Materials | Atmosphere | Conductivity [S/cm] × 10–3 | Activation energy [eV] 400 °C to 610 °C |
---|---|---|---|
NiO–Al2O3 | Air | Biogas | Hydrogen |
0.97 | 3.2 | 4.3 | |
0.88 | 0.67 | 0.23 |
Atomic % of NiO | Ni 54.43 |
O 45.57 | |
Atomic % of Al2O3 | Al 37.90 |
O 62.10 |
Material NiO–Al2O3 nanocomposite | Lattice parameter [Å] | Crystallite size [nm] | |||
---|---|---|---|---|---|
NiO | α-Al2O3 | ||||
a | a = b | c | NiO | α-Al2O3 | |
Standard data | 4.17 | 4.75 | 12.99 | ||
Sintered at 900 °C | 4.15 | 4.75 | 12.85 | 34 | 35 |
Sintered at 1200 °C | 4.15 | 4.76 | 12.88 | 37 | 37 |
Compound | DH | Cp [Kcal/mol K] at 298 K |
---|---|---|
Ni(NO3)2 6H2O | –528.6 | – |
Al(NO3)3 9H2O | –857.59 | – |
C2H5NO2 | –126.22 | – |
NiO | –57.3 | 0.01059 |
α-Al2O3 | –399.09 | 0.01889 |
CO2 | –94.05 | 0.00887 |
N2 | – | 0.00696 |
H2O | –57.97 | 0.00803 |
O2 | – | 0.00701 |
Adiabatic flame temperature of NiO | 978 °C | |
Adiabatic flame temperature of α-Al2O3 | 1323 °C |