Kakaretso:

Dimethyl carbonate, e tsejoang e le DMC, ke mokelikeli o se nang 'mala, o bonaletsang o nang le monko o bohale mochesong oa kamore. Bongata bo lekanyelitsoeng (d204) ke 1.0694, ntlha ea ho qhibiliha ke 4℃, ntlha ea ho belisa ke 90.3℃, 'me ntlha ea flash ke 21.7℃ (ho bula) 16.7℃ (Molomo o koetsoeng), refractive index (nd2Chemicalbook0)1.3687, e tukang, ha e na chefo. E ka kopanngoa le hoo e ka bang metsoako eohle ea tlhaho e kang alcohols, ketones, le li-ester ka tekanyo efe kapa efe, 'me e qhibiliha hanyane ka metsing. E ka sebelisoa e le reagent ea methylating. Ha e bapisoa le li-reagent tse ling tsa methylating, tse kang methyl iodide le dimethyl sulfate, dimethyl carbonate ha e na chefo e ngata ebile ha e bola.

Thepa ea Lik'hemik'hale

Mokelikeli o se nang 'mala le o bonaletsang o nang le monko o bohale. Ha o qhibilihe ka metsing, o qhibiliha ka har'a metsoako ea lintho tse phelang e kang ethanol le ether.

sebelisa

1. Mofuta o mocha oa tharollo e nang le chefo e tlase o ka nka sebaka sa toluene, xylene, ethyl acetate, butyl acetate, acetone kapa methyl ethyl ketone le li-solvent tse ling indastering ea pente le sekhomaretsi. Ke sehlahisoa sa lik'hemik'hale tse tala tse sireletsang tikoloho.

2. Moemeli o motle oa methylating, moemeli oa carbonylating, moemeli oa hydroxymethylating le moemeli oa methoxylating. E sebelisoa haholo masimong a li-antioxidants tsa lijo, metsoako ea tšireletso ea limela le masimong a mang. Ke thepa e tala ea lik'hemik'hale e sebelisoang haholo.

3. Sebaka se setle sa lik'hemik'hale tse chefo haholo tse kang phosgene, dimethyl sulfate, Chemicalbook methyl chloroformate, jj.

4. Synthesize polycarbonate, diphenyl carbonate, isocyanate, jj.

5. Bongaka, e sebelisetsoa ho kopanya meriana e thibelang tšoaetso, meriana e thibelang ho ruruha le e kokobetsang bohloko, meriana ea livithamine le meriana ea tsamaiso ea methapo e bohareng.

6. Ha ho tluoa tabeng ea chefo e bolaeang likokoanyana, e sebelisoa haholo ho hlahisa methyl isocyanate, ebe e hlahisa meriana e itseng ea carbamate le chefo e bolaeang likokoanyana (anisole).

7. Lisebelisoa tsa peterole, electrolyte ea betri ea lithium, jj.

Mokhoa oa tlhahiso o fumanoa ka ho kopanya methyl chloroformate le methanol. Methyl chloroformate ea thepa e tala e sebelisoang karabelong e fumanoa ka ho kopanya methanol le phosgene. Nakong ea ho lokisetsa, sehlahisoa sena sa phosgenation se ka boela sa etsoa ka ho eketsa methanol e ngata le ho khutlisetsa karabelo ntle le karohano ho kopanya dimethyl carbonate. Karabelo e ka holimo e bitsoa mokhoa oa setso oa phosgene ho Chemicalbook. Mokhoa oa transesterification o kenyelletsa karabelo ea transesterification pakeng tsa ethylene carbonate kapa propylene carbonate le methanol ho hlahisa dimethyl carbonate. Mokhoa ona o na le chai e phahameng, lisebelisoa tse senyang tse tlase, le maemo a bobebe a karabelo. Leha ho le joalo, mohloli oa thepa e tala o thibetsoe ke nts'etsopele ea indasteri ea petrochemical 'me sekhahla sa tšebeliso ea element se tlase.

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