600
The activity of different Ni-Co-MC catalysts with promoters (Zr and Y) was
studied at 375 °C by Gharahshiran et al. [82]. The highest ethanol conversion and
hydrogen selectivity were achieved for yttria-promoted catalyst. The smaller crystallite size and dispersion on support played an important role to increase the catalytic activity. Nickel embedded on mesoporous carbon (NiOMC) catalyst showed
good catalytic activity and stability for a longer period at 450 °C. Hydrogen selectivity of 65% and 100% ethanol conversion were obtained with this catalyst [84]. He
et al. [85] studied Ni/SBA-15 and Ni-Au/SBA-15 catalysts for ethanol steam
reforming. They found that both the catalysts showed promising catalytic activity at
temperature 550 °C. However, Au-promoted catalyst gave better results compared
to the unpromoted catalyst. Activities of mesoporous silica (MCM-41)-supported
monometallic (Ni, Co) and bimetallic (Ni-Co) catalysts were investigated in the
temperature range of 420–500 °C by Nejat et al. [86]. The catalysts showed the
highest activity at 490 °C. The bimetallic catalyst was more promising for SRE
reaction. They observed that the increase of Ni amount with the decrease of Co
amount in bimetallic catalyst increased ethanol conversion and yield of hydrogen.
Table 3 N 2 adsorption-desorption data of different mesoporous supported catalysts
Catalysts
Metals
(wt%)
BET surface
area (m
2
/g)
Average pore
diameter (nm)
Pore volume
(cc/g)
References
MC-Ni-Co
–
229
8.12
0.52
[82]
MC-Ni-Co/Zr Zr (2)
480
5.91
0.524
[82]
MC-Ni-Co/Y
Y (2)
296
5.29
0.39
[82]
Ni/SBA-15
Ni (10)
403.4
16.4
1.34
[83]
Ni-La/SBA-15 Ni (10)
La (5)
388.6
15.3
1.301
[83]
Ni-La-Ce/
SBA-15
Ni (10)
La (5)
Ce (5)
394.7
15
1.310
[83]
NiOMC
Ni (9.2)
156
3.5
0.73
[84]
SBA-15
–
657
5.5
0.56
[85]
Ni/SBA-15
Ni (6)
298
4.5
0.44
[85]
Ni-Au/SBA-15 Ni (6)
Au (1.2)
398
4.8
0.55
[85]
MCM-41
–
1176
2.42
0.9401
[86]
Ni/MCM-41
Ni (10)
496.2
1.86
0.6416
[86]
Co/MCM-41
Co (10)
427.9
1.67
0.5986
[86]
Ni-Co/
MCM-41
Ni (9)
Co (1)
481.7
1.95
0.6516
[86]
Zr-SBA-15
–
670
6.6
1.3
[87]
Ni/Zr-SBA-15 Ni (6)
515
5.7
1.1
[87]
Zr-MCM-41
–
595
3.4
1.1
[87]
Ni/Zr-MCM-41 Ni (6)
338
3.4
0.7
[87]
Co/0.5CaOAl 2 O 3
Co (15)
155
13.5
0.52
[81]
S. Bepari et al.
The activity of different Ni-Co-MC catalysts with promoters (Zr and Y) was
studied at 375 °C by Gharahshiran et al. [82]. The highest ethanol conversion and
hydrogen selectivity were achieved for yttria-promoted catalyst. The smaller crystallite size and dispersion on support played an important role to increase the catalytic activity. Nickel embedded on mesoporous carbon (NiOMC) catalyst showed
good catalytic activity and stability for a longer period at 450 °C. Hydrogen selectivity of 65% and 100% ethanol conversion were obtained with this catalyst [84]. He
et al. [85] studied Ni/SBA-15 and Ni-Au/SBA-15 catalysts for ethanol steam
reforming. They found that both the catalysts showed promising catalytic activity at
temperature 550 °C. However, Au-promoted catalyst gave better results compared
to the unpromoted catalyst. Activities of mesoporous silica (MCM-41)-supported
monometallic (Ni, Co) and bimetallic (Ni-Co) catalysts were investigated in the
temperature range of 420–500 °C by Nejat et al. [86]. The catalysts showed the
highest activity at 490 °C. The bimetallic catalyst was more promising for SRE
reaction. They observed that the increase of Ni amount with the decrease of Co
amount in bimetallic catalyst increased ethanol conversion and yield of hydrogen.
Table 3 N 2 adsorption-desorption data of different mesoporous supported catalysts
Catalysts
Metals
(wt%)
BET surface
area (m
2
/g)
Average pore
diameter (nm)
Pore volume
(cc/g)
References
MC-Ni-Co
–
229
8.12
0.52
[82]
MC-Ni-Co/Zr Zr (2)
480
5.91
0.524
[82]
MC-Ni-Co/Y
Y (2)
296
5.29
0.39
[82]
Ni/SBA-15
Ni (10)
403.4
16.4
1.34
[83]
Ni-La/SBA-15 Ni (10)
La (5)
388.6
15.3
1.301
[83]
Ni-La-Ce/
SBA-15
Ni (10)
La (5)
Ce (5)
394.7
15
1.310
[83]
NiOMC
Ni (9.2)
156
3.5
0.73
[84]
SBA-15
–
657
5.5
0.56
[85]
Ni/SBA-15
Ni (6)
298
4.5
0.44
[85]
Ni-Au/SBA-15 Ni (6)
Au (1.2)
398
4.8
0.55
[85]
MCM-41
–
1176
2.42
0.9401
[86]
Ni/MCM-41
Ni (10)
496.2
1.86
0.6416
[86]
Co/MCM-41
Co (10)
427.9
1.67
0.5986
[86]
Ni-Co/
MCM-41
Ni (9)
Co (1)
481.7
1.95
0.6516
[86]
Zr-SBA-15
–
670
6.6
1.3
[87]
Ni/Zr-SBA-15 Ni (6)
515
5.7
1.1
[87]
Zr-MCM-41
–
595
3.4
1.1
[87]
Ni/Zr-MCM-41 Ni (6)
338
3.4
0.7
[87]
Co/0.5CaOAl 2 O 3
Co (15)
155
13.5
0.52
[81]
S. Bepari et al.