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When was the compound originally discovered, and if the answer is in doubt what facts are known and what facts are suspected about these dates? I think this is a compound worthy of historical notes. Zaphraud 04:01, 3 June 2007 (UTC)
Good questions. This page needs some rewriting.
I have removed By subjecting UF6 to repeated boiling and condensing, separation of U-235 from U-238 occurs by statistical enrichment. This just isn't correct. The process of gaseous diffusion rather consists of forcing the UF6 through a semi-permeable membrane. The writer of this probably got the idea of boiling from studying one of the processes by which heavy water is produced.
The phrase statistical enrichment means that the output of a gaseous diffusion cell is enriched and depleted streams, not separated streams. There's a little more of the lighter isotope in the enriched stream, that's all. Nearly all isotope separation technologies work like this, the possible exception (the only one I think, I may be wrong) being the mass spectrometer. So to achieve high enrichments, large cascades are necessary. Andrewa 01:31, 2 Oct 2004 (UTC)
The process you described is separate from gaseous diffusion. The process listed was a process called thermal diffusion. It is not a very good process. The United States decided not to pursue it very early on. The Japanese were using thermal diffusion on their Thorium program during WWII but had problems with it. I believe the Germans also had a thermal diffusion early on but also stopped it. As far as my research can show, only the Japanese were seriously trying to use thermal diffusion Throckmorton Guildersleeve ( talk) 15:52, 25 February 2010 (UTC)
As to how much energy is consumed, I suspect that's still secret, I may be wrong here too. But the claim you sometimes see that the amount of energy required is anywhere near the amount of energy that the enriched uranium will produce is pure rubbish. France, for example, powers its enrichment plant from a cluster of four PWRs, of which only one is dedicated to the enrichment plant. This plant produces more than enough enriched uranium to supply the entire French nuclear power program. This was so even in the days they used gaseous diffusion technology. Gas centrifuge requires far less energy, although it is still a significant amount of energy. Andrewa 02:21, 2 Oct 2004 (UTC)
How is it possible to have a boiling point 8° below melting point? is this an error? —Preceding unsigned comment added by 85.220.3.115 ( talk • contribs)
That phase diagram should be replaced with a phase diagram with SI units.
Literally came to say the same thing. At least atm of pressure and 'C which are comparative to other compounds. /info/en/?search=File:Uranium_hexafluoride_phase_diagram.svg https://commons.wikimedia.org/wiki/File:Uranium_hexafluoride_phase_diagram_ru.svg 108.180.66.167 ( talk) 23:53, 28 January 2023 (UTC)
Should the other fluorides get their own articles? I'm not familiar with chemical species notability standards, so I have no opinion. Ojcit 16:49, 3 October 2006 (UTC)
When the change is made from yellow cake to UF6. Is the end product highly reactive with water?? —The preceding unsigned comment was added by 207.195.38.77 ( talk) 16:40, 28 December 2006 (UTC).
Why does its triple point makes it useful in the extraction methods? Does it keep energy costs low in heating to only 64 Celsius in some way? The article did not make it clear to me.
Secondly I removed the external link as it had no more than that it was used in separation of uranium.
Thirdly, I felt the article needed a short physical properties section, as I was looking for things like the density at different phases and temperature, and its dielectric properties. Maybe this is too detailed for this article, but in any case I could not add a new stub section without disrupting the images. Also the chemistry section seems short - how is it produced, what are typical yields of UF6 and other fluorides, non-nuclear uses? - Wikianon ( talk) 21:51, 27 November 2007 (UTC)
The chembox says that it has a pseudo-octahedral coordination geometry but an octahedral molecular shape. So what is it? Is it a distorted octahedron? By how much? -- Itub ( talk) 12:13, 28 November 2007 (UTC)
How do physical properties (triple point, boiling temperature, specific heat) depend on the isotopic content of UF6? dima ( talk) 14:30, 24 March 2008 (UTC)
Quote:
"Milled uranium ore — U3O8, or "yellowcake" — is dissolved in nitric acid, yielding a solution of uranyl nitrate UO2(NO3)2. Pure uranyl nitrate is obtained by solvent extraction, then treated with ammonia to produce ammonium diuranate ("ADU", (NH4)2U2O7).
Reduction with hydrogen gives UO2"
Question:
Shouldn't that be UO3?
U2O7 goes to U2O6 and one oxygen for the H2O (//=UO3)
If so, how do I get to UO2?
Thx in advance!
Dennis Meulen ( talk) 06:55, 22 January 2009 (UTC)
There is a sentence fragment "enriched uranium" at the end of a paragraph. Was that supposed to go with an image or another paragraph?
Just from the name, it sure sounds toxic but is more information available? Is it toxic because it is highly reactive due to the fluorine or due to radioactivity of the uranium or a combination of these things?-- 64.134.236.69 ( talk) 03:31, 17 August 2014 (UTC)-- Jrm2007 ( talk) 03:32, 17 August 2014 (UTC)
The comment(s) below were originally left at Talk:Uranium hexafluoride/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.
Needs more chemistry info. Wim van Dorst ( Talk) 23:18, 10 February 2007 (UTC). Yellowcake is not the uranium octaoxide U3O8 ! The yellow cake is the ammonium diuranate. —Preceding unsigned comment added by 92.81.80.71 ( talk) 17:30, 4 May 2009 (UTC) |
Last edited at 17:32, 4 May 2009 (UTC). Substituted at 09:43, 30 April 2016 (UTC)
Can’t open 3D model(JSmol) of Uranium hexafluoride. — Codenstory ( talk) 05:58, 25 September 2019 (UTC)
English Wikipedia uses a decimal point instead of the decimal comma shown in File:Uranium hexafluoride dimensions.svg. -- Beland ( talk) 23:49, 2 March 2021 (UTC)