Single-step precipitation method of producing magnesia-zirconia complex carrier for catalyst for oxidative dehydrogenation of n-butane, magnesium orthovanadate catalyst supported on magnesia-zirconia complex carrier, and method of producing n-butene and 1,3-butadiene using said catalyst

A method for preparing a magnesia-zirconia complex carrier for a catalyst for oxidative dehydrogenation of n-butane which comprises the following steps:

• (a) preparing a magnesia-zirconia solid component by a single step gel-oxalate method, which comprises the synthesis of magnesia-zirconia by mixing an alcohol solution in which a magnesium precursor and a zirconium precursor are dissolved in an alcohol with an alcohol solution of oxalic acid in which oxalic acid is dissolved in an alcohol;
• and
• (b) obtaining a magnesia-zirconia carrier for a catalyst for oxidative dehydrogenation of n-butane by separating, drying and heating the magnesia-zirconia solid component obtained from the above step (a).