1. Crystal Qauv
Chav tsev
Kev Koom Tes Polyhedron: Ib tug qauv txheej txheem tsim los ntawmNtxiv tetrahedrathiabNtxiv tetrahedratxuas nrog los ntawm cov ntsej muag lossis cov ces kaum.
Interlayer rog: Cov khaubncaws sab nraud povtseg ua ke los ntawm tsis muaj zogVan der Waals rogThiab tau yooj yim stratify (zoo ib yam li graphite).
Chaw Pab Pawg
Crystal System: Orthorhombic system (Chaw Pab PawgNeeg ua tiav).
Lwm Yam Xaiv:
a = 11,51 Å, b = 4,37 Å, c = 3,56 Å.
Txhua lub tsev ntawm tes muaj2 Vanadium atomsthiab5 cov pa atoms.
Cov Qauv Txheej Txheem
Vanadium-Oxygener Kev Khwv:
Cov nyiaj txhiv luv (~ 1.58 Å): v =}} o ob ob daim ntawv cog lus (tetraedral apex oxygen).
Cov nyiaj lis haujlwm ntev (~ 1. {{78-2. 02 Å): Vo): VO Choj (Intralayer Choj Oxygen).
Fawm kib anisotropy: Yooj yim yaig nrogB-axis, uas ua rau v₂o₅ feem ntau noj ntawm cov tsiaj txhu los yog rab koob-zoo li daim duab.
2. Tshuaj Tshuaj Muaj Zog
Cov Khoom Redox Liab
Muaj zog oxidizer:
Thaum kub siab, HCL, HBR, thiab lwm yam tuaj yeem yog oxidized, piv txwv li:
V2o {{{5+6 hcl δ2vocl 2+ {4} h2o
Reacts nrog txo cov neeg sawv cev (piv txwv li, h2, c) los ua cov oxides tsawg (VO2, V2O3, lossis VANADIUM HLAU).
Kho tus kheej:
decomposes thaum rhuab mus690 DEGREE thiab siab dua:
2v2o5 Δ4vo 2+ o2 ↑
Acid-puag kev tawm tsam (amphoteric)
Reacts nrog acidslos uaVanadate ions (vo₂⁺),Piv txwv li thaum yaj hauv sulfuric acid:
V2o {{5+2 h2o4 → 2vo {6} h2o
Reacts nrog alkalislos uatsev vanadates(piv txwv li, sodium metavanadate navo₃):
V2o {{5+2 na a naoh → 2navo 3+ h2o
Kev tawm tsam ntxiv hauv Alkalis Productstsis muaj kob [VO₄] ³-(ortovandate).
Catalytic kev ua ub no
Kev Lag Luam Hnab Ncaws Sulfuric: catchalyzes lub oxidation ntawm so₂ rau so₃ (mechanism suav nrog lub voj voog v⁵⁺↔v⁴⁺):
2so {2+}} 2v2o52o.
Xaiv Oxidation: Xws li, oxidation ntawm benzeneed txiv neej anhydride thiab propane rau acrylic acid.
Cov tshuaj tiv thaiv nrog cov tshuaj organic
Oxidation ntawm dej cawv thiab aldehydes: Xws li, ethanol yog oxidized rau acetaldehyde thiab ntxiv rau acetic acid.
Polymerization kev tawm tsam: Ua txhaum ua catalyst rau synthesis ntawm tej yam polymers (piv txwv li, polyethylene).
3. Cov Khoom Hluav Taws Xob thiab Sawb Cov Qauv
Cov Khoom Siv SicemerCawv: bandgap ntawm txog2.3 EV(Kev nqus nyob hauv cov teeb pom kev zoo).
Them Nyiaj Hloov: CovD⁰ Electron kev teeb tsa ntawm V⁵⁵⁺ tso cai rau nws kom yooj yim lees txais hluav taws xob thiab koom nrog Redox Cycles.
4. Tshwj xeeb tshwm sim thiab kev tawm tsam
Sib Tham Kev Sib Tham: Li thiab na ions tuaj yeem sib cais ntawm cov khaubncaws sab nraud povtseg, uas yog siv hauv cov roj teeb lithium.
V2o {{5+ xli ++ xe- → lxV2O5
Kev yees duab: Muaj peev xwm caturalze kho qhov teeb meem ntawm cov organic (piv txwv li zas xim decomposition) nyob rau hauv cov cawv ntawm ultraviolet teeb.
