RU1795963C - Method of vinyl chloride synthesis - Google Patents

Description

175 ml of Na2PdCU in 45 ml of M-methylpyrrolidone (0.38% by weight of M-methylpyrrolidone). Hydrogen chloride in an amount of 7.2 l / h and acetylene in an amount of 5.9 l / h are combined in front of the reactor, mixed and a catalyst solution heated to 150 ° C is supplied from below (coolant in the outer jacket). The gaseous product exiting the reactor is analyzed by gas chromatography. The acetylene conversion is 99.7% with a vinyl chloride selectivity of 98.3%. The output per unit volume per unit time is 358 g of vinyl chloride / l-h.

Almost the same yield is achieved when the process is carried out in the presence of palladium (II) chloride, palladium (II) acetate, palladium acetylacetonate, K2 (PdCl4), bis (triphenylphosphine) palladium (II) chloride as a catalyst.

Example 2. Repeat example 1 with the difference that the reaction is carried out using 11.25 l / h acetylene and 11.25 l / h hydrogen chloride at a temperature of 120 ° C in the presence of 150 mg of PdCte dissolved in 38 ml of NN-dimethylformamide (0.39% by weight of NN-dimethylformamide). The conversion of acetylene is 80%. the selectivity is 98.7%, and the output per unit volume per unit time is 652 g of vinyl chloride / l-h.

Almost the same yield is achieved by carrying out the process in the presence of palladium (II) chloride as a catalyst. palladium (II) acetate. palladium acetylacetonate, K2 (PdCbj).

Example 3. Example 2 is repeated with the difference that 5.9 l / h of acetylene and 7.2 l / h of hydrogen chloride are used. The conversion is 94.7%, the selectivity is 98.9%, and the output per unit volume per unit time is 405 g of vinyl chloride / l-h. .

Almost the same yield is achieved when the process is carried out in the presence of palladium (II) chloride, palladium (II) acetate, palladium acetylacetonate, KaJPdCM as a catalyst.

Example 4. Example 1 was repeated with the difference that the reaction was carried out using 13 l / h of acetylene and 14.3 l / h of hydrogen chloride in the presence of 21 ml of N-methylpyrrolidone in which 4.7 g of PdCl2 was dissolved (0.47% by weight of N-methylpyrrolidone). The conversion of acetylene is 96.0%, the selectivity for the formation of vinyl chloride is 98.8%, and the output per unit volume per unit time is 1638 g

vinyl chloride / lh

Almost the same yield is achieved when the process is carried out in the presence of palladium (II) acetate, Na (PdCU), K2 (PdCI4 as a catalyst)

Example 5 Example 4 is repeated, with the difference that the reaction is carried out using 12.5 l / h of acetylene and 15 l / h of hydrogen chloride in the presence of 3 g (0.3% by weight of N-methylpyrrolidone). The acetylene conversion is 89.5%, the vinyl chloride selectivity is 98.7%, and the yield per unit volume per unit time is 1467 g of vinyl chloride / l -h.

Almost the same yield is achieved when the process is carried out in the presence of palladium (II) acetate, Na (PdCbi), K2 (PdCU) as a catalyst.

Example 6. Repeat example 1 with the

the difference is that the reaction is carried out using 13 l / h of acetylene and 15.2 l / h of hydrogen chloride at a temperature of 148 ° C in the presence of 30 ml of 1X1-methylpyrrolidone in which 4 g of PdCte / l is dissolved

(0.4% by weight of N-methylpyrrolidone). The conversion of acetylene is 95.9%, the selectivity for the formation of vinyl chloride is 99.2%, and the yield per unit volume per unit time is 1150 g of vinyl chloride / l-h.

Almost the same yield is achieved when the process is carried out in the presence of palladium (II) chloride, palladium (II) acetate, acetylacetonate as a catalyst

Palladium K2 (PdCI4

Example 7 If Example 6 is repeated with the difference that the reaction is carried out using 12 l / h of acetylene and 14.4 l / h of hydrogen chloride at a temperature of 160 ° C. in the presence of 4.9 g (0.49% of mass of N-methylpyrrolidone), the conversion of acetylene is 99.6%, the selectivity is 99.3%, and the output per unit volume per unit time is 1104 g of vinyl chloride / l-h,

Almost the same yield is achieved when the process is carried out in the presence of palladium (II) chloride, palladium (II) acetate, acetylacetonate as a catalyst

Palladium, K2 (PdCM).

Claims (1)

Formula of the invention, the yield of the target product per unit volume. The method of producing vinyl chloride by perme per unit time, as an organic interaction of acetylene with a solvent of a wax solvent at 120-160 ° C in the presence of pall-NN-dimethylformamide or an N-methylpyrroladium catalyst — palladium salt b5 lidone, the catalyst being taken in an amount of an organic solvent, about 0.3-0.49 wt.% based on wherein, in order to increase the solvent used.