Tel: 01763 262333
Porosimetry by Gas Adsorption
Mesopore and Macropore Size, Volume & Area Measurement
The
porous
nature
of
materials
affects
a
wide
variety
of
performance
aspects
in
many
applications,
such
as
adsorption
capacity,
chemical
reactivity,
electrochemical
activity,
structural
properties
and
dissolution
rates.
Understanding
the
components
of
porosity:
pore
volume,
pore
size
and
pore
area,
is,
therefore,
critical
to
many
sectors,
for
example
catalysis,
adsorption
technology,
pharmaceuticals,
energy
generation
and
green
technology.
The
porous
nature
of
materials
includes
the
description
of
several
characteristics
covering
a
wide
range
of
pore
sizes
and
geometries
and
our
porosimetry
page
gives
more
details
of
this.
Mesopores
and
small
macropores
are
conveniently
studied
by
the
analytical
technique
of
gas
adsorption. This can be extended to include dedicated micropore analysis which is discussed on our Micropore Analysis pages.
Gas
adsorption
provides
pore
volume,
area
and
size
data
in
the
typical
pore
size
range
2
–
300
nm,
although
the
upper
limit
depends
on
the
nature
of
the
sample.
The
latest,
powerful
and
adaptable
instrumentation
combined
with
our
decades
of
experience
means
that
we
can
recommend
the
most
suitable
analytical
options
for
your
samples.
Analyses
and
reporting
options
can
be
tailored
to
provide
the
most
pertinent
information
to
describe
your
particular
samples
and
specific
application.
We
are
also
happy
to
assist
with
data
interpretation
to
ensure
that
you
obtain the most relevant data and information.
Key Applications
Adsorption capacity and efficacy of adsorbates and filter media
Activity of catalysts and catalytic processes
Assessment of new, spent and regenerated catalysts
Assessment of new, spent and regenerated and filter media
Electrochemical activity of battery components and constituents
Fabrication process development and control
Availability of biologically available sites in pharmaceuticals
Inorganics, aluminas and silicas: material assessment
Behaviour of powder materials for pastes and emulsions
Raw material selection and QC process
Dissolution and dispersion assessment and control
Rapid assessment of microporous materials
Analytical Options and Highlights
Pore volume, area and size distributions
Numerically and graphical representations
Full gas adsorption and desorption isotherm measurement
Determination of pore geometry
BET Specific Surface Area included
Assessment of microporosity via t-plot analysis
Extensive and flexible analytical and reporting options
Extensive and flexible sample degassing options
Availability of alternative adsorbents: argon and carbon dioxide
Comprehensive range of data reduction options
BET Surface Area
BJH Mesopore volume, area and size – adsorption isotherm
BJH Mesopore volume, area and size – desorption isotherm
t-plot and α-S plot methods
Langmuir Surface Area
Assessment of pore geometry from isotherm hysteresis
Combination with mercury porosimetry: pore size range to 650 µm
The
measurement
of
the
full
gas
adsorption
and
desorption
isotherm
provides
a
full
porosimetry
analysis
technique
for
the
determination
of
pore
volume,
pore
area
and
pore
size
in
the
pore
size
range
2
–
300
nm
diameter,
although
the
upper
range
does
depend
on
the
isotherm
profile
as
dictated
by
the
porous
nature
of
the
sample.
Nitrogen
is
an
ideal
adsorbate,
providing
full
characterisation
throughout
the
mesopore
range
and
into
the
small
macropore
region.
Calculation
of
BET
surface
area
is
included
and
the
assessment
of
the
extent
and
volume
of
microporosity
can
also
be
included
through
specifically
tailored
analytical
conditions.
It
is,
therefore,
a
convenient
and
cost
effective
screening
technique
for
the
evaluation of microporous materials. More extensive micropore analysis is offered via our other dedicated gas adsorption options.
At
MCA
Services
sample
analysis
is
undertaken
using
our
Micromeritics
TriStar
3030
plus
instrument,
which
utilises
the
volumetric
method
of
gas
adsorption.
Before
analysis
it
is
essential
that
samples
are
fully
dried
and
degassed
as
extraneous
substances
will
provide
an
artificially
low
surface
area
value.
We
have
a
comprehensive
range
of
degassing
options,
capable
of
temperatures
in
the
range
ambient
to
400
°C
under
dynamic
vacuum
or
flowing
inert
gas.
We
can,
therefore,
prepare
virtually
any
sample
material
on-site
immediately
prior
to
analysis,
which
ensures the most accurate and reliable measurements are obtained.
At
MCA
Services
we
have
decades
of
experience
in
the
analysis
and
characterisation
of
materials
and
are
always
happy
to
discuss
specific
samples
and
applications.
Our
expertise
ensures
that
the
most
appropriate
analytical
test,
or
combination
of
tests,
are
selected
for
your
particular
sample,
application
and
requirements.
We
also
provide
assistance
with
the
interpretation
of
results
and
more
information
about
these
analytical
options and the background operation and theory can be found on our YouTube channel.
MCA Services
01763 262333
Analytical Options and Highlights
Pore volume, area and size distributions
Numerical and graphical representations
Full gas adsorption and desorption isotherm measurement
Determination of pore geometry
BET Specific Surface Area included
Assessment of microporosity via t-plot analysis
Extensive and flexible analytical and reporting options
Extensive and flexible sample degassing options
Alternative adsorbents: argon and carbon dioxide
Comprehensive range of data reduction options
BET Surface Area
BJH Mesopore volume, area and size
Adsorption and desorption isotherm data
t-plot and α-S plot methods
Langmuir Surface Area
Assessment of pore geometry from isotherm hysteresis
Combination with mercury porosimetry: pore sizes of 650 µm
The
measurement
of
the
full
gas
adsorption
and
desorption
isotherm
provides
a
full
porosimetry
analysis
technique
for
the
determination
of
pore
volume,
pore
area
and
pore
size
in
the
pore
size
range
2
–
300
nm
diameter,
although
the
upper
range
does
depend
on
the
isotherm
profile
as
dictated
by
the
porous
nature
of
the
sample.
Nitrogen
is
an
ideal
adsorbate,
providing
full
characterisation
throughout
the
mesopore
range
and
into
the
small
macropore
region.
Calculation
of
BET
surface
area
is
included
and
the
assessment
of
the
extent
and
volume
of
microporosity
can
also
be
included
through
specifically
tailored
analytical
conditions.
It
is,
therefore,
a
convenient
and
cost
effective
screening
technique
for
the
evaluation
of
microporous
materials.
More
extensive
micropore
analysis
is
offered
via
our
other dedicated gas adsorption options.
Porosimetry by Gas Adsorption
Mesopore and Macropore Size, Volume & Area Measurement
The
porous
nature
of
materials
affects
a
wide
variety
of
performance
aspects
in
many
applications,
such
as
adsorption
capacity,
chemical
reactivity,
electrochemical
activity,
structural
properties
and
dissolution
rates.
Understanding
the
components
of
porosity:
pore
volume,
pore
size
and
pore
area,
is,
therefore,
critical
to
many
sectors,
for
example
catalysis,
adsorption
technology,
pharmaceuticals,
energy
generation
and
green
technology.
The
porous
nature
of
materials
includes
the
description
of
several
characteristics
covering
a
wide
range
of
pore
sizes
and
geometries
and
our
porosimetry
page
gives
more
details
of
this.
Mesopores
and
small
macropores
are
conveniently
studied
by
the
analytical
technique
of
gas
adsorption.
This
can
be
extended
to
include
dedicated
micropore
analysis
which
is
discussed
on
our
Micropore Analysis pages.
Gas
adsorption
provides
pore
volume,
area
and
size
data
in
the
typical
pore
size
range
2
–
300
nm,
although
the
upper
limit
depends
on
the
nature
of
the
sample.
The
latest,
powerful
and
adaptable
instrumentation
combined
with
our
decades
of
experience
means
that
we
can
recommend
the
most
suitable
analytical
options
for
your
samples.
Analyses
and
reporting
options
can
be
tailored
to
provide
the
most
pertinent
information
to
describe
your
particular
samples
and
specific
application.
We
are
also
happy
to
assist
with
data
interpretation
to
ensure
that
you obtain the most relevant data and information.
Key Applications
Adsorption capacity and efficacy of adsorbates
Adsorption capacity and efficacy of filter media
Activity of catalysts and catalytic processes
Assessment of new, spent and regenerated catalysts
Electrochemical activity of battery components
Fabrication process development and control
Availability of biologically active sites in pharmaceuticals
Inorganics, aluminas and silicas
Behaviour of powder materials for pastes and emulsions
Raw material selection and QC process
Dissolution and dispersion assessment and control
Rapid assessment of microporous materials
At
MCA
Services
sample
analysis
is
undertaken
using
our
Micromeritics
TriStar
3030
plus
instrument,
which
utilises
the
volumetric
method
of
gas
adsorption.
Before
analysis
it
is
essential
that
samples
are
fully
dried
and
degassed
as
extraneous
substances
will
provide
an
artificially
low
surface
area
value.
We
have
a
comprehensive
range
of
degassing
options,
capable
of
temperatures
in
the
range
ambient
to
400
°C
under
dynamic
vacuum
or
flowing
inert
gas.
We
can,
therefore,
prepare
virtually
any
sample
material
on-site
immediately
prior
to
analysis,
which
ensures
the
most
accurate
and
reliable
measurements are obtained.
At
MCA
Services
we
have
decades
of
experience
in
the
analysis
and
characterisation
of
materials
and
are
always
happy
to
discuss
specific
samples
and
applications.
Our
expertise
ensures
that
the
most
appropriate
analytical
test,
or
combination
of
tests,
are
selected
for
your
particular
sample,
application
and
requirements.
We
also
provide
assistance
with
the
interpretation
of
results
and
more
information
about
these
analytical
options
and
the
background
operation
and
theory
can
be
found
on
our
YouTube channel.
