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Alloy of zirconium and hydrogen
Zirconium hydride describes alloys with the formula ZrHx. They are dark gray to black metallic powders. These alloys behave as usual metals in terms of
Zirconium_hydride
Chemical compound
Uranium zirconium hydride (UZrH, U-ZrHx), a dispersion of metallic uranium in a δ-ZrH1.6 matrix, is used as the fuel in TRIGA reactors. UZrH fuel is used
Uranium_zirconium_hydride
Chemical element with atomic number 40 (Zr)
time; due to the brittleness of zirconium hydrides relative to zirconium alloys, the mitigation of zirconium hydride formation was highly studied during
Zirconium
Zircaloy family
hydrogen gas, which partly diffuses into the alloy and forms zirconium hydrides. The hydrides are less dense and are weaker mechanically than the alloy;
Zirconium_alloys
Device containing a pyrotechnic composition
potassium nitrate. Common fuels used are titanium, titanium(II) hydride, zirconium, zirconium hydride, and boron. The size of the fuel particles is determined
Pyrotechnic_initiator
Brand of binary explosive targets
325-mesh titanium sponge and 5% 200-mesh zirconium hydride (with another patent document listing 5% zirconium hydroxide). The oxidizer is reported as a
Tannerite
Class of nuclear reactor used for education and research
non-destructive testing and isotope production. The TRIGA reactor uses uranium zirconium hydride (UZrH) fuel, which has a large, prompt negative fuel temperature coefficient
TRIGA
American nuclear technology company
those of research reactors on college campuses. Kaleidos reactors use zirconium hydride embedded within graphite blocks as their neutron moderator, allowing
Radiant_Nuclear
Field of physics dealing with nuclear reactors
neutron moderator such as regular water, heavy water, graphite, or zirconium hydride, and fitted with mechanisms such as control rods which control the
Nuclear_reactor_physics
1960s NASA program which developed and tested nuclear reactors for satellites
established for space satellite applications. The SER used uranium zirconium hydride as the fuel and eutectic sodium-potassium alloy (NaK) as the coolant
Systems for Nuclear Auxiliary Power
Systems_for_Nuclear_Auxiliary_Power
Chemical compound with hydrogen and carbon group atoms
Titanium(IV) hydride TiH4, a structural analog of the group 14 tetrahydrides Zirconium hydride ZrH4 and others Zirconium(II) hydride ZrH2 Uranium(IV) hydride UH4
Group_14_hydride
materials for nickel metal hydride (NiMH), and nickel cadmium and lithium ion batteries (NiCd) batteries. As of 2009, China Zirconium Limited had an annual
China_Zirconium_Limited
Reduction in ductility of a metal exposed to hydrogen
corrosion, impurities, or radiolytic decomposition) forms brittle zirconium hydride (ZrH2) platelets, which induce high tensile stresses at the platelet
Hydrogen_embrittlement
Chemical compound
(1977). "Reactions of Lithium Aluminum Hydride or Alane with Olefins Catalyzed by Titanium Tetrachloride or Zirconium Tetrachloride. A Convenient Route to
Aluminium_hydride
Material fuelling nuclear reactors
elements. The alloys that have been used include uranium-zirconium (U-Zr), uranium zirconium hydride (UZrH), and uranium-molybdenum, as well as intermetallic
Nuclear_fuel
Electrical generator that uses heat from radioactive decay
electricity *** not really an RTG, the SNAP-10A used enriched uranium fuel, zirconium hydride as a moderator, liquid sodium potassium alloy coolant, and was activated
Radioisotope thermoelectric generator
Radioisotope_thermoelectric_generator
Class of chemical compounds
more stable. One transition metal complex was formed from a lithium zirconium hydride complex in solution reacting with diphenylphosphine selenide. With
Hydride_selenide
Public university in Corvallis, Oregon, US
reactor is equipped to utilize high-assay, low-enriched (HALEU) uranium zirconium hydride fuel. U.S. News & World Report's 2008 rankings placed OSU eighth in
Oregon_State_University
tantalum, zirconium, oxygen); used in spectacle frames, precision screws, etc. Titanium carbide (carbon) [Ti-C] Titanium gold (gold) Titanium hydride (hydrogen)
List_of_named_alloys
Type of rechargeable battery
A nickel–metal hydride battery (NiMH or Ni–MH) is a type of rechargeable battery. The chemical reaction at the positive electrode is similar to that of
Nickel–metal_hydride_battery
Defunct American energy company
home for 10 years using 20% enriched uranium in the form of uranium zirconium hydride. The announcement supposedly took place at the previously announced
Enron
Nuclear spacecraft propulsion technology
such as carbon composites or carbides and are normally coated with zirconium hydride. Before criticality occurs, solid core NTR fuel is not particularly
Nuclear_thermal_rocket
Reactor accident due to core overheating
the uranium zirconium hydride fuel used. The Hydrogen Moderated Self-regulating Nuclear Power Module, a reactor that uses uranium hydride as a moderator
Nuclear_meltdown
Chemical compounds containing H+ and N– ions in a single phase
hydridonitride (nitridohydride, nitride hydride, or hydride nitride) is a chemical compound that contains both hydride (H−) and nitride (N3−) ions. These inorganic
Hydridonitride
Experimental nuclear-powered US Air Force satellite
8 in) diameter and holds 37 fuel rods containing 235U as uranium-zirconium-hydride fuel. The SNAP-10A reactor was designed for a thermal power output
SNAP-10A
Chemical compounds containing only hydrogen and one other chemical element
the hydride to possibly be accurately described as truly behaving ionic. Therefore, this category of hydrides contains only a few members. Hydrides in
Binary_compounds_of_hydrogen
Soviet nuclear reactor for use in space
and these form the 37 fuel elements which penetrate the cylindrical zirconium hydride (ZrH) moderator. This in turn is surrounded by a beryllium neutron
TOPAZ_nuclear_reactor
Chemical process leading to the settling of an insoluble solid from a solution
alloys. Precipitation of ceramic phases in metallic alloys such as zirconium hydrides in zircaloy cladding of nuclear fuel pins can also render metallic
Precipitation_(chemistry)
1435 4.3 Zinc ashes UN 1436 4.3 Zinc powder or Zinc dust UN 1437 4.1 Zirconium hydride UN 1438 5.1 Aluminium nitrate UN 1439 5.1 Ammonium dichromate UN 1440
List of UN numbers 1401 to 1500
List_of_UN_numbers_1401_to_1500
Soviet nuclear thermal rocket engine
insulation between uranium carbide/tungsten carbide fuel and the zirconium hydride moderator. This allowed for a very compact reactor core design. Hydrogen
RD-0410
also the first use of nuclear electric propulsion. It uses a uranium zirconium hydride fuel-moderator hybrid, and a liquid sodium–potassium alloy (NaK) coolant
Timeline_of_nuclear_power
tetrahydroborate derivatives of the Group IVa elements. Preparation of new zirconium hydride species". Inorganic Chemistry. 6 (11): 1979–1983. doi:10.1021/ic50057a009
Organozirconium and organohafnium chemistry
Organozirconium_and_organohafnium_chemistry
based on high-density concrete. The reactor use enriched uranium and zirconium-hydride (U-ZrH1.6) as its solid fuel elements, while distillation water serves
Malaysian_Nuclear_Agency
Topics referred to by the same term
or ZrH may refer to: Zurich Airport, in Switzerland, IATA code ZRH Zirconium hydride, chemical symbol ZrH This disambiguation page lists articles associated
ZRH
U.S. project to build a nuclear thermal rocket
concerns that a reactor so small might not achieve criticality, so zirconium hydride (a good moderator) was added, and the thickness of the beryllium reflector
Project_Rover
Nuclear reactor cooled or moderated by an organic liquid
Other possible moderators include beryllium, beryllium oxide, and zirconium hydride. Similar to a boiling water reactor (BWR), a boiling organic-cooled
Organic_nuclear_reactor
leverages the technology used in the TRIGA reactor, which uses uranium zirconium hydride (UZrH) fuel and is the only reactor licensed by the U.S. Nuclear Regulatory
Hydrogen-moderated self-regulating nuclear power module
Hydrogen-moderated_self-regulating_nuclear_power_module
Chemical compound
from hydrozirconation. Upon alkene insertion into the zirconium hydride bond, the resulting zirconium alkyl undergoes facile rearrangement to the terminal
Schwartz's_reagent
It is costly and scarce, its uses are therefore limited. Zirconium and zirconium hydride are used for getting. Tungsten is often used in high temperature
Materials_for_use_in_vacuum
French nuclear fuel producing company
employs around 150 people. It is the only manufacturer of uranium zirconium hydride fuel in the world, a material used in TRIGA reactors. FBFC (Report)
Franco-Belge de Fabrication du Combustible
Franco-Belge_de_Fabrication_du_Combustible
n/(cm²·s) Fuel type uranium zirconium hydride Cooling 100% natural convection Neutron moderator light water zirconium hydride Control rods 6 rods, B4C Cladding
Texas A&M Nuclear Science Center
Texas_A&M_Nuclear_Science_Center
8e12 n/cm^2-s Cooling Light water Neutron moderator Light water, zirconium hydride Neutron reflector Graphite, light water Control rods Boron carbide
Istanbul Technical University TRIGA Mark-II Training and Research Reactor
Istanbul_Technical_University_TRIGA_Mark-II_Training_and_Research_Reactor
graveyard orbit in 1300 km height Fission reactor SNAP-10A 235 U (uranium-zirconium hydride) 500 We USA Nimbus B (Nimbus-B1) 1968-05-18 Destroyed - Crashed at
List of nuclear power systems in space
List_of_nuclear_power_systems_in_space
Class of chemical compounds
Carbohydrides (or carbide hydrides) are solid compounds in one phase composed of a metal with carbon and hydrogen in the form of carbide and hydride ions.[citation
Carbohydride
Crystallographic system where the unit cell is in the shape of a cube
for NaF, 2.8 Å for NaCl, and 3.2 Å for SnTe. Most of the alkali metal hydrides and halides have the rock-salt structure, though a few have the caesium
Cubic_crystal_system
French chemist (born 1943)
of Polyethylene and Polypropylene to Diesels or Lower Alkanes by a Zirconium Hydride Supported on Silica‐Alumina: A Step Toward Polyolefin Degradation
Jean-Marie_Basset
Schwartz's reagent – C10H11ClZr Zirconium propionate – Zr(CH3CH2COO)4 Zirconium tungstate – Zr(WO4)2 Zirconium(II) hydride – ZrH2 Lead zirconate titanate
List_of_inorganic_compounds
Building on the Oregon State University campus in Corvallis, Oregon, U.S.
is high-assay, low-enriched uranium (HALEU) in the form of uranium zirconium hydride (UZrH) with an erbium burnable poison. Operation began in 1967. The
Oregon State University Radiation Center
Oregon_State_University_Radiation_Center
American energy company
several metric tonnes. Moderated by zirconium hydride (ZrH), possibly also using lithium hydride (LiH) and yttrium hydride (YH). ZrH is corroded by molten
Transatomic_Power
shutdown 500 1987-01-01 National Nuclear Center, Semipalatinsk Test Site zirconium hydride moderated reactor (dismantled) IVG.1M Kurchatov Pwr Operational 35
List of nuclear research reactors
List_of_nuclear_research_reactors
Nuclear research reactor in Washington State University
clad in stainless steel utilizing Uranium-235 dispersed in a ceramic zirconium-hydride matrix as fuel. The WSUR operated with this TRIGA fuel until the Fuel
Washington State University Reactor
Washington_State_University_Reactor
American professor of chemistry
reactivity and syntheses of mono and bis permethylcyclopentadienyl zirconium hydrides (Ph.D.). California Institute of Technology. OCLC 437056692. ProQuest 303102977
Peter_T._Wolczanski
Tendency of a chemical compound to ignite in open air
Metal hydrides (sodium hydride, lithium aluminium hydride, uranium trihydride) Partially or fully alkylated derivatives of metal and nonmetal hydrides (diethylaluminium
Pyrophoricity
Chemical compound
Zirconocene dichloride is an organozirconium compound composed of a zirconium central atom, with two cyclopentadienyl and two chloro ligands. It is a
Zirconocene_dichloride
How nuclear fuel behaves during a reactor accident
Hydriding occurs when hydrogen produced by this reaction precipitates as hydride phases within the zirconium, embrittling the cladding. These hydride
Behavior of nuclear fuel during a reactor accident
Behavior_of_nuclear_fuel_during_a_reactor_accident
American physicist (1913–2009)
small reactor for universities and laboratories. TRIGA used uranium zirconium hydride (UZrH) fuel, which has a large, prompt negative fuel temperature coefficient
Edward_Creutz
Finnish nuclear reactor
core. The reactor had 79 fuel rods. The fuel material was uranium zirconium hydride (UZrH), which was 8–12% of uranium. The fuel enrichment was 20% uranium-235
FiR_1
Form of nuclear reactor failure
reactor operation also degrades the mechanical properties of zirconium alloys through hydride-induced embrittlement, which can further influence cladding
Loss-of-coolant_accident
Any chemical compound having a borohydride anion
etc. Current methods involve reduction of trimethyl borate with sodium hydride. In the borohydride anion and most of its modifications, boron has a tetrahedral
Borohydride
Chemical compound containing transition metals and aldehydes or ketones
Tris[(.eta.2-formaldehyde)zirconocene] from the carbonylation of a zirconium hydride". Journal of the American Chemical Society. 105 (10): 3353–3354. Bibcode:1983JAChS
Transition metal complexes of aldehydes and ketones
Transition_metal_complexes_of_aldehydes_and_ketones
Pyrometallugrical industrial process
United States, Kroll further developed the method for the production of zirconium at the Albany Research Center. Chloride process FFC Cambridge process –
Kroll_process
Source of neutrons from linear particle accelerators
reservoir element also uses metal hydrides, e.g. uranium hydride, as the active material. Titanium is preferred to zirconium as it can withstand higher temperatures
Neutron_generator
Chemical element with atomic number 1 (H)
Northwood, D. O.; Kosasih, U. (January 1983). "Hydrides and delayed hydrogen cracking in zirconium and its alloys". International Metals Reviews. 28
Hydrogen
counterions, including lithium, iron, silver, lead, titanium, tin, tellurium, zirconium, niobium, mercury, zinc, antimony, bismuth, nickel, palladium, and copper
Homoenolates
Chemical compound
site on zirconium. The resulting cationic zirconocene species is stabilised by the non coordinating borane anion. The exposed site on the zirconium allows
Tris(pentafluorophenyl)borane
Chinese nuclear physicist and materials scientist (1921–2019)
deformation of beryllium crystals. He also studied uranium dioxide and zirconium hydrides. After the Cultural Revolution, he began studying modification of
Li_Hengde
Chemical element with atomic number 43 (Tc)
exacerbated by the mutually enhanced solvent extraction of technetium and zirconium at the previous stage, and required a process modification. The most prevalent
Technetium
Fifth row of the periodic table
has the largest known magnetic penetration depth of all the elements. Zirconium is one of the main components of zircon crystals, currently the oldest
Period_5_element
Chemical reaction
β-carbon elimination is usually less favored than hydride elimination because the metal–hydride bond is stronger than the metal–carbon bond for most
Β-Carbon_elimination
Area of study in chemistry
+ 3 CH2=CHR → 3 [Al2(CH2CHR)3 Diisobutylaluminium hydride, which is dimeric, is prepared by hydride elimination from triisobutylaluminium: 2 i-Bu3Al →
Organoaluminium_chemistry
Rosenthal's reagent is a metallocene bis(trimethylsilyl)acetylene complex with zirconium (Cp2Zr) or titanium (Cp2Ti) used as central atom of the metallocene fragment
Rosenthal's_reagent
Non-explosives producing heat, light and sound
to water): Titanium(II) hydride – together with potassium perchlorate it is used in some igniters Zirconium(II) hydride – together with potassium perchlorate
Pyrotechnic_composition
Chemical element with atomic number 13 (Al)
aluminium hydride is lithium aluminium hydride (LiAlH4), which is used as a reducing agent in organic chemistry. It can be produced from lithium hydride and
Aluminium
through the use of lithium aluminium hydride. The mechanism of this transformation involves the addition of hydride to the carbon less able to stabilize
Alkenylaluminium_compounds
Chemical element with atomic number 57 (La)
mantles. Carl Auer von Welsbach used a mixture of lanthanum oxide and zirconium oxide, which he called Actinophor and patented in 1886. The original mantles
Lanthanum
Chemical compounds with at least one niobium atom
element niobium (Nb). In many ways, niobium is similar to tantalum and zirconium. It reacts with most nonmetals at high temperatures; with fluorine at
Niobium_compounds
Chemical element with atomic number 21 (Sc)
the scandium(II) centers. Scandium hydride is not well understood, although it appears not to be a saline hydride of Sc(II). As is observed for most elements
Scandium
Substance producing a foaming process in a variety of materials
decomposes to form hydrogen gas and titanium at elevated temperatures. Zirconium(II) hydride is used for the same purpose. Once formed the low molecular weight
Blowing_agent
Chemical element with atomic number 50 (Sn)
the +4 oxidation state, is unstable. Organotin hydrides are however well known, e.g. tributyltin hydride (Sn(C4H9)3H). These compounds release transient
Tin
Extremely strong acid
for alkylations. Typical catalysts are sulfated oxides of titanium and zirconium or specially treated alumina or zeolites. The solid acids are used for
Superacid
Chemical compound
(January 1994). "Terminal oxo, sulfido, selenido, and tellurido complexes of zirconium, (.eta.5-C5Me4R)2Zr(E)(NC5H5): comparison of terminal Zr-E single and
Hydrotelluride
Geochemical classification
nonmetals, and the more reactive metals of the d-block such as titanium, zirconium and vanadium. Most lithophile elements form very stable ions with an electron
Goldschmidt_classification
Related chemical elements of the periodic table
form fewer stable hydrides, although both AlH3 and GaH3 exist. Indium, the next element in the group, is not known to form many hydrides, except in complex
Boron_group
Chemical element with atomic number 94 (Pu)
silicon and hydrogen. When exposed to moist air, it forms oxides and hydrides that can expand the sample up to 70% in volume, which in turn flake off
Plutonium
Chemical compounds containing technetium
TcCl6 octahedra. It is isomorphous to transition metal tetrachlorides of zirconium, hafnium, and platinum. Two polymorphs of technetium trichloride exist
Technetium_compounds
American inorganic chemist
tungsten(II), shown below. Additionally, Kiplinger and Richmond reported zirconium complexes that catalyze aromatic fluorocarbon hydrogenolysis. From 1996
Jaqueline_Kiplinger
process. In water-cooled reactors, this can be due to the reaction of the zirconium alloy cladding with the cooling water, which produces hydrogen. The hydrogen
Fuel_fleas
Class of chemical compounds
tetranorbornyls is predominately considered to be derived from the unfavorable β-hydride elimination. Computational calculations have determined that London dispersion
Metal_tetranorbornyl
Chemical element with atomic number 92 (U)
hydrogen to form uranium hydride. Even higher temperatures will reversibly remove the hydrogen. This property makes uranium hydrides convenient starting materials
Uranium
Chemical element with atomic number 7 (N)
binary nitrogen hydrides are known, but the most important are hydrazine (N2H4) and hydrogen azide (HN3). Although it is not a nitrogen hydride, hydroxylamine
Nitrogen
Chemical compound
"Cyclometallapolysulfanes (And Selanes) of Bis(η 5 -Cyclopentadienyl) Titanium(IV), Zirconium(IV), Molybdenum(IV), and Tungsten(IV)". Inorganic Syntheses. Vol. 27.
Titanocene_dichloride
Chemical reaction with carbon-metal bond
methyl from the aluminium to the zirconium occurs. Next, chloride abstraction by aluminium creates a cationic zirconium species that is closely associated
Carbometalation
Chemical element with atomic number 51 (Sb)
H & Kim, S. (2000). "The effects of antimony trisulfide (Sb2S3) and zirconium silicate (ZrSiO4) in the automotive brake friction material on friction"
Antimony
Canadian chemist
Richard R. Schrock. Her work at MIT focused on the synthesis of cationic zirconium and hafnium complexes bearing arylated diamidopyridine ligands, and the
Parisa_Mehrkhodavandi
13762–26–0 ZrCl4 zirconium(IV) chloride 10026–11–6 ZrF4 zirconium(IV) fluoride 7783–64–4 ZrH2 zirconium(II) hydride 7704–99–6 ZrI2 zirconium(II) iodide 15513–85–6
List of CAS numbers by chemical compound
List_of_CAS_numbers_by_chemical_compound
Chemical element with atomic number 63 (Eu)
essentially fully occupied hydrogen sites. Europium hydride chemistry extends beyond the binary hydride. EuLiH3 contains Eu(II) and crystallizes in the cubic
Europium
Chemical element with atomic number 14 (Si)
hard octahedral crystals. Friedrich Wöhler discovered the first volatile hydrides of silicon, synthesising trichlorosilane in 1857 and silane itself in 1858
Silicon
Concept in chemistry
the apical C. Applications of IBO for cluster compounds have included zirconium doped boron clusters. IBO analysis showed, that the unusual stability
Intrinsic_bond_orbitals
Chemical compound
it is related to diborane, but with methyl groups replacing terminal hydrides on each boron. It is the dimer of methylborane, CH3BH2, the simplest alkylborane
1,2-Dimethyldiborane
Chemical element with atomic number 90 (Th)
known, however. Thorium is much more similar to the transition metals zirconium and hafnium than to cerium in its ionization energies and redox potentials
Thorium
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