GB902724A - Separation of aromatic isomers - Google Patents

Separation of aromatic isomers

Info

Publication number
GB902724A
GB902724A GB2948061A GB2948061A GB902724A GB 902724 A GB902724 A GB 902724A GB 2948061 A GB2948061 A GB 2948061A GB 2948061 A GB2948061 A GB 2948061A GB 902724 A GB902724 A GB 902724A
Authority
GB
United Kingdom
Prior art keywords
exchange fluid
adsorbent
mixture
adsorbed
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2948061A
Inventor
Raymond Nicholas Fleck
Carlyle Grover Wight
Edward Lee Wiseman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Oil Company of California
Original Assignee
Union Oil Company of California
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL249278D priority Critical patent/NL249278A/xx
Priority to US800961A priority patent/US2958708A/en
Application filed by Union Oil Company of California filed Critical Union Oil Company of California
Priority to GB2948061A priority patent/GB902724A/en
Publication of GB902724A publication Critical patent/GB902724A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives
    • C07C17/389—Separation; Purification; Stabilisation; Use of additives by adsorption on solids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/82—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by solid-liquid treatment; by chemisorption
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/86—Purification; separation; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/12—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers
    • C07C7/13—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers by molecular-sieve technique

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)

Abstract

A process for effecting at least a partial resolution of a mixture of isomeric dihalobenzenes, cresols, monohalotoluenes or toluidines comprises contacting the mixture in fluid form with a solid granular absorbent consisting essentially of a zeolitic crystalline, partially dehydrated, metallo alumino silicate having pores of substantially uniform diameter between 7 and 13 and separating the fluid phase from the solid phase. The adsorbent used is a zeolite X "molecular sieve" of the type described in Specification 777,233 and U.S.A. Specification 2,882,244. The adsorbed component of the mixture may be desorbed by contacting the solid phase with a displacement exchange fluid which is adsorbed on the zeolite and from which the desorbed component may be readily separated. The adsorbent may be used in 1 or more static beds, when adsorption and desorption may take place simultaneously in different beds in the set, or as a moving compact bed. The process may be worked continuously by (1) contacting the mixture with a lean adsorbent upon which is adsorbed the displacement exchange fluid to obtain a rich adsorbent and a raffinate comprising unadsorbed components and displacement exchange fluid, (2) contacting the rich adsorbent with the exchange fluid to give a lean adsorbent and an extract comprising adsorbed components and exchange fluid, (3) recycling the lean adsorbent to (1), (4) separating exchange fluid from the raffinate and extract and (5) recycling the separated exchange fluid to (2). The process is preferably carried out in the vapour phase at 100-700 DEG F. and 0-100 p.s.i.g. In the examples the following pairs of isomers are partially separated: o- and m- and m- and p-bromotoluene, o- and p-chlorotoluene, p- and m- and o- and m-dichlorobenzene, (exchange fluid, chlorobenzene); o- and p- and m- and o-toluidine, (exchange fluid, aniline); and p- and m- and o- and m-cresol, (exchange fluid, phenol). Reference has been directed by the Comptroller to Specification 828,777.
GB2948061A 1959-03-23 1960-02-15 Separation of aromatic isomers Expired GB902724A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL249278D NL249278A (en) 1960-02-15
US800961A US2958708A (en) 1959-03-23 1959-03-23 Separation of isomeric halogenated aromatic compounds
GB2948061A GB902724A (en) 1960-02-15 1960-02-15 Separation of aromatic isomers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2948061A GB902724A (en) 1960-02-15 1960-02-15 Separation of aromatic isomers

Publications (1)

Publication Number Publication Date
GB902724A true GB902724A (en) 1962-08-09

Family

ID=10292223

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2948061A Expired GB902724A (en) 1959-03-23 1960-02-15 Separation of aromatic isomers

Country Status (2)

Country Link
GB (1) GB902724A (en)
NL (1) NL249278A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131545B (en) * 1959-02-18 1962-06-14 Wilhelm Hegenscheidt Kommandit Device for roller burnishing of cylindrical or slim conical workpieces
FR2465704A1 (en) * 1979-09-20 1981-03-27 Toray Industries PROCESS FOR SEPARATING ISOMERIC ALKYLPHENOL FROM ISOMERIC MIXTURE BY ADSORPTION TECHNIQUES
EP0072008A1 (en) * 1981-08-11 1983-02-16 Hoechst Aktiengesellschaft Process for the preparation of p-chlorotoluene and/or of m-chlorotoluene
EP0278680A1 (en) * 1987-02-10 1988-08-17 Hodogaya Chemical Co., Ltd. Method for selective isolation of m-dichlorobenzene
CN110511121A (en) * 2018-05-22 2019-11-29 中国石油化工股份有限公司 The method of liquid phase adsorption separation paracresol
CN110511122A (en) * 2018-05-22 2019-11-29 中国石油化工股份有限公司 The method of liquid phase adsorption separation Cresol Isomeric Compound

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131545B (en) * 1959-02-18 1962-06-14 Wilhelm Hegenscheidt Kommandit Device for roller burnishing of cylindrical or slim conical workpieces
FR2465704A1 (en) * 1979-09-20 1981-03-27 Toray Industries PROCESS FOR SEPARATING ISOMERIC ALKYLPHENOL FROM ISOMERIC MIXTURE BY ADSORPTION TECHNIQUES
EP0072008A1 (en) * 1981-08-11 1983-02-16 Hoechst Aktiengesellschaft Process for the preparation of p-chlorotoluene and/or of m-chlorotoluene
US4650915A (en) * 1981-08-11 1987-03-17 Hoechst Aktiengesellschaft Process for preparing p-chlorotoluene and/or m-chlorotoluene
EP0278680A1 (en) * 1987-02-10 1988-08-17 Hodogaya Chemical Co., Ltd. Method for selective isolation of m-dichlorobenzene
US4873383A (en) * 1987-02-10 1989-10-10 Hodogaya Chemical Co., Ltd. Method for selective isolation of Dichlorobenzene
CN110511121A (en) * 2018-05-22 2019-11-29 中国石油化工股份有限公司 The method of liquid phase adsorption separation paracresol
CN110511122A (en) * 2018-05-22 2019-11-29 中国石油化工股份有限公司 The method of liquid phase adsorption separation Cresol Isomeric Compound
CN110511121B (en) * 2018-05-22 2022-02-08 中国石油化工股份有限公司 Method for separating p-cresol by liquid phase adsorption
CN110511122B (en) * 2018-05-22 2022-03-11 中国石油化工股份有限公司 Method for separating cresol isomer by liquid phase adsorption

Also Published As

Publication number Publication date
NL249278A (en)

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