ChemSusChem,
Journal Year:
2024,
Volume and Issue:
17(20)
Published: May 3, 2024
Abstract
Recently,
many
studies
have
been
published
regarding
electrochemical
oxygen
reduction
reaction
for
generating
hydrogen
peroxide
(H
2
O
)
using
gas
diffusion
electrodes
(GDEs)
various
applications.
Sodium
salts
solved
in
deionized
water
were
usually
used
as
supporting
electrolytes.
In
technical
applications,
however,
tap
water‐based
electrolytes
with
hardeners
are
particularly
relevant
and
only
considered
a
few
to
date.
this
work,
we
investigated
the
influence
of
on
H
‐generation
at
150
mA
cm
−2
able
show
that
scaling
occurs
predominantly
GDE‐surface
not
its
pore
structure.
With
novel
method
synthesis
by
complexing
agents
bind
hardeners,
significantly
reduce
scaling.
Even
after
10
h
operation,
reactor
still
achieves
faradaic
efficiency
(FE)
above
70
%
(>67
mg
−1
),
comparable
experiments
without
electrolyte.
Furthermore,
demonstrate
electrochemically
converted
carbon‐based
GDE
behave
inertly.
If
cell
is
operated
rinsed
acidic
liquid
(anolyte)
between
batches,
can
be
completely
avoided.
Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(42), P. 18053 - 18066
Published: Oct. 11, 2024
This
study
integrates
macromixing
and
micromixing
methodologies
to
characterize
an
electrochemical
reactor
with
a
gas
diffusion
electrode
(GDE)
based
on
computational
fluid
dynamics
(CFD)
simulations
validated
by
residence
time
distribution
(RTD)
data.
It
experimentally
evaluates
two
types
of
GDEs
for
H2O2
accumulation
uses
the
CFD
model
evaluate
in
reactor.
The
tanks-in-series
(T-I-S)
provides
qualitative
understanding
fluid's
macroscopic
behavior,
while
transition
SST
analyzes
microscopic
turbulence
zones.
reveals
significant
convergence
current
density,
volumetric
flow
rate,
GDE
type
production.
optimal
experimental
configuration
(carbon/PTFE/fabric
Q
=
50
L
h–1)
was
evaluated
through
at
different
rates.
These
results
improve
our
hydrodynamics
offer
prospects
optimizing
generation
processes.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(13), P. 5160 - 5168
Published: March 20, 2024
Most
established
synthesis
routes
in
the
chemical
industry
are
based
on
high-energy-demanding
processes
and
rely
consumption
of
fossil
fuels.
Organic
peracids,
which
can
be
used
as
ecofriendly
highly
effective
disinfectants,
typically
synthesized
by
reaction
a
carboxylic
acid
hydrogen
peroxide
(H2O2),
electrochemically
with
renewable
electricity.
In
particular,
use
gas
diffusion
electrodes
open
new
field
for
indirect
on-demand
electrochemical
peracid
production.
this
paper,
implementation
an
in-cell
various
peracids
building
up
improved
performic
(PFA)
is
described.
H2O2
was
obtained
at
high
current
densities
100
mA
cm–2
directly
reacted
formate
catholyte
solution.
The
using
buffered
system
1
wt
%
H3PO4
ending
1.47
mol
L–1
0.24
PFA
efficiencies
37.5%
6.1%
after
24
h
electrosynthesis,
respectively.
Finally,
conditions
were
successfully
transferred,
demonstrating
first
comprehensive
approach
to
electrosynthesis
introducing
general
route.
