ChemCatChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 15, 2024
Abstract
A
tandem
catalyst
system
comprised
of
trifluoromethanesulfonic
(triflic
acid,
HOTf)
or
hafnium
tetratriflate
(Hf(OTf)
4
)
and
Ru/C
in
glacial
acetic
acid
(HOAc)
as
the
solvent
at
200
°C
∼
7
MPa
hydrogen
pressure
a
batch
reactor
converts
penta‐acetyl‐xylitol
((2
R
,3
,4
S
)‐pentane‐1,2,3,4,5‐penta‐acetoxy‐pentane)
unprotected
xylitol
to
3‐acetoxymethylene‐tetrahydrofuran
(3‐AMT)
up
15%
yield
full
conversion.
comparative
analysis
by
SEM‐EDS
XPS
fresh
commercial
versus
reused
recovered
after
five
cycles
shows
increasing
aggregation
ruthenium
larger
particles
with
concomitant
decrease
3‐AMT
8%–9%
for
four
five.
its
hydrolysis
product
3‐hydroxymethyl‐tetrahydrofuran
(3‐HMT)
are
valuable
synthons
preparation
agrochemicals,
pharmaceuticals,
specialty
polyurethanes
polyesters.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(37)
Published: May 29, 2024
Abstract
Biomass
assumes
an
increasingly
vital
role
in
the
realm
of
renewable
energy
and
sustainable
development
due
to
its
abundant
availability,
renewability,
minimal
environmental
impact.
Within
this
context,
5‐hydroxymethylfurfural
(HMF),
derived
from
sugar
dehydration,
stands
out
as
a
critical
bio‐derived
product.
It
serves
pivotal
multifunctional
platform
compound,
integral
synthesizing
various
chemicals,
including
furan‐based
polymers,
fine
biofuels.
The
high
reactivity
HMF,
attributed
highly
active
aldehyde,
hydroxyl,
furan
ring,
underscores
challenge
selectively
regulating
conversion
obtain
desired
products.
This
review
highlights
research
progress
on
efficient
catalytic
systems
for
HMF
synthesis,
oxidation,
reduction,
etherification.
Additionally,
it
outlines
techno‐economic
analysis
(TEA)
prospective
directions
production
chemicals.
Despite
significant
catalysis
research,
certain
process
routes
demonstrating
substantial
economics,
with
key
indicators
surpassing
petroleum‐based
products,
gap
persists
between
fundamental
large‐scale
industrialization.
is
lack
comprehensive
engineering
bio‐based
making
commercialization
distant
goal.
These
findings
provide
valuable
insights
further
field.
A
new
reaction
mechanism
involving
the
adsorption
of
FFA
with
two
oxygen
atoms
filling
into
vacancies
at
interface
Co
and
CeO
x
is
proposed.
The
cooperation
between
0
enables
efficient
hydrogenolysis
to
1,5-PeD.
