ITRM940507A1 - "PROCEDURE FOR THE SEPARATION OF M- AND P- DICHLOROBENZENE MIXTURES" - Google Patents
"PROCEDURE FOR THE SEPARATION OF M- AND P- DICHLOROBENZENE MIXTURES"Info
- Publication number
- ITRM940507A1 ITRM940507A1 IT94RM000507A ITRM940507A ITRM940507A1 IT RM940507 A1 ITRM940507 A1 IT RM940507A1 IT 94RM000507 A IT94RM000507 A IT 94RM000507A IT RM940507 A ITRM940507 A IT RM940507A IT RM940507 A1 ITRM940507 A1 IT RM940507A1
- Authority
- IT
- Italy
- Prior art keywords
- solvents
- group
- representatives
- dichlorobenzene
- mixtures
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title abstract 4
- ZPQOPVIELGIULI-UHFFFAOYSA-N 1,3-dichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1 ZPQOPVIELGIULI-UHFFFAOYSA-N 0.000 title abstract 3
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 238000000926 separation method Methods 0.000 title 1
- 239000002904 solvent Substances 0.000 abstract 4
- 150000001768 cations Chemical class 0.000 abstract 3
- 125000005843 halogen group Chemical group 0.000 abstract 3
- 125000001424 substituent group Chemical group 0.000 abstract 3
- 239000010457 zeolite Substances 0.000 abstract 3
- NPDACUSDTOMAMK-UHFFFAOYSA-N 4-Chlorotoluene Chemical compound CC1=CC=C(Cl)C=C1 NPDACUSDTOMAMK-UHFFFAOYSA-N 0.000 abstract 2
- 229910021536 Zeolite Inorganic materials 0.000 abstract 2
- 150000001555 benzenes Chemical group 0.000 abstract 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 abstract 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 abstract 1
- 150000004816 dichlorobenzenes Chemical class 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- -1 protons Chemical class 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Miscele di m- e p-diclorobenzene possono venire separate mediante trattamento di tali miscele in presenza di una combinazione di solventi con una zeolite Pentasil a 20 fino a 250°C, nel qual caso viene prelevato un filtrato arricchito in m-diclorobenzene ed il p-diclorobenzene viene ottenuto mediante estrazione dalla zeolite Pentasil con utilizzazione della stessa combinazione di solventi. Le zeoliti Pentasil possono contenere, come cationi scambiatili, protoni, cationi del primo o secondo gruppo principale del Sistema Periodico (Mendelejew), cationi dei metalli di terre rare oppure una miscela di più di questi. La combinazione di solventi è costituita da almeno due diversi solventi, i quali derivato da due gruppi A e rispettivamente B, dei quali rappresentanti del gruppo A sono benzeni sostituiti con un atomo di alogeno ed uno oppure due altri sostituenti oppure almeno due atomi di alogeno ed eventualmente un altro sostituente, ed i rappresentanti del gruppo B sono benzeni sostituiti con soltanto un atomo di alogeno ed eventualmente un altro sostituente. Per i rappresentanti del gruppo A, sono eccettuati il 4-clorotoluene ed i diclorobenzeni.Mixtures of m- and p-dichlorobenzene can be separated by treating these mixtures in the presence of a combination of solvents with a Pentasil zeolite at 20 up to 250 ° C, in which case a filtrate enriched in m-dichlorobenzene and the p -chlorobenzene is obtained by extraction from the Pentasil zeolite using the same combination of solvents. Pentasil zeolites can contain, as exchangeable cations, protons, cations of the first or second main group of the Periodic System (Mendelejew), cations of rare earth metals or a mixture of more of these. The combination of solvents consists of at least two different solvents, which are derived from two groups A and B respectively, of which representatives of group A are benzenes substituted with a halogen atom and one or two other substituents or at least two halogen atoms and possibly another substituent, and the representatives of group B are benzenes substituted with only one halogen atom and possibly another substituent. For representatives of group A, 4-chlorotoluene and dichlorobenzenes are excluded.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4325484A DE4325484A1 (en) | 1993-07-29 | 1993-07-29 | Process for the separation of mixtures of m- and p-dichlorobenzene |
| GB9416247A GB2292142A (en) | 1993-07-29 | 1994-08-11 | Process for separating mixtures of m-and p-dichloro-benzene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ITRM940507A0 ITRM940507A0 (en) | 1994-07-28 |
| ITRM940507A1 true ITRM940507A1 (en) | 1995-01-30 |
Family
ID=25928151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT94RM000507A ITRM940507A1 (en) | 1993-07-29 | 1994-07-28 | "PROCEDURE FOR THE SEPARATION OF M- AND P- DICHLOROBENZENE MIXTURES" |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH0769946A (en) |
| DE (1) | DE4325484A1 (en) |
| FR (1) | FR2708598B1 (en) |
| GB (1) | GB2292142A (en) |
| IT (1) | ITRM940507A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61268636A (en) * | 1985-05-23 | 1986-11-28 | Toray Ind Inc | Separation of dichlorobenzene isomer |
| JPS62175433A (en) * | 1986-01-28 | 1987-08-01 | Hodogaya Chem Co Ltd | Separation of dichlorobenzene isomer |
| DE3874507T2 (en) * | 1987-12-28 | 1993-04-22 | Toray Industries | METHOD FOR SEPARATING DICHLORCUMOLISOMERS. |
| DE4218841A1 (en) * | 1992-06-09 | 1993-12-16 | Bayer Ag | Meta- and para-di:chloro-benzene sepn. by adsorption on pentasil zeolite - from soln. in organic solvent, giving very selective adsorption of para-isomer |
-
1993
- 1993-07-29 DE DE4325484A patent/DE4325484A1/en not_active Withdrawn
-
1994
- 1994-07-22 JP JP6191221A patent/JPH0769946A/en active Pending
- 1994-07-28 IT IT94RM000507A patent/ITRM940507A1/en not_active IP Right Cessation
- 1994-07-29 FR FR9409418A patent/FR2708598B1/en not_active Expired - Fee Related
- 1994-08-11 GB GB9416247A patent/GB2292142A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB2292142A (en) | 1996-02-14 |
| FR2708598A1 (en) | 1995-02-10 |
| FR2708598B1 (en) | 1995-11-24 |
| GB9416247D0 (en) | 1994-10-05 |
| DE4325484A1 (en) | 1995-02-02 |
| JPH0769946A (en) | 1995-03-14 |
| ITRM940507A0 (en) | 1994-07-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0003 | Withdrawn |