Dareere Oxidation & Dareeraha oksaydhka wajiga
Dareere Oxidation & Dareeraha oksaydhka wajiga
Marka ethylene iyo propylene laga helay dildilaaca batroolka hydrocarbon loo isticmaalo sida walxaha polymerization, hydrogenation xulashada ayaa loo baahan yahay si meesha looga saaro wasakhaha sida alkyne, diene, carbon monoxide, carbon dioxide iyo oxygen, iyada oo aan lumin olefin.Kataliyatada la isticmaalo guud ahaan waa palladium, platinum ama nikkel, cobalt, molybdenum, iwm, oo ku dul yaal aluminium.Soodhaliyaha hydrogenation Selectives leh sifooyin kala duwan ayaa lagu heli karaa iyada oo la xakameynayo qadarka walaxda firfircoon, habka wax soo saarka ee taageerada iyo kicinta.Waxyaabo kale sida dildilaaca shidaalka sifaynta, nitrobenzene hydrogenation dhimista aniline, hydrogenation kicinta.
Keliya hydrogenation qoto dheer ilaa xeryahooda saturated.Sida hydrogenation benzene ilaa cyclohexane oo leh nikkel alumina kicinta, phenol hydrogenation ilaa cyclohexanol, waxay leedahay hydrogenation dinitrile ilaa hexdiamine oo leh nikkel kicinta.
Isticmaalka silikon carbide ama α-alumina taageero ahaan (oo leh qadar yar oo barium oxide ah sida cocatalyst).Ka dib wanaajinta joogtada ah ee xaaladaha kicinta iyo habka, wax-soo-saarka miisaanka ethylene ayaa dhaaftay 100%.
Kataliye ku buufiyay silikoon carbide ama corundum si oksaydhka o-xylene ilaa phthalic anhydride.Daroogada loo diyaariyey iyadoo lagu buufiyo qaybta firfircoon ee vanadium-molybdenum oksaydhiyeyaasha taxanaha ah ee corundum ee oksaydhka benzene ama butane ilaa maleic anhydride.Hagaajinta kicinta noocan oo kale ah waa horumarinta qaybo badan, siddeed qaybood oo ka kooban ayaa soo muuqday.Qaabka qaaduhu waxa kale oo laga beddelaa qaab-wareeg ah oo loo beddelaa goobaabin, wareeg-gooyo badhkeed si loo fududeeyo wareejinta kulaylka.Isbeddelka guud waa in la raaco culeyska sarreeya, wax-soo-saarka sarreeya iyo nadiifnimada sare ee alaabta.
Sida oxidation methanol galay formaldehyde leh qalin - pumice (ama alumina), birta oxide - molybdenum oxide iyo electrolytic silver kicin.
Sannadihii 1960-aadkii, kataliye ka kooban bismuth-mo-phosphorus compound oxide katalist ayaa la sameeyay.Acrylonitrile waxaa lagu soo saari karaa hal tallaabo iyadoo lagu darayo propylene, ammonia iyo hawo kicinta.Si loo hagaajiyo xulashada iyo wax-soo-saarka loona yareeyo wasakhowga deegaanka, wadamo kala duwan ayaa si joogto ah u wanaajiya kicinta, qaar ka mid ah kicinta cusub ayaa ka kooban ilaa 15 nooc oo walxo ah.kicinta koloriinta Ogsajiinta, 60-meeyadii waxa ay soo saareen koloriin naxaas ah oo alumina ah, oo ku jira reactor-ka sariirta dareeraha leh ee loo maro ethylene, hydrogen chloride iyo hawada ama ogsijiinta ayaa heli kara dichloroethane.Dichloroethane waxaa la sameeyay pyrolyzed si loo soo saaro monomer vinyl chloride.Habkani wuxuu faa'iido u leeyahay horumarinta PVC ee meelaha ay korontadu qaali tahay iyo petrochemicals ayaa la sameeyay, habka wax soo saarka ee taageerada iyo kicinta.Waxyaabo kale sida dildilaaca shidaalka sifaynta, nitrobenzene hydrogenation dhimista aniline, hydrogenation kicinta.
Wajiga dareeraha oksaydhaynta kicinta
Waxaa jira inta badan:
(1) Ethylene, propylene oxidation acetaldehyde, acetone (Habka Wacker), oo leh qadar yar oo palladium ah.chloride copper chloride-ka kicinta dareeraha, iyada oo loo marayo olefin, hawada ama ogsijiinta, ka dib hal ama laba tillaabo falcelin si aad u hesho waxa loo baahan yahayxeryahooda oksijiin ka kooban.Khasaaradu waa daxalka halista ah ee qalabka falcelinta.
(2) oksidation silsilad dhinaca caraf udgoonloogu talagalay kicinta aryl acid, sida p-xylene ee xalalka acetic acid leh cobalt acetate iyo qadar yar oo ammonium bromide ah.kululaynta, soosaarka oksaydhka hawada terephthalic acid, laakiin daxalka halista ah ee qalabka falcelinta.
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