Research Article
Hydrogen Production by Supercritical Water Gasification of Biomass with Homogeneous and Heterogeneous Catalyst
Table 4
Experimental results for different homogeneous catalysts.
| Catalyst |
Gas yield (mmol/g feedstock) | CGE (%) | Gas composition (%) | H2 | CO | CH4 | CO2 | H2 | CO | CH4 | CO2 |
| Noncatalytic | 2.86 | 2.19 | 1.71 | 6.48 | 23.16 | 21.60 | 16.54 | 12.92 | 48.94 | LiOH | 5.23 | 1.30 | 1.34 | 2.72 | 11.96 | 49.39 | 12.28 | 12.65 | 25.68 | Na2CO3 | 3.14 | 1.43 | 1.42 | 5.42 | 18.46 | 27.52 | 12.53 | 12.45 | 47.50 | NaOH | 3.51 | 0.78 | 1.63 | 4.82 | 16.13 | 32.68 | 7.26 | 15.18 | 44.88 | K2CO3 | 5.64 | 1.08 | 2.55 | 5.09 | 19.44 | 39.28 | 7.52 | 17.76 | 35.45 | KOH | 7.00 | 0.92 | 2.98 | 4.22 | 18.12 | 46.30 | 6.08 | 19.71 | 27.91 | Ca(OH)2 | 6.66 | 1.88 | 1.81 | 3.37 | 15.75 | 48.54 | 13.70 | 13.19 | 24.56 | ZnCl2 | 5.22 | 1.06 | 2.13 | 7.72 | 24.33 | 32.36 | 6.57 | 13.21 | 47.86 |
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Catalyst, 1 g; feedstock, 1 g peanut shell + 0.3 g CMC; water density, 0.071 g/cm3; reaction time, 20 min; pressure, 22~24.0 MPa.
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