Nature Chemical Engineering,
Journal Year:
2024,
Volume and Issue:
1(3), P. 208 - 215
Published: March 5, 2024
Water
plays
a
pivotal
role
in
direct
air
capture
technologies,
impacting
materials,
regeneration
processes
and
product
streams.
CO2
removal
methods,
including
absorption,
adsorption
electrochemical
techniques,
encounter
challenges
associated
with
water,
thus
reducing
their
efficacy.
fluxes
into
out
of
aqueous
solvents
affect
the
concentration
overall
performance.
Solid
adsorbents
co-adsorb
water
greater
quantities
than
will
require
effective
strategies
to
address
substantial
energy
penalty
desorption
each
cycle.
Water-management
are
imperative
for
economic
viability
minimizing
environmental
impact,
but
high
intensity
necessitates
heat
recovery
techniques.
Feed
dehydration
can
be
combined
strategic
integration
process
streams
standard
techniques
front-end
management.
For
back-end
approaches,
mechanical
vapor
compression
is
viable
solution
coupling
management,
we
highlight
potential
benefits
three
implementation
methods.
Further
research
variable
climate
conditions
quality
impacts
essential
success
technologies.
management
crucial
enhancing
impact
(DAC)
This
Perspective
discusses
several
DAC
processes.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(21)
Published: March 25, 2024
Abstract
Herein,
a
robust
microporous
aluminum
tetracarboxylate
framework,
MIL‐120(Al)‐AP,
(MIL,
AP:
Institute
Lavoisier
and
Ambient
Pressure
synthesis,
respectively)
is
reported,
which
exhibits
high
CO
2
uptake
(1.9
mmol
g
−1
at
0.1
bar,
298
K).
In
situ
Synchrotron
X‐ray
diffraction
measurements
together
with
Monte
Carlo
simulations
reveal
that
this
structure
offers
favorable
capture
configuration
the
pores
being
decorated
density
of
µ
‐OH
groups
accessible
aromatic
rings.
Meanwhile,
based
on
calculations
experimental
evidence,
moderate
host‐guest
interactions
Q
st
(CO
)
value
MIL‐120(Al)‐AP
(−40
kJ
mol
deduced,
suggesting
relatively
low
energy
penalty
for
full
regeneration.
Moreover,
an
environmentally
friendly
ambient
pressure
green
route,
relying
inexpensive
raw
materials,
developed
to
prepare
kilogram
scale
yield
while
Metal‐
Organic
Framework
(MOF)
further
shaped
inorganic
binders
as
millimeter‐sized
mechanically
stable
beads.
First
evidences
its
efficient
/N
separation
ability
are
validated
by
breakthrough
experiments
operando
IR
indicate
kinetically
adsorption
over
water.
Finally,
techno‐economic
analysis
gives
estimated
production
cost
≈
13
$
kg
,
significantly
lower
than
other
benchmark
MOFs.
These
advancements
make
excellent
candidate
adsorbent
industrial‐scale
processes.
Nature Chemical Engineering,
Journal Year:
2024,
Volume and Issue:
1(3), P. 208 - 215
Published: March 5, 2024
Water
plays
a
pivotal
role
in
direct
air
capture
technologies,
impacting
materials,
regeneration
processes
and
product
streams.
CO2
removal
methods,
including
absorption,
adsorption
electrochemical
techniques,
encounter
challenges
associated
with
water,
thus
reducing
their
efficacy.
fluxes
into
out
of
aqueous
solvents
affect
the
concentration
overall
performance.
Solid
adsorbents
co-adsorb
water
greater
quantities
than
will
require
effective
strategies
to
address
substantial
energy
penalty
desorption
each
cycle.
Water-management
are
imperative
for
economic
viability
minimizing
environmental
impact,
but
high
intensity
necessitates
heat
recovery
techniques.
Feed
dehydration
can
be
combined
strategic
integration
process
streams
standard
techniques
front-end
management.
For
back-end
approaches,
mechanical
vapor
compression
is
viable
solution
coupling
management,
we
highlight
potential
benefits
three
implementation
methods.
Further
research
variable
climate
conditions
quality
impacts
essential
success
technologies.
management
crucial
enhancing
impact
(DAC)
This
Perspective
discusses
several
DAC
processes.
