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US 10,407,362 B2Granted
Diene production method
AssigneeJxtg Nippon Oil & Energy Corporation
InventorsNobuhiro Kimura, Junji Wakabayashi, Sosuke Higuchi
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Abstract
A method for producing diene comprises a step 1 of obtaining a straight chain internal olefin by removing a branched olefin from a raw material including at least the branched olefin and a straight chain olefin; and a step 2 of producing diene from the internal olefin by oxidative dehydrogenation using a first catalyst and a second catalyst, and the first catalyst has a complex oxide including bismuth, molybdenum and oxygen, and the second catalyst includes at least one selected from the group consisting of silica and alumina.
Claims12
A method for producing diene, comprising:
- obtaining a straight chain internal olefin by removing a branched olefin from a raw material including at least the branched olefin and a straight chain olefin;
- and
- producing diene from the internal olefin by oxidative dehydrogenation using a dehydrogenation catalyst and an isomerization catalyst,
- wherein
- the dehydrogenation catalyst has a complex oxide including bismuth, molybdenum and oxygen, and
- the isomerization catalyst includes at least one selected from the group consisting of silica-alumina and zeolites, and
- a volume ratio between the dehydrogenation catalyst and the isomerization catalyst (volume of the dehydrogenation catalyst/volume of the isomerization catalyst) is 1.5 to 20.
4 more elements
Dependencies are inferred from the claim text.