Patent ID: 7777086
Filing Date: 2010-08-17
Classification: C07C,Y02P

Abstract:
1. In a process for producing desired alkyl aromatic compound(s) by reacting an olefin feed with an aromatic feed in a reaction section in the presence of acidic zeolite catalyst(s) wherein the olefin feed contains at least a contaminant in an amount sufficient to adversely affect the performance of the acidic zeolite catalyst(s), the improvements comprising: (a) treating the olefin feed to said reaction section by distillation to substantially separate nitrogen contaminants having high volatility relative to said olefin feed, or nitrogen contaminants having low volatility relative to said olefin feed, or both from the olefin feed, such contaminants are present in the olefin feed in amounts sufficient to adversely affect the performance of the acidic zeolite catalyst(s), wherein said nitrogen contaminant(s) comprises at least one of n-formyl morpholine, n-methylpyrrolidinone and ammonia; and, (b) passing the olefin feed pretreated in accordance with step (a) to said reaction section.