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Abstract:
Characterization
of
the
interaction
of
water
with
the
highly ordered mesoporous
solid MCM-41
(pore
diameter
-2.5
nm)
is
undertaken
with
the
aid
of
several techniques
(adsorption
gravimetry,
X-ray
diffraction,
Fourier
transform infrared
spectroscopy,
and
controlled rate-evolved
gas
analysis).
The
relatively
complex
water-MCM-41
interactions
are
characterized by
a
type
V
isotherm indicating
an
initial repulsive
character
followed
by
a
capillary condensation
step
of
the
adsorbate.
This
highlights
both
hydrophobic
and
hydrophilic
properties
of
this
potential
model mesoporous adsorbent.
