Talk:Lithium peroxide

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Structure and similarities[edit]

There needs to be more about the structure of Lithium peroxide. Also, isn't it similar to hydrogen peroxide?

--Heero Kirashami (talk) 22:54, 2 November 2008 (UTC)[reply]

Incorrect Physical Properties[edit]

The density given in the Chembox is incorrect (currently 1.2063 g/cm^3), and significantly understates the density of lithium peroxide. It's actual density is 2.31 g/cm^3 (as given by the CRC Handbook, 91st edition^[1] and by Lange's Handbook of Chemistry, 16th edition^[2]).

--Jrhardin87 (talk) 19:11, 20 July 2011 (UTC)[reply]

Use in apollo space missions[edit]

Though the citation^[3] I entered did support the claim, the book is the only published source of this data and was released in 2013. I suspect that its source was the uncited claim on this page.

The claim should be removed. A chemistry textbook isn't a reliable source on spaceflight technology and there are no other sources. — Preceding unsigned comment added by 77.1.75.111 (talk) 20:15, 3 February 2014 (UTC)[reply]

Agreed, removed. Testem (talk) 12:32, 4 February 2014 (UTC)[reply]

Disagreed, reinstated. An excellent source - an advanced inorganic textbook. We rely on that source to support all sorts of claims and comments about manufacturing, uses, etc. Far better than a primary source per WP:SECONDARY. Respectfully, --Smokefoot (talk) 14:58, 4 February 2014 (UTC)[reply]

Normally I would agree with you but the source was published long after the claim was made here. It would not be the first time that a source citing wikipedia had been accidentally used to cite that same claim on wikipedia. Testem (talk) 09:48, 5 February 2014 (UTC)[reply]

Actually, maybe you have a point and my emphatic response was slightly overstated (as usual it seems). I searched Greenwood and Earnshaw (2nd and final edition) for 'Apollo' and found only discussion of hydrazine + N2O4 for the lunar lander. The section on alkali metal peroxides has this more vague comment "Sodium peroxide ...and CO2 liberates oxygen (an important application in breathing apparatus for divers, firemen,and in submarines - space capsules use the lighter Li202)". So maybe we are all partly correct and the statement should be modified until we get an Apollo-specific source. --Smokefoot (talk) 13:10, 5 February 2014 (UTC)[reply]

NASA website states that they used lithium hydroxide for CO2 scrubbing, at least on Apollo 13. http://www.nasa.gov/mission_pages/apollo/missions/apollo13.html It seems they were still evaluating lithium peroxide mid-way through the program (DOI: 10.2514/6.1969-620). The names sound similar, perhaps they've been confused? Project Osprey (talk) 23:36, 5 February 2014 (UTC)[reply]

Proposed edit[edit]

Yeah, I think then let's edit this to better reflect what the source actually says. Something like:

Lithium peroxide can be used in manned space missions to convert CO2 to O2 through the reaction :[reaction]. It is preferred to sodium peroxide because of its reduced mass.

Or

Lithium is preferred to sodium peroxide for converting CO2 to O2 in space missions because of its reduced mass.

Testem (talk) 13:46, 6 February 2014 (UTC)[reply]

Source 5: DOI does not work and I cannot find the cited article — Preceding unsigned comment added by 137.248.150.10 (talk) 12:28, 17 February 2015 (UTC) DoneTestem (talk) 12:10, 1 June 2015 (UTC)[reply]

Notes[edit]

^ "Physical Constants of Inorganic Compounds," in CRC Handbook of Chemistry and Physics, 91st Edition (Internet Version 2011), W. M. Haynes, ed., CRC Press/Taylor and Francis, Boca Raton, FL. (pp: 4-72).
^ Speight, James G. (2005). Lange's Handbook of Chemistry (16th Edition). (pp: 1.40). McGraw-Hill. Online version available at: http://www.knovel.com/web/portal/browse/display?_EXT_KNOVEL_DISPLAY_bookid=1347&VerticalID=0
^ Da Rosa, Aldo (2013). Fundamentals of Renewable Energy Processes. USA: Academic Press. p. 844. ISBN 9780123978257.

Wiki Education assignment: CHEM 300[edit]

This article was the subject of a Wiki Education Foundation-supported course assignment, between 8 January 2024 and 26 April 2024. Further details are available on the course page. Student editor(s): Ts2023tv (article contribs). Peer reviewers: Bonobo12345.

— Assignment last updated by RS UBC800 (talk) 19:29, 2 April 2024 (UTC)[reply]

[1] "Physical Constants of Inorganic Compounds," in CRC Handbook of Chemistry and Physics, 91st Edition (Internet Version 2011), W. M. Haynes, ed., CRC Press/Taylor and Francis, Boca Raton, FL. (pp: 4-72).

[2] Speight, James G. (2005). Lange's Handbook of Chemistry (16th Edition). (pp: 1.40). McGraw-Hill. Online version available at: http://www.knovel.com/web/portal/browse/display?_EXT_KNOVEL_DISPLAY_bookid=1347&VerticalID=0

[3] Da Rosa, Aldo (2013). Fundamentals of Renewable Energy Processes. USA: Academic Press. p. 844. ISBN 9780123978257.

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