公开(公告)号：EP1140739A1

公开(公告)日：2001-10-10

申请号：EP99958760.3

申请日：1999-11-04

Applicant: MOBIL OIL CORPORATION

Inventor： DEGNAN, Thomas, Francis, Jr. ,  GREEN, John, R. ,  HUANG, Yun, Yang ,  VENKAT, Chaya, Rao ,  WEISS, Ronald, A.

IPC: C07C2/64 ,  C07C4/18 ,  C07C7/12

CPC classification number: C07C15/085 ,  C07C15/073

Abstract: Alkylation product is contacted with a purification medium in a liquid phase pre-reaction step to remove impurities and form a purified stream. The purified stream is then further processed by liquid phase transalkylation to convert the polyalkylated aromatic compound to a monoalkylated aromatic compound. The process may use a molecular sieve catalyst such as MCM-22 as the purification medium in the pre-reaction step because of its high reactivity for alkylation, strong retention of catalyst poisons and low reactivity for oligomerization under the pre-reactor conditions. Olefins, diolefins, styrene, oxygenated organic compounds, sulfur containing compounds, nitrogen containing compounds and oligomeric compounds are removed.