Single atoms in environmental catalysis: Breakthroughs in synthesis and application
Journal of Water Process Engineering,
Год журнала:
2024,
Номер
68, С. 106319 - 106319
Опубликована: Окт. 14, 2024
Язык: Английский
Pd/N-doped carbon dots@dendritic mesoporous silica nanospheres: A highly efficient catalyst for the hydrogenation of 4-nitrophenol
Nano Research,
Год журнала:
2024,
Номер
17(9), С. 7967 - 7974
Опубликована: Июль 12, 2024
Язык: Английский
Creation of Heterogeneous Single-Site Catalysts for RWGS Reaction: Ruthenium Complex on Porous Ionic Polymers via Electrostatic Interactions
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
17(9), С. 13773 - 13782
Опубликована: Фев. 24, 2025
Heterogeneous
single-metal-site
catalysts
(HSMSCs)
have
been
recognized
as
promising
materials
due
to
the
advantages
of
evenly
distributed
active
metal
sites,
easy
separation,
and
recyclability.
Herein,
we
construct
a
single-site
Ru
catalyst
on
porous
ionic
polymers
(Ru/PIPs-IL3)
via
electrostatic
interactions,
which
is
practical
useful
strategy
for
synthesizing
HSMSCs.
The
strong
interactions
(ΔH
=
-73.4
-83.5
kJ/mol
Ru-PPh4
Ru-P(vBn)(vPh)3,
respectively)
between
quaternary
phosphonium
cations
oxygen
anions
cyclopentadienyl
ligand
in
species
were
both
consolidated
by
DFT
calculation
X-ray
crystallography.
XPS,
ATR-IR,
HAADF-STEM,
EXAFS
analyses
ion
exchange
experiment
employed
characterize
structure
Ru/PIPs-IL3.
These
results
provide
compelling
evidence
that
PIPs-IL3
can
interact
with
Shvo's
manner
analogous
observed
(PPh4Cl),
thereby
anchoring
through
interactions.
Such
heterogeneous
Ru/PIPs-IL3
exhibited
twofold
activity
compared
homogeneous
TONCO
up
545
an
excellent
98.5%
CO
selectivity
low-temperature
reverse
water-gas
shift
reaction.
Язык: Английский
H2-Rich Gas Production from Gasification of Oily Sludge via Supercritical Water Technology: Synergy Effect of KOH, K2CO3, and Reaction Parameters
Jie Cheng,
Seyyed Abbas Nouri Gehraz,
Saadi Khodamoradi
и другие.
Chemical Engineering and Processing - Process Intensification,
Год журнала:
2024,
Номер
unknown, С. 110008 - 110008
Опубликована: Сен. 1, 2024
Язык: Английский
Pd/CQDs/TiO2–NH2 composite schottky catalyst for efficient hydrogen production from formic acid dehydrogenation under visible light
Fengqiu Chen,
Qiu Wang,
Shengda Lin
и другие.
International Journal of Hydrogen Energy,
Год журнала:
2024,
Номер
94, С. 1136 - 1145
Опубликована: Ноя. 16, 2024
Язык: Английский
Catalytic Synergy between Pd Nanoclusters and Ligand-Functionalized Layered Silicates for Improved Formic Acid Dehydrogenation
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(47), С. 64736 - 64744
Опубликована: Ноя. 19, 2024
The
synthesis
and
stabilization
of
Pd
nanoclusters
on
a
support,
as
well
simultaneously
achieving
optimal
catalytic
activity,
remain
challenging
tasks.
Functionalizing
the
support
surface
with
specific
ligands
offers
promising
solution,
but
it
often
requires
carefully
balancing
trade-offs
between
reaction
yield
catalyst
stability.
Here,
we
used
two
different
(propylamine
propylthiol)
to
functionalize
layered
silicate's
interlayer
for
nanocluster
stabilization.
For
dehydrogenating
formic
acid,
aminopropyl
groups
achieved
activity
∼27-fold
higher
than
that
thiopropyl
at
70
°C.
Our
density
functional
calculations
compared
adsorption
energetics
bonding
characteristics
single
atoms
Pd13
amino-
thio-functionalized
silicate
surfaces.
Pd–N
bonds
were
predicted
be
weaker
minimal
covalency,
while
Pd–S
exhibit
greater
covalency
due
4d–3p
hybridization,
resulting
in
better
However,
clusters
undergo
severe
structural
deformation
thiol-functionalized
surfaces,
smaller
overall
area
diminished
Язык: Английский
Metal–Support Interaction in Pt Nanodisk–Carbon Nitride Catalyst: Insight from Theory and Experiment
Nanomaterials,
Год журнала:
2024,
Номер
14(11), С. 921 - 921
Опубликована: Май 24, 2024
Metal–support
interaction
plays
a
critical
role
in
determining
the
eventual
catalytic
activity
of
metals
loaded
on
supporting
substrates.
This
can
sometimes
cause
significant
drop
metallic
property
metal
and,
hence,
reactions,
especially
those
for
which
low
charge
carrier
transfer
resistance
is
necessary
parameter.
Therefore,
there
should
be
case-by-case
experimental
or
theoretical
(or
both)
in-depth
investigation
to
understand
support
each
metal.
Here,
onto
layered
porous
carbon
nitride
(g-CN),
we
grew
single
crystalline
Pt
nanodisks
(Pt@g-CN)
with
lateral
average
size
21
nm,
followed
by
various
characterisations
such
as
electron
microscopy
techniques,
and
measurement
electrocatalytic
O2
reduction
reaction
(ORR).
We
found
that
intercalating
g-CN
interlayers
causes
an
increase
activity.
investigated
bonding
mechanism
between
platinum
using
density
functional
theory
applied
d-band
performance.
Analysis
Pt’s
states
electronic
population
across
layers
sheds
light
behaviour
nanoparticles,
particularly
relation
their
thickness
proximity
interface.
Our
simulation
reveals
optimum
~11
Å,
under
performance
deteriorates.
Язык: Английский
Catalytic hydrogenolysis of formic acid to hydrogen over heterogeneous catalysts: a review on modification strategies, catalyst deactivation and reaction mechanism
Applied Catalysis A General,
Год журнала:
2024,
Номер
unknown, С. 119972 - 119972
Опубликована: Сен. 1, 2024
Язык: Английский
Advancements in Pd-Based Supported Porous Nanocatalysts for the C-C Cross-Coupling Reactions
Catalysts,
Год журнала:
2024,
Номер
15(1), С. 16 - 16
Опубликована: Дек. 28, 2024
Palladium
(Pd)
is
a
4d
transition
metal
with
electronic
configuration
[Kr]
4d10
5s0,
and
it
one
of
the
most
widely
studied
metals
in
periodic
table
due
to
its
versatile
catalytic
role
organic
synthesis.
The
choice
ligands
that
can
coordinate
Pd
sites
plays
crucial
progress
reaction.
Due
coexistence
multiple
oxidation
states
(Pd(0)/Pd(II)),
active
catalysts
participate
various
stages
coupling
Pd-catalyzed
C-C
reactions
proceed
through
four
steps:
(1)
oxidative
addition
reactant
site,
(2)
transmetallation,
(3)
rearrangements
ligand
centers
(4)
reductive
elimination
products.
For
heterogeneous
nanocatalysts,
are
often
strongly
bound
(chelated)
solid
catalyst
surfaces.
In
this
review,
we
have
highlighted
advancements
made
nanocatalysts
an
emphasis
on
types
different
classes
porous
solids,
which
could
ligate
via
strong
covalent
bonds.
high
specific
surface
areas
small
these
provide
larger
number
thus
facilitate
Mechanistic
aspects
cross-coupling
discussed
context
structure–reactivity
relationship.
Язык: Английский