Production method of epsilon-caprolactam
AssigneeSumitomo Chemical Company, Limited
InventorsKazuaki YOSHIMURA, Nobufumi WATANABE, Kohei SEKI, Masashi TERAMORI, Keisuke TANAKA
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Abstract
A method for producing ε-caprolactam involves a step of Beckmann-rearranging cyclohexanone oxime in a gas phase in the presence of a zeolite catalyst containing silicon and at least one element selected from alkaline earth metal elements and magnesium. The concentration of the above-described element in the zeolite catalyst is 3 ppm by mass or more and 10000 ppm by mass or less.
Claims5
A production method of ε-caprolactam, comprising a step of Beckmann-rearranging cyclohexanone oxime in a gas phase in the presence of a zeolite catalyst containing a silicon element and at least one element selected from the group consisting of alkaline earth metal elements and a magnesium element, wherein the concentration of the at least one element selected from the group consisting of alkaline earth metal elements and a magnesium element in the zeolite catalyst is 3 ppm by mass or more and 10000 ppm by mass or less.
Dependencies are inferred from the claim text.