Invention Grant
US06909026B2 Process for liquid phase aromatics alkylation comprising in-situ catalyst reactivation with polar compounds
有权
液相芳烃烷基化方法,包括用极性化合物原位催化剂再活化
- Patent Title: Process for liquid phase aromatics alkylation comprising in-situ catalyst reactivation with polar compounds
- Patent Title (中): 液相芳烃烷基化方法,包括用极性化合物原位催化剂再活化
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Application No.: US10318882Application Date: 2002-12-13
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Publication No.: US06909026B2Publication Date: 2005-06-21
- Inventor: Ajit B. Dandekar , Thomas Francis Degnan , John P. McWilliams , Chaya R. Venkat
- Applicant: Ajit B. Dandekar , Thomas Francis Degnan , John P. McWilliams , Chaya R. Venkat
- Applicant Address: US TX Irving
- Assignee: ExxonMobil Oil Corporation
- Current Assignee: ExxonMobil Oil Corporation
- Current Assignee Address: US TX Irving
- Agent Darryl M. Tyus; Linda A. Kubena
- Main IPC: C07C2/66
- IPC: C07C2/66 ; C07C2/68

Abstract:
The catalyst becomes at least partially deactivated by sorbing catalyst poisons present in the feed during a process for alkylating aromatics by contacting a feed containing benzene, toluene, xylenes, alkylbenzenes, naphthalene or substituted naphthalenes under liquid phase alkylating conditions with C2-C16 olefins in the presence of MCM-22, MCM-36, MCM-49, MCM-56, ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-48, ZSM-50, ZSM-4, ZSM-18, ZSM-20, Zeolite X, Zeolite Y, USY, mordenite or offretite to provide an alkylated aromatic product. The at least partially deactivated catalyst can be treated in situ by contacting with at least one polar compound having a dipole moment of at least 0.05 Debyes and selected from the group consisting of acetic acid, formic acid, water, and carbon monoxide, under conditions of temperature and pressure employed in the liquid phase alkylating conditions which are sufficient to at least partially desorb the catalyst poison from the catalyst.
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