nanosheets.
Importantly,
built
regulate
formation
step
as
spontaneous
process,
making
reduction
preferred
method.
Therefore,
exhibit
rate
19.14
μmol
g–1
h–1,
selectivity
∼94.1%.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2022,
Номер
10(40), С. 13208 - 13243
Опубликована: Сен. 26, 2022
Arenes
are
an
important
class
of
intermediates
in
the
chemical
industry
that
have
been
widely
applied
pharmaceuticals,
fuels,
synthetic
resins,
and
so
on.
Given
growing
demand
for
arenes
unsustainability
petroleum-based
production
pathways,
hydrodeoxygenation
(HDO)
lignin-derived
phenolic
compounds
presents
a
promising
strategy
translating
lignin
materials
into
value-added
arenes.
Whereas
most
HDO
catalysts
perform
low
selectivity
due
to
presence
competing
processes
more
readily
saturate
aromatic
rings,
this
Perspective,
we
first
focus
on
latest
advances
sustainable
from
compounds.
Furthermore,
newest
achievements
different
types
their
reaction
mechanisms
involved
systematically
classified
summarized.
Lastly,
existing
challenges,
tentative
suggestions
improvement,
future
opportunities
within
attractive
field
given
with
aim
providing
new
research
ideas
stimulating
inspiration
wide
range
scientists
drive
toward
carbon-neutral
society
where
biomass
resources
play
major
role
fuels
chemicals.
