| abstract |
The present invention provides a production method in which the accumulation of coke on a catalyst is small, good reaction efficiency can be maintained for a long time, and unsaturated hydrocarbons can be obtained with excellent production efficiency. A process for obtaining a product gas containing at least one unsaturated hydrocarbon selected from the group consisting of olefins and conjugated dienes by contacting a raw material gas containing alkane with a dehydrogenation catalyst, wherein the dehydrogenation catalyst comprises: And at least one additive element selected from the group consisting of Na, K, and Ca, Al, Mg, a Group 14 metal element, and Pt, and the content of the additive element is a dehydrogenation catalyst The manufacturing method of unsaturated hydrocarbon which is 0.05 mass% or more and 0.70 mass% or less on the basis of the total amount of. [Selection figure] None |