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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/66706
Deactivation study of catalysts Amberlyst(tm) 35 and Purolite CT® 275 by acetonitrile
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Nowadays tertiary alkyl ethers are widely employed as high performance
components for gasoline blending. This is because ethers enhance gasoline properties,
such as octane rating. Ethers result essential to fulfil current environmental legislation,
especially in more developed countries. For this reason etherification reactions have
today an increasing interest for petrochemical industry.
The simultaneous liquid-phase production of ethyl tert-butyl ether (ETBE) and tertamyl
ethyl ether (TAEE) is the reaction system studied in the present work. These
ethers are usually formed from ethanol (as common reactant) and isobutene (IB) for
ETBE and isoamylenes (IA) for TAEE.
These olefins are part of the C4 and C5 cuts from Fluid Catalytic Cracking (FCC) or
Stream Cracking units (SC). Usual impurities from these cuts are basic compounds such
as acetonitrile (ACN) and amines. ACN is present in very low concentration but even at
such low concentrations is the main cause of acid catalyst deactivation. Diffuse
deactivation, means of acid sites neutralization, is one of the most important drawbacks
that affect the catalyst lifespan of industrial reactors.
For the mentioned causes, it is therefore interesting to study the effect of the
presence of ACN in the reactant streams on the catalysts used for etherification
reactions. The catalysts used in this study are AmberlystTM 35 (A35) and Purolite CT®
275 (CT275), both widely employed in industrial etherification units.
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Treballs Finals de Màster d'Enginyeria Química, Facultat de Química, Universitat de Barcelona, Curs: 2014-2015, Tutors: Carles Fité Piquer i Rodrigo Soto López
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FERNÁNDEZ ARMISÉN, Alberto. Deactivation study of catalysts Amberlyst(tm) 35 and Purolite CT® 275 by acetonitrile. [consulted: 9 of October of 2026]. Available at: https://hdl.handle.net/2445/66706