Additives for maximizing light olefins in fluid catalytic cracking and process units
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United States of America Patent
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Mar 20, 2018
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Mar 2, 2012
filing date -
Mar 2, 2012
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Abstract
Additives for mixing into the base catalyst inventory of the fluid catalytic cracking (FCC) process units, so as to achieve a high selectivity of light olefins (ethylene and propylene), are described. Such additives comprise an FER zeolite and an MFI zeolite, the MFI zeolite preferably being zeolite ZSM-5. The mixture of the additive in a concentration greater than 2% w/w relative to the base catalyst of an FCC unit allows greater selectivity for light olefins, propylene and ethylene, while maintaining catalytic activity.
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