He aha ke ʻano acetylene no ka hoʻomākaukau ʻana i ka maleic anhydride mai 1,4-butanediol?

ʻO ke ʻano hana Acetylene no 1,4ka hoʻomākaukau ʻana o ka -butanediol o ka maleic anhydride.

ʻO ka mea mua, hana ka acetylene me ka formaldehyde i ke alo o kahi mea hoʻoulu Cu-Bi ma 98kPa a me 80-95°C e hana i ka 1,4-butynediol. A laila, ua hydrogenated ʻia ka 1,4-butynediol i loko o 1,4-butenediol ma lalo o ka catalysis o ka nickel skeletal ma 1.372-2.06MPa a me 50-60°C. A laila, hana hou ʻia ka hydrogenation catalytic (13.7-20.6MPa, 120-140°C) me Ni-Cu-Mn/Al₂O₃ e hana i ka 1,4-butanediol. Ma hope o ka wehe ʻana i nā ion metala ma o ka resin hoʻololi ion, loaʻa ka 1,4-butanediol maʻemaʻe ma o ka distillation a me ka hoʻomaʻemaʻe ʻana.

No ke aha e koho ai i ka Maleic Anhydride? ʻO ia ke kumu o nā resins polyester unsaturated kiʻekiʻe, a wehe pū ia i nā kemika like ʻole ma hope (BDO, THF, a pēlā aku). E leka mai iā mākou i kēia manawa e ʻimi i nā hoʻonā MA i hana kūikawā ʻia no kāu ʻoihana!