SU352868A1 - METHOD OF OBTAINING ALKYLPHENOLS | ^^ SHPSH. ^ NAI ^^; :: -.-! ^ 8LIOT |? KA '/ - Google Patents

Description

This invention relates to the preparation of myoalkylphenols of various molecular weights, which can be used to synthesize motor oils, herbicides and other minerals based on them.

P1zvestei is a method for producing alkylphenols by alkylating phenol with olefinic hydrocarbons, iairimer Xu and Xu, at a temperature of 180-210 ° C in the presence of a deOolitic catalyst of type Well and ReX at a higher pressure, followed by separation of the product with known irriems.

For the purpose of obtaining myo-ort-substituted phenols, which are of the greatest importance as nitro-mers and products for synthesis on their axes, zeolites of the Y type in decaturated, Ca and Mg cationic forms are used as the zeolite catalyst. At the same time, it is better to conduct the process with temperature of 100-260 ° С, pressure up to 10 atm or atmospheric pressure and with a space velocity from 0.2 to 1.0 hour.

Zeolithium catalyst is a solid granules, which are activated prior to the calcination reaction at a temperature of 450-500 ° C. The catalyst is regenerated by burning the coke, after which the catalyst activity is restored.

The process can be carried out both under iodiodic conditions and in a stream on a continuously operating installation.

As a motive agent, as well as branched olefinic hydrocarbons, various molecular weight and technical fractions of olefins can serve as an alkylating agent.

The alkylation of phenol with olefins under these conditions allows an output of alkylphenols of 70-80 wt. %

Example 1. Alkylation of feiol is driven by the α-olefies of mol. weight 220 on a laboratory continuous installation.

The molar ratio of phenol and olefins is 1.1: 1, the reaction temperature is 220 ° C, the pressure is atmospheric, the volumetric rate is 0.5 W / d.

Catalyst - decatilated zeolite tiaa Y, binder - A12Oz in the amount of 18 wt. %

The reaction products are dispersed in a laboratory column. The output of alkylphenols 75 weight. % Alkylphenols are boiled in the temperature range of 360-500 ° C and, according to the results of their study, the IR spectrum method is a mixture of mono- and disubstituted phenols with a predominance of monoalkylphenols. 3 d t in a laboratory setup nrotoin)) type. The molar ratio of phenol and olsfin is 1.1: 1, the reaction temperature is 220 ° C, the pressure is 1 atm, the volume velocity is 0.5. Catalyst - Sau or dekatnonirovanny 5 type Y zeolite of semi-production. The reaction products are dispersed on a laboratory column. The yield of alkylphenols is 60 N 75 wt. % on the appropriate catalyst .10 Targeted alkylphenols eject at 360-500 ° C at temperatures and according to their results using the IR spectrum method are a mixture of mono- and disamenhenic phenols with a predominance of mono-ortho-substituted scoops. 4 Subject and information about i and e. 1. The method of producing alkylphenols by the alkylation of phenols with olefinic hydrocarbons at elevated temperatures in the presence of a zeolite catalyst and the isolation of the target product is known in the art, in order to obtain mono-ort-substituted zeolite catalysts are used Y-type zeolites, taken in decaturated, C a and Mg cationic forms. 2. The method according to n. 1, characterized in that the process is carried out at a temperature of 100-260 ° C, a pressure of up to 10 atm and a space velocity of from 0.2 to 0.