LOWERING NITROGEN-CONTAINING LEWIS BASES IN MOLECULAR SIEVE OLIGOMERISATION

摘要

Nitrogen-containing Lewis bases were found to act as poisons for molecular sieve catalysts used in oligomerisation reactions. A lowering of their presence in the feed prior to the contacting thereof with the molecular sieve brings a significant extension of catalyst life. Excessive elimination of these poisons may be disadvantageous. Lowering the levels of these catalyst poisons to more manageable concentrations is therefore preferred.