3 research outputs found
Optimization of the Composition of Cobalt Catalyst in the Process of Producing Propylpropionate from Ethylene
Π Π΄Π°Π½Π½ΠΎΠΉ ΡΠ°Π±ΠΎΡΠ΅ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅, Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½Π½ΠΎΠ΅ Π½Π° ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΡ ΡΠΎΡΡΠ°Π²Π° ΠΊΠ°ΡΠ°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Co2(CO)8: ΠΏΡΠΎΠΌΠΎΡΠΎΡ Π΄Π»Ρ ΡΠ΅Π°ΠΊΡΠΈΠΈ ΠΊΠ°ΡΠ±ΠΎΠ°Π»ΠΊΠΎΠΊΡΠΈΠ»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΡΠΈΠ»Π΅Π½Π° Ρ ΡΠ΅Π»ΡΡ ΠΌΠ°ΠΊΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ Π²ΡΡ
ΠΎΠ΄Π° ΠΈ ΡΠΈΡΡΠΎΡΡ ΠΏΡΠΎΠΏΠΈΠ»ΠΏΡΠΎΠΏΠΈΠΎΠ½Π°ΡΠ°. Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΏΡΠΎΠΌΠΎΡΠΎΡΠΎΠ² Π±ΡΠ»ΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ: ΠΏΠΈΡΠΈΠ΄ΠΈΠ½, Π΄ΠΈΠΌΠ΅ΡΠΈΠ»Π°Π½ΠΈΠ»ΠΈΠ½, ΡΡΠΈΡΡΠΈΠ»Π°ΠΌΠΈΠ½ ΠΈ Π΄ΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΈΠ½ΠΎΠΏΠΈΡΠΈΠ΄ΠΈΠ½. ΠΡΡΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ Π½Π°ΠΈΠ»ΡΡΡΠ΅ΠΉ ΠΊΠ°ΡΠ°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡΡ ΠΎΠ±Π»Π°Π΄Π°ΡΡ ΠΊΠ°ΡΠ°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΏΠΈΡΠΈΠ΄ΠΈΠ½Π° ΠΈ Π΄ΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΈΠ½ΠΎΠΏΠΈΡΠΈΠ΄ΠΈΠ½Π°. ΠΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ Π΄Π°Π½Π½ΡΡ
ΠΏΡΠΎΠΌΠΎΡΠΎΡΠΎΠ² ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ Π΄ΠΎΡΡΠΈΠ³Π½ΡΡΡ 97 % ΠΊΠΎΠ½Π²Π΅ΡΡΠΈΠΈ ΡΡΠΈΠ»Π΅Π½Π° ΠΏΡΠΈ ΡΠ΅Π»Π΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΠΎ ΡΠ΅Π»Π΅Π²ΠΎΠΌΡ ΠΏΡΠΎΠ΄ΡΠΊΡΡ β 95 ΠΈ 90 % Π΄Π»Ρ ΠΏΠΈΡΠΈΠ΄ΠΈΠ½Π° ΠΈ Π΄ΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΈΠ½ΠΎΠΏΠΈΡΠΈΠ΄ΠΈΠ½Π° ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ Π΄Π»Ρ ΠΊΠ°ΡΠ°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° Co2(CO)8: ΠΏΠΈΡΠΈΠ΄ΠΈΠ½ Π΄ΠΎΠ±Π°Π²Π»Π΅Π½ΠΈΠ΅ Π²ΠΎΠ΄ΠΎΡΠΎΠ΄Π° Π² ΡΠ΅Π°ΠΊΡΠΈΠΎΠ½Π½ΡΡ ΡΡΠ΅Π΄Ρ ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΡ ΠΊ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ Π²ΡΡ
ΠΎΠ΄Π° ΡΠ΅Π»Π΅Π²ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΄ΡΠΊΡΠ°, Π² ΡΠΎ Π²ΡΠ΅ΠΌΡ ΠΊΠ°ΠΊ Π΄Π»Ρ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° Co2(CO)8: Π΄ΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΈΠ½ΠΎΠΏΠΈΡΠΈΠ΄ΠΈΠ½ Π½Π°Π±Π»ΡΠ΄Π°Π΅ΡΡΡ ΠΎΠ±ΡΠ°ΡΠ½ΡΠΉ ΡΡΡΠ΅ΠΊΡ. ΠΡΠΎΠΌΠ΅ ΡΠΎΠ³ΠΎ, Π±ΡΠ»ΠΎ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΎ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΠΎΠ΅ ΡΠΎΠΎΡΠ½ΠΎΡΠ΅Π½ΠΈΠ΅ Π΄Π»Ρ ΠΊΠ°ΡΠ°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° Co2(CO)8: Π΄ΠΈΠΌΠ΅ΡΠΈΠ»Π°ΠΌΠΈΠ½ΠΎΠΏΠΈΡΠΈΠ΄ΠΈΠ½, ΠΊΠΎΡΠΎΡΠΎΠ΅ ΡΠΎΡΡΠ°Π²Π»ΡΠ΅Ρ 14:1, ΡΡΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ Π΄ΠΎΡΡΠΈΠ³Π½ΡΡΡ ΠΊΠΎΠ½Π²Π΅ΡΡΠΈΠΈ 93 % ΠΏΡΠΈ ΡΠ΅Π»Π΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΠΎ ΠΏΡΠΎΠΏΠΈΠ»ΠΏΡΠΎΠΏΠΈΠΎΠ½Π°ΡΡ 94 %This paper presents a study aimed at optimizing the composition of a Co2(CO)8: promoter catalytic complex for the ethylene carboalkoxylation reaction in order to maximize the yield and purity of propyl propionate. The following promoters were used: pyridine, dimethylaniline, triethylamine and dimethylaminopyridine. It was found that pyridine and dimethylaminopyridine have the highest catalytic activity. The use of these promoters makes it possible to achieve ethylene conversion of up to 97 % with selectivity for the target product equal to 95 % for pyridine and 90 % for dimethylaminopyridine. It was also found that for the catalytic system Co2(CO)8: pyridine the addition of hydrogen to the reaction stock leads to an increase in the target product yield, while for the catalytic system Co2(CO)8: dimethylaminopyridine, this activity leads to the opposite effect. In addition, the optimal ratio of the catalytic system Co2(CO)8: dimethylaminopyridine was determined to be 14:1. This ratio allows achieving a conversion of 94 % and selectivity for propyl propionate of 93