Ngwaahịa
Ọpụrụiche na mmepụta nke mmanya propargyl, 1,4 butynediol na 3-chloropropyne.
1,4-butanediol (BDO) na nkwadebe ya nke PBAT plastic biodegradable
Okwu mmalite
1, 4-butanediol (BDO);PBAT bụ plastik biodegradable thermoplastic, nke bụ copolymer nke butanediol adipate na butanediol terephthalate.Ọ nwere njirimara nke PBA (polyadipate-1, 4-butanediol ester diol) na PBT (polybutanediol terephthalate).Ọ nwere ezigbo ductility na elongation na nkwụsịtụ, yana ezigbo nkwụsị ọkụ na mmetụta mmetụta.Tụkwasị na nke ahụ, ọ nwere ezigbo ihe ndị dị ndụ ma bụrụ otu n'ime ihe ndị a na-ewu ewu na-emepụta ihe na-eme nchọpụta nke plastik na-emepụta ihe na ngwa kachasị mma n'ahịa.
Ihe na-esonụ bụ ihe mejupụtara nke PBAT polymer yinye ngalaba:
Achọpụtala mmepụta mmepụta ihe nke 1, 4-butanediol na usoro isi anọ.
1. Usoro Aldehyde (usoro Reppe): mbụ acetylene na formaldehyde na ọnụnọ Cu-BI na-eme ka 1, 4-butynediol.A na-emewanye hydrogenated na 1, 4-butenediol site na nickel skeleton, sochiri Ni-Cu-Mn/Al2O3 ruo 1, 4-butanediol.
2. Maleic anhydride hydrogenation: a na-ekekwa ya n'ime maleic anhydride esterification hydrogenation na maleic anhydride kpọmkwem hydrogenation.
3. Usoro Butadiene: site na 1, 3-butadiene na acetic acid na oxygen acetyl oxidation mmeghachi omume, na-emepụta 1, 4-diacetyloxy-2-butadiene, na mgbe ahụ hydrogenation, hydrolysis.
4. usoro propylene oxide (usoro mmanya allyl): propylene oxide dị ka akụrụngwa, catalytic isomerization n'ime allyl mmanya, na organic phosphine ligand catalyst n'okpuru omume nke hydroformylation mmeghachi omume n'ịwa isi ngwaahịa γ-hydroxypropanal, na mgbe mmịpụta, hydrogenation, refining. iji nweta BDO.
Usoro Reppe bụ usoro ọdịnala iji mepụta BDO, nke dabere na acetylene na formaldehyde dị ka akụrụngwa, njikọ na hydrogenation nke nzọụkwụ abụọ iji mepụta BDO: ① acetylene na formaldehyde mmeghachi omume iji mepụta 1, 4-butynediol na propargyl mmanya dị ka ihe sitere na ngwaahịa. ;②1, 4-butanediol bụ hydrogenated ka ọ bụrụ 1, 4-butanediol.
Nkwadebe acetylene nwere [ụzọ gas / mmanụ mmanụ] na [ụzọ coal]: ojiji nke coke na nkume limestone na nnukwu ọkụ ọkụ na-emepụta calcium carbide, calcium carbide na mmiri mmeghachi omume iji mepụta acetylene;A na-emepụta acetylene site na gas ma ọ bụ mmanụ site na akụkụ oxidation nke methane.
