Temperature Dependence of the Absolute Third-order Rate Constant for the Reaction between Na + O₂ + N₂ over the Range 571 - 1016 K Studied by Time-resolved Atomic Resonance Absorption Spectroscopy

PDF Version Also Available for Download.

Description

Article on temperature dependence of the absolute third-order rate constant for the reaction between Na + O₂ + N₂ over the range 571-1016 K studied by time-resolved atomic resonance absorption spectroscopy.

Physical Description

18 p.

Creation Information

Husain, David; Marshall, Paul & Plane, John M. C. 1985.

Context

This article is part of the collection entitled: UNT Scholarly Works and was provided by UNT College of Arts and Sciences to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 158 times , with 11 in the last month . More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Authors

Publisher

Provided By

UNT College of Arts and Sciences

The UNT College of Arts and Sciences educates students in traditional liberal arts, performing arts, sciences, professional, and technical academic programs. In addition to its departments, the college includes academic centers, institutes, programs, and offices providing diverse courses of study.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Degree Information

Description

Article on temperature dependence of the absolute third-order rate constant for the reaction between Na + O₂ + N₂ over the range 571-1016 K studied by time-resolved atomic resonance absorption spectroscopy.

Physical Description

18 p.

Notes

Abstract: We present a detailed investigation of the absolute third-order reaction rate constant (k₁) for the process Na + O₂ + N₂ → NaO₂ + N₂ (1) measured over the temperature range T=571-1016 K. Na(3 ²S1/2) was generated by the pulsed irradiation of Nal vapour and monitored in the presence of O₂ and N₂ in the 'single-shot' time-resolved mode by atomic resonance absorption spectroscopy of the unresolved D-line doublet at λ = 589 nm [Na(3²P1/2, 3/2) ← Na(3²S1/2)]. A new experimental system has been specially designed for this temperature-dependent investigation. The diffusion coefficient, D(Na-N₂), has been measured in this temperature range, demonstrating a dependence on T1.52 ± 0.24 and yielding a value of D(Na - N₂) at s.t.p. of 0.15 ± 0.05 cm² s⁻¹. A limited body of data from similar measurements in neon yields D(Na-Ne) at s.t.p. = 0.19 ± 0.04 cm² s⁻¹. The data for k₁(Na + O₂ + N₂) within the temperature range 571-1016 K are described by the form k₁ = (1.11 ± 0.08) x 10⁻²³ Τ-2.47 ± 0.14 cm⁶ molecule ⁻²s⁻¹. However, for extrapolation to temperatures outside the measured regime the formalism of the unimolecular rate theory of Tröe, with a dependence of 〈∆E〉 on T-0.7, has been quantitatively employed to yield k₁ (200 K) and k₁ (2000 K) = 8.8 x 10⁻³⁰ and 6.8 x 10⁻³² cm⁶ molecule ⁻² s⁻¹, respectively. The extrapolated rate data are of particular relevance to the role of reaction (1) in the mesosphere and in flames. A limited body of rate data is reported for the effect of neon in the analogue of reaction (1) yielding k₁ (Na + O₂ + Ne) = (3.5 ± 0.2) x 10⁻³¹ and (2.7 ± 0.1) x 10⁻³¹ cm⁶ molecule ⁻² s⁻¹ at T = 726 and 844 K, respectively.

Source

  • Journal of the Chemical Society, Faraday Transactions, 1985, Cambridge: Royal Society of Chemistry (Great Britain), pp. 301-318

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

Publication Information

  • Publication Title: Journal of the Chemical Society, Faraday Transactions
  • Issue: 2
  • Page Start: 301
  • Page End: 318
  • Pages: 18
  • Peer Reviewed: Yes

Collections

This article is part of the following collection of related materials.

UNT Scholarly Works

Materials from the UNT community's research, creative, and scholarly activities and UNT's Open Access Repository. Access to some items in this collection may be restricted.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • 1985

Added to The UNT Digital Library

  • Jan. 22, 2015, 9:04 a.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 11
Total Uses: 158

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Husain, David; Marshall, Paul & Plane, John M. C. Temperature Dependence of the Absolute Third-order Rate Constant for the Reaction between Na + O₂ + N₂ over the Range 571 - 1016 K Studied by Time-resolved Atomic Resonance Absorption Spectroscopy, article, 1985; [Cambridge, England]. (digital.library.unt.edu/ark:/67531/metadc488174/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.