1 Vinyl 2 Pyrrolidone 616-45-5

{{{0}}Pyrrolidone yog tsim muaj kev lag luam yuav luag tshwj xeeb los ntawm kev kho cov dej aqueous gamma-butyrolactone nrog ammonia ntawm qhov kub ntawm 250-290 degree thiab siab li ntawm 0.4-1.4 MPa tshaj cov khoom magnesium silicate catalysts.

Cov tshuaj tiv thaiv ntawm -butyrolactone nrog ammonia los ua 2-pyrrolidone (-butyrolactam) thiab dej nyob rau hauv muaj cov khoom magnesium silicate catalyst

Cov tshuaj tiv thaiv yog nqa tawm hauv tubular reactor uas tau ntim nrog cov khoom catalyst. Lub tom kawg yog teem raws li lub txaj ruaj thiab cov tshuaj tiv thaiv yog nqa tawm nyob rau hauv lub vapor theem. Cov khoom lag luam tawm los ntawm 75-85% mus txog. Tom qab distillation thiab purification tom qab, qhov xav tau 2-pyrrolidone tau nrog purity ntawm 99.5%.

Lwm txoj hauv kev muaj xws li catalytic lossis electrochemical txo ntawm succinimide, carbonylation ntawm allylamine, [4] hydrogenation ntawm succinonitrile nyob rau hauv hydrolytic tej yam kev mob, thiab cov tshuaj tiv thaiv ntawm maleic los yog succinic anhydride nyob rau hauv aqueous ammonia nrog Pd-Ru-catalysts.

Hauv xyoo 2010, qhov kev thov thoob ntiaj teb rau 2-pyrrolidone tau kwv yees yog 32.000 t. Cov tuam txhab tseem ceeb ntawm 2-pyrrolidone yog BASF thiab ISP (International Specialty Products, tam sim no Ashland Inc.).

Kev tsim tawm ntawm 2-pyrrolidone los ntawm hydrocyanic acid thiab acrylonitrile Hydrocyanic acid (HCN) reacts nrog acrylonitrile (AN) los tsim 2-pyrrolidone. Cov txheej txheem tshuaj tiv thaiv yog raws li nram no:

1) HCN thiab AN hnov ​​​​mob nrog triethylamine ua ib qho catalyst los tsim succinonitrile. Cov tshuaj tiv thaiv yog nqa tawm ntawm atmospheric siab thiab txog 70 degree, thiab cov yield ntawm succinonitrile yog siab li 97%.

2) Succinonitrile yog ib nrab hydrogenated rau aminobutyronitrile. Cov tshuaj tiv thaiv siv nickel ua hydrogenation catalyst, tag nrho lub siab ntawm 14.0 MPa, kub ntawm 80 ~ 100 degree , thiab kua ammonia ua kuab tshuaj. Kev hloov pauv ntawm succinonitrile yog ze rau 100%, thiab qhov kev xaiv ntawm aminobutyronitrile yog 85%.

-aminobutyronitrile tau dhau los ua hydrolysis thiab cyclization los tsim 2-pyrrolidone. Cov tshuaj tiv thaiv yog nqa tawm nyob rau hauv lub plug flow system ntawm qhov kub ntawm 210 degree. Qhov kev hloov pauv nitrile thiab cov khoom xaiv tau yog ob qho tib si ze rau 100%.

Cim npe nrov: 1 vinyl 2 pyrrolidone 616-45-5, Tuam Tshoj 1 yas 2 pyrrolidone 616-45-5 manufacturers, lwm tus neeg, Hoobkas