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Table 1. Effects of catalysts on methane conversion and products selectivity
H2
C2H2
C2H6
C3H8
C4
1 2 3 1 2
CH4 conv. (%) 7.51 18.05 21.11 8.69 14.23
34.52 23.99 34.63 39.69 27.19
5.13 7.73 6.93 7.62 9.82
35.73 33.83 35.37 26.31 38.64
11.73 17.59 19.59 15.85 15.78
4.81 9.73 0.00 5.74 0.00
3 1 2 3 1
20.16 5.93 12.11 25.10 6.79
41.51 24.74 34.39 34.13 25.63
6.80 0.00 11.40 9.77 5.98
40.06 58.70 44.79 41.33 27.46
18.05 10.26 16.53 19.74 13.65
0.00 0.00 0.00 11.85 1.25
2
19.09
21.52
6.26
29.32
11.58
0.00
3 1
24.92 9.91
28.93 35.79
6.50 4.83
28.00 47.80
12.10 20.34
0.00 0.00
2 3
13.57 21.06
41.05 38.67
3.15 4.95
50.68 42.96
20.38 17.50
0.00 4.53
1 2 3 1 2 3 1 2
8.25 17.56 27.01 8.45 15.64 20.98 10.36 15.24
33.53 35.12 32.92 37.14 30.49 38.89 29.94 30.26
2.14 1.58 0.00 6.12 5.46 5.23 12.42 10.26
45.68 48.95 44.87 38.56 32.87 27.97 39.54 36.45
10.65 14.65 16.36 10.46 13.65 14.02 0.00 5.62
0.00 2.63 5.51 4.32 0.00 5.31 0.00 4.16
3
35.63
39.16
7.36
32.24
8.70
8.70
1
9.54
34.34
14.89
30.35
18.28
0.00
2
15.63
30.25
8.63
29.63
11.25
2.36
3 1 2 3 1 2 3 1
38.20 7.56 13.29 18.54 8.52 15.20 22.01 8.89
40.70 29.85 30.88 42.90 30.25 38.87 34.32 47.10
6.06 10.56 10.03 10.73 2.39 6.26 10.23 9.57
31.31 38.96 36.37 40.57 60.35 53.25 58.43 37.89
14.09 8.97 7.67 9.83 9.57 19.53 7.70 4.97
8.21 0.00 0.00 5.74 1.23 11.11 0.00 0.00
2
15.67
30.03
13.83
36.59
1.37
1.94
3 1 2 3 1 2 3
20.93 7.65 11.67 20.16 6.56 16.28 21.84 6.22 14.33 22.89
35.74 38.10 33.22 31.04 49.33 46.45 11.84 35.57 40.50 38.95
8.04 4.91 1.20 5.44 6.28 13.23 15.50 8.04 8.09 12.92
34.60 50.52 45.58 46.05 39.47 36.92 38.71 35.94 31.61 42.10
6.64 10.56 6.52 4.23 5.12 4.63 3.65 2.15 5.63 3.11
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
1
catalyst
run
empty
Al2O3
3% Fe/ Al2O3
3% Cu/ Al2O3
1% Pt/ Al2O3
3% Pt/ Al2O3
3% Ni/ Al2O3
5% Mn/ Al2O3
3% Ru/ Al2O3
zeolite
3% Fe/ zeolite
3% Cu/ zeolite
3% Pt/ zeolite
3% Ni/ zeolite
3% Ru/ zeolite
1 2 3
selectivity (%)
Note: 1Run 1 is flow rate: 30 ml/min, power: 35 W; run 2 is flow rate: 30 ml/min, power: 50 W; run 3 is flow rate: 15 ml/min, power 50 W.
H2
C2H2
C2H6
C3H8
C4
1 2 3 1 2
CH4 conv. (%) 7.51 18.05 21.11 8.69 14.23
34.52 23.99 34.63 39.69 27.19
5.13 7.73 6.93 7.62 9.82
35.73 33.83 35.37 26.31 38.64
11.73 17.59 19.59 15.85 15.78
4.81 9.73 0.00 5.74 0.00
3 1 2 3 1
20.16 5.93 12.11 25.10 6.79
41.51 24.74 34.39 34.13 25.63
6.80 0.00 11.40 9.77 5.98
40.06 58.70 44.79 41.33 27.46
18.05 10.26 16.53 19.74 13.65
0.00 0.00 0.00 11.85 1.25
2
19.09
21.52
6.26
29.32
11.58
0.00
3 1
24.92 9.91
28.93 35.79
6.50 4.83
28.00 47.80
12.10 20.34
0.00 0.00
2 3
13.57 21.06
41.05 38.67
3.15 4.95
50.68 42.96
20.38 17.50
0.00 4.53
1 2 3 1 2 3 1 2
8.25 17.56 27.01 8.45 15.64 20.98 10.36 15.24
33.53 35.12 32.92 37.14 30.49 38.89 29.94 30.26
2.14 1.58 0.00 6.12 5.46 5.23 12.42 10.26
45.68 48.95 44.87 38.56 32.87 27.97 39.54 36.45
10.65 14.65 16.36 10.46 13.65 14.02 0.00 5.62
0.00 2.63 5.51 4.32 0.00 5.31 0.00 4.16
3
35.63
39.16
7.36
32.24
8.70
8.70
1
9.54
34.34
14.89
30.35
18.28
0.00
2
15.63
30.25
8.63
29.63
11.25
2.36
3 1 2 3 1 2 3 1
38.20 7.56 13.29 18.54 8.52 15.20 22.01 8.89
40.70 29.85 30.88 42.90 30.25 38.87 34.32 47.10
6.06 10.56 10.03 10.73 2.39 6.26 10.23 9.57
31.31 38.96 36.37 40.57 60.35 53.25 58.43 37.89
14.09 8.97 7.67 9.83 9.57 19.53 7.70 4.97
8.21 0.00 0.00 5.74 1.23 11.11 0.00 0.00
2
15.67
30.03
13.83
36.59
1.37
1.94
3 1 2 3 1 2 3
20.93 7.65 11.67 20.16 6.56 16.28 21.84 6.22 14.33 22.89
35.74 38.10 33.22 31.04 49.33 46.45 11.84 35.57 40.50 38.95
8.04 4.91 1.20 5.44 6.28 13.23 15.50 8.04 8.09 12.92
34.60 50.52 45.58 46.05 39.47 36.92 38.71 35.94 31.61 42.10
6.64 10.56 6.52 4.23 5.12 4.63 3.65 2.15 5.63 3.11
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
1
catalyst
run
empty
Al2O3
3% Fe/ Al2O3
3% Cu/ Al2O3
1% Pt/ Al2O3
3% Pt/ Al2O3
3% Ni/ Al2O3
5% Mn/ Al2O3
3% Ru/ Al2O3
zeolite
3% Fe/ zeolite
3% Cu/ zeolite
3% Pt/ zeolite
3% Ni/ zeolite
3% Ru/ zeolite
1 2 3
selectivity (%)
Note: 1Run 1 is flow rate: 30 ml/min, power: 35 W; run 2 is flow rate: 30 ml/min, power: 50 W; run 3 is flow rate: 15 ml/min, power 50 W.
