Chemistry,
Journal Year:
2024,
Volume and Issue:
6(5), P. 941 - 961
Published: Sept. 8, 2024
Polyols
such
as
1,5-pentadiol,
1,6-hexanediol,
and
1,2,6-hexanetriol
are
crucial
chemicals,
traditionally
derived
from
non-renewable
fossil
sources.
In
the
pursuit
of
sustainable
development,
exploring
renewable
environmentally
benign
routes
for
their
production
becomes
imperative.
Furfural
5-hydroxymethylfurfural
C5
C6
biomass-derived
platform
molecules,
which
have
potential
in
synthesis
various
polyols
through
hydrogenation
hydrogenolysis
reactions.
Currently,
there
is
an
extensive
body
literature
transformation
furan
compounds.
However,
a
comprehensive
review
compounds
to
lacking.
We
summarized
recent
years
about
ring-opening
reaction
involved
converting
polyols.
This
article
reviews
research
progress
on
furfural,
furfuryl
alcohol,
2-methylfuran
1,2-pentadiol,
1,4-pentadiol,
1,2,5-pentanetriol,
well
1,2-hexanediol,
1,2,6-hexanetriol.
The
effects
supported
Pd,
Pt,
Ru,
Ni,
Cu,
Co,
bimetallic
catalysts
discussed
examining
synergistic
metal
sites,
acidic/basic
hydrogen
spillover,
etc.
Reaction
parameters
like
temperature,
pressure,
solvent
considered.
ring
opening
catalytic
rings
summarized,
mechanisms
single-metal
processes
conditions
summarized.
It
believed
that
this
will
act
key
reference
inspiration
researchers
field.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(9), P. 6623 - 6632
Published: April 16, 2024
The
formation
and
stabilization
of
Cu+
species
are
important
to
develop
efficient
Cu-based
catalysts
for
the
catalytic
transfer
hydrodeoxygenation
(CTHDO)
renewable
biomass
value-added
products
but
challenging.
Herein,
we
demonstrate
that
introduction
atomically
dispersed
Zr
into
a
CuOx
matrix
(Cu10Zr0.39Ox)
greatly
promoted
its
activity
stability
CTHDO
5-hydroxymethylfurfural
(HMF)
2,5-dimethylfuran
(DMF).
In
particular,
almost
quantitative
DMF
yield
could
be
implemented
over
Cu10Zr0.39Ox
accompanied
by
an
impressive
rate
8.1
mmolDMF·gcat–1·h–1,
which
outperforms
existing
works
HMF
DMF.
Experimental
theoretical
observations
revealed
electronic
interactions
between
doped
atom
enabled
generation
ample
stable
species.
single-atom
also
adsorption
activation
substrates
worked
synergistically
with
boost
reducing
reaction
energy
barriers.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(13), P. 10009 - 10021
Published: June 19, 2024
Selective
hydrogenolysis
of
C–O
bonds
in
biomass-derived
oxygenated
molecules
is
great
significance
for
the
conversion
biomass
to
chemicals
and
fuels,
especially
inert
C–O–C
tetrahydrofuran
rings.
However,
lack
precise
active
sites
results
low
activity
this
reaction.
In
work,
metal–support
interfacial
structure
Ni–La2O3
catalyst
was
well-controlled
by
reducing
LaNiO3
perovskite
at
different
temperatures.
During
reduction,
exsolution
segregation
Ni
led
formation
metallic
nanoparticles
oxygen-vacant
Ni2+-Ov-La3+
sites.
Hydrogen
spillover
from
interface
promoted
situ
generation
La–OH
species
under
reaction
conditions.
At
same
time,
oxygen
vacancies
can
accommodate
spilled
H,
inducing
La–H
species.
The
hydroxyl
group
tetrahydrofurfuryl
alcohol
(THFA)
interacted
with
through
a
metal
alkoxide
intermediate,
which
subsequently
hydrogenolyzed
produce
1,5-pentanediol
(1,5-PeD).
intimate
bifunctional
on
have
strong
synergistic
effect,
endowing
high
THFA
activity.
proposed
assisted
bond
provides
an
idea
design
efficient
hydrodeoxygenation
catalysts
upgrading.
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(8), P. 499 - 499
Published: Aug. 1, 2024
With
the
continuous
depletion
of
fossil
resources
and
deterioration
global
climate,
it
is
particularly
urgent
to
find
green
sustainable
renewable
replace
non-renewable
resources.
Renewable
biomass,
which
converts
stores
light
energy
into
chemical
through
photosynthesis
by
plants,
has
received
widespread
attention
due
its
simultaneous
resource
properties.
Therefore,
this
article
focuses
on
lignocellulose,
an
important
component
in
fields
conversion
high-value-added
preparation.
A
detailed
review
was
conducted
application
catalysts
biomass
bio-char,
bio-oil,
bio-gas,
high-value
added
chemicals
their
derivatives,
represented
5-hydroxymethylfurfural
(5-HMF)
levulinic
acid
(LA).
At
same
time,
difficulties
challenges
encountered
were
analyzed,
new
ideas
proposed
for
future
development
directions,
so
as
provide
pathways
efficient
chemicals.
Journal of Advanced Ceramics,
Journal Year:
2024,
Volume and Issue:
13(7), P. 956 - 966
Published: May 6, 2024
To
meet
the
emerging
demands
for
thermal
protection
materials
of
hypersonic
aircraft,
developing
porous
ultrahigh
temperature
ceramics
with
both
robust
mechanical
properties
and
superior
insulation
performance
is
a
critical
challenge.
Herein,
we
report
novel
(Ta0.2Nb0.2Ti0.2Zr0.2Hf0.2)C
high-entropy
carbide
(PHEC)
ceramic
fabricated
by
self-foaming
method
using
commercially
available
metal
chloride
furfuryl
alcohol
as
precursor.
The
PHEC
constructed
microspheres
size
2
µm,
leading
to
high
porosity
91.3%
an
interconnected
frame.
These
consist
grains
(20
nm),
resulting
in
abundant
interface
nanosized
pores
ceramic.
Due
its
unique
hierarchical
structure,
prepared
has
outstanding
compressive
strength
(28.1±2
MPa)
exceptionally
low
conductivity
at
room
(0.046
W·m−1·K−1).
This
makes
it
promising
material
application.
work
provides
cost-effective
facility
strategy
produce
ceramics.
Hydrodeoxygenation
is
the
key
technology
for
realizing
conversion
of
biomass
into
high
value-added
chemicals,
but
usually
encounters
low
efficiency
and
harsh
conditions
due
to
rich
electron
density
strong
C-O
bonds
O-containing
groups.
Herein,
an
efficient
catalyst
precisely
constructed
with
abundant
acidic
O
dopants
well-exposed
oxidized
Pd
centers
hydrodeoxygenation
vanillin.
Through
a
tannic
acid-assisted
strategy,
it
on
alumina
that
electron-deficient
species
doped
as
ether
types
in
carbon
along
ultra-small
PdO
nanoparticles.
The
collaboration
sites
from
boosts
vanillin
valuable
2-methoxy-4-methylphenol
99%
yield
turnover
frequency
value
752
h-1
under
mild
(80
oC,
0.5
MPa
H2),
significantly
surpassing
similar
catalysts
without
or
well
commercial
heterogeneous
homogeneous
catalysts.
Further
theoretical
calculation
studies
disclose
are
superior
metallic
hydrogenating
aldehyde
group,
important
promoting
subsequent
alcohol-based
deoxygenation
process.
