Dehydrogenation Catalyst
Dehydrogenation Catalyst
- High Temperature Dehydrogenation Catalytic Technology
Xws li hlau oxide - chromium oxide - poov tshuaj oxide tuaj yeem ua rau ethylbenzene (los yog n-butene) dehydrogenation rau styrene (los yog butadiene) nyob rau hauv qhov kub thiab txias thiab dej vapor ntau.
- Tsis tshua muaj kub dehydrogenation catalytic technology
Vim hais tias dehydrogenation feem ntau yuav tsum tau nqa tawm ntawm qhov kub thiab txias, decompression los yog nyob rau hauv lub xub ntiag ntawm ib tug loj tus naj npawb ntawm diluents, lub zog noj yog loj.Nyob rau hauv xyoo tas los no, oxidative dehydrogenation ntawm qis kub tau tsim.Xws li polyethylene nrog bismuth - molybdenum hlau oxide catalyst los ntawm oxidative dehydrogenation ntawm butadiene.
Hydrogenation catalysttsis yog tsuas yog siv nyob rau hauv cov txheej txheem ntau lawm, tab sis kuj siv dav hauv cov txheej txheem refining ntawm raw cov ntaub ntawv thiab cov khoom.Raws li kev sib txawv hydrogenation, nws tuaj yeem muab faib ua peb pawg:
① Xaiv cov hydrogenation catalysts, xws li ethylene thiab propylene tau los ntawm cov roj av hydrocarbon tawg ua polymerization raw cov ntaub ntawv, yuav tsum xub xaiv los ntawm hydrogenation, kom tshem tawm cov kab impurities xws li alkyne, diene, carbon monoxide, carbon dioxide, oxygen, thiab tsis poob ntawm ene. .Cov catalyst siv feem ntau yog palladium, platinum lossis npib tsib xee, cobalt, molybdenum, thiab lwm yam, ntawm alumina.
② Non-selective hydrogenation catalyst, uas yog, cov catalyst siv rau kev sib sib zog nqus hydrogenation rau saturated compounds.Xws li benzene hydrogenation rau cyclohexane nrog nickel-alumina catalyst, phenol hydrogenation rau cyclohexanol, muaj dinitrile hydrogenation rau hexdiamine nrog nickel catalyst.
③ Hydrogenation catalyst, xws li tooj liab chromate catalyst rau roj hydrogenation los tsim cov cawv ntau dua
Nws yog qhov ntxov tshaj plaws complexation catalyst siv nyob rau hauv industrial ntau lawm.Aldehydes nrog ib tug ntxiv carbon atom yog tsim los ntawm cov tshuaj tiv thaiv ntawm alkenes nrog syngas (CO + H2) nyob rau hauv lub xub ntiag ntawm catalyst.Xws li ethylene, propylene ua raw cov ntaub ntawv los ntawm hydroformylation (uas yog, hu ua carbonyl synthesis) propyl aldehyde, butyl aldehyde.Hydroformylation tau ua nyob rau hauv cov kua theem ntawm kub thiab siab siv carbonyl cobalt complex ua catalyst.
Polyethylene feem ntau yog muab faib ua tsawg ntom thiab siab ceev.Yav dhau los, yav dhau los siv txoj kev kub siab (100 ~ 300MPa) ntau lawm, oxygen, organic peroxide ua catalyst.Cov tom kawg yog tsim los ntawm txoj kev nruab nrab siab los yog txoj kev tsis tshua muaj siab.Hauv txoj kev nruab nrab siab, chromium-molybdenum oxide yog nqa ntawm silicon aluminium kua nplaum ua catalyst.Nyob rau hauv txoj kev uas tsis tshua muaj siab, Ziegler hom catalyst (sawv cev los ntawm titanium tetrachloride thiab triethyl aluminium system) yog siv rau polymerization ntawm qhov kub thiab txias.Polypropylene ntau lawm kuj tsim kev txhawb nqa titanium-aluminium system ntawm high efficiency catalyst, ib gram ntawm titanium tuaj yeem tsim ntau tshaj 1000kg ntawm polypropylene.
Nws yog qhov ntxov tshaj plaws complexation catalyst siv nyob rau hauv industrial ntau lawm.Aldehydes nrog ib tug ntxiv carbon atom yog tsim los ntawm cov tshuaj tiv thaiv ntawm alkenes nrog syngas (CO + H2) nyob rau hauv lub xub ntiag ntawm catalyst.Xws li ethylene, propylene ua raw cov ntaub ntawv los ntawm hydroformylation (uas yog, hu ua carbonyl synthesis) propyl aldehyde, butyl aldehyde.Hydroformylation tau ua nyob rau hauv cov kua theem ntawm kub thiab siab siv carbonyl cobalt complex ua catalyst.
Sau koj cov lus ntawm no thiab xa tuaj rau peb
