Biomedical Engineering Reference
In-Depth Information
Table 2.2
TPD data on single-walled carbon nanotube samples
TPD peak A
TPD peak B
Parameter
[70], Fig. 10
[26], Fig. 9a,
curve 3
[70], Fig. 10
[26], Fig. 9
des
,
kJ mol
-1
(H
E
19.2
± 1.2
20
Equations
(27)-(31)
20
Equation (24)
19.6
Equation
(24)
a
)
(
, Table
1) Equation
(24)
≈
Q
2
t
± 0.2
2.5 × 10
6
Equation
(24)
5.7 × 10
2
Equation (24)
1.8 × 10
2
Equation
(24)
K
,
s
-1
(1
) ×
0
10
9
Equation
(24)
L
,
0.015
Equations
(22), (23),
(25)
0.3
Equations
(22), (23),
(25)
80
Equations
(22), (23),
(25)
40-70
Equations
(22), (23),
(25)
m
m
D
),
cm
2
s
-1
(
T
4 × 10
-7
(100 K)
Equation
(25)
5 × 10
-7
(148 K)
Equation
(25)
∼
D
)
Equation (25)
(
T
∼
D
)
Equation
(25)
(
T
m
1
m
1
m
1 × 10
-13
(100 K)
Table 1
2.6 × 10
-10
(148 K)
Table 1
D
),
cm
2
s
-1
(
T
—
—
1
m
D
s
),
cm
2
s
-1
(
T
4 × 10
-7
(100 K)
2 × 10
-5
(148 K)
—
—
m
D
s
≈
(npn
7 × 10
-2
cm
2
0
s
-1
n
Q
s
≈
10 kJ mol
-1
(H
),
2
Table 1)
ads
D
H
—
—
—
—
—
—
∼ D
H
(13)I
D
S
ads
∼ D
S
(13)I
Equations
(14), (15)
for process I,
Table 1
X
= H
/C
X
≥
X
X
≥
X
X
≤
X
X
≤
X
2
A
B
A
B
B
A
B
A
X
= (H
/C)
m
2
m
-
-
-
-
*
The experimental absolute values [26] of hydrogen sorption corresponding to peaks A and B,
including the maximum values for peak B (about 5-10 wt%, i.e., about 0.3-0.7), are obviously
overvalued (systematic error) by apparently a factor 10.
