METHOD FOR PREPARING CATALYST FOR STEAM REFORMING OF SULFUR-CONTAINING METHANE GAS, AND METHOD FOR PREPARING HYDROGEN BY USING SAME

The present invention relates to: a method for preparing a nickel-auxiliary metal type composite metal catalyst by using an alumina support in which heterogeneous crystal phases are mixed; and a method for preparing hydrogen through steam reforming of sulfur-containing methane gas by using same, relates to a nickel-transition metal/hybrid alumina catalyst, and a preparation therefor, the catalyst being prepared by compositely and sequentially adding, through pressurized spraying, nickel and an auxiliary metal to a hybrid alumina support in which acid sites are removed through heat treatment, wherein the alumina support is prepared to have a ratio of alpha-alumina to theta-alumina of 10 or more, a specific surface area of 5-20 m2/g and an average pore distribution of 10-50 nm and is used, the amount of nickel supported on the catalyst is 5-15 wt%, the dispersity of nickel is 2-15%, and the auxiliary metal is supported such that the weight ratio of nickel to the auxiliary metal is 5-10, and relates to a method for preparing hydrogen through steam reforming of sulfur-containing methane gas by using the catalyst. The catalyst prepared according to the present invention is used so as to maximize, by means of macropores within the catalyst, air permeability between reactants and the catalyst, thereby increasing reaction rate, inhibits, through binding with cerium, carbon deposition and high temperature particle sintering, which are problems of a nickel catalyst, and increases, through the addition of barium, resistance to sulfur poisoning so as to improve catalyst durability, thereby enabling hydrogen, having long-term stability, to be prepared. La présente invention concerne : un procédé de préparation d'un catalyseur métallique composite de type métal auxiliaire au nickel à l'aide d'un support d'alumine dans lequel des phases cristallines hétérogènes sont mélangées ; et un procédé de préparation d'hydrogène par reformage à la vapeur de gaz méthane contenant du soufre l'utilisant ; l'invention concerne en outre un catalyseur à base de nickel-métal de transition/alumine hybride et sa préparation, le catalyseur étant préparé par ajout de manière composite et séquentielle, par pulvérisation sous pression, de nickel et d'un métal auxiliaire sur un support d'alumine hybride dans lequel des sites acides sont éliminés par traitement thermique, le support d'alumine étant préparé de manière à avoir un rapport d'alpha-alumine au thêta-alumine supérieur ou égal à 10, une