YUASA IONICS

Contents

BET

BJH

NLDFT

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0.1nm 1nm 10nm 100nm 1m 10m 100m 1mm

0.3 nm 2 nm

0.4 nm

3 nm 950 m

200 nm

1mm

200 nm

1 nm 100 m

100 m10 nm

500nm

2 mm70 m

Ni Au

(Wet)

MR

MR

(Dry)

200 nm

0.1nm 1nm 10nm 100nm 1m 10m 100m 1mm0.1nm 1nm 10nm 100nm 1m 10m 100m 1mm

0.3 nm 2 nm

0.4 nm

3 nm 950 m

200 nm

1mm

200 nm

1 nm 100 m

100 m10 nm

500nm

2 mm70 m

Ni Au

(Wet)

MR

MR

(Dry)

200 nm

YUASA IONICS

IUPAC

.

.

MSCACF

MCM-41FSM-16SBA-15

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IUPAC

w

d

closed pore

ink-bottle type pore

inter-connected pore

blind pore

pore

through pore

w

d >> w w d

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IUPACISO

BET N2Kr

Washburn Hg

BJHDFT N2

HKSFDFT N2ArCO2

Boyle He

3

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physisorption chemisorption

1

2

TTc

3

40 kJ/mol

50200 k/mol

4

5

6

7

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Autosorb-1

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Autosorb-1

Manifold

Turbo

Pump

Diaphragm

Pump

0-1000Torr

0-10Torr

0-1Torr

Pirani

Trap

Mantle Heater

P Po

LN2

LN2

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NOVA e

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NOVA e

0-1000Torr

Rotary

Pump

Manifold

Vent

P1 P2 P3 P4Mantle Heater

LN2

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Quadrasorb SI

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Quadrasorb SI

Rotary

Pump

Utility

Vent

LN2

M4M3M2M1

Turbo

Pump

0-1000Torr

0-10Torr

Turbo

Pump

Option

FloVac DegasserAutosorb DegasserMaster Prep

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Pump

L-R L-S

Vent

0-1000Torr

20MPa

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Monosorb

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Monosorb

DA

DB

Po

1

2

3

4

(25PSI)

DA

DB

Po

1

2

3

4

(25PSI)

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IUPAC

I IV

II V IV

III II

VI

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MCM-41 KHA-B916

2 2

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Langmuir

BET BETIUPAC

t-plot, s st-

DR

BJH, DH BJHIUPAC

MP t-plot

DA, HK, SF HK=SF=

NLDFT

MC

FHH, NK

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b) (P/P

0=0.3)

d) (P/P

0=0.995)

c) /P/P

0=0.7

a)

b) (P/P

0=0.3)

d) (P/P

0=0.995)

c) /P/P

0=0.7

a)

0

50

100

150

200

250

300

350

0.0 0.2 0.4 0.6 0.8 1.0

Relative Pressure (P/Po)

Volu

me (

cm

3-S

TP

/g)

Adsorption

Desorption

(20500)

(20)

(500)

c) BJH

b) BET

d)

a)

0

50

100

150

200

250

300

350

0.0 0.2 0.4 0.6 0.8 1.0

Relative Pressure (P/Po)

Volu

me (

cm

3-S

TP

/g)

Adsorption

Desorption

(20500)

(20500)

(20)

(20)

(500)

(500)

c) BJH

b) BET

d)

a)

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BET

CVPo

P

CV

C

PPoV mm

11

]1)/[(

1

P Po V PVm

C 0

BETP V

BET

CV

Cs

m

1

CVi

m

1

0.05P/Po0.35 P/Po0.1 = 0.9999 = 1/(VmC) 0

BET

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BET

BET

P/Po=0.050.35BET=510 m2/g

P/Po=0.010.1BET=630 m2/g

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Kelvin

t

rk

rm

)(2 trD k

Kelvin)/ln(

2

PoPRT

Vr mk

D

98.2)/(45.6)/(88.0 2 PoPPoP

21

034.0)/log(

99.13

PPode Boer

21

034.0)/log(

99.13

PPode Boer

31

)/log(303.2

554.3

PPoHalsey

31

)/log(303.2

554.3

PPoHalsey

Carbon Black

t []

t []

t []

N2

)/log(

148.4

PPork

N2

)/log(

148.4

PPork

DD

rk KelvinVm (=0)

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BJH

, t

2 r k

2 r

P/P0 r k [] t [] P/P0 r k [] t []

0.100 4.1 3.7 16 0.9720 336 17.4 700

0.188 5.7 4.3 20 0.9753 382 17.7 800

0.584 17.8 7.2 50 0.9782 433 17.9 900

0.787 39.9 10.1 100 0.9804 483 18.1 1000

0.896 87.0 13.1 200 0.9903 980 19.1 2000

0.9600 234 16.4 500 0.9936 1488 19.5 3000

0.9670 285 17.0 600 0.9950 1905 19.7 3850

P/Pode Boer

/

0.0

0.4

0.8

1.2

1.6

2.0

1.0E+01 1.0E+02 1.0E+03 1.0E+04

Pore Diameter()

(cc/g

)

0.0

2.0

4.0

6.0

8.0

10.0

Dv(log d

)

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w

Horvath-Kawazoe (HK) Method

Active Carbon, Clay

w

Saito-Foley (SF) Method

Zeolite, Silica gel, Nonotube

/electrostatic attraction / repulsion interaction

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P/P0 = 10-7 P/P0 = 10-7

P/P0 = 10-3P/P0 = 10-3 P/P0 = 10

-2P/P0 = 10-2

P/P0 = 10-4P/P0 = 10-4

P/P0 = 10-5

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SF(Saito-Foley) / SFHK SF

10

P/P0=10-7.

SF

10 or .

SF

10 or .

SF Dv(d )

.

SF Dv(d )

.

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NLDFT

BJH Kelvin2 nm

MP 0.7 nm

HK 0.7 nm

SF 0.7 nm

DFT /

NLDFTN2 Ar CO2

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DFT

DFT NLDFT

)]r()[r(r)]r([)]r([ extUdF

wallspore theby imposed Potential:(r)

density fluid Local:(r)

energy free Helmholtzr

functional potential Grandr

extU

F

:)]([

:)]([

Ref.) Ravikovitch,P.I, Langmuir, 11, 4765 (1995)

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NLDFTBJH

0.00

0.05

0.10

0.15

0.20

0.25

1 10 100

[nm]

dV

/dD

BJH

NLDFT

0.0

0.5

1.0

1.5

2.0

1 10 100

[nm]

[cc/g

]

BJH

NLDFT

BJHXRDTEM

MCM-41

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NLDFT

Ref.) Alexander V. Neimark, New method for zeolites characterization,

TRI/Prinston release, 02/05/2001

87KArMCM-41ZSM-5

50-50%

ZSM-5&MCM-4150-50%

YUASA IONICS

NLDFTNLDFT method Pore size range

(Diameter)

N2-silica at 77K based on a cylindrical pore model 0.35 80 nm

Ar-zeolite/silica at 87K based on a cylindrical pore model 0.35 80 nm

Ar-zeolite/silica at 87K based on a sphrical/cylindrical pore model 0.35 80 nm

N2-carbon at 77K based on a slit pore model 0.35 30 nm

N2-carbon at 77K based on a cylinderical pore model 0.35 30 nm

Ar-carbon at 77K based on a slit pore model 0.35 30 nm

CO2-carbon at 273K based on a slit pore model 0.35 1.5 nm

NLDFT

2 nm XRDTEM