HO2*-initiated Oxidation As An Efficient Acetone Sink - PubMed

Clipboard, Search History, and several other advanced features are temporarily unavailable. Skip to main page content

The .gov means it’s official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

The site is secure. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation Search: Search Advanced Clipboard Save Email Send to

• Clipboard
• My Bibliography
• Collections
• Citation manager

Display options Display options Format Abstract PubMed PMID

Save citation to file

Format: Summary (text) PubMed PMID Abstract (text) CSV Create file Cancel

Email citation

Subject: 1 selected item: 15303850 - PubMed To: From: Format: Summary Summary (text) Abstract Abstract (text) MeSH and other data Send email Cancel

Add to Collections

• Create a new collection
• Add to an existing collection

Name your collection: Name must be less than 100 characters Choose a collection: Unable to load your collection due to an error Please try again Add Cancel

Add to My Bibliography

• My Bibliography

Unable to load your delegates due to an error Please try again Add Cancel

Your saved search

Name of saved search: Search terms: Test search terms Would you like email updates of new search results? Saved Search Alert Radio Buttons

• Yes
• No

Email: (change) Frequency: Monthly Weekly Daily Which day? The first Sunday The first Monday The first Tuesday The first Wednesday The first Thursday The first Friday The first Saturday The first day The first weekday Which day? Sunday Monday Tuesday Wednesday Thursday Friday Saturday Report format: Summary Summary (text) Abstract Abstract (text) PubMed Send at most: 1 item 5 items 10 items 20 items 50 items 100 items 200 items Send even when there aren't any new results Optional text in email: Save Cancel

Create a file for external citation management software

Create file Cancel

Your RSS Feed

Name of RSS Feed: Number of items displayed: 5 10 15 20 50 100 Create RSS Cancel RSS Link Copy

Full text links

American Chemical Society Full text links

Actions

CiteCollectionsAdd to Collections

• Create a new collection
• Add to an existing collection

Name your collection: Name must be less than 100 characters Choose a collection: Unable to load your collection due to an errorPlease try again Add Cancel Display options Display options Format AbstractPubMedPMID

Share

• Permalink Copy

Page navigation

• Title & authors
• Abstract
• Similar articles
• Related information
• LinkOut - more resources

Title & authors Abstract Similar articles Related information LinkOut - more resources Full text links CiteDisplay options Display options Format AbstractPubMedPMID

Abstract

Acetone is known to be a key species in the chemistry of the Upper Troposphere and Lower Stratosphere. In this theoretical study, using amply validated methodologies, the hitherto overlooked reaction of acetone with HO2* radicals is found to lead to a fast equilibrium (CH3)2C=O + HO2* right harpoon over left harpoon (CH3)2C(OH)OO*. At room temperature, this is shifted entirely to the left and thus of no consequence. However, near the tropopause (T </= 220 K), the equilibrium is shown to shift to the right to such an extent that the subsequent reaction of (CH3)2C(OH)OO* with (partly air-traffic-generated) NO becomes an effective acetone sink. This process finally results in acetic acid, thus explaining the great abundance of this important organic acid observed near the tropopause.

PubMed Disclaimer

Similar articles

• Kinetics of alpha-hydroxy-alkylperoxyl radicals in oxidation processes. HO2*-initiated oxidation of ketones/aldehydes near the tropopause. Hermans I, Müller JF, Nguyen TL, Jacobs PA, Peeters J. Hermans I, et al. J Phys Chem A. 2005 May 19;109(19):4303-11. doi: 10.1021/jp044080v. J Phys Chem A. 2005. PMID: 16833760
• Thermochemical and kinetic analysis on the reactions of O2 with products from OH addition to isobutene, 2-hydroxy-1,1-dimethylethyl, and 2-hydroxy-2-methylpropyl radicals: HO2 formation from oxidation of neopentane, Part II. Sun H, Bozzelli JW, Law CK. Sun H, et al. J Phys Chem A. 2007 Jun 14;111(23):4974-86. doi: 10.1021/jp070072d. Epub 2007 May 19. J Phys Chem A. 2007. PMID: 17511431
• Mechanism of thermal toluene autoxidation. Hermans I, Peeters J, Vereecken L, Jacobs PA. Hermans I, et al. Chemphyschem. 2007 Dec 21;8(18):2678-88. doi: 10.1002/cphc.200700563. Chemphyschem. 2007. PMID: 18061915
• Mechanism of the OH-initiated oxidation of hydroxyacetone over the temperature range 236-298 K. Butkovskaya NI, Pouvesle N, Kukui A, Mu Y, Le Bras G. Butkovskaya NI, et al. J Phys Chem A. 2006 Jun 1;110(21):6833-43. doi: 10.1021/jp056345r. J Phys Chem A. 2006. PMID: 16722699
• Analysis of HO2 and OH formation mechanisms using FM and UV spectroscopy in dimethyl ether oxidation. Suzaki K, Tsuchiya K, Koshi M, Tezaki A. Suzaki K, et al. J Phys Chem A. 2007 May 17;111(19):3776-88. doi: 10.1021/jp067646j. Epub 2007 Apr 25. J Phys Chem A. 2007. PMID: 17455918

See all similar articles

Related information

• PubChem Compound
• PubChem Substance

LinkOut - more resources

• Full Text Sources

  • American Chemical Society

Full text links [x] American Chemical Society [x] Cite Copy Download .nbib .nbib Format: AMA APA MLA NLM Send To

• Clipboard
• Email
• Save
• My Bibliography
• Collections
• Citation Manager

[x]

NCBI Literature Resources

MeSH PMC Bookshelf Disclaimer

The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). Unauthorized use of these marks is strictly prohibited.