SU430581A1 - Catalyst for olygomerization and co-olygomerization of olefins - Google Patents

Description

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This invention relates to catalysts for the oligomerization of olefites.

A known catalytic system that initiates the polymerization of olefins and diolefins, such as styrene, butadiene, consists of an activated metal and organic halogen. Ni, Co, Cu, and others are used as the metal, and compounds of the general formula

Rrp m n where R is an organic radical,

example

CCS, CBff, CgHjCH Bi, CH-CMSH B

However, this catalyst is not sufficiently active for the oligomerization of olefins.

In order to increase the catalyst activity of the proposed method, metal aluminum is used in combination with carbon tetrachloride (CCt) as a catalyst for the oligomerization and co-oligomerization of olefins.

Metal aluminum is fed to the reaction zone in the form of aluminum powder, aluminum chips, aluminum disk, etc., and

dissolved in nonane, hexane, heptane, octane, etc., or in the olefin itself. Low molecular weight olefins, normal and isostrate, are used as olefins.

The oligomerization process is carried out at 80-300 ° C and 15-45 atm, preferably at 35-40 atm. The reaction rate is controlled by the amount of CCt.

0 fed to the reaction zone.

Products of oligomerization and co-oligomercation are hydrocarbons with so-called bales. 30-500С from dinar to oligomer with moles weighing up to 500 and

5 above, which can be used as high-quality motor fuels and lubricants.

The proposed catalyst is easy to prepare and use. The average consumption of aluminum is 0.01–0.02% per kg in order to obtain my product. Aluminum can be used many times to complete consumption.

five

In oligomerization, a small amount of CCl is consumed (about 1% to the obtained product). In the products oligomeriamide does not contain chlorine atoms. This is subject to; the results of elementary analysis

And infrared spectroscopic data. Thus, in the spectra of all fractions obtained in the process of oligomerization, there are no intense absorption bands at 570 cm.C.S.S.), 615 (R.CHCO and 656 cm- (R-G% ce) ..

Example 1. The process of oligomerization of ethylene is carried out in a 1.5-liter, glandless autoclave. An aluminum metal in the form of a disk weighing 50 g is attached to an autoclave mixer equipped with a thermocouple pocket with a tube for introducing ethylene and SSY. Then the autoclave is thoroughly purged for 1-1.5 hours with ethylene

180-200 C and cool to the temperature of the experiment (), pour 227 g of dried nonane with dissolved CCe in it, (b g) and supply ethylene to 40 atm. After 60-70 minutes (induction period), the pressure in the autoclave is reduced to 5. To maintain the pressure, a fresh portion of ethylene is supplied to the reaction zone. The duration of an email is 90 minutes. After completing the test, the auto claves are cooled to room temperature and opened. The resulting reaction mixture in the amount of 832 g is subjected to distillation. The fractions obtained and their physicochemical constants are given in Table. one.

T a b l

a 1

f

; Fraction 1 contains 227 g of solvent (nonane). As a result of this reaction, the weight of the aluminum disk is reduced by 0.1 g.

Example 2. The process of oligomerization of propylene is carried out analogously to example 1. To the autoclave 227 g of dried nonane is charged with CCe4 () dissolved in it and 190 g of liquid propylene are fed. The autoclave is heated to 200C, while the pressure in it reaches 30 atm. After 15 minutes, the pressure in the autoclave begins to fall, which indicates the beginning of the experiment. The duration of the experiment 30 minutes The resulting reaction mixture in an amount of 400 g is subjected to distillation. The fractions obtained and their physicochemical constants are given in Table. 2., Table2

Froze The co-oligomerization process is carried out analogously to example 1. Ethylene and propylene are taken as olefin. The autoclave was charged with 227 g of nonane with dissolved CCC in it (6 g). Then, 180 g of liquid propylene is fed into the autoclave, heated to 200 ° C, at which temperature the pressure in it is reached. Chromatographic analysis of the fraction with m.p. 30-80 ° C shows the presence of isomers of Hilylene, which confirms the progress of the cooligomerization reaction. Example 4. The oligomerization process is carried out analogously to the example. but. isobutylene is used as olefins. In the autoclave load 221 g of nonane with dissolved CCit (b g). Then, 200 g of liquefied isobutylene are fed into the autoclave, after which the temperature in it is raised to, the pressure is reached 25 atm.

em OOATM Then ethylene is fed to 40 atm. After 10 minutes, the pressure in the autoclave drops. It is supported by feeding fresh ethylene. Experiment duration 40 min. The resulting reaction mixture 650 g is subjected to distillation. The fractions obtained and their phyico-chemical constants are given in Table. 3

Claims (1)

Table 3 reaction 20 min. The resulting reaction mixture in the amount of 427 g is subjected to distillation. The reaction product has T-. kip 8 O-5 O OS. Claims The catalyst for oligomerization and co-oligomerization of olefins, consisting of metal-system.