1,3,5-Tribromobenzeneyog ib qho organic compound nrog cov mis molecular C6H3Br3 thiab CAS 626-39-1. Nws yog lub teeb daj xim av hmoov nrog ib qho tsw ntxhiab tsw thiab yuav ua rau muaj kev tsis haum rau qee tus neeg. Insoluble hauv dej, tab sis soluble hauv qee cov organic solvents xws li kub ethanol thiab glacial acetic acid. Raws li ib qho tseem ceeb organic compound, nws muaj dav daim ntawv thov kev cia siab nyob rau hauv teb xws li chemistry, tshuaj, tshuaj tua kab, thiab cov ntaub ntawv science. Nrog rau kev txhim kho txuas ntxiv ntawm kev tshawb fawb thiab thev naus laus zis thiab kev tshwm sim ntawm cov ntaub ntawv tshiab, lawv daim ntawv thov kev lag luam tseem yuav nthuav dav ntxiv. Nws yuav tsum tau muab sau tseg tias nws txoj kev nyab xeeb thiab ib puag ncig tus phooj ywg yuav tsum tau tswj nruj me ntsis thaum siv los xyuas kom meej tib neeg kev noj qab haus huv thiab ib puag ncig kev nyab xeeb.
(Cov khoom txuas: https://www.bloomtechz.com/chemical-reagent/laboratory-reagent/1-3-5-tribromobenzene-cas-626-39-1.html )
Tribromobenzene yog ib qho tseem ceeb ntawm cov organic tebchaw xws li chemistry, tshuaj, thiab cov ntaub ntawv tshawb fawb. Muaj ntau txoj kev sib xyaw ua ke rau Tribromobenzene, thiab cov hauv qab no yog cov lus piav qhia ntxaws ntxaws ntawm txhua txoj kev sib txuas rau Tribromobenzene:
1. Direct bromination txoj kev
Direct bromination txoj kev yog ib qho ntawm feem ntau siv synthesis txoj kev rau Tribromobenzene. Txoj kev no siv benzene ua raw khoom thiab reacts nrog bromine nyob rau hauv qhov kev txiav txim ntawm ib tug catalyst los tsim Tribromobenzene. Cov kauj ruam tshwj xeeb yog raws li nram no:
(1) Kev npaj cov reactants
Ntxiv ib qho nyiaj ntawm benzene thiab bromine rau hauv cov hlab ntsha.
Ntxiv qhov tsim nyog ntawm cov catalyst, xws li hlau hmoov lossis txhuas hmoov.
(2) Kev tswj xyuas qhov xwm txheej
Tshav kub cov tshuaj tiv thaiv rau cov tshuaj tiv thaiv kub, feem ntau tswj ntawm 100 degree thiab 130 degree.
Khaws qhov ntsuas kub tsis tu ncua thiab txuas ntxiv stirring kom huv si sib tov cov reactants.
Saib xyuas cov txheej txheem tshuaj tiv thaiv thiab xyuam xim rau cov xim thiab viscosity hloov ntawm cov tshuaj tiv thaiv.
(3) Kev tswj lub sijhawm tiv thaiv
Lub sij hawm tshuaj tiv thaiv muaj kev cuam tshuam loj rau kev sib txuas ntawm Tribromobenzene thiab yuav tsum tau tswj kom meej.
Feem ntau hais lus, nws raug nquahu kom muaj lub sijhawm tshuaj tiv thaiv ntawm 3 thiab 5 teev.
Raws li lub sijhawm cov tshuaj tiv thaiv ntev, cov txiaj ntsig ntawm Tribromobenzene maj mam nce, tab sis lub sij hawm tshuaj tiv thaiv ntau dhau tuaj yeem ua rau cov khoom tsim los ntawm cov khoom lag luam.
(4) Kev sib cais thiab kev ua kom huv
Tom qab cov tshuaj tiv thaiv tiav, txias cov tshuaj tiv thaiv rau hauv chav sov.
Tshem tawm cov catalysts thiab lwm yam khoom impurities los ntawm kev pom.
Cais cov filtrate los ntawm distillation los yog crystallization kom tau txais high-purity Tribromobenzene.
(5) Chemical sib npaug
Hauv txoj kev ncaj qha bromination, benzene tau hloov pauv cov tshuaj tiv thaiv nrog bromine los ua Tribromobenzene. Qhov kev sib npaug tshuaj lom neeg tshwj xeeb yog raws li hauv qab no:
C6H6+3Br2 → C6H3Br3+3HBr
Qhov kev sib npaug no sawv cev rau kev hloov pauv cov tshuaj tiv thaiv ntawm benzene thiab bromine hauv txoj kev ncaj qha bromination, tsim Tribromobenzene thiab hydrobromic acid. Nws yuav tsum tau muab sau tseg tias qhov sib npaug no tsuas yog ib qho schematic sawv cev, thiab cov txheej txheem tshuaj tiv thaiv tiag tiag yuav koom nrog lwm cov khoom nruab nrab thiab cov tshuaj tiv thaiv nyuaj.
2, Hlau bromide txoj kev
Txoj kev hlau bromide yog ib txoj kev txhim kho synthesis rau Tribromobenzene, uas tuaj yeem ua rau kom muaj txiaj ntsig thiab purity. Txoj kev no siv benzene thiab hlau bromide ua raw cov ntaub ntawv thiab reacts nyob rau hauv inert roj tiv thaiv los tsim Tribromobenzene. Cov kauj ruam tshwj xeeb yog raws li nram no:
(1) Kev npaj cov reactants
Ntxiv ib qho nyiaj ntawm benzene thiab ferric bromide rau cov hlab ntsha.
Ntxiv qhov tsim nyog ntawm ferric bromide ua ib qho catalyst, nrog rau kev siv ntau npaum li 10% mus rau 20% los ntawm qhov loj ntawm benzene.
(2) Kev tswj xyuas qhov xwm txheej
Tshav kub cov tshuaj tiv thaiv rau cov tshuaj tiv thaiv kub, feem ntau tswj ntawm 80 degree thiab 100 degree.
Khaws qhov ntsuas kub tsis tu ncua thiab txuas ntxiv stirring kom huv si sib tov cov reactants.
Saib xyuas cov txheej txheem tshuaj tiv thaiv thiab xyuam xim rau cov xim thiab viscosity hloov ntawm cov tshuaj tiv thaiv.
(3) Kev tswj lub sijhawm tiv thaiv
Lub sij hawm tshuaj tiv thaiv muaj kev cuam tshuam loj rau kev sib txuas ntawm Tribromobenzene thiab yuav tsum tau tswj kom meej.
Feem ntau hais lus, nws raug nquahu kom muaj lub sijhawm tshuaj tiv thaiv ntawm 2 thiab 4 teev.
Raws li lub sijhawm cov tshuaj tiv thaiv ntev, cov txiaj ntsig ntawm Tribromobenzene maj mam nce, tab sis lub sij hawm tshuaj tiv thaiv ntau dhau tuaj yeem ua rau cov khoom tsim los ntawm cov khoom lag luam.
(4) Kev sib cais thiab kev ua kom huv
Tom qab cov tshuaj tiv thaiv tiav, txias cov tshuaj tiv thaiv rau hauv chav sov.
Tshem tawm cov catalysts thiab lwm yam khoom impurities los ntawm kev pom.
Cais cov filtrate los ntawm distillation los yog crystallization kom tau txais high-purity Tribromobenzene.
(5) Chemical sib npaug
Nyob rau hauv txoj kev hlau bromide, benzene thiab bromine raug hloov pauv cov tshuaj tiv thaiv catalyzed los ntawm hlau bromide los ua Tribromobenzene. Qhov kev sib npaug tshuaj lom neeg tshwj xeeb yog raws li hauv qab no:
C6H6+Br2FeBr3 → C6H3Br3+FeBr2+HBr
Qhov kev sib npaug no sawv cev rau kev hloov pauv ntawm benzene thiab bromine catalyzed los ntawm hlau bromide hauv txoj kev hlau bromide, tsim Tribromobenzene, hlau bromide, thiab hydrobromic acid. Nws yuav tsum tau muab sau tseg tias qhov sib npaug no tsuas yog ib qho schematic sawv cev, thiab cov txheej txheem tshuaj tiv thaiv tiag tiag yuav koom nrog lwm cov khoom nruab nrab thiab cov tshuaj tiv thaiv nyuaj.
3. Photochemical synthesis txoj kev
Ntxiv benzene thiab bromine rau lub photoreactor, ntxiv qhov tsim nyog tus nqi ntawm photosensitizer (xws li sawv liab), thiab qhia inert gas kom tshem tawm cua.
React nyob rau hauv lub teeb tej yam kev mob thiab tswj rau ib tug tej lub sij hawm ntawm lub sij hawm kom cia cov tshuaj tiv thaiv mus tas li. Photochemical synthesis yog ib txoj hauv kev tshiab synthesis uas siv lub teeb lub zog los tsav cov tshuaj lom neeg, nrog rau qhov zoo ntawm cov tshuaj tiv thaiv me me thiab kev xaiv siab. Cov hauv qab no yog cov kauj ruam thiab sib npaug tshuaj sib npaug rau kev sib xyaw Tribromobenzene siv photochemical synthesis method:
(1) Kev npaj cov reactants
Ntxiv ib qho nyiaj ntawm benzene thiab bromine rau photoreactor.
Ntxiv qhov tsim nyog tus nqi ntawm photosensitizer, xws li sawv liab, thiab lwm yam.
Ntxiv qhov tsim nyog ntawm cov catalyst, xws li hlau hmoov lossis txhuas hmoov.
(2) Kev tswj cov duab tiv thaiv kab mob
Kub lub photoreactor rau cov tshuaj tiv thaiv kub, feem ntau tswj ntawm 80 degree thiab 100 degree.
Ntxiv stirring kom huv si sib tov cov reactants.
Qhib lub teeb ci thiab siv ultraviolet lossis pom lub teeb kom irradiate cov tshuaj tiv thaiv, tsav cov tshuaj tiv thaiv mus ntxiv.
Saib xyuas cov txheej txheem tshuaj tiv thaiv thiab xyuam xim rau cov xim thiab viscosity hloov ntawm cov tshuaj tiv thaiv.
(3) Kev tswj lub sijhawm tiv thaiv
Lub sij hawm tshuaj tiv thaiv muaj kev cuam tshuam loj rau kev sib txuas ntawm Tribromobenzene thiab yuav tsum tau tswj kom meej.
Feem ntau hais lus, nws raug nquahu kom muaj lub sijhawm tshuaj tiv thaiv ntawm 3 thiab 5 teev.
Raws li lub sijhawm cov tshuaj tiv thaiv ntev, cov txiaj ntsig ntawm Tribromobenzene maj mam nce, tab sis lub sij hawm tshuaj tiv thaiv ntau dhau tuaj yeem ua rau cov khoom tsim los ntawm cov khoom lag luam.
(4) Kev sib cais thiab kev ua kom huv
Tom qab cov tshuaj tiv thaiv tiav, txias cov tshuaj tiv thaiv rau hauv chav sov.
Tshem tawm cov catalysts thiab lwm yam khoom impurities los ntawm kev pom.
Cais cov filtrate los ntawm distillation los yog crystallization kom tau txais high-purity Tribromobenzene.
(5) Chemical sib npaug
Hauv photochemical synthesis, benzene thiab bromine tau hloov pauv cov tshuaj tiv thaiv uas tau tsav los ntawm lub teeb lub zog los ua Tribromobenzene. Qhov kev sib npaug tshuaj lom neeg tshwj xeeb yog raws li hauv qab no:
C6H6+3Br2 (light) → C6H3Br3+3HBr
Qhov kev sib npaug no qhia tau hais tias nyob rau hauv photochemical synthesis, benzene thiab bromine tau hloov pauv cov tshuaj tiv thaiv uas tau tsav los ntawm lub teeb lub zog, tsim Tribromobenzene thiab hydrobromic acid.
4. Lwm txoj kev
Ntxiv rau peb txoj kev saum toj no, kuj tseem muaj lwm txoj hauv kev rau kev sib xyaw Tribromobenzene, xws li cov txheej txheem synthesis siv phenol ua cov khoom siv raw thiab cov txheej txheem synthesis siv benzoic acid ua raw khoom. Cov kauj ruam tshwj xeeb thiab cov kev mob tshwm sim ntawm cov txheej txheem no txawv nyob ntawm cov khoom siv raw thiab cov txheej txheem. Muaj ntau txoj kev sib xyaw ua ke rau Tribromobenzene, thiab cov txheej txheem tsim nyog tuaj yeem raug xaiv rau kev sib xyaw ua ke raws li cov khoom sib txawv thiab cov txheej txheem. Hauv kev ua haujlwm zoo, nws yog ib qho tsim nyog yuav tsum tau ua tib zoo saib xyuas cov xwm txheej ntawm cov tshuaj tiv thaiv thiab siv cov kev ntsuas kev nyab xeeb kom ntseeg tau tias kev ua tiav ntawm kev sib txuas.