Yam cuam tshuam rau cov boiling taw tes ntawm TetranahyDrofuran thiab cov kev siv tswv yim
TetrahyDrofuran (THF) yog cov organic dav hauv cov tshuaj lom neeg muaj kuab tshuaj thiab yog li ntawd tau siv dav nyob hauv cov chaw tshuaj, tshuaj thiab cov khoom siv tshuaj txuj ci siab. Hauv daim ntawv no, peb yuav tham txog qhov tob ntawm cov yam ntxwv boiling ntawm TetrahyDrofuran, yam cuam tshuam rau nws thiab nws qhov tseem ceeb hauv kev siv cov ntawv thov.
I. Cov khoom tseem ceeb ntawm TetranahyDrofuran thiab nws lub boiling taw tes
TetrahyDrofuran (Thf) yog Cyclic Ethaws nrog cov tshuaj noj cov mis nyuj c4h8o. Raws li cov kuab tshuaj uas ib txwm siv, TetraYdrofuran yog xim tsis muaj xim thiab pob tshab ntawm chav sov thiab muaj lub tshuab hluav taws xob siab. TetrahyDrofuran muaj qhov cub npau npau ntawm 66 ° C (kwv yees li 339 k), uas ua rau nws yooj yim mus rau ntawm ntau cov txheej txheem tshuaj lom neeg. TetrahyDrofoDuran qhov qis boiling taw tes kuj txhais tau tias nws tuaj yeem raug tshem tawm ntawm lub txheej txheem kev tawm tsam me ntsis, txo kev cuam tshuam nrog cov kev cuam tshuam tom ntej.
Yam cuam tshuam rau cov boiling taw tes ntawm tetrahydrofuran
Txawm hais tias qhov cub boiling ntawm tetrahydrofuran muaj tus nqi ruaj khov nyob rau hauv cov ntaub ntawv siv tshuaj, hauv kev xyaum lub boiling taw tes ntawm tetrahydrofuran tuaj yeem cuam tshuam los ntawm ntau yam:
Cuam tshuam ntawm ambient siab: qhov npau npau taw ntawm TetranahyDrofuran sib txawv nrog ambient siab. Ntawm cov qauv cua ntawm cov qauv siab, lub qhov cub npau npau ntawm TetranahyDrofuran yog 66 ° C. Nyob rau hauv siab lossis qis siab, lub tswb kub yuav hloov kom haum. Feem ntau, qhov siab dua lub siab, siab dua qhov boiling point ntawm tetranahydrofuran; Hloov siab, hauv lub tshuab nqus tsev, qhov npau npau yuav tsawg.

Cawv ntawm Purity: impurities nyob rau hauv TetranahyDrofuran yuav muaj qhov cuam tshuam rau nws lub qhov cub npau npau. Yog tias ib qho kev daws teeb meem TetrahyDroHDrofuran muaj cov dej siab lossis lwm yam kev ua kom npau taws, nws qhov kev npau taws yuav txawv ntawm cov ntshiab tetrahydrofuran. Hauv tshwj xeeb, muaj cov dej noo, uas yog me ntsis soluble hauv dej, tuaj yeem tsim ib lub azerotrope nrog thf, ua rau muaj kev hloov me me hauv lub boiling point.

Azeotropic tshwm sim: Hauv kev coj ua, TetrahyDrofuran feem ntau sib xyaw nrog lwm cov kuab tshuaj los ua Azebrotropic sib xyaw. Lub ntsiab lus npau npau ntawm xws mixtures feem ntau yog txawv ntawm cov ntawm ib feem ntawm ib feem thiab azerotropy complicates kev sib cais cov txheej txheem. Yog li ntawd, thaum xaiv TetrahyDrofuran ua ib qho kev daws teeb meem, nws yog ib qho tseem ceeb kom nkag siab txog nws txoj kev sib txuas.

III. Cov kev siv tswv yim ntawm TetranahyDrofuran npau ntsuam hauv kev lag luam
Lub npau npau kis cov khoom ntawm TetrahyDrofuran muaj cov ntawv thov tseem ceeb hauv kev tsim khoom:
Rov qab thiab rov siv cov kuab tshuaj: txij li tetrahydrofuran muaj qhov yooj yim npau suav, nws yooj yim kom rov zoo los ntawm cov tshuaj tiv thaiv los ntawm kev sib xyaw lossis lwm yam kev sib cais. Cov cuab yeej no tsuas yog pab txo cov nqi ntau lawm, tab sis kuj txo qhov cuam tshuam rau ib puag ncig.

Cov ntawv thov hauv polymerisation: hauv qee cov tshuaj tiv thaiv, TetrahyDrofuran muaj qhov ntsuas kub me thiab paub meej tias qhov tshuaj tiv thaiv no tau ua tiav. Nws qhov tsis muaj zog kuj tseem tuaj yeem raug tshem tawm sai sai ntawm qhov kawg ntawm cov tshuaj tiv thaiv, tiv thaiv kev cuam tshuam tsis zoo ntawm cov khoom siv huv.

Daim ntawv thov hauv cov tshuaj synthesis: TetrahyDrofuran feem ntau siv los ua cov kuab tshuaj ntawm cov khoom siv tshuaj yeeb, nws yog qhov ua kom pom tseeb rau cov kev tswj hwm. TetrahyDrofuran txoj kev nrawm nrawm ntawm cov khoom siv ua kom nws muaj txiaj ntsig zoo hauv kev sib cais kev sib cais thiab cov txheej txheem lim dej.

Tag
Lub qhov cub npau npau ntawm TetrahyDrofuran yog ib qho ntawm nws cov khoom tseem ceeb hauv kev siv cov ntawv thov. Nkag siab txog qhov ntsuas kub ntawm Tetranthadan thiab nws cov txiaj ntsig yuav pab tswj cov tuam txhab siv tshuaj chemical kom zoo dua qub thiab txhim kho kev ua tau zoo thiab ntau lawm cov khoom lag luam. Kev siv tsim nyog ntawm nws cov yam ntxwv qis tuaj yeem pab ua tiav cov khoom siv tau zoo thiab kev txhim kho ib puag ncig. Thaum xaiv thiab siv TetrahyDrofuran yog cov kuab tshuaj, kev txiav txim siab tag nrho ntawm nws cov ntsiab lus boiling yog tus yuam sij los ua kom muaj kev nyab xeeb thiab ua haujlwm ntawm cov txheej txheem tshuaj lom neeg.