CO OZNACZA SŁOWO CERIUM
Cer
Cerium jest pierwiastkiem chemicznym o symbolu Ce i atomowej numerze 58. Jest to miękki, srebrzysty, plastyczny metal, który łatwo utlenia się w powietrzu. Cerium zostało nazwane na cześć krasnoludzkiej planety Ceres. Cerium jest najliczniejszymi pierwiastkami ziem rzadkich, stanowiących około 0,0046% wagi Ziemi. Znajduje się w wielu minerałach, najważniejszym jest monazyt i bastnäsite. Zastosowania komercyjne ceru są liczne. Są to katalizatory, dodatki do paliwa w celu zmniejszenia emisji i szkła oraz emalii, aby zmienić kolor. Tlenek ceru jest ważnym składnikiem proszków do polerowania szkła i luminoforów stosowanych w ekranach i lampach fluorescencyjnych. Jest również używany w "krzemień" zapalniczek.
Definicja słowa cerium w słowniku
Definicja ceru w słowniku to plastyczny, stalowo-szary element z szeregu metali lantanowców, stosowany w lżejszych krzemieniach oraz jako czynnik redukujący w metalurgii. Symbol: Ce; nr atomowy: 58; ciężar atomowy: 140,115; wartościowość: 3 lub 4; gęstość względna: 6,770; temperatura topnienia: 798 ° C; temperatura wrzenia: 3443 ° C.
KSIĄŻKI POWIĄZANE ZE SŁOWEM «CERIUM»
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cerium w następujących pozycjach bibliograficznych Książki powiązane ze słowem
cerium oraz krótkie ich fragmenty w celu przedstawienia kontekstu użycia w literaturze.
1
Handbook on the Physics and Chemistry of Rare Earths
45 – mixed oxides 29, ch. 183, p. 75 – zeolites 29, ch. 185, p. 269 cerimetry 36,
ch. 229, p. 281 cerium 1, ch. 4, p. 337 cerium compounds – low-temperature
behavior 15, ch. 98, p. 1 – tetravalent 36, ch. 229, p. 281 cerium(IV) – catalysts 36
, ch.
Cerium(IV) (ceric) salts are orange red or yellowish, whereas cerium(III) (cerous)
salts are usually white or colorless. Both oxidation states absorb ultraviolet light
strongly. Cerium(III) can be used to make glasses that are colorless, yet absorb ...
3
Wide-Gap Luminescent Materials: Theory and Applications: ...
When cerium is present, two peaks are observed: the defect at its characteristic
wavelength and the cerium emission at 550 nm. The ratio between the defect and
cerium emissions is greatly dependent on the temperature. As the temperature ...
4
Dictionary of Inorganic Compounds
C3Hl8CeF,0,8S3 Cerium! Ill) trifluoromethanesulfonate; Nonahydrale, in IC-
003529 C,CeNa6015 Pentakis(carbonato)cerate(/O«>- ); Hcxa-Na sail, in IC-
004615 C5CeOI5*e Pentakis(carbonalo)cerate(/K)(6-), IC-004615 C6Ce20I2
Cerium(///) ...
5
A System of Chemistry for the Use of Students of Medicine
SECTION XIX. SALTS OF OXIDIZED CERIUM. Salts of Oxidized Cerium are
combinations of the ox- s»itsof collides of cerium with the different acids. Five
only of these *zed «- compounds will be noticed. whS'com- Hydrochloric acid
combines ...
6
Kirk-Othmer Encyclopedia of Chemical Technology
See also Cerium oxide Ceric ammonium nitrate, 5:674; 21:259, 260 Ceric
ammonium sulfate, 5:674 Ceric fluoride, 5:674 Ceric hydroxide, 5:676 Ceric
oxide, 5:670, 675 Ceric rare earths (RE), 14:631 Ceric sulfate, 5:674 Ceric sulfate
method, ...
7
Role of Nanocrystalline
Cerium Oxide Coatings on Austenitic ...
2.1.3. Nanocrystalline Cerium Oxide Synthesis In spite of the difficulties to
prepare nanoparticles due to their high surface energy and chemical activity by
which nanoparticles are liable to aggregate, several techniques have been
employed to ...
8
Anodically Generated Acid and
Cerium(IV)--Strategies for ...
Chapter 5 : Recycling Ceric Ammonium Nitrate 5.1 - Recycling cerium (IV) from
cerium (III) Literature precedent for oxidizing cerium (III) to cerium (IV) at an
electrode does exist and gave us hope that we could also achieve this
transformation ...
David Stephen Kesselring,
2008
9
Nature's Building Blocks: An A-Z Guide to the Elements
This was cured by adding 1 % cerium nitrate to the thorium solution; the cerium
oxide formed in this way not only produced a more pleasing light but also acted
as a catalyst, ensuring more complete combustion of the gas. Cerium oxalate ...
10
Penny Cyclopaedia of the Society for the Diffusion of Useful ...
..he usual "processes, the oxide being with great difficulty reduced by charcoal ; it
is best procured by decomposing the chloride by potassium. The properties of
cerium are that it is pulverulent, its colour varying from deep chocolate brown to ...
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «CERIUM»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
cerium w wiadomościach.
Molycorp Inc's Bankruptcy Is the Beginning of the End for Rare …
... to their pre-2009 prices, Molycorp was instead flush with some of the cheapest minerals, cerium and lanthanum, that even today are priced at ... «Motley Fool, Lip 15»
Today's Green Technology
Cerium (Ce) is used in automobile catalytic converters that reduce the toxicity of emissions. Holmium (Ho) is used in magnets and as a yellow ... «The Mountain -Ear, Lip 15»
Molycorp path to bankruptcy ran through global politics, market shifts
"Cerium is used in polishing glass and silicon wafers," King said. "It used to be used just once, but companies are now collecting it and reusing ... «The Denver Post, Lip 15»
Rare Earth Elements Market - Global Industry Analysis, Trends And …
The group consists of yttrium, scandium, and fifteen lanthanide elements (lanthanum, cerium, thulium, ytterbium, praseodymium, gadolinium, ... «CSO Australia, Lip 15»
PET detectors break the 100 ps barrier
In both devices, the SiPMs were coupled to lutetium oxyorthosilicate codoped with cerium and 0.4% calcium crystals, whose faster scintillation ... «Medical Physics Web, Lip 15»
Using Nanoparticle Tracking Analysis (NTA) to Assess Nanoparticle …
... and bioavailability of engineered nanoparticles such as titanium dioxide, cerium dioxide and silver nanoparticles in freshwater periphyton. «AZoNano.com, Lip 15»
RARE EARTHS: COMMODITIES BUST
Lanthanum, used in hybrid-car batteries, and neodymium, for powerful magnets, both jumped fivefold during 2011. Cerium, for glass polishing, ... «The Seattle Times, Lip 15»
How a bet on rare earths flopped when scarcity proved a mirage
Lanthanum, used in hybrid-car batteries, and neodymium, for powerful magnets, both jumped fivefold during 2011. Cerium, for glass polishing, ... «The Globe and Mail, Cze 15»
A Simple Method for the Separation of Dysprosium and Neodymium …
ES: There is some great work going in the U.S. DOE Critical Materials Institute on replacing dysprosium with cerium, a much more abundant ... «Azom.com, Cze 15»
Metals complex the killing fields, but bravehearts press on
Today, you would not be able to sell any investment in a proposed mine where cerium and lanthanum dominated the rare-earth mix. Earlier this ... «The Australian, Cze 15»