Patent ID: 9522383
Filing Date: 2016-12-20
CPC Classification: B01J,C07C,Y02P

Claim Text:
1. A method for preparing n-butene and 1,3-butadiene, comprising: (a) preparing a mixed precursor solution of magnesium and zirconium by dissolving a magnesium precursor and a zirconium precursor in a first solvent; (b) preparing a solid acid solution by dissolving at least one solid acid selected from the group consisting of citric acid, succinic acid, malic acid, and tartaric acid in a second solvent; (c) preparing a carrier forming solution by mixing the mixed precursor solution prepared in the step (a) and the solid acid solution prepared in the step (b); (d) producing a magnesia-zirconia complex carrier by heat-drying the carrier forming solution prepared in the step (c) and heating a resultant solid product; (e) impregnating the magnesia-zirconia complex carrier prepared in the step (d) with an aqueous vanadate solution; (f) preparing a magnesia-zirconia complex carrier-supported magnesium orthovanadate catalyst by heating the product obtained from the step (e); and (g) carrying out an oxidative dehydrogenation of n-butane on the magnesia-zirconia complex carrier-supported magnesium orthovanadate catalyst prepared in the step (f) with a mixed gas comprising n-butane, oxygen and nitrogen as a reactant.