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Title: Method For Reactivating Solid Catalysts Used For Alklation Reactions

Abstract

A method for reactivating a solid alkylation catalyst is provided which can be performed within a reactor that contains the alkylation catalyst or outside the reactor. Effective catalyst reactivation is achieved whether the catalyst is completely deactivated or partially deactivated. A fluid reactivating agent is employed to dissolve catalyst fouling agents and also to react with such agents and carry away the reaction products. The deactivated catalyst is contacted with the fluid reactivating agent under pressure and temperature conditions such that the fluid reactivating agent is dense enough to effectively dissolve the fouling agents and any reaction products of the fouling agents and the reactivating agent. Useful pressures and temperatures for reactivation include near-critical, critical, and supercritical pressures and temperatures for the reactivating agent. The fluid reactivating agent can include, for example, a branched paraffin containing at least one tertiary carbon atom, or a compound that can be isomerized to a molecule containing at least one tertiary carbon atom.

Inventors:
 [1];  [1];  [2];  [3];  [1]
  1. Idaho Falls, ID
  2. Shelley, ID
  3. Proctorville, OH
Issue Date:
Research Org.:
BECHTEL BWXT IDAHO LLC
OSTI Identifier:
879995
Patent Number(s):
6887813
Application Number:
10/412806
Assignee:
Bechtel BWXT Idaho, LLC (Idaho Falls, ID)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
DOE Contract Number:  
AC07-99ID13727
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Ginosar, Daniel M, Thompson, David N, Coates, Kyle, Zalewski, David J, and Fox, Robert V. Method For Reactivating Solid Catalysts Used For Alklation Reactions. United States: N. p., 2005. Web.
Ginosar, Daniel M, Thompson, David N, Coates, Kyle, Zalewski, David J, & Fox, Robert V. Method For Reactivating Solid Catalysts Used For Alklation Reactions. United States.
Ginosar, Daniel M, Thompson, David N, Coates, Kyle, Zalewski, David J, and Fox, Robert V. Tue . "Method For Reactivating Solid Catalysts Used For Alklation Reactions". United States. https://www.osti.gov/servlets/purl/879995.
@article{osti_879995,
title = {Method For Reactivating Solid Catalysts Used For Alklation Reactions},
author = {Ginosar, Daniel M and Thompson, David N and Coates, Kyle and Zalewski, David J and Fox, Robert V},
abstractNote = {A method for reactivating a solid alkylation catalyst is provided which can be performed within a reactor that contains the alkylation catalyst or outside the reactor. Effective catalyst reactivation is achieved whether the catalyst is completely deactivated or partially deactivated. A fluid reactivating agent is employed to dissolve catalyst fouling agents and also to react with such agents and carry away the reaction products. The deactivated catalyst is contacted with the fluid reactivating agent under pressure and temperature conditions such that the fluid reactivating agent is dense enough to effectively dissolve the fouling agents and any reaction products of the fouling agents and the reactivating agent. Useful pressures and temperatures for reactivation include near-critical, critical, and supercritical pressures and temperatures for the reactivating agent. The fluid reactivating agent can include, for example, a branched paraffin containing at least one tertiary carbon atom, or a compound that can be isomerized to a molecule containing at least one tertiary carbon atom.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {5}
}

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Works referenced in this record:

Green organic synthesis dives into near-critical water
journal, January 2000


Supercritical-Phase Alkylation Reaction on Solid Acid Catalysts:  Mechanistic Study and Catalyst Development
journal, May 1997


Catalysis by shape selective zeolites-science and technology
journal, January 1986


Zeolites: Catalysts for Organic Syntheses
journal, February 1988


Ionic liquids: applications in catalysis
journal, May 2002