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Magical Rare Earth Element: Lutetium
Lutetium yog ib qho tsis tshua muaj hauv ntiaj teb nrog cov nqi siab, tsawg kawg nkaus, thiab siv tsawg. Nws yog mos thiab soluble nyob rau hauv dilute acids, thiab maj mam react nrog dej. Cov isotopes tshwm sim muaj xws li 175Lu thiab ib nrab-lub neej ntawm 2.1 × 10 ^ 10 xyoo β Emitter 176Lu. Nws yog tsim los ntawm kev txo Lu...Nyeem ntxiv -
Magical Rare Earth Element - Praseodymium
Praseodymium yog qhov thib peb tshaj plaws lanthanide keeb nyob rau hauv lub sij hawm lub sij hawm ntawm cov tshuaj cov ntsiab lus, nrog ib tug ntau ntawm 9.5 ppm nyob rau hauv lub crust, tsuas yog qis dua cerium, yttrium, lanthanum, thiab scandium. Nws yog qhov thib tsib tshaj plaws nyob rau hauv lub ntiaj teb tsis tshua muaj. Tab sis ib yam li nws lub npe, praseodymium yog ...Nyeem ntxiv -
Barium hauv Bolognite
arium, lub caij 56 ntawm lub sijhawm teem sijhawm. Barium hydroxide, barium chloride, barium sulfate… yog cov tshuaj reagents ntau heev nyob rau hauv tsev kawm ntawv cov phau ntawv. Nyob rau hauv 1602, alchemists sab hnub poob pom lub pob zeb Bologna (tseem hu ua "sunstone") uas tuaj yeem tso lub teeb. Hom ore no muaj me me lum...Nyeem ntxiv -
Cerium Oxide yog dab tsi?
Cerium oxide yog ib yam khoom tsis muaj zog nrog cov tshuaj formula CeO2, lub teeb daj lossis daj xim av auxiliary hmoov. Qhov ceev 7.13g / cm3, melting point 2397 ° C, insoluble nyob rau hauv dej thiab alkali, me ntsis soluble nyob rau hauv acid. Ntawm qhov kub ntawm 2000 ° C thiab lub siab ntawm 15MPa, hydrogen tuaj yeem siv los rov ...Nyeem ntxiv -
Kev siv nano cerium oxide hauv polymer
Nano-ceria txhim kho ultraviolet aging kuj ntawm polymer. 4f cov qauv hluav taws xob ntawm nano-CeO2 yog qhov nkag siab zoo rau lub teeb nqus, thiab qhov nqus nqus feem ntau yog nyob rau hauv cheeb tsam ultraviolet (200-400nm), uas tsis muaj cov yam ntxwv haum rau pom lub teeb thiab xa mus zoo. Ord...Nyeem ntxiv -
Daim ntawv thov ntawm scandium oxide Sc2O3 hmoov
Daim ntawv thov ntawm scandium oxide Cov tshuaj formula ntawm scandium oxide yog Sc2O3. Khoom: Dawb khoom. Nrog cubic qauv ntawm tsawg ntiaj teb sesquioxide. Qhov siab 3.864. Melting point 2403 ℃ 20 ℃. Insoluble nyob rau hauv dej, soluble nyob rau hauv kub acid. Nws yog npaj los ntawm thermal decomposition ntawm scandium ntsev. Nws tuaj yeem yog ...Nyeem ntxiv