601
Mesoporous xerogel support CaO-Al 2 O 3 with Co-based catalyst was used in SRE
by Han et al. [81]. They investigated with different Ca/Al molar ratio and measured
the catalyst activity at 450 °C. They concluded that Ca/Al molar ratio (0.5) gave
maximum ethanol conversion (100%) and hydrogen (74.6%) yield. The variation of
basicity of different catalysts for the variation of Ca/Al molar ratio was the key factor of all catalyst’s activity. Ni-Al 2 O 3 -ZrO 2 xerogel catalyst with different Ni loading (5, 10, 15, 20 and 25) was synthesized and introduced for SRE by Han et al. [88,
91]. Among all catalysts studied, 15 wt% Ni exhibited maximum hydrogen yield.
The group reported that the catalyst showed promising stability over longer time on
stream (2100 min) at 500 °C (Fig. 3).
Different amounts of Cu loading (0, 0.1, 0.2, 0.3 and 1.0 wt%) with fixed Ni
(15 wt%) and Zr/Al molar ratio (0.2) catalysts were prepared by Han et al. [89] for
SRE. 0.2 wt% Cu-loaded catalyst gave a maximum hydrogen yield (86.6%) with
complete ethanol conversion at 450 °C. Han et al. [90] synthesized mesoporous
Ni-Al 2 O 3 -ZrO 2 xerogel catalysts with fixed Ni loading (15 wt%) and Zr/Al molar
ratio 0.2. They varied the P-123 concentration (0, 6, 12, 18 and 24 mM) during
synthesis of the catalysts. Twelve millimetre-concentrated P123-assisted Ni-Al 2 O 3 -
ZrO 2 catalyst produced the highest hydrogen yield (126%) with complete ethanol
conversion at 500 °C. So, P-123 concentration played an important role in catalyst
activity. Ni-Al 2 O 3 -ZrO 2 and Ni/Al 2 O 3 -ZrO 2 catalysts were developed by sol-gel and
incipient wet-impregnation method, and the catalysts activity for ethanol steam
Table 4 Activity in SRE of different mesoporous supported catalysts
Catalysts
Metals
(wt%)
Temperature
(°C)
C 2 H 5 OH
conversion (%)
H 2 selectivity/
yield (%)
References
MC-Ni-Co
–
375
10
30
[82]
MC-Ni-Co/Zr
Zr (2)
375
46
25
[82]
MC-Ni-Co/Y
Y (2)
375
51
38
[82]
NiOMC
Ni (9.2) 450
100
65
[84]
Ni/SBA-15
Ni (6)
550
100
80
[85]
Ni-Au/SBA-15
Ni (6)
Au (1.2)
550
100
82
[85]
Ni/MCM-41
Ni (10)
490
70
55
[86]
Co/MCM-41
Co (10) 490
62
25
[86]
Ni-Co/MCM-41
Ni (9)
Co (1)
490
90
80
[86]
Co/0.5CaO-Al 2 O 3 Co (15) 450
100
74.6
[81]
Ni-Al 2 O 3 -ZrO 2
Ni (15)
500
100
124.9
[88]
Cu-Ni-Al 2 O 3 -ZrO 2 Cu (0.2)
Ni (15)
450
100
86.6
[89]
P123
assisted-Ni-Al 2 O 3 -
ZrO 2
Ni (15)
500
100
126
[90]
Ni-Al 2 O 3 -ZrO 2
Ni (15)
500
100
128
[91]
Ni-Al 2 O 3 -ZrO 2
Ni (15)
500
100
115
[91]
Steam Reforming of Methanol, Ethanol and Glycerol over Catalysts with Mesoporous…
Mesoporous xerogel support CaO-Al 2 O 3 with Co-based catalyst was used in SRE
by Han et al. [81]. They investigated with different Ca/Al molar ratio and measured
the catalyst activity at 450 °C. They concluded that Ca/Al molar ratio (0.5) gave
maximum ethanol conversion (100%) and hydrogen (74.6%) yield. The variation of
basicity of different catalysts for the variation of Ca/Al molar ratio was the key factor of all catalyst’s activity. Ni-Al 2 O 3 -ZrO 2 xerogel catalyst with different Ni loading (5, 10, 15, 20 and 25) was synthesized and introduced for SRE by Han et al. [88,
91]. Among all catalysts studied, 15 wt% Ni exhibited maximum hydrogen yield.
The group reported that the catalyst showed promising stability over longer time on
stream (2100 min) at 500 °C (Fig. 3).
Different amounts of Cu loading (0, 0.1, 0.2, 0.3 and 1.0 wt%) with fixed Ni
(15 wt%) and Zr/Al molar ratio (0.2) catalysts were prepared by Han et al. [89] for
SRE. 0.2 wt% Cu-loaded catalyst gave a maximum hydrogen yield (86.6%) with
complete ethanol conversion at 450 °C. Han et al. [90] synthesized mesoporous
Ni-Al 2 O 3 -ZrO 2 xerogel catalysts with fixed Ni loading (15 wt%) and Zr/Al molar
ratio 0.2. They varied the P-123 concentration (0, 6, 12, 18 and 24 mM) during
synthesis of the catalysts. Twelve millimetre-concentrated P123-assisted Ni-Al 2 O 3 -
ZrO 2 catalyst produced the highest hydrogen yield (126%) with complete ethanol
conversion at 500 °C. So, P-123 concentration played an important role in catalyst
activity. Ni-Al 2 O 3 -ZrO 2 and Ni/Al 2 O 3 -ZrO 2 catalysts were developed by sol-gel and
incipient wet-impregnation method, and the catalysts activity for ethanol steam
Table 4 Activity in SRE of different mesoporous supported catalysts
Catalysts
Metals
(wt%)
Temperature
(°C)
C 2 H 5 OH
conversion (%)
H 2 selectivity/
yield (%)
References
MC-Ni-Co
–
375
10
30
[82]
MC-Ni-Co/Zr
Zr (2)
375
46
25
[82]
MC-Ni-Co/Y
Y (2)
375
51
38
[82]
NiOMC
Ni (9.2) 450
100
65
[84]
Ni/SBA-15
Ni (6)
550
100
80
[85]
Ni-Au/SBA-15
Ni (6)
Au (1.2)
550
100
82
[85]
Ni/MCM-41
Ni (10)
490
70
55
[86]
Co/MCM-41
Co (10) 490
62
25
[86]
Ni-Co/MCM-41
Ni (9)
Co (1)
490
90
80
[86]
Co/0.5CaO-Al 2 O 3 Co (15) 450
100
74.6
[81]
Ni-Al 2 O 3 -ZrO 2
Ni (15)
500
100
124.9
[88]
Cu-Ni-Al 2 O 3 -ZrO 2 Cu (0.2)
Ni (15)
450
100
86.6
[89]
P123
assisted-Ni-Al 2 O 3 -
ZrO 2
Ni (15)
500
100
126
[90]
Ni-Al 2 O 3 -ZrO 2
Ni (15)
500
100
128
[91]
Ni-Al 2 O 3 -ZrO 2
Ni (15)
500
100
115
[91]
Steam Reforming of Methanol, Ethanol and Glycerol over Catalysts with Mesoporous…