Industrial & Engineering Chemistry Research,
Год журнала:
2023,
Номер
62(37), С. 15084 - 15097
Опубликована: Сен. 10, 2023
This
study
focuses
on
the
development
and
application
of
an
electrochemical
flow
reactor
(EFR)
based
a
gas
diffusion
electrode
(GDE)
for
in
situ
hydrogen
peroxide
production
via
oxygen
reduction
reaction.
Existing
literature
lacks
comprehensive
investigations
into
GDE-based
EFR
hydrodynamics
their
correlation
with
effects.
To
help
fill
this
gap
literature,
response
surface
methodology
(RSM)
was
employed
present
order
to
analyze
hydrodynamic
behavior
EFR.
The
used
rate
interelectrode
as
RSM
variables
analysis
behavior.
Residence
time
distribution
(RTD)
assess
hydraulic
effects,
results
were
compared
H2O2
kinetics,
where
relevant
insights
obtained
relative
effects
system.
findings
point
importance
residence
its
impact
production.
Through
analysis,
conditions
(energy
consumption,
applied
current,
efficiency)
evaluated
using
such
current
density,
O2
rate,
conductivity.
resulting
regression
equation
accurately
predicted
cost,
which
found
align
well
experimental
results.
single-pass
system
common
recirculating
EFRs,
former
exhibited
32.4%
increase
electrogeneration
efficiency
latter.
In
summary,
provides
valuable
through
RSM-based
modulation
operating
conditions.
scaling
technology
improvement
efficiency.
Energy & Fuels,
Год журнала:
2023,
Номер
37(23), С. 17915 - 17931
Опубликована: Окт. 4, 2023
Hydrogen
production
from
electrochemical
water
splitting
has
attracted
great
attention
due
to
its
supply
green
energy.
However,
commercial
alkaline
electrolysis
is
energy
intensive
inert
and
large
overpotentials
of
anodic
oxygen
evolution
reaction
(OER).
Electro-oxidation
organics
an
attractive
alternative
the
OER.
With
electro-oxidation
special
organic
substrates
on
active
anode,
decreased
cell
voltage
H2
can
be
achieved
along
with
value-added
products.
In
this
review,
we
summarize
latest
progress
coupled
systems.
Different
compounds
containing
(alcoholic
hydroxyl,
aldehydes,
ketone),
nitrogen,
sulfides,
olefin/alkane
groups
have
been
selectively
oxidized
into
high
products
anodes,
thereby
promoting
cathodes.
Some
complicated
coupling
reactions,
such
as
formation
C–C
C–N,
are
also
introduced
in
addition,
challenges
prospects
for
future
development
research
field
highlighted.
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,
Год журнала:
2023,
Номер
62(37), С. 15084 - 15097
Опубликована: Сен. 10, 2023
This
study
focuses
on
the
development
and
application
of
an
electrochemical
flow
reactor
(EFR)
based
a
gas
diffusion
electrode
(GDE)
for
in
situ
hydrogen
peroxide
production
via
oxygen
reduction
reaction.
Existing
literature
lacks
comprehensive
investigations
into
GDE-based
EFR
hydrodynamics
their
correlation
with
effects.
To
help
fill
this
gap
literature,
response
surface
methodology
(RSM)
was
employed
present
order
to
analyze
hydrodynamic
behavior
EFR.
The
used
rate
interelectrode
as
RSM
variables
analysis
behavior.
Residence
time
distribution
(RTD)
assess
hydraulic
effects,
results
were
compared
H2O2
kinetics,
where
relevant
insights
obtained
relative
effects
system.
findings
point
importance
residence
its
impact
production.
Through
analysis,
conditions
(energy
consumption,
applied
current,
efficiency)
evaluated
using
such
current
density,
O2
rate,
conductivity.
resulting
regression
equation
accurately
predicted
cost,
which
found
align
well
experimental
results.
single-pass
system
common
recirculating
EFRs,
former
exhibited
32.4%
increase
electrogeneration
efficiency
latter.
In
summary,
provides
valuable
through
RSM-based
modulation
operating
conditions.
scaling
technology
improvement
efficiency.
