Awọn ọja
Amọja ni iṣelọpọ ti ọti propargyl, 1,4 butynediol ati 3-chloropropyne
1,4-butanediol (BDO) ati igbaradi ti pilasitik biodegradable PBAT
Ifaara
1, 4-butanediol (BDO);PBAT jẹ pilasitik biodegradable thermoplastic, eyiti o jẹ copolymer ti butanediol adipate ati butanediol terephthalate.O ni awọn abuda ti PBA (polyadipate-1, 4-butanediol ester diol) ati PBT (polybutanediol terephthalate).O ni ductility ti o dara ati elongation ni isinmi, bakanna bi resistance ooru ti o dara ati iṣẹ ipa.Ni afikun, o ni awọn ohun elo ti o dara julọ ti o dara julọ ati pe o jẹ ọkan ninu awọn ohun elo ti o gbajumo julọ ni iwadi ti awọn pilasitik ti o dara julọ ati ohun elo ti o dara julọ ni ọja naa.
Atẹle ni akopọ ti awọn apa pq polima PBAT:
Iṣelọpọ ile-iṣẹ ti 1, 4-butanediol ti ni imuse ni awọn ilana akọkọ mẹrin.
1. Ọna Aldehyde (ọna Reppe): akọkọ acetylene ati formaldehyde ni iwaju Cu-BI catalyst lati ṣe 1, 4-butynediol.Igbẹhin naa jẹ hydrogenated siwaju si 1, 4-butenediol nipasẹ nickel skeleton, atẹle nipa Ni-Cu-Mn/Al2O3 si 1, 4-butanediol.
2. Maleic anhydride hydrogenation: o tun pin si maleic anhydride esterification hydrogenation ati maleic anhydride hydrogenation taara.
3. Ọna Butadiene: lati 1, 3-butadiene ati acetic acid ati atẹgun acetyl oxidation reaction, lati ṣe 1, 4-diacetyloxy-2-butadiene, ati lẹhinna hydrogenation, hydrolysis.
4. ọna propylene oxide (ọna allyl oti): propylene oxide bi aise ohun elo, catalytic isomerization sinu allyl oti, ni Organic phosphine ligand ayase labẹ awọn iṣẹ ti hydroformylation lenu lati se ina akọkọ ọja γ-hydroxypropanal, ati ki o si isediwon, hydrogenation, refining. lati gba BDO.
Ọna Reppe jẹ ọna ibile lati ṣe agbejade BDO, eyiti o da lori acetylene ati formaldehyde bi awọn ohun elo aise, iṣelọpọ ati hydrogenation ti awọn igbesẹ meji lati ṣe ipilẹṣẹ BDO: ① acetylene ati iṣesi formaldehyde lati ṣe agbejade 1, 4-butynediol ati ọti propargyl bi ọja nipasẹ ọja. ;②1, 4-butanediol jẹ hydrogenated lati dagba 1, 4-butanediol.
Igbaradi acetylene ni [gaasi adayeba / ipa ọna epo] ati [ọna-ọna edu]: lilo coke ati limestone ni ileru otutu ti o ga julọ lati ṣe agbekalẹ carbide kalisiomu, carbide calcium ati ifa omi lati ṣe ina acetylene;Acetylene jẹ iṣelọpọ lati gaasi adayeba tabi epo nipasẹ ifoyina apa kan ti methane.
