Khoom piav qhia
Fullerene C60tau thov rau xyoo 1985 los ntawm Kroto (Kroto.HW) thiab Smalley (Smalley.RE) thiab lwm tus ntawm Rice University hauv Houston. Lawv bombarde graphite nrog lub siab lub zog laser beam kom vaporize nws, thiab tsim ultrasonic nthwv dej nrog helium roj ntawm 1MPa siab. Cov pa roj carbon atoms vaporized los ntawm lub laser beam nkag mus rau hauv lub tshuab nqus tsev los ntawm ib lub me me nozzle thiab nthuav, thiab sai sai txias, thiaj li yuav tau txais C60, muaj pes tsawg leeg thiab qauv ntawm C60 tau raug pov thawj los ntawm huab hwm coj spectrometry, X-ray tsom xam thiab lwm yam kev sim. Tsis tas li ntawd, ntau cov molecules zoo ib yam li C60, xws li C70, kuj tau pom. Xyoo 1991, cov kws tshawb fawb pom tias C60 muaj superconductivity tom qab sib tov me me ntawm qee cov hlau (xws li: potassium, rubidium, cesium, thiab lwm yam), thiab cov txheej txheem tsim cov khoom siv no yooj yim dua li kev tsim cov khoom siv superconducting - ceramics, Qhov kev ntxhib los mos yog qhov nyuaj heev, yog li nws tau kwv yees tias kev siv C60 hauv superconductivity tuaj yeem tshaj cov ntaub ntawv ceramic.
Tam sim no, tib neeg txoj kev nkag siab ntawm cov qauv thiab cov tshuaj tiv thaiv ntawm C60 molecules yog tob zuj zus, thiab nws daim ntawv thov hauv cov ntaub ntawv tshawb fawb, superconductors thiab lwm yam kev tshawb fawb tau ua tiav. Cov pa roj carbon microtubules muab tau los ntawm fullerenes yog ib lab lub sij hawm muaj zog dua hlau ntawm tib txoj kab uas hla. Kev ncaws pob hauv ntiaj teb tiag tiag tau nyiam cov neeg suav tsis txheeb nrog nws qhov kev ntxim nyiam tsis kawg, thiab "fullerenes" me me kuj cuam tshuam thiab hloov lub ntiaj teb rau lwm hom.
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COA
| Yam khoom | Specification | Kev tshwm sim | ||
| Qhov tsos (xim) | Tsaus xim av los yog dub hmoov | Cov hmoov dub | ||
| Qhov tshwm sim (Form) | Crystals | Ua raws | ||
| Elemental analysis Appraisal: Positive | Conform rau Composition | |||
| Kev txheeb xyuas | ||||
| Mass spectrum Appraisal: Zoo | ||||
| Infrared spectrum ntsuam xyuas: Zoo | Raws li tus qauv | |||
| Purity (HPLC) | 99.90% | 99.91% | ||
| PAH/C50 | ---- | PAH/C50 | ---- | |
| Cov impurities | ||||
| C60 Oxide | ---- | C60 Oxide | ---- | |
| C70 thiab C70 Oxide | Tsawg dua lossis sib npaug rau 0.06% | C70 thiab C70 Oxide | 0.06% | |
| Siab Fullerene | Tsawg dua lossis sib npaug rau 0.04% | Siab Fullerenes | 0.03% | |
| Residual kuab tshuaj | Tsawg dua lossis sib npaug li 100ppm | Tsis muaj ntaub ntawv | ||
| Xaus | Kev tshuaj xyuas, cov khoom no ua raws li Enterprise Standard | |||
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C60 thiab C70 fullerene yog dab tsi?
Lub C70 molecule muaj ib tug D5h symmetry thiab muaj 37 lub ntsej muag (25 hexagons thiab 12 pentagons) nrog ib tug carbon atom ntawm lub vertices ntawm txhua polygon thiab ib daim ntawv cog lus nyob rau hauv txhua lub polygon ntug. Nws cov qauv zoo ib yam li C60 molecule (20 hexagons thiab 12 pentagons), tab sis muaj ib txoj siv ntawm 5 hexagons tso rau ntawm txoj kab nruab nrab.
Dab tsi yog qhov txawv ntawm fullerene thiab buckyball?
fullerene, ib qho ntawm cov hollow carbon molecules uas tsim ib lub tawb kaw ("buckyballs") lossis lub tog raj kheej (carbon "nanotubes"). Thawj fullerene tau pom nyob rau hauv 1985 los ntawm Sir Harold W.
Puas yog C60 fullerene muaj kev nyab xeeb?
Feem ntau cov pov thawj tam sim no qhia tias C60 tsis muaj tshuaj lom rau tib neeg, txawm tias xav tau kev tshawb fawb ntxiv. Raws li kev tshuaj xyuas xyoo 2016, kev tshawb fawb ntawm tib neeg thiab tsiaj txhu tau pom tias muaj kev cuam tshuam rau kev siv C60 ntawm daim tawv nqaij tsis tshua muaj. Ib txoj kev tshawb fawb xyoo 2012 tau pom tias ntau cov koob tshuaj C60 yaj hauv pob kws roj tsis muaj tshuaj lom rau nas.
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vim li cas xaiv peb
Peb lub Hoobkas
Pob
Shipping Txoj Kev
|
Tsheb thauj mus los |
Shipping txoj kev |
Cargo hnyav xav tau |
Qhov zoo |
|
3-7 hnub |
DHL, Lub teb chaws Yelemees DHL, Lub teb chaws Yelemees DPD, |
Haum rau qis dua 50kg. |
Peb muaj warehouses nyob rau hauv lub teb chaws Yelemees thiab California, teb chaws USA, thiab cov neeg muas zaub nyob rau hauv cov teb chaws Europe thiab America yuav txaus siab rau xa cov khoom ncaj qha los ntawm ob qhov chaw. |
|
7-15 hnub |
Los ntawm Cua |
Haum rau ntau tshaj 50kg. |
|
|
15-60 hnub |
Los ntawm Hiav Txwv |
Haum rau ntau tshaj 500kg. |
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