JPS5490123A - Separation of xylene isomers - Google Patents
Separation of xylene isomersInfo
- Publication number
- JPS5490123A JPS5490123A JP15732377A JP15732377A JPS5490123A JP S5490123 A JPS5490123 A JP S5490123A JP 15732377 A JP15732377 A JP 15732377A JP 15732377 A JP15732377 A JP 15732377A JP S5490123 A JPS5490123 A JP S5490123A
- Authority
- JP
- Japan
- Prior art keywords
- xylene
- zeolite
- mixture
- metal ion
- type synthetic
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To separate p-xylene, selectively and efficiently, which is a raw material for the production of terephthalic acid or dimethyl terephtalate, a raw material of polyesters, from a mixture containing xylene isomers, by using new adsorbent comprising L-type synthetic zeolite.
CONSTITUTION: p-Xylene is separated from a mixture of xylene isomers b contacting the mixture with a solid adsorbent comprising an L-type synthetic zeolite having compostiton of formula (M is cation such as Na, K; n is its valence number) or a modified L-type synthetic zeolite obtained by substituting the alkali metal ion of the above zeolite with an alkaline earth metal ion or a rare earth metal ion. The treatment is carried out at 15-120°C. p-Xylene is desorbed from the zeolite by conventional desorption operations. L-type zeolite does not exist in nature, and is obtained, e.g. by the crystallization of a mixture of potassium aluminate and silica sol.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15732377A JPS5490123A (en) | 1977-12-28 | 1977-12-28 | Separation of xylene isomers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15732377A JPS5490123A (en) | 1977-12-28 | 1977-12-28 | Separation of xylene isomers |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5490123A true JPS5490123A (en) | 1979-07-17 |
Family
ID=15647174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15732377A Pending JPS5490123A (en) | 1977-12-28 | 1977-12-28 | Separation of xylene isomers |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5490123A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006525325A (en) * | 2003-05-01 | 2006-11-09 | ビーピー・コーポレーション・ノース・アメリカ・インコーポレーテッド | How to get para-xylene |
-
1977
- 1977-12-28 JP JP15732377A patent/JPS5490123A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006525325A (en) * | 2003-05-01 | 2006-11-09 | ビーピー・コーポレーション・ノース・アメリカ・インコーポレーテッド | How to get para-xylene |
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