The
hydrodeoxygenation
of
amide
to
amine
is
one
the
most
important
synthetic
approaches
in
chemical
engineering.
However,
low
reactivity
and
poor
selectivity
remain
big
challenges
for
catalytic
amides.
Here,
Ru-VOx/TiO2
catalysts
with
different
V/Ru
atomic
ratios
were
prepared
sequential
impregnation
method.
physicochemical
properties
characterized
by
using
XRD,
Raman,
TEM,
CO
chemisorption,
NH3-TPD,
H2-TPR,
XPS,
Formamide-DRIFTS.
hydrogenation
butyramide
as
a
model
reaction
was
used
evaluate
performance.
conversion
butylamine
varied
ratio
volcano-type
relationship,
2V-4Ru/TiO2
catalyst
(V/Ru
=
1)
presented
best
performance
(96%
82%
selectivity)
at
423
K
5
MPa
H2.
also
reused
five
successive
times
without
an
obvious
decline
either
activity
or
selectivity,
showing
excellent
stability.
Based
on
characterization
evaluation
results,
interaction
between
Ru
nanoparticles
(∼2
nm)
VOx
species
promoter
generated
abundant
Ru-VOx
boundary
V4+
adjacent
oxygen
vacancies
(Ru-Vo-V4+).
As
1,
catalyst,
monolayer
dispersed
species,
maximum
showed
amine.
minimized
surface
acidity
suppressed
secondary
side
reaction.
Moreover,
evaluations
various
amides
including
aliphatic
primary
cyclic
90–99%
78–99%
corresponding
amines,
suggesting
wide
applicability
catalyst.
study
provides
highly
efficient
strategy
improve
optimizing
metal
oxide
promoters.
Green Chemistry,
Journal Year:
2024,
Volume and Issue:
26(19), P. 9957 - 9992
Published: Jan. 1, 2024
This
review
highlights
recent
advancements
in
the
selective
conversion
of
biomass-derived
furfural
to
high-value
platform
chemicals
over
various
heterogeneous
catalytic
systems.
Green Chemistry,
Journal Year:
2024,
Volume and Issue:
26(11), P. 6511 - 6519
Published: Jan. 1, 2024
A
Pt–Fe
bimetallic
catalyst
is
developed
to
produce
1,2-pentanediol
from
furfural
under
mild
conditions
of
140
°C
and
0.1
MPa
H
2
,
affording
by
far
the
highest
production
rate.
Fuel Processing Technology,
Journal Year:
2024,
Volume and Issue:
256, P. 108073 - 108073
Published: March 14, 2024
Hydrodeoxygenation
(HDO)
reactions
are
extensively
employed
in
the
conversion
of
biomass
to
advanced
fuels,
which
rely
heavily
on
bifunctional
catalysts
that
contain
both
a
metal
component
and
an
acidic
component.
A
significant
challenge
development
HDO
is
need
reduce
costs
while
simultaneously
enhancing
catalytic
efficiency.
Here,
series
Ru@W/ZrO2
with
extremely
low
loading
Ru
(0.5
wt%)
were
successfully
synthesized
using
different
or
W
sequences
Ru/W
mass
ratios.
The
applied
reaction
lignin-derived
phenols,
their
physical
chemical
characteristics
revealed
by
various
characterization
techniques,
including
XRD,
H2-TPD,
NH3-TPD,
XPS.
results
suggest
synthesis
method
post-loading
leads
improved
exposure
utilization
low-loaded
Ru,
effectively
serves
as
active
sites
for
hydrogenation
reactions.
Under
same
conditions,
catalyst
achieved
complete
phenol
into
cyclohexane,
simultaneous
only
yielded
42%
cyclohexane.
In
addition,
ratios
have
also
shown
effects
performance
catalyst.
exhibits
highest
activity
when
ratio
10,
further
supported
kinetic
experiments.
This
study
highlights
significance
sequence
noble
metals
metal/acid
highly
catalysts,
lays
groundwork
efficient
conversion.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(18), P. 13672 - 13683
Published: Aug. 29, 2024
Waste
protein-derived
l-lysine
was
decarboxylated
and
hydrogenated
to
1,5-pentanediamine
(1,5-PDA)
with
great
potential,
which
is
an
important
feedstock
for
the
production
of
nylon
PA56
monomer.
In
this
study,
a
partially
coated
Ru-RuO2/BaHPO4
catalyst,
controlled
26.5%
surface
Ru0
species,
developed
from
RuO2/BaCO3
precursor
using
encapsulation
strategy
in
situ
generated
1,5-PDA
as
gelling
agent.
As
result,
via
intermediate
lysinal,
affording
selectivity
94.1%,
space-time
yield
0.97
g·gcat–1·h–1,
TON
374.6
at
170
°C.
The
Ru/RuO2-based
catalyst
demonstrated
strong
acid
over-reduction
resistance,
thereby
providing
way
prepare
robust
catalysts
synthesis
wide
range
amines
waste
amino
acids.
ACS Catalysis,
Journal Year:
2025,
Volume and Issue:
15(8), P. 6216 - 6225
Published: April 2, 2025
The
hydrogenation
of
amides
to
amines
is
an
important
reaction
in
the
synthesis
building
blocks
organic
chemistry.
However,
solvent-free
(requiring
heterogeneous
catalysts
and
high
temperatures)
challenging,
with
low
selectivity
obtained
due
further
hydrogenolysis
alcohol
amine
products.
Such
behavior
was
observed
for
a
CeO2-supported
Pt
catalyst
(Pt/CeO2).
Although
it
known
that
support
promotes
adsorption
amide
on
catalyst,
facilitates
hydrogenation,
their
individual
roles
conversion
how
they
impact
product
remain
unclear.
Using
operando
photoelectron
photoionization
coincidence
(PEPICO)
spectroscopy,
N-ethylpropionamide
studied
over
both
Pt/CeO2
CeO2.
experiments
reveal
active
below
150
°C
produce
selectivity.
Lewis
acidic
(CeO2)
also
at
higher
temperatures,
producing
ethylamine
propanal,
while
being
vulnerable
coking.
nanoparticles
mitigate
coke
formation,
catalyze
products
above
°C.
This
study
provides
insights
bifunctional
metal
oxide--metal
nanoparticle
facilitate
design
superior
catalysts.
