| abstract |
(57) [Problem] To suppress the generation of by-products such as aromatic hydrocarbons and heavy substances in producing lower olefins such as ethylene and propylene by catalytically cracking a hydrocarbon raw material using a catalyst. And a method for producing a lower olefin in an advantageous manner in terms of energy cost. SOLUTION: This is a method for producing an olefin by oxidatively decomposing a hydrocarbon raw material in the presence of a catalyst comprising silicon dioxide and in the presence of oxygen, wherein the silicon dioxide is amorphous silica and / or α-type or β-type. A method for producing a lower olefin, characterized in that it is a type of quartz. |