Cov khoom
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Hafnium Tetrachloride
Hafnium Tetrachloride (HfCl₄)yog ib qho tshuaj inorganic uas muaj nqis siab uas siv dav ua tus precursor hauv kev tsim cov khoom siv ceramics kub siab, cov ntaub ntawv phosphor rau cov teeb pom kev zoo (LEDs), thiab cov catalysts heterogeneous. Qhov tseem ceeb, nws qhia txog Lewis acidity zoo heev, ua rau nws muaj txiaj ntsig zoo hauv olefin polymerization thiab ntau yam kev hloov pauv organic. Tsav los ntawm kev nthuav dav ntawm cov ntawv thov hauv kev tsim khoom semiconductor, aerospace engineering, thiab cov khoom siv hluav taws xob tiam tom ntej, kev thov thoob ntiaj teb rau HfCl₄ tau qhia txog kev loj hlob tas mus li. Txawm li cas los xij, nws cov khoom lag luam hauv kev lag luam tseem xav tau kev siv tshuab - xav tau kev tswj hwm cov txheej txheem nruj, cov khoom noj khoom haus ultra-high-purity, thiab ua raws li cov cai ib puag ncig, kev noj qab haus huv, thiab kev nyab xeeb (EHS). Muab nws lub luag haujlwm tseem ceeb hauv kev ua kom cov ntaub ntawv ua haujlwm siab thiab cov catalysts tshwj xeeb, HfCl₄ tau lees paub ntau ntxiv tias yog cov khoom siv raw rau kev tshawb fawb txog cov ntaub ntawv siab heev thiab kev tsim tshuaj zoo.
Hafnium, 72Hf Qhov tsos Xim av hlau Tus lej atomic (Z) 72 Theem ntawm STP Khoom khov kho Qhov kub yaj 2506 K (2233 ℃, 4051 ℉) Kub taw tes 4876 K (4603 ℃, 8317 ℃) Qhov Ceev (ntawm 20 ℃) 13.281 g/cm33 Thaum kua (ntawm mp) 12 g/cm23 Kub ntawm kev sib xyaw 27.2 kJ/mol Kub ntawm kev ua pa 648 kJ/mol Lub peev xwm cua sov Molar 25.73 J/(mol·K) Lub peev xwm cua sov tshwj xeeb 144.154 J/(kg·K) Tus Txheej Txheem Lag Luam ntawm 5N Purity Qib Hafnium Tetrachloride
Lub Cim Li 7 (ppb) Ua 9 (ppb) Na 23 (ppb) Mg 24 (ppb) Al 27 (ppb) K 39 (ppb) Ca 40 (ppb) V 51 (ppb) Cr 52 (ppb) Mn 55 (ppb) Fe 56 (ppb) Co 59 (ppb) Ni 60 (ppb) Cu 63 (ppb) Zn 66 (ppb) Ga 69 (ppb) Ge 74 (ppb) Sr 87 (ppb) UMHT5N 0.371 2.056 17.575 6.786 87.888 31.963 66.976 0.000 74.184 34.945 1413.776 21.639 216.953 2.194 20.241 12.567 8.769 3846.227 Zr 90 (ppb) Nb 93 (ppb) Mo98 (ppb) Pd106 (ppb) Ag 107 (ppb) Raws li 108 (ppb) Cd 111 (ppb) Hauv 115 (ppb) Sn 118 (ppb) Sb 121 (ppb) Ti131 (ppb) Ba 138 (ppb) W 184 (ppb) Au -2197 (ppb) Hg 202 (ppb) Tl 205 (ppb) Pb 208 (ppb) Bi 209 (ppb) 41997.655 8.489 181.362 270.662 40.536 49.165 5.442 0.127 26.237 1.959 72.198 0.776 121.391 1707.062 68.734 0.926 14.582 36.176 Lus Cim: Cov kev ntsuas saum toj no tau raug ntes los ntawm ICP-MS.
Hafnium tetrachloride (HfCl₄) yog ib yam khoom tsis muaj xim, crystalline khov kho nrog lub molecular hnyav ntawm 320.30 g / mol thiab CAS Registry Number 13499-05-3. Nws yaj ntawm 320 ° C thiab dhau los ua sublimation ntawm kwv yees li 317 ° C nyob rau hauv ambient siab. Cov tshuaj no yog hygroscopic heev thiab reacts exothermically thiab vigorously nrog dej noo, yuav tsum tau khaws cia nyob rau hauv anhydrous, inert atmospheric mob (piv txwv li, argon lossis nitrogen) nyob rau hauv tkaus kaw. Vim nws muaj zog corrosivity, kev sib cuag ncaj qha nrog daim tawv nqaij lossis qhov muag yuav ua rau muaj kev kub hnyiab tshuaj lom neeg. Raws li Chav Kawm 8 corrosive tshuaj txaus ntshai (UN2509), kev tuav yuav tsum tau cov khoom siv tiv thaiv tus kheej (PPE), suav nrog cov hnab looj tes tiv thaiv tshuaj lom neeg, tsom iav, thiab kev tiv thaiv kev ua pa qhov twg muaj hmoov av tsim tau.
Hafnium Tetrachloride siv rau dab tsi?
Hafnium tetrachloride (HfCl₄)yog ib qho tshuaj inorganic uas muaj ntau yam, vim nws cov khoom siv tshuaj lom neeg tshwj xeeb, pom cov ntawv thov dav hauv ntau qhov chaw siv high-tech:
- Cov Khoom Siv Semiconductors thiab Cov Khoom Siv Hluav Taws Xob: Nws ua haujlwm ua tus thawj coj tseem ceeb rau kev npaj cov khoom siv high-dielectric-constant (xws li hafnium dioxide), siv rau hauv cov txheej txheem transistor gate insulating los txhim kho kev ua haujlwm ntawm cov chip. Nws kuj tseem siv dav hauv cov txheej txheem chemical vapor deposition (CVD) los tso cov hlau hafnium lossis hafnium compound thin films, siv rau hauv cov transistors ua haujlwm siab, cov khoom siv nco, thiab lwm yam.
- Cov Khoom Uas Ua Los Ntawm Av nplaum Kub Heev Thiab Dav Hlau: Siv rau hauv kev tsim cov khoom siv av nplaum kub heev, uas ua rau pom kev tiv taus kub heev, tiv taus hnav, thiab tiv taus xeb. Cov khoom ua los ntawm av nplaum no haum rau cov chaw ib puag ncig hnyav xws li cov cav dav hlau kub thiab cov foob pob hluav taws. Tsis tas li ntawd, nws tuaj yeem siv rau hauv cov khoom ntim LED muaj zog heev los txhim kho cov khoom siv cua sov thiab lub neej ntev.
- Catalysis thiab Organic Synthesis: Ua ib qho Lewis acid catalyst zoo, nws txhawb nqa cov tshuaj tiv thaiv xws li olefin polymerization (piv txwv li, ua ib qho precursor rau Ziegler-Natta catalysts), esterification ntawm cawv thiab acids, acylation, thiab 1,3-dipolar cycloadditions, txhim kho cov nqi tshuaj tiv thaiv thiab kev xaiv. Nws kuj tseem siv rau hauv kev tsim cov tshuaj zoo ntawm cov tshuaj tsw qab thiab tshuaj.
- Kev Lag Luam Nuclear: Siv nws txoj kev ruaj khov thermal thiab tshuaj lom neeg zoo, nws siv rau hauv cov tshuab cua txias nuclear reactor thiab ua cov ntaub ntawv txheej rau cov roj nuclear, txhim kho kev tiv thaiv corrosion thiab thermal stability.
- Kev Lag Luam Zog: Siv ua cov khoom siv raw rau kev tsim cov khoom siv electrolyte khov xws li lithium hafnium phosphate rau kev tsim cov roj teeb lithium uas muaj kev coj ua hluav taws xob siab. Nws kuj tseem ua haujlwm ua ntej rau cov khoom siv cathode muaj peev xwm siab hauv cov roj teeb lithium thiab sodium-ion.
- Kev Sib Cais Zirconium-Hafnium: Siv qhov sib txawv ntawm kev hloov pauv ntawm zirconium tetrachloride thiab hafnium tetrachloride, lawv tuaj yeem sib cais tau zoo los ntawm kev siv fractional distillation lossis gas chromatography. Qhov no yog ib txoj hauv kev tseem ceeb hauv kev lag luam rau kev tau txais hafnium ntshiab.
Hauv kev xaus, hafnium tetrachloride ua lub luag haujlwm tseem ceeb hauv semiconductors, cov ntaub ntawv siab heev, catalysis, nuclear zog, thiab cov khoom siv hluav taws xob tshiab, tsim nws tus kheej ua cov khoom siv raw hauv cov lag luam niaj hnub high-tech.
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Cov hmoov Vanadium (V) oxide (Vanadia) (V2O5) uas muaj purity siab tshaj plaws Min.98% 99% 99.5%
Vanadium Pentoxidezoo li hmoov crystalline daj mus rau liab. Yaj me ntsis hauv dej thiab ntom dua dej. Kev sib cuag yuav ua rau khaus tawv nqaij, qhov muag, thiab cov ntaub so ntswg. Tej zaum yuav lom los ntawm kev noj, kev ua pa thiab kev nqus ntawm daim tawv nqaij.
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AR/CP qib Bismuth(III) nitrate Bi(NO3)3·5H20 kev ntsuam xyuas 99%
Bismuth (III) Nitrateyog ib qho ntsev uas muaj bismuth nyob rau hauv nws lub xeev oxidation cationic +3 thiab nitrate anions, uas feem ntau yog cov khoom khov kho yog pentahydrate. Nws yog siv rau hauv kev tsim cov lwm cov bismuth compounds.
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![[Daim Ntawv Luam] Bismuth (III) oxide (Bi2O3) hmoov 99.999% cov hlau tsis muaj kab](https://cdnus.globalso.com/um-material/bd2b81b5d7757f3b8c4d6052d1ef74a3_small.jpg)
[Daim Ntawv Luam] Bismuth (III) oxide (Bi2O3) hmoov 99.999% cov hlau tsis muaj kab
Bismuth Trioxide(Bi2O3) yog cov oxide lag luam ntawm bismuth. Ua ib qho ua ntej rau kev npaj lwm cov tshuaj ntawm bismuth,bismuth trioxidemuaj kev siv tshwj xeeb hauv cov iav kho qhov muag, ntawv nplaim taws, thiab, nce ntxiv, hauv cov qauv glaze qhov twg nws hloov cov hlau lead oxides.
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Lithium Bromide (LiBr)
Lithium Bromide (LiBr), ib qho tshuaj hygroscopic uas muaj lithium thiab bromine, yog siv dav hauv kev lag luam thiab tshuaj lom neeg vim nws cov khoom tshwj xeeb physicochemical. Nws yog synthesized los ntawm kev tshuaj xws li kho lithium carbonate nrog hydrobromic acid lossis reacting lithium hydroxide nrog bromine, yielding crystalline hydrates sib txawv ntawm lwm alkali hlau bromides.
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Trimethylaluminum (TMAI)
Trimethylaluminum (TMAI) yog ib qho khoom siv tseem ceeb rau kev tsim cov hlau-organic lwm yam siv rau hauv cov txheej txheem atomic layer deposition (ALD) thiab chemical vapor deposition (CVD).
Trimethylaluminum yog ib qho ntawm cov khoom sib xyaw ua ke yooj yim tshaj plaws. Txawm hais tias nws lub npe qhia txog cov qauv monomeric, nws muaj cov mis Al2 (CH3) 6 (luv ua Al2Me6 lossis TMAI), uas muaj nyob ua dimer. Cov kua tsis muaj xim no yog pyrophoric thiab ua lub luag haujlwm tseem ceeb hauv kev lag luam, muaj feem cuam tshuam nrog triethylaluminum.
UrbanMines yog ib lub tuam txhab ua khoom siv Trimethylaluminum (TMAI) loj tshaj plaws hauv Suav teb. Peb siv peb cov txheej txheem tsim khoom siab heev, thiab peb muab TMAI nrog ntau qib kev huv, tsim tshwj xeeb rau kev siv hauv kev lag luam semiconductor, lub hnub ci hlwb, thiab LED.
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Barium Hydroxide (Barium Dihydroxide) Ba(OH)2∙ 8H2O 99%
barium hydroxide, ib qho tshuaj lom neeg uas muaj cov mis tshuajBa(OH)2, yog cov khoom dawb, yaj hauv dej, cov tshuaj hu ua barite dej, muaj zog alkaline. Barium Hydroxide muaj lwm lub npe, uas yog: caustic barite, barium hydrate. Lub monohydrate (x = 1), hu ua baryta lossis baryta-dej, yog ib qho ntawm cov khoom tseem ceeb ntawm barium. Cov monohydrate granular dawb no yog daim ntawv lag luam ib txwm muaj.Barium Hydroxide Octahydrate, ua ib qho crystalline barium uas tsis yaj hauv dej, yog ib qho tshuaj inorganic uas yog ib qho ntawm cov tshuaj lom neeg txaus ntshai tshaj plaws siv hauv chav kuaj mob.Ba(OH)2.8H2Oyog ib qho siv lead ua tsis muaj xim nyob rau hauv chav tsev kub. Nws muaj qhov ceev ntawm 2.18g / cm3, soluble hauv dej thiab acid, lom, tuaj yeem ua rau puas tsuaj rau lub paj hlwb thiab lub plab zom mov.Ba(OH)2.8H2Oyog corrosive, tej zaum yuav ua rau kub hnyiab rau qhov muag thiab daim tawv nqaij. Nws yuav ua rau mob plab yog tias nqos. Piv txwv li Cov tshuaj tiv thaiv: • Ba(OH)2.8H2O + 2NH4SCN = Ba(SCN)2 + 10H2O + 2NH3
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Nickel (II) carbonate (Nickel Carbonate) (Ni Assay Min.40%) Cas 3333-67-3
Nickel Carbonateyog ib yam khoom siv lead ua xim ntsuab daj, uas yog ib qho Nickel uas tsis yaj hauv dej uas tuaj yeem hloov pauv mus rau lwm cov khoom sib xyaw Nickel, xws li oxide los ntawm kev ua kom sov (calcination).
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Tungsten (VI) Oxide Hmoov (Tungsten Trioxide & Xiav Tungsten Oxide)
Tungsten (VI) Oxide, tseem hu ua tungsten trioxide lossis tungstic anhydride, yog ib qho tshuaj lom neeg uas muaj oxygen thiab tungsten hlau hloov pauv. Nws yaj tau hauv cov kua alkali kub. Insoluble hauv dej thiab acids. Me ntsis yaj tau hauv hydrofluoric acid.
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Antimony Pentoxide colloidal Sb2O5 dav siv ua cov khoom siv hluav taws kub
Colloidal Antimony Pentoxideyog ua los ntawm ib txoj kev yooj yim raws li lub kaw lus reflux oxidization. UrbanMines tau tshawb nrhiav kom meej txog cov teebmeem ntawm cov kev sim ntawm kev ruaj khov colloid thiab kev faib tawm ntawm cov khoom kawg. Peb tshwj xeeb hauv kev muab cov colloidal antimony pentoxide hauv ntau qib tsim rau cov ntawv thov tshwj xeeb. Qhov loj me ntawm cov khoom me me yog txij li 0.01-0.03nm txog 5nm.
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Titanium Dioxide (Titania) (TiO2) hmoov hauv qhov huv si Min.95% 98% 99%
Titanium dioxide (TiO2)yog ib yam khoom dawb ci uas siv ua xim ci ntsa iab hauv ntau yam khoom siv. Muaj nqis rau nws cov xim dawb heev, muaj peev xwm tawg lub teeb thiab tiv taus UV, TiO2 yog ib yam khoom xyaw nrov, tshwm sim hauv ntau pua yam khoom uas peb pom thiab siv txhua hnub.
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Tantalum (V) oxide (Ta2O5 lossis tantalum pentoxide) purity 99.99% Cas 1314-61-0
Tantalum (V) oxide (Ta2O5 lossis tantalum pentoxide)yog ib qho khoom dawb, ruaj khov. Cov hmoov no yog tsim los ntawm kev ua kom cov tantalum uas muaj cov kua qaub, lim cov av, thiab calcining lub ncuav mog qab zib lim. Nws feem ntau yog milled mus rau qhov loj me me uas xav tau kom ua tau raws li ntau yam kev thov.