SU692825A1 - Method of preparing cresols - Google Patents

Method of preparing cresols

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Publication number
SU692825A1
SU692825A1 SU782623969A SU2623969A SU692825A1 SU 692825 A1 SU692825 A1 SU 692825A1 SU 782623969 A SU782623969 A SU 782623969A SU 2623969 A SU2623969 A SU 2623969A SU 692825 A1 SU692825 A1 SU 692825A1
Authority
SU
USSR - Soviet Union
Prior art keywords
cresols
yield
phenol
selectivity
preparing
Prior art date
Application number
SU782623969A
Other languages
Russian (ru)
Inventor
Евгения Афанасьевна Вдовцова
Элеонора Алексеевна Кочеткова
Абдулла Султанович Султанов
Original Assignee
Среднеазиатский Научно-Исследовательский Институт Нефтеперерабатывающей Промышленности
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
Application filed by Среднеазиатский Научно-Исследовательский Институт Нефтеперерабатывающей Промышленности filed Critical Среднеазиатский Научно-Исследовательский Институт Нефтеперерабатывающей Промышленности
Priority to SU782623969A priority Critical patent/SU692825A1/en
Application granted granted Critical
Publication of SU692825A1 publication Critical patent/SU692825A1/en

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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
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Description

(54) СПОСОБ ПОЛУЧЕНИЯ КРЕЗОЛОВ(54) METHOD FOR OBTAINING CRESOLS

II

Изобретение относитс  к основному органическому синтезу, а именно к способам получени  крезолов.This invention relates to a basic organic synthesis, in particular to methods for producing cresols.

Известен способ получени  крезолов путем алкилировани  фенола триметилбензолами при 200-500°С в присутствии алюмосиликатного катализатора 1}. Процесс ведут при мольном соотношении фенол: триметилбензол 1-2:1, выход крезолов 31%, селективность по фенолу 50%, по триметилбензолу 57%.A known method for producing cresols by alkylation of phenol with trimethylbenzenes at 200-500 ° C in the presence of an aluminosilicate catalyst 1}. The process is carried out at a molar ratio of phenol: trimethylbenzene of 1-2: 1, the yield of cresols is 31%, the selectivity for phenol is 50%, for trimethylbenzene is 57%.

Однако дл  этого способа характерны недостаточно высокий выход крезолов и низка  селективность процесса.However, this method is characterized by an insufficiently high yield of cresols and a low selectivity of the process.

Целью изобретени  йвл етс  повышение выхода целевых продуктов и селективности процесса .The aim of the invention is to increase the yield of target products and the selectivity of the process.

Поставленна  цель достигаетс  способом получени  крезолов путем алкилировани  фенола гексаметилбензолом при 400-425 С в присутствии алюмосиликатного катализатора и при мольном отношении фенол :гексаметилбензол 3-10:1.This goal is achieved by the method of obtaining cresols by alkylation of phenol with hexamethylbenzene at 400-425 ° C in the presence of an aluminosilicate catalyst and at a molar ratio of phenol: hexamethylbenzene of 3-10: 1.

Предлагаемый способ позвол ет повысить выход крезолов до 48-84% и селективность доThe proposed method allows to increase the yield of cresols to 48-84% and selectivity to

.90%. . ,.90%. . ,

П р и м е р. Во вращающийс  автоклав объемом 250 см загружают 5,18 г смеси фенола и гексаметилбензола в мол рном соотно-шении 5,25:1 и 1,13 г (22,5 вес.%) промышленного шарикового алюмосиликата (фракци  1,6-2,5 мм), подают водород до давлени  7ат и реакционную смесь нагревают до 400-425 С (максимальное Давление в автоклаве 29 аТ(). Реакцию ведут в течение 1ч, после чего реакционную смесь охлаждают, снижают давление в автоклаве До атмосферного и отфильтровывают катализатор. Выход катализата 5,06 г ,(97,6%), выход крезолов 78,3%, селективность по фенолу 80,8%, по гексаметилбензолу 90,3%.PRI me R. A rotary autoclave with a volume of 250 cm was charged with 5.18 g of a mixture of phenol and hexamethylbenzene in a molar ratio of 5.25: 1 and 1.13 g (22.5 wt.%) Of industrial ball silica-alumina (fraction 1.6-2, 5 mm), hydrogen is supplied to a pressure of 7 at and the reaction mixture is heated to 400-425 ° C (the maximum pressure in the autoclave is 29 atT (). The reaction is carried out for 1 h, after which the reaction mixture is cooled, the pressure is reduced in the autoclave) The catalyst is filtered off. The yield of catalyzate 5.06 g, (97.6%), the yield of cresols is 78.3%, the selectivity for phenol is 80.8%, and for hexamethyl benzene is 90.3%.

В таблице приведены выход крезолов, конверси  реагентов и селективность процесса, проведенного а аналогичных услови х.The table shows the yield of cresols, the conversion of the reagents and the selectivity of the process carried out under similar conditions.

692825692825

.00.00

0000

.-1 Ч.-1 H

§§

S; S;S; S;

Ю1Л1ЛЮU1L1LYU

Tf rt  Tf rt

r- -r- -

5692825656928256

Claims (1)

Формула изобретени попиметилбензола используют гексаметилбензоЛHexamethylbenzoL is used in the invention of popimethylbenzene. Способ получени  крезолов путем алкилиро-нол:гексаметш1беизол 3-10:1.The method of producing cresols by alkylir-nol: hexameric1 isoisol 3-10: 1. вани  фенола поЛиметилбензолами при 400- vanilla phenol polymethylbenzenes at 400- в присутствии алюмосиликатного ката- 5Источники информации, in the presence of an aluminosilicate kata- 5 Sources of information, лизатора о т л и ч а ю ш и и с   тем,пр«н тые во вн,««е при зкспутизеof the lysar and with that, right "nty in vn," "e at an exercise что, с целью повышени  выхода целевых про-1- Патент США N 3518317. кл. 260-621, дуктов и селективности процесса, в качествеопублик, 1970 (прототип).that, in order to increase the yield of the target pro-1- U.S. Patent No. 3,518,317. 260-621, duct and process selectivity, as a public, 1970 (prototype). и процесс ведут при мольиом отио шении феand the process is carried out with molyom oto shenie fe
SU782623969A 1978-06-02 1978-06-02 Method of preparing cresols SU692825A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU782623969A SU692825A1 (en) 1978-06-02 1978-06-02 Method of preparing cresols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782623969A SU692825A1 (en) 1978-06-02 1978-06-02 Method of preparing cresols

Publications (1)

Publication Number Publication Date
SU692825A1 true SU692825A1 (en) 1979-10-25

Family

ID=20768174

Family Applications (1)

Application Number Title Priority Date Filing Date
SU782623969A SU692825A1 (en) 1978-06-02 1978-06-02 Method of preparing cresols

Country Status (1)

Country Link
SU (1) SU692825A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4532368A (en) * 1984-02-01 1985-07-30 Ethyl Corporation Process for making meta- and para-alkylphenols
US4927979A (en) * 1987-12-18 1990-05-22 Maruzen Petrochemical Co., Ltd. Process for the preparation of p-ethylphenol

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4532368A (en) * 1984-02-01 1985-07-30 Ethyl Corporation Process for making meta- and para-alkylphenols
US4927979A (en) * 1987-12-18 1990-05-22 Maruzen Petrochemical Co., Ltd. Process for the preparation of p-ethylphenol

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