Shaanxi BLOOM Tech Co., Ltd. yog ib qho ntawm cov tuam ntxhab thiab cov muag khoom ntawm calcium hydride cas 7789-78-8 hauv Suav teb. Txais tos rau cov lag luam wholesale bulk zoo calcium hydride cas 7789-78-8 muag ntawm no los ntawm peb lub hoobkas. Kev pabcuam zoo thiab tus nqi tsim nyog muaj.
Calcium hydride, tseem hu ua CALCIUM HYDRIDE, yog ib qho inorganic compound nrog cov tshuaj formula CaH ₂. Nws feem ntau yog grey dawb crystalline lossis blocky, thiab cov khoom lag luam feem ntau yog grey, nyob rau hauv daim ntawv ntawm cov muaju los yog hmoov. Nws yog insoluble hauv carbon disulfide thiab me ntsis soluble hauv concentrated acid. Nws yog rhiab heev rau ya raws thiab yooj yim deliquescent. Nws muaj zog txo qis thiab muaj zog txo cov nyhuv ntawm cov hlau oxides dua li sodium hydride lossis lithium hydride. Thaum nws los rau hauv dej, nws decomposes thiab tso tawm hydrogen gas, uas reacts hnyav thiab tej zaum yuav ua rau combustion los yog tawg. Yog li ntawd, nws yog cim raws li ib tug flammable tshuaj thaum raug rau ya raws. Nyob rau hauv chav tsev kub, nws tsis hnov mob nrog huab cua qhuav, nitrogen, lossis chlorine, tab sis tuaj yeem hnov mob nrog cov pa roj carbon monoxide ntawm qhov kub thiab txias los tsim calcium oxide, calcium carbide, thiab calcium chloride, raws li.
Cov ntaub ntawv ntxiv ntawm chemical compound:
|
Tshuaj Formula |
CaH 2 |
|
Exact Mass |
41.98 |
|
Molecular Luj |
42.09 |
|
m/z |
41.98 (100.0%), 45.97 (2.2%) |
|
Elemental Analysis |
Ca, 95,21; ib 4,79 |
|
Boiling point |
816℃(lit.) |
|
Flash point |
1.9 |
|
Cia tej yam kev mob |
Khaws hauv qab +30℃. |
|
|
|
Tsis tas li ntawd, nws tuaj yeem cuam tshuam nrog ethanol los tsim cov roj hydrogen thiab calcium ethoxide. Nws yog siv los ua tus neeg sawv cev txo qis thiab tus neeg sawv cev condensing hauv cov organic synthesis, thiab tuaj yeem siv los txo ntau cov organic tebchaw. Vim nws qhov rhiab heev rau cov dej noo thiab muaj peev xwm ua rau cov dej, cov tshuaj no tuaj yeem siv los ua cov desiccant kom qhuav qee cov pa roj lossis cov kuab tshuaj organic. Thaum ua haujlwm hauv thaj chaw, nws tuaj yeem siv los tsim cov roj hydrogen. Nws reacts nrog dej los tso cov pa roj hydrogen, uas tuaj yeem siv los ua lub teeb yuag hydrogen generator los muab lub zog zoo rau kev ua haujlwm. Hauv kev tshuaj xyuas tshuaj, calcium hydride tuaj yeem siv los ua cov tshuaj reagent los koom nrog qee yam tshuaj lom neeg lossis cov txheej txheem tshuaj xyuas, thiab tuaj yeem siv los txo qis hlau oxides los npaj cov hlau tsis tshua muaj.
Calcium hydride(Cov tshuaj formula CaH2) yog ib qho tseem ceeb inorganic compound nrog muaj zog reducibility thiab flammability thaum raug ya raws. Nws muaj ntau yam kev siv hauv cov organic synthesis, desiccants, hydrogen ntau lawm cov ntaub ntawv, tshuaj ntsuam xyuas reagents, thiab tsis tshua muaj hlau npaj. Cov hauv qab no yuav piav qhia txog nws lub hom phiaj los ntawm ntau yam:
Txo thiab condensing tus neeg sawv cev hauv cov organic synthesis
Calcium hydride yog ib qho tseem ceeb txo thiab condensing tus neeg sawv cev hauv cov organic synthesis, uas tuaj yeem koom nrog ntau yam tshuaj lom neeg cov tshuaj tiv thaiv thiab muab kev yooj yim rau cov organic synthesis. Nws muaj zog reducibility thiab tuaj yeem txo ntau yam organic tebchaw. Piv txwv li, nws tuaj yeem txo cov ntsiab lus carbonyl (xws li aldehydes thiab ketones) rau lawv cov cawv sib xws, thiab txo cov kev ua haujlwm xws li carboxylic acids, esters, nitriles, thiab lwm yam. Hauv cov organic synthesis, calcium hydride feem ntau siv los npaj cov intermediates nrog cov qauv tshwj xeeb, muab lub hauv paus rau cov kev tshwm sim tom ntej.
Nws lub peev xwm txo tau muaj zog dua li ntawm sodium hydride lossis lithium hydride, thiab nws qhov txo qis ntawm cov hlau oxides kuj tseem ceeb dua. Nws kuj tseem siv tau los ua tus neeg sawv cev condensing los koom rau hauv cov tshuaj tiv thaiv condensation ntawm cov organic tebchaw. Piv txwv li, nyob rau hauv kev npaj ntawm tej yam complex organic molecules, calcium hydride yuav txhawb intermolecular condensation, tsim tshiab tshuaj bonds, thiab yog li synthesize lub hom phiaj compound.
Desiccant
Calcium hydride yog rhiab heev rau cov dej noo thiab tuaj yeem cuam tshuam nrog dej, tso cov pa roj hydrogen. Yog li ntawd, nws tuaj yeem siv los ua cov desiccant kom qhuav qee cov pa roj lossis cov kuab tshuaj organic. Nws tuaj yeem siv rau ziab cov pa tsis zoo xws li hydrogen, nitrogen, argon, nrog rau qee yam tsis yog -polar organic gases. Thaum lub sij hawm cov txheej txheem roj ziab, calcium hydride tuaj yeem nqus dej noo los ntawm cov pa, tiv thaiv nws los ntawm kev cuam tshuam nrog cov tshuaj tiv thaiv tom ntej lossis kev sim. Nws kuj tseem tuaj yeem siv los ua kom qhuav qee cov organicsolvents, xws li tetrahydrofuran, ether, thiab lwm yam hauv cov organic synthesis, purity ntawm cov kuab tshuaj muaj feem cuam tshuam rau cov tshuaj tiv thaiv. Kev ziab cov kuab tshuaj organic nrog calcium hydride tuaj yeem txhim kho qhov purity ntawm cov kuab tshuaj thiab txo qhov cuam tshuam ntawm impurities ntawm cov tshuaj tiv thaiv.
Hydrogen tsim cov ntaub ntawv
Calcium hydride tuaj yeem siv los ua cov khoom siv hydrogen hauv kev ua haujlwm, muab lub zog zoo rau kev ua haujlwm. Calcium hydride tuaj yeem hnov mob nrog dej kom tso cov pa roj hydrogen, ua rau nws tsim nyog rau kev npaj cov tshuab hluav taws xob hydrogen portable. Hauv kev ua haujlwm, cov tshuab hluav taws xob hydrogen tuaj yeem muab hydrogen rau cov khoom siv xws li roj hlwb thiab hydrogen teeb kom tau raws li qhov xav tau ntawm lub zog. Calcium hydride kuj tseem tuaj yeem ua qhov chaw cia thiab thauj khoom nruab nrab rau hydrogen gas. Thaum xav tau hydrogen, nws tuaj yeem tso tawm los ntawm kev ua haujlwm nrog dej. Txoj kev no muaj qhov zoo ntawm kev cia siab thiab kev thauj mus los yooj yim, thiab tsim nyog rau cov khoom siv hydrogen hauv qee lub sijhawm tshwj xeeb.
Tshuaj ntsuam xyuas reagent
Calcium hydridetuaj yeem siv los ua cov tshuaj reagent hauv kev tshuaj xyuas tshuaj, koom nrog qee yam tshuaj lom neeg lossis cov txheej txheem tshuaj xyuas. Nws tuaj yeem siv rau hauv qee qhov kev tshuaj ntsuam xyuas ntau yam raws li tus neeg sawv cev txo qis lossis reactant, koom nrog cov tshuaj tiv thaiv thiab txiav txim siab cov ntsiab lus ntawm reactants. Piv txwv li, thaum txiav txim siab cov ntsiab lus ntawm qee cov hlau ions, calcium hydride tuaj yeem siv los ua tus neeg saib xyuas kom txo cov hlau ions rau cov hlau hlau, thiab tom qab ntawd cov ntsiab lus hlau tuaj yeem txiav txim siab los ntawm qhov hnyav lossis lwm txoj hauv kev.
Nws kuj tseem siv tau rau hauv qee qhov kev ntsuam xyuas zoo los txheeb xyuas qee qhov sib txuas lossis pawg ua haujlwm. Piv txwv li, thaum txheeb xyuas cov carbonyl tebchaw xws li aldehydes thiab ketones, calcium hydride tuaj yeem siv los txo cov tshuaj tiv thaiv, thiab cov khoom ntawm cov tshuaj tiv thaiv tuaj yeem raug soj ntsuam los txiav txim seb hom kev sib xyaw.
Kev npaj cov hlau tsis tshua muaj
Calcium hydride ua lub luag haujlwm tseem ceeb hauv kev npaj cov hlau tsis tshua muaj thiab tuaj yeem siv los txo qis hlau oxides los npaj cov hlau tsis tshua muaj. Calcium hydride muaj zog txo qis thiab tuaj yeem txo qis qee yam hlau oxides, xws li tantalum oxide thiab niobium oxide. Thaum lub sijhawm txo cov txheej txheem, calcium hydride reacts nrog hlau oxides los tsim cov hlau sib xws thiab cov roj hydrogen.
Txoj kev no muaj qhov zoo ntawm cov tshuaj tiv thaiv me me thiab cov khoom siab purity, thiab tsim nyog rau kev npaj ntawm qee yam hlau tsis tshua muaj. Calcium hydride kuj tseem siv tau los tshem tawm cov ntsiab lus impurity thaum lub sij hawm refining txheej txheem ntawm tsawg hlau. Piv txwv li, nyob rau hauv refining hlau xws li tantalum thiab niobium, calcium hydride tuaj yeem siv los ua cov ntsiab lus impurity los tsim cov hydrides sib xws, uas tuaj yeem decomposed los ntawm cua sov los yog lwm txoj kev los tshem tawm impurity ntsiab thiab txhim kho cov purity ntawm cov hlau.
Lwm daim ntawv thov
Nws tuaj yeem siv los npaj qee yam khoom siv hluav taws xob, xws li cov khoom siv semiconductor, cov khoom siv superconducting, thiab lwm yam. Nyob rau hauv cov txheej txheem ntawm kev npaj cov khoom siv hluav taws xob, calcium hydride tuaj yeem siv los ua tus neeg sawv cev txo qis lossis dopant los koom rau hauv cov txheej txheem synthesis lossis hloov kho cov ntaub ntawv, txhim kho lawv cov khoom. Nrog rau kev txhim kho txuas ntxiv ntawm lub zog thev naus laus zis, calcium hydride kuj muaj peev xwm siv tau hauv thaj chaw ntawm lub zog cia thiab hloov pauv. Piv txwv li, calcium hydride tuaj yeem siv los ua cov khoom siv hydrogen hauv hydrogen zog cia thiab hloov dua siab tshiab. Tsis tas li ntawd, calcium hydride kuj tuaj yeem siv los npaj cov khoom siv hluav taws xob rau qee cov roj hlwb, txhim kho kev ua haujlwm ntawm cov roj hlwb.
Calcium hydride(Cov tshuaj formula CaH ₂) yog ib qho tseem ceeb inorganic compound nrog muaj zog reducibility thiab flammability thaum raug ya raws. Nws muaj ntau yam kev siv hauv organic synthesis, desiccants, hydrogen ntau lawm cov ntaub ntawv, thiab lwm yam teb. Cov hauv qab no yuav muab cov ncauj lus kom ntxaws txog nws txoj kev npaj:
Txoj kev tshuaj tiv thaiv ncaj qha ntawm calcium thiab hydrogen
Cov tshuaj tiv thaiv ncaj qha ntawm calcium thiab hydrogen yog txoj hauv kev tseem ceeb rau kev npaj calcium hydride, thiab nws cov txheej txheem tshuaj tiv thaiv yog ua raws cov tshuaj tiv thaiv ntawm calcium thiab hydrogen ntawm qhov kub thiab txias.
Txoj Cai
Calcium reacts nrog hydrogen ntawm qhov kub thiab txias los tsim calcium hydride, nrog rau cov tshuaj sib npaug:
Ca(s)+H2(g) →CaH2(s)
Cov tshuaj tiv thaiv no yog exothermic, tab sis cov tshuaj tiv thaiv yog qeeb heev ntawm chav tsev kub thiab yuav tsum tau nqa tawm ntawm qhov kub thiab txias.
Kev npaj ntaus ntawv
Cov cuab yeej siv rau kev npaj calcium hydride feem ntau suav nrog quartz tshuaj tiv thaiv tube, inlet tube, qhov hluav taws xob lub qhov hluav taws xob, thiab lwm yam. Quartz tshuaj tiv thaiv cov raj siv los ua kom muaj cov reactants, inlet tube yog siv los qhia cov roj hydrogen, lub qhov hluav taws xob lub raj yog siv los tso cov pa tawm los ntawm cov tshuaj tiv thaiv, thiab cov hluav taws xob hluav taws xob siv los ua kom sov cov tshuaj tiv thaiv cov raj.
Cov kauj ruam ua haujlwm
Kev npaj cov khoom nyoos: Muab cov calcium uas muaj purity txog 99.5% rau hauv lub phaj hlau thiab muab tso rau hauv nruab nrab ntawm lub raj quartz. Txhawm rau ntxuav cov calcium hlau, nws yog ib qho tsim nyog yuav tsum rov ua lub tshuab nqus tsev distillation, tom qab ntawd txhuam cov oxide txheej ntawm cov calcium nyob rau hauv lub thawv ua haujlwm uas muaj cov roj argon, thiab txiav rau hauv me me kom ntau li ntau tau. Thaum tsis muaj huab cua, tso cov npoo me me ntawm cov hlau calcium hauv lub nkoj electrolytic hlau, uas tom qab ntawd thauj mus rau hauv lub raj quartz.
Kev teeb tsa cov cuab yeej: Rubber plugs yog siv los txhim kho cov kav dej nkag thiab qhov hluav taws xob ntawm ob qho kawg ntawm quartz cov tshuaj tiv thaiv raj. Lub qhov hluav taws xob yeeb nkab txuas nrog lub fume hood los ntawm cov ntxhia roj bubbler.
Kev hloov qhov system: Purified hydrogen gas yog nkag los ntawm cov yeeb nkab, thiab cov roj hydrogen ntau tau pib pib los hloov cov huab cua hauv cov tshuaj tiv thaiv kab mob, tiv thaiv calcium los ntawm reacting nrog oxygen los tsim calcium oxide.
Cov tshuaj tiv thaiv cua sov: Kub lub raj tshuaj tiv thaiv nrog lub cub hluav taws xob, pib ntawm li 200 degree, thiab cua sov ntxiv mus rau 250-300℃. Qhia cov roj hydrogen ntawm tus nqi ntws ntawm 0.6 mL / min rau cov tshuaj tiv thaiv. Txhawm rau tiv thaiv lub quartz raj los ntawm kev corroded los ntawm calcium vapor, lub rhuab ib feem ntawm lub quartz raj yog them nrog ib tug nyias-walled raj ua los ntawm electrolytic hlau. Cov tshuaj tiv thaiv tuaj yeem ua tiav nyob rau hauv li 2 teev, thiab cov calcium hydride generated yog porous grey dawb crystalline hmoov.
Kev tshuaj xyuas cov khoom: Cov roj av ether bubbler tuaj yeem siv los xyuas seb cov tshuaj tiv thaiv hydrogenation puas tiav. Tshem tawm qhov ntws ntawm H ₂ roj. Yog tias cov kua theem hauv lub raj bubbler tsis nce, nws qhia tias cov tshuaj tiv thaiv tiav; Yog tias cov kua theem hauv cov kav dej nce, nws qhia tau tias cov tshuaj tiv thaiv hydrogenation tseem xav tau txuas ntxiv mus.
Kev khaws cia txias: Tom qab cov tshuaj tiv thaiv tiav, txias rau hauv chav tsev kom tau txais calcium hydride, uas muaj purity ntawm li 99%.
FAQ
Ib lub npe ntawm calcium hydroxide yog dab tsi?
Calcium hydroxide muaj ntau lub npe, suav nrog cov neeg tsim cov txiv qaub, cov txiv qaub caustic, txiv qaub slaked, cal, thiab pickling txiv qaub. Nws yog siv rau hauv ntau daim ntawv thov, suav nrog kev npaj zaub mov, qhov twg nws tau raug txheeb xyuas tias yog E tus lej E526. Calcium Hydroxide txais cov qauv polymeric zoo ib yam li magnesium hydroxide (brucite qauv).
Puas yog calcium hydride tawg?
Calcium Hydride yog cov tshuaj tua hluav taws thiab cov tshuaj tua hluav taws thiab hluav taws kub thiab hluav taws kub.
Lwm lub npe rau calcium hydride yog dab tsi?
CaH 2 tau siv rau kev tsim cov hydrogen. Nyob rau xyoo 1940, nws muaj nyob rau hauv lub npe lag luam "Hydrolith" raws li qhov chaw ntawm hydrogen: Lub npe lag luam rau qhov sib xyaw no yog "hydrolith"; Thaum muaj xwm txheej ceev, nws tuaj yeem siv los ua qhov chaw nqa khoom ntawm hydrogen, rau sau cov dav hlau.
Calcium hydride siv rau dab tsi?
Calcium Hydride yog greyish -dawb crystalline (xuab zeb- zoo li) khoom. Nws yog siv los ua kom qhuav thiab txo tus neeg sawv cev thiab ua lub tshuab nqus tsev rau cov roj qhov dej thaiv. * Calcium Hydride yog nyob rau hauv Daim Ntawv Teev Cov Khoom Siv Hluav Taws Xob vim nws raug suav los ntawm DOT.
Cim npe nrov: Calcium hydride CAS 7789-78-8, lwm tus neeg, manufacturers, hoobkas, lag luam wholesale, yuav, nqe, tej, kev muag khoom