RO97666B1 - Process for obtaining zeolite catalyst used for obtaining hemiterpene - Google Patents
Process for obtaining zeolite catalyst used for obtaining hemiterpeneInfo
- Publication number
- RO97666B1 RO97666B1 RO128654A RO12865487A RO97666B1 RO 97666 B1 RO97666 B1 RO 97666B1 RO 128654 A RO128654 A RO 128654A RO 12865487 A RO12865487 A RO 12865487A RO 97666 B1 RO97666 B1 RO 97666B1
- Authority
- RO
- Romania
- Prior art keywords
- zeolite
- obtaining
- zsm
- hemiterpene
- catalyst used
- Prior art date
Links
- 229910021536 Zeolite Inorganic materials 0.000 title abstract 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title abstract 7
- 239000010457 zeolite Substances 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 4
- 239000003054 catalyst Substances 0.000 title abstract 3
- 230000003197 catalytic effect Effects 0.000 abstract 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 abstract 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 238000002360 preparation method Methods 0.000 abstract 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 1
- 230000002209 hydrophobic effect Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Inventia se refera la un procedeu de preparare a unui catalizator zeolitic pentru obtinerea izoprenului prin reactia de descompunere a 4,4'-dimetil-1,3-dioxanului (DMD). Superioritatea procedeului conform inventiei consta în folosirea drept catalizator a zeolitului înalt silicios de tip ZSM-5 modificat cu acid fosforic, care datorita caracterului sau hidrofob îsi mentine activitatea catalitica în prezenta apei rezultate din proces. Zeolitul înalt silicios ZSM-5 are activitatea catalitica în forma hidrogen, nefiind necesara prezenta unor metale cu actiune catalitica. De asemenea, acest tip de zeoliti prezinta înalta stabilitate termica si chimica, putînd fi regenerat cu usurinta. Cantitatea de acid fosforic utilizat cu adaos pentru zeolitul H-ZSM-5 este mica. Prezenta inventie largeste gama de utilizari în cataliza a zeolitului ZSM-5.The invention relates to a process for the preparation of a zeolitic catalyst for the preparation of isoprene by the decomposition reaction of 4,4'-dimethyl-1,3-dioxane (DMD). The superiority of the process according to the invention consists in using as a catalyst the phosphoric acid-modified ZSM-5 zeolite type which, due to its hydrophobic character, maintains its catalytic activity in the presence of process water. The high silica zeolite ZSM-5 has catalytic activity in the form of hydrogen, and the presence of metals with catalytic action is not required. Also, this type of zeolite has high thermal and chemical stability and can be easily regenerated. The amount of phosphoric acid used with the addition of H-ZSM-5 zeolite is low. The present invention broadens the zeolite ZSM-5 zeolite utilization range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO128654A RO97666B1 (en) | 1987-06-16 | 1987-06-16 | Process for obtaining zeolite catalyst used for obtaining hemiterpene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO128654A RO97666B1 (en) | 1987-06-16 | 1987-06-16 | Process for obtaining zeolite catalyst used for obtaining hemiterpene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO97666B1 true RO97666B1 (en) | 1989-09-05 |
Family
ID=40905827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO128654A RO97666B1 (en) | 1987-06-16 | 1987-06-16 | Process for obtaining zeolite catalyst used for obtaining hemiterpene |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO97666B1 (en) |
-
1987
- 1987-06-16 RO RO128654A patent/RO97666B1/en unknown
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