| 摘要 |
The conversion of cat poly gasoline to isobutene using an olefin disproportionation reaction is increased by subjecting a heavier olefin fraction separated from the olefin disproportionation effluent to a high temperature treatment with MgO prior to recycle of said fraction to the olefin disproportionation reactor. In a preferred embodiment, isoamylenes are advantageously prepared using a second olefin disproportionation step which employs the isobutene-containing stream as the feedstock.
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