European Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
28(5)
Published: Dec. 23, 2024
Abstract
A
novel
and
efficient
protocol
for
the
conversion
of
dimethyl
1,
4‐cyclohexane
dicarboxylate
(DMCD)
into
4‐cyclohexanedimethanol
(CHDM)
was
proposed
via
catalytic
transfer
hydrogenation
(CTH).
In
this
approach,
methanol
functioned
as
both
hydrogen
donor
solvent,
a
cost‐effective
Cu/ZnO/Al₂O₃/ZrO₂
catalyst
utilized
facilitating
reaction.
Under
specified
conditions
at
235
°C,
96.61
%
with
selectivity
60.71
achieved.
To
elucidate
reaction
mechanism,
comprehensive
characterizations
were
conducted
to
examine
catalysts
varying
ZrO
2
contents.
The
investigation
revealed
that
begins
adsorption
DMCD
onto
acidic
sites
catalyst,
followed
by
their
activation
on
reduced‐state
Cu.
Microstructures,
Journal Year:
2025,
Volume and Issue:
5(2)
Published: Feb. 25, 2025
Single
atom
catalyst
(SAC)
show
significant
promise
in
electrocatalytic
carbon
dioxide
reduction
reaction
(eCO2RR)
to
produce
valuable
chemicals,
representing
one
of
the
most
promising
ways
achieve
a
neutral
cycle.
Methane
is
many
products
from
eCO2RR.
Rational
design
SAC
through
deliberate
coordination
regulation
and
controlled
synthesis
at
low
temperatures
toward
methane
production
remains
very
limited.
Herein
this
paper,
Cu
with
four
oxygen
atoms
(Cu-O4)
were
prepared
by
soaking
nanocrystals
on
support
acetic
acid
solution
60
°C
for
12
h.
The
structure
was
revealed
extended
X-ray
absorption
fine
spectrum
photoelectron
spectroscopy.
Cu-O4
demonstrates
excellent
activity
selectivity
towards
production,
Faradaic
efficiency
(FE)
63.0%
partial
current
density
200.5
mA
cm-2.
Theoretical
calculation
indicates
less
positive
charge
center
stronger
delocalization
than
Cu-N4
due
π
bonding
interaction
SAC,
which
stabilizes
intermediates
lowers
potential
determining
step
SAC.
Strong
hydrogen
adsorption
suppresses
evolution
may
favor
hydrogenation
methane.
limiting
that
more
favored
CO,
methanol
formate,
corroborating
high
This
work
highlights
importance
environment
steering
Green Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
A
Co-SAC
with
oxidase-like
active
sites
(CoN
4
)
has
been
fabricated
for
the
construction
of
quinazolines
and
quinazolinones
using
ethanol
as
C
2
-synthon.
Kinetic
studies
suggest
that
dehydrogenation
is
RDS
reaction.
Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(46), P. 20434 - 20447
Published: Nov. 11, 2024
Ni5Ga3-based
catalysts
hold
promise
for
CO2
reduction
into
methanol
because
the
operating
pressure
is
significantly
lower
than
that
required
commercial
catalysts.
While
synergy
between
Ni5Ga3
and
Ga2O3
crucial
in
synthesis,
controllable
formation
of
on
nanoparticles
their
structure-related
interactions
under
varied
preparation
conditions
remain
underexplored.
This
study
introduces
a
series
derived
from
oxide
precursors
prepared
via
combustion
method
with
different
fuels
like
oxalic
acid,
citric
urea.
Besides
processes
were
studied,
various
characterization
techniques
disclosed
components
physicochemical
properties
these
can
be
strongly
influenced
by
choice
fuel,
affecting
nanoparticle
size
along
content
and,
consequently,
catalytic
performance
toward
reduction.
The
acid
composed
smallest
most
abundant
species
thus
exhibited
best
compared
to
its
counterpart.
In
addition,
diffuse
reflectance
infrared
Fourier
transform
spectroscopy
(DRIFTS)
analysis
was
performed
provide
insights
reaction
intermediates
mechanisms.
highlights
critical
role
efficiency
underscores
influence
synthesis
parameters
hydrogenation
methanol.
