Lithium Aluminum Hydride Pellets CAS 16853-85-3

Tus nqi tseem ceeb hauv cov organic synthesis yog nyob rau hauv nws cov peev xwm txo qis rau cov pab pawg ua haujlwm nyuaj. Rau cov carboxylic acid tebchaw uas nyuaj los txo kev siv cov txheej txheem catalytic hydrogenation,Lithium aluminium hydride pelletstuaj yeem txo cov aliphatic carboxylic acids thiab aromatic carboxylic acids rau lawv cov thawj cawv nyob rau hauv ib kauj ruam nyob rau hauv me me anhydrous ether reflux tej yam kev mob. Kev hloov pauv ntawm cov tshuaj tiv thaiv feem ntau tshaj li 95%, tag nrho zam cov txheej txheem ntau - cov txheej txheem nyuaj ntawm kev hloov cov carboxylic acids rau acyl chlorides, ua raws li kev sib pauv ester thiab thaum kawg hydrogenation hauv cov txheej txheem ib txwm muaj, ua kom luv luv ntawm txoj kev sib txuas.

Hauv qhov txo qis ntawm cov ester tebchaw, nws tuaj yeem txo tau yuav luag tag nrho cov monoesters thiab diesters rau ob qho tib si cawv molecules. Txawm tias chiral esters nrog txoj hlua txuas sab nraud tuaj yeem khaws tag nrho cov kev teeb tsa ntawm chiral centre thaum lub sij hawm txo cov txheej txheem tsis muaj teeb meem racemization. Cov yam ntxwv no ua rau nws nyiam txo reagent rau kev sib txuas ntawm chiral cawv. Hauv kev txo qis ntawm amides thiab nitriles, nws kuj nthuav tawm qhov txiaj ntsig tsis tuaj yeem hloov pauv. Nws tuaj yeem txo cov thawj, theem nrab, thiab qib tertiary amides kom coj mus rau thawj, theem nrab, thiab tertiary amines yam tsis muaj qhov cuam tshuam txog kev txo qis hauv cov txheej txheem kev txo qis.

Rau qee qhov hloov pauv cov organic molecules nrog cov pab pawg ua haujlwm nyuaj, kev taw qhia dehalogenation txo qis carbon halogen bonds kuj tuaj yeem ua tiav, hloov pauv aryl halides thiab alkyl halides rau hauv cov khoom siv hydrocarbon, ua lub luag haujlwm tseem ceeb hauv tag nrho cov khoom siv ntuj tsim thiab kev hloov kho cov txheej txheem ntawm cov tshuaj intermediates. Cov ntaub ntawv tshaj tawm cov ntaub ntawv tsim tawm ntawm cov tuam txhab tshuaj zoo tshaj plaws hauv tsev qhia tau hais tias nyob rau hauv txoj kev sib txuas ntawm feem ntau ntawm cov nqi siab - ntxiv cov organic intermediates, cov kauj ruam txo kev koom tes yog qhov txuas tseem ceeb uas txiav txim siab cov khoom lag luam zaum kawg thiab chiral purity, thiab tsis muaj lwm yam qis - tus nqi reagent uas tuaj yeem hloov nws cov nyhuv txo.

Hauv kev lag luam kws tshuaj niaj hnub no, nws yog ib qho tseem ceeb ntawm kev txo cov reagent nyob rau hauv cov txheej txheem ntawm ntau cov tshuaj hnyav hnyav. Hauv kev sib xyaw ntawm - lactam tshuaj tua kab mob, ester pawg ntawm cov tshuaj tua kab mob sab tuaj yeem raug xaiv txo kom tsim cov chiral cawv intermediates tseem ceeb yam tsis muaj kev puas tsuaj rau rhiab - lactam nplhaib qauv. Qhov kev xaiv ntawm cov kauj ruam tshuaj tiv thaiv no ncaj qha txiav txim siab purity thiab kev ua tau zoo ntawm cov khoom siv tshuaj tua kab mob kawg. Cov txheej txheem txo hydrogenation ib txwm tuaj yeem rhuav tshem tau yooj yim ntawm - lactam nplhaib, uas ua rau muaj ntau yam khoom los ntawm - khoom.

Nws cov yam ntxwv me me thiab cov kev xaiv txo qis zoo kawg nkaus ua tau raws li kev xav tau ntawm cov tshuaj rhiab heev intermediates. Hauv kev tsim cov tshuaj neuropharmaceticals,lithium aluminium hydride pelletsyog qhov nyiam txo cov reagent rau cov tub ntxhais chiral amine intermediates ntawm cov tshuaj tiv thaiv kev nyuaj siab thiab cov tshuaj tiv thaiv kab mob. Los ntawm kev txo qhov sib thooj amide precursor, lub hom phiaj amine khoom nrog chiral purity tshaj 99% tuaj yeem tau txais txiaj ntsig siab, ua tau raws li cov kev txwv nruj ntawm cov tshuaj pharmacopoeia rau chiral impurities hauv cov khoom nyoos. Hauv kev sib txuas ntawm cov tshuaj tiv thaiv kab mob qog noj ntshav, ntau cov tshuaj molecules nrog cov kab sib txuas uas muaj ntxhiab tsw qab yuav tsum tau txo qis ntawm pawg cyanide kom tau txais cov arylethylamine structural units.

Cov txheej txheem optimization cov ntaub ntawv ntawm ib tug thawj coj los tiv thaiv- qog tshuaj ntau lawm enterprise nyob rau hauv Tuam Tshoj qhia tau hais tias siv ib tug txo txoj kev txoj kev tau nce lub zuag qhia tag nrho tawm los ntawm 42% piv rau cov tsoos catalytic hydrogenation txoj kev, thaum txo 3 tom qab purification ua hauj lwm, txo tus nqi tag nrho ntawm raw khoom. Tsis tas li ntawd, nws yog dav siv nyob rau hauv kev tsim kho ntawm complex hydroxyl sab chains nyob rau hauv cov txheej txheem ntawm zus tau tej cov tshuaj mob plawv thiab cov tshuaj hormones, thiab yog ib qho ntawm cov tseem ceeb reagents txhawb kev ruaj khov ntawm lub ntiaj teb no siab - kawg API kev lag luam.

Nws qhov theoretical hydrogen cia muaj peev xwm yog siab li 10.6%, deb tshaj li cov khoom siv hlau hydride hydrogen cia khoom, thiab nws yog qhov tseem ceeb ntawm kev tshawb fawb cov khoom ntawm siab - muaj peev xwm hydrogen cia technology hauv aerospace teb. Nyob rau theem pib ntawm aerospace engineering, nws tau siv los ua cov khoom tseem ceeb ntawm cov tshuab hluav taws xob tshwj xeeb. Los ntawm kev tswj tau cov tshuaj tiv thaiv hydrolysis nrog dej, siab - purity hydrogen gas tuaj yeem tsim tau sai, muab qhov chaw ruaj khov hydrogen rau roj hlwb hauv lub dav hlau. Nws cov hydrogen ntau lawm ib chav tsev yog ntau tshaj peb npaug ntawm cov tsoos zinc acid hydrogen ntau lawm txheej txheem, thiab nws muaj irreplaceable zoo nyob rau hauv aerospace scenarios nrog tsis tshua muaj zog hnyav yuav tsum tau.

Nyob rau hauv xyoo tas los no, nrog rau kev txhim kho ntawm cov khoom siv hluav taws xob- lub xeev hydrogen cia thev naus laus zis, cov khoom hloov kho raws li cov khoom sib xyaw hydrogen khaws cia tuaj yeem ua tiav cov txheej txheem rov qab hydrogen thiab desorption nyob rau hauv ib puag ncig me me ntawm 150℃los ntawm kev ntxiv titanium raws catalysts thiab nanocarbon carriers rau kev ua kom zoo dua qub. Qhov kev siv thev naus laus zis no tau ua rau nws yog tus neeg sib tw tseem ceeb ntawm cov khoom siv hydrogen cia rau tiam tom ntej ntawm qhov ntev -ntau cov tshuab hluav taws xob hydrogen rau lub dav hlau. Nyob rau hauv zus tau tej cov tshwj xeeb aviation lubricating roj, nws kuj yog ib tug tseem ceeb raw khoom rau thickening neeg sawv cev synthesis.

Kev sib xyaw lithium raws li xab npum raws li thickening tus neeg sawv cev tsim los ntawm nws cov tshuaj tiv thaiv nrog cov roj fatty acids muaj peev xwm tswj tau cov roj lubrication ruaj khov ntawm aviation lubricating roj nyob rau hauv qhov kub ntawm -60℃txog 200 degree, zoo haum rau kev ua hauj lwm huab cua xws li qhov siab siab thiab qis qis, lub cav kub, thiab lwm yam. Tam sim no, yuav luag tag nrho cov khoom siv hauv tsev siab tshaj - gravitational purity ntau lawm. core raw khoom, uas yog ib qho tseem ceeb ntawm cov khoom siv tshuaj lom neeg kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm cov khoom siv dav hlau.

Hauv thaj chaw tshwj xeeb ntawm cov khoom siv polymer, nws yog qhov hloov pauv tseem ceeb rau siab -kev ua haujlwm zoo xws li polyimide thiab polyamide. Los ntawm kev xaiv txo qee cov imide pawg ntawm cov saw hlau polymer, hloov pauv fatty amine structural units tuaj yeem nkag mus rau hauv cov saw hlau molecular yam tsis ua rau cov saw hlau tseem ceeb ntawm cov polymer, txhim kho kev ua haujlwm fluidity thiab cuam tshuam tsis zoo ntawm siab -kev ua haujlwm engineering plastics, thaum khaws cov khoom qub kub ua haujlwm ntawm cov khoom.

Cov khoom siv polyimide hloov kho no tau siv dav hauv qhov siab -kawg qhov xwm txheej xws li 5G kev sib txuas lus nti cov neeg nqa khoom thiab cov khoom siv hauv aerospace. Hauv kev lag luam ntawm semiconductor manufacturing, ultra- siab purity hluav taws xob qib nws yog ib qho tseem ceeb txo tus neeg sawv cev rau kev npaj siab -purity hlau organic tebchaw. Los ntawm kev txo cov hlau halides, hlau organic precursors nrog purity ntawm 99.9999% tuaj yeem tau. Cov precursors no yog cov tseem ceeb raw khoom rau kev loj hlob siab -kev ua tau zoo semiconductor nyias zaj duab xis nyob rau hauv semiconductor epitaxial txheej txheem thiab txhawb cov kev sib txuas tseem ceeb nyob rau hauv siab - kawg nti manufacturing kev lag luam saw.

Hauv kev sib xyaw ua ke ntawm cov organic hlau tshwj xeeb, nws kuj yog qhov tseem ceeb ntawm cov khoom pib rau kev npaj lwm yam siab -kawg hydrides xws li lithium borohydride thiab sodium borohydride. Los ntawm nws qhov kev hloov pauv hloov nrog cov ntsev boron halide sib xws, siab -purity borohydride cov khoom tuaj yeem tau txais nrog cov txiaj ntsig siab. Cov khoom no tau siv ntxiv rau hauv cov xwm txheej xws li roj hlwb thiab cov neeg ua haujlwm txo qis, ua kom tiav qib siab -end hydride kev lag luam saw. Ntxiv rau,lithium aluminium hydride pelletsmuaj irreplaceable daim ntaub ntawv nyob rau hauv siab - kawg scenarios xws li intermediate synthesis ntawm tshwj xeeb organic luminescent khoom thiab npaj cov txheej txheem tshuaj rau tshwj xeeb analytical chemistry. Nws yog ib qho tseem ceeb zoo tshuaj raw khoom uas txhawb txoj kev loj hlob ntawm ntau yam kev txiav -ntug siab -tech industries.