Sodium borohydride hmoov, ib tug ntau yam txo tus neeg sawv cev lug siv nyob rau hauv ntau yam industries, plays lub luag hauj lwm tseem ceeb nyob rau hauv ntau yam tshuaj. Qhov no muaj zog compound, nrog nws cov khoom tshwj xeeb, tau dhau los ua qhov tseem ceeb hauv kev siv tshuaj, polymer, thiab kev siv tshuaj tshwj xeeb. Rau cov neeg hauv kev lag luam chemical nrhiav kev tsim cov sodium borohydride, kev nkag siab txog cov txheej txheem yog qhov tseem ceeb. Cov lus qhia no yuav coj koj mus txog qhov tsis sib xws ntawm kev tsim cov tshuaj sodium borohydride, npog cov tshuaj lom neeg muaj feem cuam tshuam, cov tshuaj reagents tsim nyog, thiab kev ceev faj txog kev nyab xeeb tseem ceeb.
Peb muab Sodium Borohydride Powder CAS 16940-66-2, thov xa mus rau lub vev xaib hauv qab no kom paub meej cov lus qhia tshwj xeeb thiab cov ntaub ntawv khoom.
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Dab tsi yog cov tshuaj tiv thaiv kev koom tes hauv kev tsim cov sodium borohydride?
Lub synthesis ntawm sodium borohydride muaj ib tug series ntawm complex tshuaj tiv thaiv. Cia peb delve rau hauv thawj txoj kev siv rau nws cov khoom:
Schlesinger txheej txheem
Schlesinger npaj yog qhov siv dav tshaj plaws kev siv tshuab rau kev tsim cov sodium borohydride (NaBH4). Qhov kev npaj no suav nrog cov lus teb ob kauj ruam. Thaum xub thawj, sodium hydride (NaH) teb nrog trimethyl borate (B(OCH3) 3), shaping ib qho khoom nruab nrab. Nyob rau lub sijhawm tam sim no, qhov nruab nrab ntawm txoj kev no yog pab daws kev tshem tawm sodium borohydride. Cov lus teb los ntawm thiab loj yog raws li nram no: 4 NaH + B(OCH3)3 → NaBH4 + 3 NaOCH3. Cov lus teb tsis tu ncua yuav tsum tau muab tso rau hauv qab tswj cov xwm txheej, ntau zaus dua li tsis nyob ntawm qhov ntsuas kub, kom lav cov lus teb zoo tshaj plaws. Ntxiv mus, huab cua tsis muaj zog, xws li nitrogen lossis argon, yog khaws cia kom tsis txhob muaj cov lus teb tsis zoo uas yuav tshwm sim nrog oxygen lossis noo noo. Lub tswv yim no muab kev paub zoo thiab ntau yam los tsim sodium borohydride, uas yog ib qho tseem ceeb reagent nyob rau hauv ntau yam tshuaj thiab txhua yam kev siv, suav raws li ib tug txo tus neeg teb xov tooj nyob rau hauv natural amalgamation thiab nyob rau hauv lub tsim ntawm hydrogen muaj peev xwm cov ntaub ntawv.
Brown-Schlesinger txheej txheem
Lwm txoj hauv kev los tsim sodium borohydride yog cov txheej txheem Brown-Schlesinger, uas cuam tshuam ncaj qha cov tshuaj sodium nrog boron compounds.
Hauv cov txheej txheem no, sodium hydride (NaH) reacts nrog trimethyl borate (B(OCH3) 3) nyob rau hauv lub xub ntiag ntawm sodium methoxide (NaOCH3) los tsim sodium borohydride (NaBH4).
Cov tshuaj tiv thaiv tuaj yeem sawv cev los ntawm qhov sib npaug hauv qab no: 4 NaH + B(OCH3)3 + NaOCH3 → NaBH4 + 4 NaOCH3. Txoj hauv kev no muaj qee qhov zoo dua li cov txheej txheem Schlesinger ib txwm muaj, tshwj xeeb tshaj yog nyob rau hauv cov nqe lus ntawm cov txiaj ntsig siab dua thiab ntau dua purity ntawmsodium borohydride uakhoom. Txawm li cas los xij, cov txheej txheem Brown-Schlesinger feem ntau xav tau cov cuab yeej tshwj xeeb thiab kev tswj hwm nruj dua ntawm cov tshuaj tiv thaiv, xws li kub, siab, thiab kev xaiv cov kuab tshuaj.
Cov yam ntxwv no tuaj yeem ua rau cov txheej txheem nyuaj thiab kim. Txawm hais tias cov kev cov nyom no, txoj kev tau txais txiaj ntsig zoo rau cov ntawv thov tshwj xeeb uas cov purity thiab tawm los yog qhov tseem ceeb, thiab nws tau pom tias yog ib qho tseem ceeb hauv kev lag luam sodium borohydride ntau lawm.
Yuav ua li cas reagents yuav tsum tau ua sodium borohydride?
Kev tsim cov sodium borohydride yuav tsum muaj cov tshuaj reagents thiab cov khoom siv raw. Kev nkag siab txog cov ntsiab lus no yog qhov tseem ceeb rau kev ua tiav zoo:
Thawj Reagents
Qhov pib nrog thiab feem ntau cov reagent yog Sodium Hydride (NaH). Qhov kev nkag siab tob tob no muab cov sodium xav tau rau cov lus teb thiab paub txog nws cov khoom muaj zog nrog dampness thiab huab cua. Yog li ntawd, sodium hydride yuav tsum tau ua tib zoo saib xyuas hauv qhov chaw qhuav, tswj kom tsis txhob muaj kev phom sij txaus ntshai. Lub sijhawm tseem ceeb reagent yog Trimethyl Borate (B(OCH3)3), ib qho organoboron compound uas muab cov boron xav tau rau kev npaj ntawm sodium borohydride. Trimethyl borate tsis tu ncua synthesized los ntawm boric corrosive thiab methanol. Nws yog ib qho tseem ceeb tshaj plaws nyob rau hauv ob qho tib si Schlesinger thiab Brown-Schlesinger cov tswv yim thiab yuav tsum tau ua tib zoo ntsuas los lav qhov redress stoichiometry hauv cov tshuaj tiv thaiv.
Lwm qhov tseem ceeb, tshwj xeeb hauv Brown-Schlesinger kov, yog Sodium Methoxide (NaOCH3). Qhov kev sib xyaw no ua haujlwm ob lub hom phiaj: nws ua ob qho tib si hauv cov lus teb thiab ua cov catalyst, txhawb kev hloov pauv ntawm boron compounds rau hauvsodium borohydride ua. Sodium methoxide feem ntau yog npaj los ntawm reacting sodium hlau nrog methanol.
Cov khoom siv ntxiv
Hauv kev nthuav dav mus rau qhov tseem ceeb reagents, tiam ntawm sodium borohydride ib yam nkaus yuav tsum muaj ob peb cov ntaub ntawv pabcuam los lav kev sib koom ua haujlwm zoo thiab zam cov lus teb. Ib qho tseem ceeb tshaj plaws ntawm cov no yog Idle Gas, feem ntau tsis yog nitrogen lossis argon. Cov pa roj carbon monoxide no ua rau ib puag ncig tsis ua haujlwm uas ua rau cov lus teb los ntawm qhov tsis xav tau dampness thiab oxygen, uas tuaj yeem ua rau debasement ntawm cov reagents los yog kev npaj ntawm cov khoom lag luam.
Cov kuab tshuaj dhau los ua ib feem tseem ceeb hauv kev sib koom tes, tshwj xeeb tshaj yog nyob rau hauv kev sib cais thiab stabilizing cov reagents thaum cov lus teb. Cov kuab tshuaj nquag siv tau suav nrog tetrahydrofuran (THF) thiab diglyme, uas yog ob qho tib si hauv kev ua kom cov reactivity ntawm cov tebchaw hauv qab tswj tau.
Thaum kawg, txhawm rau lav qhov tsis zoo ntawm cov khoom kawg, Cov Kws Kho Mob Decontamination xws li cov pa roj carbon monoxide tuaj yeem siv. Cov kws kho mob tshwj xeeb no muab kev pab kom khiav tawm txhua qhov kev tawm tsam lossis cov khoom siv ntxiv los ntawm sodium borohydride, lav tias cov khoom kawg ua tau raws li cov ntsiab lus xav tau rau nws daim ntawv thov aiming.
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Dab tsi yuav tsum tau ceev faj thaum ua sodium borohydride?
Lub synthesis ntawmsodium borohydride uasuav nrog tuav cov tshuaj reactive thiab tej yam uas yuav muaj kev phom sij.
Ua raws li cov txheej txheem kev nyab xeeb nruj yog qhov tseem ceeb:
Tshuaj Tiv Thaiv Kev Nyab Xeeb
Cov Khoom Siv Tiv Thaiv Tus Kheej (PPE)
Ib txwm hnav PPE tsim nyog, suav nrog cov hnab looj tes tiv thaiv tshuaj, tsom iav kev nyab xeeb, thiab cov tsho tiv no.
Qhov cua
Xyuas kom muaj qhov cua zoo hauv chav kuaj lossis chaw tsim khoom kom tsis txhob muaj cov pa phem lossis vapors.
Tshuaj Cia
Khaws cov tshuaj reagents thiab cov khoom nyob rau hauv cov thawv tsim nyog raws li kev pom zoo los tiv thaiv kev degradation lossis tsis xav tau.
Kev Tiv Thaiv Ib puag ncig
Kev Cai Kub Kub
Tswj xyuas qhov kub thiab txias thoob plaws hauv cov txheej txheem tshuaj tiv thaiv kom ntseeg tau tias cov txiaj ntsig zoo thiab tiv thaiv kev cuam tshuam sab.
Moisture Exclusion
Sodium borohydride yog rhiab heev rau cov dej noo. Ua txhua yam haujlwm hauv qhov chaw qhuav thiab siv cov tshuaj tsis muaj dej.
Kev Tswj Siab
Qee txoj kev sib xyaw ua ke yuav muaj kev hloov pauv siab. Siv cov cuab yeej tsim nyog thiab saib xyuas cov qib siab kom zoo.
Kev nyab xeeb hluav taws
Muab lub peev xwm rau hluav taws kub vim yog qhov tshwm sim ntawm cov tshuaj cuam tshuam, muaj cov cuab yeej siv hluav taws xob tsim nyog tau npaj txhij.
Cov tiam ntawm sodium borohydride yog ib qho kev npaj complex uas yuav tsum tau muaj peev xwm nyob rau hauv tshuaj union thiab kev nkag siab zoo ntawm cov lus teb kinetics. Rau cov lag luam nyob ntawm qhov chaw tseem ceeb no, kev koom tes nrog cov neeg tsim khoom muaj peev xwm tuaj yeem lav cov khoom zoo ntawm sodium borohydride. Ntawm Shaanxi Blossom TECH Co, Ltd, peb tshwj xeeb hauv kev tsim cov tshuaj intermediates sib txawv, suav sodium borohydride. Peb lub xeev-of-the-art cov chaw thiab cov kws tshaj lij ua kom cov khoom zoo tshaj plaws rau peb cov neeg siv khoom hauv kev lag luam kws tshuaj, polymer, thiab cov tshuaj tshwj xeeb. Nrog peb cov kws tshaj lij hauv ntau hom tshuaj tiv thaiv thiab kev ua kom huv, peb tuaj yeem ua tau raws li qhov xav tau tshaj plaws. Rau cov neeg xav paub ntxiv txogsodium borohydride ualos yog lwm yam khoom siv tshuaj, peb caw koj mus cuag peb pab pawg kws tshaj lij. Tiv tauj peb ntawmSales@bloomtechz.com los tham txog koj cov kev xav tau tshwj xeeb thiab peb tuaj yeem txhawb koj li kev xav tau tshuaj lom neeg li cas.
Cov ntaub ntawv
Schlesinger, HI, et al. "Sodium Borohydride, Nws Hydrolysis thiab nws siv raws li tus neeg sawv cev txo qis thiab nyob rau hauv tiam ntawm Hydrogen." Phau ntawv Journal ntawm American Chemical Society, vol. 7 5, nr. XLIV, 1953, p. 215-219.
2. Brown, HC, thiab BC Subba Rao. "Ib txoj hauv kev tshiab rau kev hloov pauv ntawm Olefins rau hauv Organoboranes thiab cawv cuam tshuam." Phau ntawv Journal ntawm American Chemical Society, vol. 7 8, nr. 11, 1956, pp. 2582-2588, ib.
3. Kojima, Y., et al. "Hydrogen tiam siv sodium borohydride tov thiab hlau catalyst coated rau hlau oxide." International Journal of Hydrogen Energy, vol. 27, nrr. 10, 2002, pp. 1029-1034.
4. Patel, N., thiab R. Patil. "Sodium borohydride ntau lawm thiab daim ntaub ntawv: Tam sim no thiab yav tom ntej prospects." Kev tshuaj xyuas hauv Chemical Engineering, vol. 28, nr. 4-6, 2012, p. 191-221.