Method of producing carrier for catalyst for oxidative dehydrogenation of n-butane, method of producing carrier-supported magnesium orthovanadate catalyst, and method of producing n-butene and 1, 3-butadiene using said catalyst

A method for preparing a carrier for a catalyst for oxidative dehydrogenation of n-butane comprising the following steps:

• (a) preparing each alcohol solution of zirconium and oxalic acid by dissolving the zirconium precursor and oxalic acid into an alcohol, respectively, wherein a molar ration of oxalic acid to zirconium being 2-5 to 1;
• (b) synthesizing zirconia by mixing the alcohol solution of zirconium and the alcohol solution of oxalic acid prepared in the above step (a);
• (c) obtaining zirconia used for the preparation of a magnesia-zirconia complex carrier by separating, drying and heating the solid component zirconia from the solution resulted from the above step (b);
• (d) impregnating zirconia obtained from the above step (c) with an aqueous magnesium salt solution;
• and
• (e) obtaining a magnesia-zirconia complex carrier for a catalyst for oxidative dehydrogenation of n-butane by drying and heating the product resulted from the above step (d).