Wetin na di asetilɛn we fɔ pripia maleik anhaydrayd frɔm 1,4-butanediol?
2. 2.025-12-08
Asetilɛn we fɔ 1, .4-Butanediol we gɛt di sik pripiamɛnt fɔ maleik anhaydrayd.
fכs, asetilεn de riak wit fכmaldehayd insay di prεsεns fכ wan Cu-Bi katalis na 98kPa εn 80-95°C fכ prodyuz 1,4-butynediol. afta dat, 1,4-butynediol de haydrojen insay 1,4-butenediol כnda di katalis fכ skel nikεl na 1.372-2.06MPa εn 50-60°C. Neks, fכda katalytik haydrojeneshכn (13.7-20.6MPa, 120-140°C) de kכriכnt wit Ni-Cu-Mn/Al2O3 fכ fכm 1,4-butanediol. Afta we dɛn pul mɛtal ayɔn dɛn tru ayɔn ɛkshɛnj rɛsin, dɛn kin gɛt klin 1,4-butanediol bay distileshɔn ɛn purifyeshɔn.