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- W28932399 abstract "Abstract The zeolite erionite and its isostructural silicoaluminophosphate analogue, SAPO-17, were studied with respect to their catalytic behaviour in the MTO process, the emphasis being laid on SAPO-17. It proved superior to erionite both with respect to olefln selectivity and catalyst lifetime. Ethylene constituted almost 70 mol% and propylene almost 20 mol% of the product, compared to a maximum of 40 mol% ethylene and 30 mol% propylene with erionite. It was active for 10-20 h, the erionite for less than 2 h, and erionite exhibited ethylene/propylene selectivity for only one hour. Experiments with SAPO-17 in range 350-475°C showed optimum behaviour around 425°C. Outside this temperature lifetime and selectivity deteriorated quickly. A deactivated sample of SAPO-17 could be restored to full activity by calcination in air at 500-550°C." @default.
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- W28932399 date "1994-01-01" @default.
- W28932399 modified "2023-10-06" @default.
- W28932399 title "Conversion of Methanol to Light Olefins over Sapo-17 Molecular Sieve" @default.
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- W28932399 doi "https://doi.org/10.1016/s0167-2991(08)63901-4" @default.
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