Vanadium pentoxide yog ib qho oxide ntawm vanadium (V) nrog cov tshuaj formula V2O5. Nws yog cov tshuaj lom txiv kab ntxwv-daj, me ntsis soluble hauv dej, thiab decomposes los ntawm kev poob ntawm oxygen thaum rhuab. Nws yog siv los ua ib qho catalyst hauv kev lag luam chemical thiab tseem ceeb hauv kev lag luam sulfuric acid los catalyze ib kauj ruam hloov ntawm sulfur dioxide rau sulfur trioxide.
Chemical Properties
Txawm li cas los xij, cov oxides feem ntau yog acidic thiab volatilise ntau dua 700 degree . Nws decomposes rau oxygen thiab vanadium pentoxide ntawm 70 ~ 1125 degree, uas ua rau nws yog ib qho catalyst rau ntau cov organic thiab inorganic tshuaj. Raws li ib tug muaj zog oxidizing tus neeg sawv cev, nws yog yooj yim txo mus rau ntau yam uas tsis muaj nqi oxides. Me ntsis soluble nyob rau hauv dej thiab tsim ruaj khov colloidal daws. Dissolved hauv alkali los tsim vanadate. Dissolved nyob rau hauv acid tsis tsim pentavalent vanadium ions, tab sis VO2+ ions, yog ib yam tshuaj lom, qhov tso cai nyob rau hauv huab cua yog tsawg dua 0.5mg / m³.
Kev siv yooj yim
Vanadium muaj ntau yam zoo ntawm lub cev thiab tshuaj lom neeg thiab yog li siv dav, thiab hu ua "vitamin" ntawm hlau. Thaum pib, vanadium feem ntau yog siv rau hauv cov hlau thiab hlau los txhim kho lub zog, tawv thiab hnav tsis kam ntawm cov hlau los ntawm kev ua kom zoo ntawm lub koom haum thiab cov nplej loj thiab ua kom cov nplej coarsening kub. Tom qab ntawd, tib neeg maj mam pom qhov kev txhim kho zoo tshaj plaws ntawm vanadium hauv titanium alloys thiab siv rau hauv aerospace teb, uas ua rau muaj kev vam meej hauv kev lag luam aerospace. Nrog rau kev loj hlob sai ntawm kev tshawb fawb thiab thev naus laus zis, muaj kev xav tau ntau ntxiv rau cov ntaub ntawv tshiab. Vanadium tau siv dav hauv cov teb tsis yog hlau, npog aerospace, chemistry, roj teeb, pigments, iav, optics, tshuaj thiab ntau qhov chaw.
