Kedu usoro acetylene maka ịkwadebe maleic anhydride site na 1,4-butanediol?

Usoro acetylene maka 1,4- nkwadebe butanediol nke maleic anhydride.

Nke mbụ, acetylene na-emeghachi omume na formaldehyde n'ihu ihe na-akpali Cu-Bi na 98kPa na 80-95°C iji mepụta 1,4-butynediol. Mgbe ahụ, a na-etinye 1,4-butynediol na hydrogen ka ọ bụrụ 1,4-butenediol n'okpuru catalysis nke nickel ọkpụkpụ na 1.372-2.06MPa na 50-60°C. Na-esote, a na-eji Ni-Cu-Mn/Al₂O₃ eme hydrogenation catalytic ọzọ (13.7-20.6MPa, 120-140°C) iji mepụta 1,4-butanediol. Mgbe ewepụsịrị ion metal site na resin mgbanwe ion, a na-enweta 1,4-butanediol dị ọcha site na distillation na sachapụ.

Gịnị mere ị ga-eji họrọ Maleic Anhydride? Ọ bụ isi ihe dị na resin polyester nke na-enweghị afọ ojuju, yana ọ na-emepe ọtụtụ kemịkalụ dị iche iche (BDO, THF, wdg). Zitere anyị ozi ugbu a ka anyị chọpụta ngwọta MA ahaziri maka azụmahịa gị!