Qhov sib txawv tseem ceeb ntawm propanal thiab propanone yog tias propanal yog aldehyde uas muaj peb lub atoms carbon, hos propanone yog ketone muaj peb carbon atoms.
Propanal thiab propanone yog cov organic tebchaw. Ob lub tebchaw no muaj pawg carbonyl. Tab sis lawv poob rau hauv ob pawg vim tias propanal muaj ib pab pawg aldehyde nrog hydrogen atom txuas rau carbonyl pawg thaum propanone yog ketone nrog alkyl lossis aryl pawg txuas nrog pawg carbonyl tab sis tsis muaj hydrogen atoms txuas rau carbonyl carbon. Ntxiv mus, propanal thiab propanone yog cov qauv isomers ntawm ib leeg.
Propanal yog dab tsi?
Propanal yog ib qho aldehyde uas muaj peb carbon atoms. Nws muaj cov tshuaj formula CH3CH2CHO. "Propanal" yog lub npe IUPAC ntawm qhov sib xyaw no; Nws lub npe yog propionaldehyde. Nws yog ib qho saturated compound, uas txhais tau hais tias tsis muaj ob daim ntawv cog lus ntawm carbon atoms. Ntxiv mus, qhov no yog cov qauv isomer ntawm acetone (propanone).
Daim duab 01: Cov qauv ntawm Propanol
Tsis tas li ntawd, cov molar loj ntawm cov tshuaj no yog 58.08 g / mol. Lub melting point ntawm no compound yog -81 ° C, thiab lub boiling point yog 46 mus rau 50 ° C. Nws tshwm sim raws li cov kua tsis muaj xim, thiab nws muaj pungent, irritating tsw.
Thaum xav txog kev tsim cov khoom sib xyaw no, peb tuaj yeem tsim nws kev lag luam ntawm hydroformylation. Nyob ntawd, peb yuav tsum muab cov roj synthesis nrog ethylene nyob rau hauv lub xub ntiag ntawm ib tug hlau catalyst. Feem ntau, qhov sib xyaw no muaj txiaj ntsig zoo ua tus thawj coj rau trimethylolethane, uas yog ib qho tseem ceeb hauv kev tsim cov resins.
YPropanone yog dab tsi?
Propanone yog ketone uas muaj peb carbon atoms. Nws cov tshuaj formula yog (CH3)2CO. Lub npe nrov rau cov tshuaj no yog acetone. Tsis tas li ntawd, qhov sib xyaw no muaj ob pawg methyl txuas nrog carbonyl carbon atom. Nws tshwm sim raws li ib tug tsis muaj kob thiab flammable kua thiab yog volatile heev. Tsis tas li ntawd, nws yog qhov yooj yim thiab tsawg tshaj plaws ketone. Tsis tas li ntawd, nws muaj pungent, floral tsw. Qhov hnyav ntawm molar yog 58.08 g / mol. Lub melting point yog -94.7 ° C, thaum lub boiling point yog 56.05 ° C. Peb tuaj yeem tsim cov khoom sib xyaw no ncaj qha lossis ncaj qha los ntawm propylene. Cov txheej txheem hu ua "cumene process".
Daim duab 2: Cov qauv ntawm Acetone
Ntawm cov kev siv ntawm propanone, daim ntawv thov loj yog nws siv los ua cov kuab tshuaj. Nws yog ib qho hnyav heev rau ntau cov yas thiab hluavtaws fibers. Ntxiv mus, nws yog ib qho tseem ceeb raws li ib tug tshuaj intermediate rau zus tau tej cov methyl methacrylate. Tsis tas li ntawd, qhov sib xyaw no tau muab teev ua cov khoom noj ntxiv.
Qhov txawv ntawm Propanal thiab Propanone yog dab tsi?
Propanal yog ib qho aldehyde thiab muaj peb cov pa roj carbon atom, thiab nws muaj cov tshuaj formula CH3CH2CHO. Nyob rau hauv sib piv, propanone yog ib tug ketone uas muaj peb carbon atoms, thiab cov tshuaj formula yog (CH3)2CO. Yog li, qhov sib txawv tseem ceeb ntawm propanal thiab propanone yog propanal yog ib qho aldehyde uas muaj peb carbon atoms, hos propanone yog ketone muaj peb carbon atoms.
Ntxiv mus, cov molar pawg ntawm propanal thiab propanone sib npaug vim lawv yog cov qauv isomers. Txawm li cas los xij, cov ntsiab lus melting thiab boiling yog txawv vim lawv muaj cov qauv sib txawv.
Hauv qab no yog ib sab ntawm kev sib piv nrog rau qhov sib txawv ntawm propanal thiab propanone.
Summary – Propanal vs Propanone
Propanal yog ib qho aldehyde uas muaj peb carbon atoms, thiab nws muaj cov tshuaj formula CH3CH2CHO, thaum Propanone yog ib ketone uas muaj peb carbon atoms, thiab cov tshuaj formula yog (CH3)2CO. Yog li, hauv cov ntsiab lus, qhov sib txawv tseem ceeb ntawm propanal thiab propanone yog propanal yog ib qho aldehyde uas muaj peb carbon atoms, whereas propanone yog ib qho ketone uas muaj peb carbon atoms.
