Transition metal-noble metal complex oxide catalyst for dehydrogenation prepared by one-pot synthesis and use thereof

A method of preparing a complex oxide catalyst for dehydrogenation, comprising:

• providing a precursor of a first transition metal selected from the group consisting of gallium, vanadium, chromium, manganese, molybdenum, and zinc;
• providing a precursor of a hydrogen-activating metal comprising at least one selected from the group consisting of Groups 8, 9, 10, and 11 elements in a periodic table;
• providing an alumina precursor;
• mixing the precursor of the first transition metal, the precursor of the hydrogen-activating metal and the alumina precursor in one pot to obtain a mixture;
• and
• synthesizing a catalyst from the mixture in one pot using a sol-gel process, wherein the precursor of the first transition metal, the precursor of the hydrogen-activating metal and the alumina precursor are dissolved in a water, and stirred to hydrolyze the alumina precursor,
• wherein the amount of the first transition metal is 0.1 wt % to 20 wt % and the amount of the hydrogen-activating metal is 0.01 wt % to 2 wt %, based on an amount of alumina in a final catalyst.