Environmental Engineering Reference
In-Depth Information
synthesis usually exhibit an Anderson-Schulz-Flory (ASF) distribution. ASF distribution
is a mathematical form used to describe the logarithmically linear relationship between
the mole or weight fraction of observed hydrocarbons and their carbon numbers. The
respective Schultz expression and Flory expression are given as follows:
w
=
(
−
α
)
2
n
α
(
n
−
1
(Eq. 7.9)
n
(ln
2
n
(Eq. 7.10)
w
=
α )
n
α
n
Table 7.3
Summary of intermediates, end-products, and reaction rates for
dehalogenation of halogenated aliphatic compounds by bimetallic Pd/Fe nanoparticles.
Compounds
k
SA
(L/hrm
2
)
Products
Chlorinated Methanes
Carbon Tetrachloride
CHCl
3
(24%), CH
2
Cl
2
(25%), CH
4
(55%)
C
2
H
6
(3.3%)
0.009
Chloroform
CH
2
Cl
2
(12.6%), CH
4
(70%)
0.0065
Dichloromethane
No reaction
---
Halogenated Methanes
Bromoform
CH
3
Br (8.2%), CH
4
(71%), C
2
H
6
(11%)
0.079
Dibromomethane
CH
3
Br (6.2%), CH
4
(90%), C
2
H
6
(1%)
0.044
Dibromochloromethane
CH
3
Br (10%), CH
4
(75%), CH
3
Cl (5%)
C
2
H
6
(3%), CH
2
BrCl (1%)
0.056
Dichlorobromomethane
CH
2
Cl
2
(7%), CH
4
(63%), C
2
H
6
(4%),
CH
2
BrCl (2%)
---
Chlorinated Ethylenes
Tetrachloroethylene
C
2
HCl
3
(< 0.1%), C
2
H
6
(90%)
0.0122
Trichloroethylene
C
2
H
4
(5%), C
2
H
6
(95%)
0.0182
trans
-Dichloroethylene
C
2
H
4
(11.5%), C
2
H
6
(78%)
0.0151
cis
-Dichloroethylene
C
2
H
4
(11%), C
2
H
6
(81%)
0.0176
1,1-Dichloroethylene
C
2
H
4
(3%), C
2
H
6
(58%)
0.0115
Vinyl Chloride
C
2
H
6
(66.5%)
---
Chlorinated Ethanes
C
2
Cl
4
(7.5%), C
2
HCl
5
t
, 1,1,2,2-C
2
H
2
Cl
4
t
,
C
2
H
6
(87%), C
2
H
4
(5%)
Hexachloroethane
0.020
C
2
HCl
3
(14%),1,1,2,2-C
2
H
2
Cl
4
t
,
C
2
H
6
(60%), C
2
H
4
(14%)
Pentachloroethane
0.026
1,1,1,2-Tetrachloroethane
cis
-C
2
H
2
Cl
2
(15%), C
2
H
6
(73%),
C
2
H
4
(10%), n-Butane (6%)
0.021
1,1,2-C
2
H
3
Cl
3
t
, C
2
H
6
(65%)
1,1,2,2-Tetrachloroethane
0.0088
C
2
H
6
(60%), C
2
H
4
t
1,1,1-Trichloroethane
0.0054
t
trace amounts.
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