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- W1967846768 abstract "We have examined the adsorption of methanol, ethanol, 1-propanol, 1-butanol, 2-propanol, and 2-methyl-2-propanol on H-ZSM-5 using temperature-programmed desorption (TPD) and thermogravimetrie analysis (TGA). For each of the alcohols except 1-butanol, there exists a clearly defined desorption state corresponding to one alcohol molecule per Al atom in the zeolite. For 2-methyl-2-propanol and 2-propanol, this molecule at the Al site completely reacts to olefin products and water; however, reaction occurs at 295 K for 2-methyl-2-propanol, while 2-propanol does not react until 360 K. Most of the methanol, ethanol, and 1-propanol adsorbed at the Al sites at this coverage desorbs unreacted. A substantial amount of the 1-butanol adsorbed near the Al sites reacts, but differs from the other alcohols in that it reacts through a dibutyl ether intermediate. These results can be understood in terms of the stabilities of the carbenium ion intermediates which can be formed during reaction. A potential energy scheme, based on gas-phase proton affinity, is developed. This scheme provides a formalism for explaining relative reactivities of alcohols on H-ZSM-5 in TPD." @default.
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- W1967846768 date "1986-04-01" @default.
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- W1967846768 title "The influence of oxonium ion and carbenium ion stabilities on the Alcohol/H-ZSM-5 interaction*1" @default.
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- W1967846768 doi "https://doi.org/10.1016/0021-9517(86)90331-3" @default.
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