I-N-Methylmorpholine N-Oxide (NMMO)

I-N-Methylmorpholine N-Oxide (NMMO) iyi-heterocyclic amine oxide enemisebenzi eminingi eyaziwa kabanzi ngezindawo zayo ezinhle kakhulu zokuncibilikisa, ikakhulukazi ekuncibilikiseni i-cellulose ngaphandle kokuphuma kwamakhemikhali. Le nhlanganisela ye-organic isebenza njenge-reagent eyinhloko ku-organic synthesis futhi iyincibilikisi eyinhloko enqubweni ye-Lyocell ehambisana nemvelo yokukhiqiza imicu ye-cellulose evuselelwe njengeLyocell.

Imininingwane Yezobuchwepheshe

IZINTO	IMINININGWANE (OKUQINILE)	IMINININGWANE (LIQUID)
Ukubukeka	I-Crystalline Powder Emhlophe	Uketshezi olubonisa ngale olungenambala ukuya kokuphuzi kancane
Isivivinyo	94%	50%

Izici Ezibalulekile Nezinzuzo ze-N-Methylmorpholine N-Oxide (NMMO)

I-Direct Cellulose Solvent:

Incibilikisa i-cellulose kahle ngaphandle kokuphuma kokunye, ivumela ukukhiqizwa kwefayibha esimeme.

Ayihambisani nemvelo:

Ukungaguquguquki okuphansi kanye nokuphinda kusetshenziswe kabusha okuphezulu kwenza i-NMMO ibe isincibilikisi esithandwayo ezinqubweni zokukhiqiza eziluhlaza.

Ukuzinza Kwamakhemikhali Okuphezulu:

Ifanele izinga lokushisa eliphezulu kanye nezindawo zokucubungula zezimboni.I-Excellent Solvency:Isebenza kahle ku-cellulose, i-hemicellulose, nama-polymers athile.

Izinhlelo Ezihlukahlukene:

Isetshenziswa kuzo zonke izindwangu, imithi, ukuhlanganiswa kwamakhemikhali, nocwaningo lwezemfundo.

Izicelo Eziyinhloko ze-N-Methylmorpholine N-Oxide (NMMO)

Imboni Yezindwangu (Inqubo yeLyocell):

I-NMMO iyisici esiyinhloko ekukhiqizeni imicu ye-Lyocell, enye indlela eqhubekayo ye-viscose rayon. Incibilikisa i-cellulose pulp ukwenza isixazululo 'dope', esikhishwa futhi senziwa kabusha kubhavu wamanzi. Inqubo ivaliwe, ithola ngaphezu kwama-99% we-solvent, inciphisa umthelela wemvelo.

I-Organic Synthesis:

Isebenza njenge-co-oxidant ye-stoichiometric ekuphenduleni okufana ne-osmium tetroxide-catalyzed dihydroxylation (inqubo ye-Upjohn), i-Sharpless asymmetric dihydroxylation, kanye nama-oxidation e-TPAP.

I-Biomass Pretreatment:

Isetshenziselwa ukuncibilikisa i-lignocellulosic materials and scleroproteins.Okunye Ukusetshenziswa:I-Catalyst in silylcynation of aldehydes/ketones and foaming agent kumapulasitiki e-polyester.

Imibuzo Evame Ukubuzwa (FAQs)

Q: Iyini i-N-Methylmorpholine N-Oxide (NMMO)?

A: I-NMMO iyinhlanganisela ye-organic amine oxide esetshenziswa ngokuyinhloko njenge-solvent ye-cellulose kunqubo yokukhiqiza i-Lyocell fiber nanjenge-co-oxidant ekuphenduleni kwamakhemikhali e-organic.

Q: Isebenza kanjani i-NMMO kunqubo ye-Lyocell? 

A: I-NMMO incibilikisa i-cellulose pulp ngokuqondile (ngaphandle kokukhishwa kwe-derivatization) ngokuphula amabhondi e-hydrogen e-intermolecular, yakhe i-viscous dope. Le dope iphothwa ibe imicu futhi ivuselelwe emanzini okugeza, futhi i-NMMO itholakele futhi yasetshenziswa kabusha.

Q: Ingabe i-NMMO ihlinzekwa njengesiqinile noma isixazululo?

IMP: I-NMMO ivamise ukunikezwa njengesiqinile noma njengesixazululo esinamanzi (imvamisa engu-50–60%), kuye ngezidingo zekhasimende.

Umbuzo: Ingabe i-NMMO ihambisana nemvelo?

A: Yebo. I-NMMO ithathwa njengesinyibilikisi esiluhlaza ngoba ingatholwa futhi igaywe kabusha ngamanani aphezulu futhi ayidingi ukukhishwa kwamakhemikhali ku-cellulose.

Q: Kufanele igcinwe kanjani i-NMMO?

IMPENDULO: Kufanele igcinwe endaweni epholile, eyomile, evikelekile emazingeni omswakama kanye nelanga eliqondile, neziqukathi zivalwe ngokuqinile.

Q: Kungani ukhetha i-NMMO kunezinye izinyibilikisi ze-cellulose?

A: Ivumela ukuchithwa okuqondile kwe-cellulose, kunika amandla ukutholakala kwe-solvent ephezulu, futhi isekela ukukhiqizwa okusimeme, okungenabuthi kwemicu yekhwalithi ephezulu evuselelwe.

Xhumana nathi

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