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It was shown for the example of ZSM-23 zeolite with Si/Al = 50 that medium-porous zeolites with MTT structure are effective catalysts for gas-phase isomerization of ethylene into acetaldehyde. At 300–400°C, a nearly 100% conversion of ethylene oxide is observed, and the selectivity of its conversion to acetaldehyde exceeds 90%. The main by-products of the reaction are crotonic aldehyde and dioxane...
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