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A novel reaction of the double bond migration (DBM) of 1-butene was found on Br nsted acid sites (BAS) of H(D)-ZSM-5 below 230 K, which does not involve either carbocation or alkoxy intermediate. The activation energy was obtained as 49 ± 4 kJ mol -1 on D-ZSM-5. The H/D isotope exchange reaction of the OD groups of zeolites forming 1:1 complex with 1-butene was absent during DBM.This...
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