cerium


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ce·ri·um

 (sîr′ē-əm)
n. Symbol Ce
A lustrous, iron-gray, malleable metallic element of the lanthanide series that occurs chiefly in the minerals monazite and bastnaesite, exists in four allotropic states, is a constituent of pyrophoric alloys, and is used in metallurgy and in the manufacture of glass, incandescent mantles, and hydrocarbon combustion catalysts. Atomic number 58; atomic weight 140.12; melting point 799°C; boiling point 3,443°C; specific gravity 6.77; valence 3, 4. See Periodic Table.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

cerium

(ˈsɪərɪəm)
n
(Elements & Compounds) a malleable ductile steel-grey element of the lanthanide series of metals, used in lighter flints and as a reducing agent in metallurgy. Symbol: Ce; atomic no: 58; atomic wt: 140.115; valency: 3 or 4; relative density: 6.770; melting pt: 798°C; boiling pt: 3443°C
[C19: New Latin, from Ceres (the asteroid) + -ium]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ce•ri•um

(ˈsɪər i əm)

n.
a steel-gray, ductile metallic element of the rare-earth group found only in combination. Symbol: Ce; at. wt.: 140.12; at. no.: 58.
[1795–1805; Cer (es) + -ium2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

ce·ri·um

(sîr′ē-əm)
Symbol Ce A shiny, gray metallic element of the lanthanide series. It is easily shaped and in pure form will ignite if scratched with a knife. It is used in glass polishing and as a catalyst in self-cleaning ovens. Atomic number 58. See Periodic Table.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cerium - a ductile grey metallic element of the lanthanide seriescerium - a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
bastnaesite, bastnasite - a yellow-to-brown mineral that is a source of rare earth elements
gadolinite, ytterbite - a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium
monazite - a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
церий
cercér
cerium
cerio
tseerium
cerium
cerij
cérium
serín
セリウム
cerium
ceris
cerium
cer
ceriu
cér
cerij
cerium
seryum
References in periodicals archive ?
Caption: Figure 4: EDX mapping of cerium, oxygen, and palladium within 1Pd-CeO2-B-N showing a good distribution of the three elements within the material matrix and its corresponding EDX spectrum based on SEM image.
This research presents electrochemical deposition of a ceramic with nanoclay addition, cerium oxide/layered silicate films.
It has been shown that the use of cerium compounds as diesel fuel catalyst results in the production in the Ce[O.sub.2] NPs in the exhaust [8], warranting toxicological assessment of these nanoparticles on the lung and secondary organs.
Keywords: 1,4-bis (triphenylphosphonium)butane cerium nitrate; Alkyl-substituted benzene; Aromatic aldehyde; Aromatic ketone; Oxidation; Triphenylphosphine.
Electronic and lattice dynamical properties of cerium monochalcogenides have been studied theoretically and experimentally by several groups over the years [1-10].
Approaches to cerium conversion coatings include different salts, variation on immersion temperature, anodizing, applying many layers, variation in concentration, surface activation, and use of accelerators like hydrogen peroxide [6-19].
The main objectives of the present research work are (i) synthesis and characterization of Ti[O.sub.2] doped with Cerium photocatalysts, (ii) photocatalytic degradation of Nitrobenzene pollutant in aqueous suspensions using the doped catalyst and undoped catalyst under visible light, (iii) optimization of operational parameters, and (iv) detailed kinetic study using Langmuir Hinshelwood model.
01 The fuel cell's ceramic plates are made with powders based on cerium oxide, perovskite, nickel oxide, and bismuth oxide.
The delivery of these final cerium oxide products marks the conclusion of the six month Solvent Extraction Pilot Plant operation at ANSTO Minerals test facility near Sydney.
M2 PRESSWIRE-August 2, 2019-: Cerium Oxide Nanoparticles Market Extensive Growth Emerging Factors on Demand, Revenue, Precise Outlook with CAGR of 21.7% by 2022