RO84979B1 - Procedeu de preparare a 2, 6-xilenolului - Google Patents
Procedeu de preparare a 2, 6-xilenoluluiInfo
- Publication number
- RO84979B1 RO84979B1 RO108509A RO10850982A RO84979B1 RO 84979 B1 RO84979 B1 RO 84979B1 RO 108509 A RO108509 A RO 108509A RO 10850982 A RO10850982 A RO 10850982A RO 84979 B1 RO84979 B1 RO 84979B1
- Authority
- RO
- Romania
- Prior art keywords
- xylenol
- phenol
- methanol
- distillation
- catalyst
- Prior art date
Links
- NXXYKOUNUYWIHA-UHFFFAOYSA-N 2,6-Dimethylphenol Chemical compound CC1=CC=CC(C)=C1O NXXYKOUNUYWIHA-UHFFFAOYSA-N 0.000 title abstract 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 9
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 4
- 239000003054 catalyst Substances 0.000 abstract 3
- 238000004821 distillation Methods 0.000 abstract 3
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical compound COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000000047 product Substances 0.000 abstract 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 abstract 1
- DTFKRVXLBCAIOZ-UHFFFAOYSA-N 2-methylanisole Chemical compound COC1=CC=CC=C1C DTFKRVXLBCAIOZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000029936 alkylation Effects 0.000 abstract 1
- 238000005804 alkylation reaction Methods 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000012736 aqueous medium Substances 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000011068 loading method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 239000012808 vapor phase Substances 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Inventia se refera la un procedeu de preparare a 2,6-xilenolului, prin alchienarea în faza de vapori, a fenolului sau a amestecului constituit din fenol, anisol, 0-crezol si/sau o-metilanisol cu metanol, la temeperaturi de 250....400 degree C la o încarcare a fenolului de 0,05....2 g/g catalizator si ora, si la un raport molar metanol:fenol cuprins între 0,5 si 2, catalizatorul folosit fiind o aliumina la temepraturi de 30....50 degree C, în mediu apos amoniacal, în care se introduce o solusie apoasa de azotat de aluminiu, pH-ul suspensiei scîzînd la sfîrsitul precipitarii pîna la 8,5...9,0, uscare la 100...110 degree C, caracterizat prin aceea ca, în scopul obtinerii unui produs de înalta puritate, metanolul se alimenteaza în lungul stratuli catalitic în 2...10 puncte de alimentare cu un debit de 5...300, de preferinta 20...200 l/kg catalizator si ora, purificarea concentratului de 2,6-xilenol rezultat la distilarea produsului de reacstie, realizîndu-se prin distilare în vid pe o coloana de 25...50 talere, cu separarea 2,6-xilenolului pur ca frasiune o-crezolului contaminat cu cantitati mici de 2,6-xilenol, fractiune care se recircula la faza de distilare, m- si p-crezolii râmînînd în produsul de blaz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO108509A RO84979B1 (ro) | 1982-08-26 | 1982-08-26 | Procedeu de preparare a 2, 6-xilenolului |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO108509A RO84979B1 (ro) | 1982-08-26 | 1982-08-26 | Procedeu de preparare a 2, 6-xilenolului |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO84979A2 RO84979A2 (ro) | 1984-08-17 |
| RO84979B1 true RO84979B1 (ro) | 1984-09-30 |
Family
ID=20111972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO108509A RO84979B1 (ro) | 1982-08-26 | 1982-08-26 | Procedeu de preparare a 2, 6-xilenolului |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO84979B1 (ro) |
-
1982
- 1982-08-26 RO RO108509A patent/RO84979B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO84979A2 (ro) | 1984-08-17 |
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