CATALYST FOR REFORMING HYDROCARBON, ITS MANUFACTURING METHOD AND HYDROGEN-MANUFACTURING METHOD USING THE CATALYST

摘要

PROBLEM TO BE SOLVED: To provide a catalyst for reforming hydrocarbons which has high resistance to heat and coking, enables sufficient prevention of deterioration of the reforming reaction activity and choking of reaction sites due to deposition of carbon even after prolonged use under conditions of high temperatures and low mole ratios of steam to the carbon of hydrocarbons and exerts a sufficiently high reforming activity even in a small amount of Ni supported.

SOLUTION: The catalyst comprises a support and supported nickel. The support has a spinel crystal structure of formula MgO-nAl2O3, (wherein n is 0.9-1.0), such a composition that the intensity of the diffraction peak assigned to the lattice plane spacing of the MgO phase of 0.2103-0.2108 nm in the powder X-ray diffraction pattern measurements is 6% or smaller of that of the diffraction peak assigned to the lattice plane spacing of the MgAl2O4phase of 0.2435-0.2439 nm and a specific surface area after 5-hour baking at 850°C of ≥50 m2/g. The nickel is supported by the support as an active metal ingredient.

COPYRIGHT: (C)2007,JPO&INPIT