ポリアルミン酸アルカリを担体としたニッケル触媒による炭化水素の水蒸気改質

抄録

An alkalized nickel catalyst, prepared from nickel oxide and β"-Al₂O₃ a kind of alkali poly-aluminates, was used for steam reforming of n-hexane under various reaction temperatures. pressures and the steam/carbon mole ratios of 1.5 and 3.0, using a flow reactor and the following results were obtained.
1) In the steam/carbon mole ratio of 1.5. the produced gas composition closely reached the theoretical equilibrium amounts, but small amount of carbon residues was deposited on the catalyst.
2) In the steam/carbon mole ratio of 3.0, the produced gas composition did not reach the theoretical equilibrium amount under the reaction temperature at 600°C or lower, but little carbon residues were formed.
3) In the steam/carbon mole ratio of 3.0, there was a tendency of reaching an equilibrium to a lesser extent as the reaction pressure increased.
4) This catalyst showed better performance than nickel alumina catalyst in its ability of removing carbon deposit.