The present invention features a method of making hydrous zirconium oxide having desirable properties, including resistance to moisture content, predetermined particle size, and developed porosity and surface area. The inventive material is suitable for use as an ion exchanger, a catalyst and a catalyst support. The process comprises providing a liquid comprising a zirconium compound and an ...
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بیشتر3. Hafnium-free zirconium carbide and niobium carbide can be used as refractory coatings in nuclear reactors. 4. Zirconium carbide is used extensively as a coating of uranium dioxide and thorium dioxide particles of nuclear fuel. 5. The coating is usually deposited by thermal chemical vapor deposition in a fluidized bed reactor. 6.
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بیشترlabelled using gold-198, iron-59, or hafnium-181 as a tracer, for example, and the deposition of these sedi-ments at the bottom of water bodies can be investigated. The technique is of interest in studies concerned with deposition in harbour zones, estuaries, reservoirs and infiltration ponds for artificial recharge of water.
بیشتر§ 302.1 Applicability. This regulation designates under section 102(a) of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 ("the Act") those substances in the statutes referred to in section 101(14) of the Act, identifies reportable quantities for these substances, and sets forth the notification requirements for releases of these substances.
بیشترUS20070178038A1 US11/698,222 US69822207A US2007178038A1 US 20070178038 A1 US20070178038 A1 US 20070178038A1 US 69822207 A US69822207 A US 69822207A US 2007178038 A1 US2007178038 A1 US 2007178038A1 Authority US United States Prior art keywords hafnium polymer ceramic fiber polymers Prior art date Legal status (The legal status is …
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بیشترWide range synaptic weight modulation with a tunable drain current was demonstrated in thin-film transistors (TFTs) with a hafnium oxide (HfO 2−x) gate insulator and an indium–zinc oxide (IZO) channel layer for application to artificial synapses in neuromorphic systems.The drain current in these TFTs was reduced significantly by four orders of magnitude on application of a negative gate ...
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بیشترFluidized-bed carbochlorination of milled zircon sand is the zircon decomposition process used by American and French zirconium metal producers. Chlorine is the fluidizing gas. The reaction is endothermic and supplemental energy is supplied, usually by induction heating of the interior graphite wall of the chlorinator.
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بیشترCatalog Number. Description. CAS Number. 72-0700. Bis (cyclopentadienyl)dimethylhafnium, min. 97%. 3. 72-1000. Bis (cyclopentadienyl)hafnium dichloride, min. …
بیشترFOR101. Base includes inorganic silicon or metal containing compound (e.g., glass, ceramic, brick, etc.) (427/255) FOR102. Mixture of vapors or gases utilized (427/255.1) FOR103. The resultant coating is a mixture or a compound formed from the mixture utilized (427/255.2)
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بیشترA liquid liquid extraction study of zirconium and hafnium in association with anion perchiorate and the neutral ligand,1-phenyl-2,3,dimethyl-5-pyrazolone into the best suited solvent has been ...
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بیشترThe titanium, hafnium, niobium, tantalum and rhenium wires were implanted in the subcutaneous tissue of the abdominal region and in femoral bone marrow of rats for either 2 or 4 weeks.
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