Dimethyl carbonate ndi organic pawiri ndi mankhwala chilinganizo C3H6O3.Ndi mankhwala opangira mankhwala omwe ali ndi kawopsedwe kakang'ono, zinthu zabwino kwambiri zotetezera chilengedwe ndi ntchito zosiyanasiyana.Ndikofunikira organic synthesis wapakatikati.Lili ndi makhalidwe a kuchepetsa kuipitsa ndi kuyenda mosavuta.Maonekedwe a dimethyl carbonate ndi madzi opanda mtundu ndi fungo lonunkhira;Kulemera kwa ma molekyulu ndi 90.078, osasungunuka m'madzi, osasungunuka m'madzi ambiri osungunulira, osakanikirana ndi ma acid ndi maziko.
Kugwiritsa ntchito dimethyl carbonate
(1) M'malo mwa phosgene ngati carbonylating agent
DMC ili ndi nucleophilic reaction center yofanana.Pamene gulu la carbonyl la DMC ligwidwa ndi nucleophile, mgwirizano wa acyl-oksijeni umasweka kuti upange kaphatikizidwe ka carbonyl, ndipo mankhwalawo ndi methanol.Choncho, DMC akhoza m'malo phosgene monga reagent otetezeka lithe carbonic acid zotumphukira., Polycarbonate idzakhala malo omwe amafunikira kwambiri DMC.
(2) M'malo mwa dimethyl sulfate ngati methylating agent
Pamene methyl carbon ya DMC ikuwukiridwa ndi nucleophile, mgwirizano wake wa alkyl-oksijeni umasweka, ndipo mankhwala a methylated amapangidwanso, ndipo zokolola za DMC zimakhala zapamwamba kuposa dimethyl sulfate, ndipo ndondomekoyi ndi yosavuta.Zomwe zimagwiritsidwa ntchito kwambiri zimaphatikizapo zopangira organic intermediates, mankhwala, mankhwala ophera tizilombo, etc.
(3) otsika kawopsedwe zosungunulira
DMC ali kwambiri solubility, yopapatiza kusungunuka ndi kuwira mfundo ranges, kukangana kwakukulu padziko, otsika mamasukidwe akayendedwe, otsika dielectric mosalekeza, mkulu evaporation kutentha ndi liwiro evaporation mlingo, kotero angagwiritsidwe ntchito ngati otsika poizoni zosungunulira kwa zokutira Industrial ndi mankhwala mafakitale.DMC si otsika kawopsedwe, komanso ali ndi makhalidwe a mkulu kung'anima mfundo, otsika nthunzi kuthamanga ndi m'munsi kuphulika malire mu mpweya, choncho ndi zosungunulira wobiriwira kuti Chili ukhondo ndi chitetezo.
(4)Zowonjezera pa petulo
DMC ili ndi katundu wa okosijeni wambiri (mpaka 53% ya okosijeni mu molekyulu), mphamvu yowonjezera ya octane, palibe kupatukana kwa gawo, kawopsedwe kakang'ono komanso kawopsedwe kakang'ono ka biodegradability, komanso imachepetsa kuchuluka kwa ma hydrocarbon, carbon monoxide ndi formaldehyde mu utsi wagalimoto. .Kuonjezera apo, imagonjetsanso zofooka za zowonjezera za petulo zomwe zimasungunuka mosavuta m'madzi ndi kuipitsa magwero a pansi pa nthaka.Chifukwa chake, DMC ikhala imodzi mwazowonjezera zowonjezera mafuta m'malo mwa MTBE.
Kusungirako ndi Kuyendetsa kwa Dimethyl Carbonate
Kusamala Posungira:Imatha kuyaka, ndipo nthunzi yake imasakanikirana ndi mpweya, zomwe zimatha kupanga chisakanizo chophulika.Zisungeni m’nyumba yosungiramo zinthu zozizirirapo, zowuma, ndi mpweya wabwino wosayaka.Khalani kutali ndi gwero la moto ndi kutentha.Kutentha kwa laibulale sikuyenera kupitirira 37 ℃.Sungani chidebe chotsekedwa mwamphamvu.Iyenera kusungidwa mosiyana ndi zotsekemera, zochepetsera, zidulo, ndi zina zotero, ndipo zisasakanizidwe.Gwiritsani ntchito magetsi osaphulika komanso mpweya wabwino.Letsani kugwiritsa ntchito zida zamakina ndi zida zomwe zimakonda kuphulika.Malo osungiramo zinthu ayenera kukhala ndi zida zoperekera chithandizo chadzidzidzi zomwe zatayikira komanso zida zoyenera zosungiramo, zomwe ziyenera kusungidwa m'malo ozizira, owuma komanso opanda mpweya wabwino wosayaka.
Kusamala Pamayendedwe:Kulongedza Zizindikiro Kuwotcha Kwamadzimadzi Njira Yoyikiramo Bokosi lamatabwa lodziwika bwino kunja kwa ma ampoules;Bokosi lamatabwa wamba kunja kwa mabotolo agalasi, mabotolo achitsulo, mabotolo apulasitiki kapena migolo yachitsulo (zitini) Njira zodzitetezera Magalimoto oyendera magalimoto Zida zozimitsa moto ndi zida zadzidzidzi zomwe zatayikira ziyenera kukhala ndi mitundu yofananira ndi kuchuluka kwake.
Nthawi yotumiza: Sep-07-2022