Ni ubuhe buryo bwa acetylene bwo gutegura anhidride ya maleiki ikomoka kuri 1,4-butanediol?

Uburyo bwa asetilini kuri 1,4-gutegura butanediol ya anhydride ya maleic.

Ubwa mbere, acetylene ihura na formaldehyde imbere ya Cu-Bi catalyst kuri 98kPa na 80-95°C igatanga 1,4-butynediol. Hanyuma, 1,4-butynediol ishyirwamo hydrogene muri 1,4-butenediol munsi ya catalysis ya nickel y'amagufwa kuri 1.372-2.06MPa na 50-60°C. Hanyuma, hakorwa indi catalytic hydrogenation (13.7-20.6MPa, 120-140°C) hamwe na Ni-Cu-Mn/Al₂O₃ kugira ngo habeho 1,4-butanediol. Nyuma yo gukuraho iyoni z'icyuma binyuze muri ion exchange resin, 1,4-butanediol nziza iboneka binyuze mu kuyungurura no gutunganya.

Kuki wahitamo Maleic Anhydride? Ni inkingi y'amaresini ya polyester adafite ubushyuhe bwinshi, kandi ifunguye imiti itandukanye (BDO, THF, nibindi). Twoherereze ubutumwa ubu kugira ngo ushakishe ibisubizo bya MA byagenewe ubucuruzi bwawe!