U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Jeffrey A. Manion (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 26 - 50 of 56

Annual Report to Sponsor: Understanding Unwanted Combustion Enhancement by Potential Halon Replacements

February 3, 2012
Author(s)
Gregory T. Linteris, Jeffrey A. Manion, Donald R. Burgess Jr., Iftikhar A. Awan, Peter B. Sunderland, John L. Pagliaro
This year, we continued work to numerically model the behavior of the Halon replacements in the FAA Aerosol Can Test (FAA-ACT) to understand why they are causing more overpressure rather than flame extinction. The goal is to understand the process to

Standard Reactions for Comparative Rate Studies: Experiments on the Dehydrochlorination Reactions of 2 Chloropropane, Chlorocyclopentane and Chlorocyclohexane

November 23, 2011
Author(s)
Iftikhar A. Awan, Donald R. Burgess Jr., Wing Tsang, Jeffrey A. Manion
Single pulse shock tube studies of the thermal dehydrochlorination reactions (chlorocyclopentane → cyclopentene + HCl) and (chlorocyclohexane → cyclohexene + HCl) at temperatures of 843 to 1021 K and pressures of 1.4 to 2.4 bar have been carried out using

Reversed-Flow Chromatographic Determination of Binary Diffusion Coefficients

September 19, 2011
Author(s)
William S. McGivern, Jeffrey A. Manion
A reversed-flow chromatographic apparatus for the measurement of binary diffusion coefficients is described. Hydrocarbons are detected using flame ionization detection, and inert species can be detected by thermal conductivity. We have measured the binary

H Atom Attack on Propene

March 15, 2011
Author(s)
Claudette M. Rosado-Reyes, Jeffrey A. Manion, Wing Tsang
The reaction of propene(CH3CH=CH2) with hydrogen atoms has been investigated in a heated single-pulsed shock tube at temperature between 929K-1212K and pressures of 1.7bar-3.4bar. Stable products from H atom addition and H abstraction have been identified

The Decomposition and Isomerization of 5-Methylhex-1-yl Radical

July 9, 2010
Author(s)
Iftikhar A. Awan, William S. McGivern, Wing Tsang, Jeffrey A. Manion
The decomposition and isomerization reactions of the 5-methylhex-1-yl radical (1-5MeH) have been studied at temperatures of 889 K to 1064 K and pressures of 1.6 bar to 2.2 bar using the single pulse shock tube technique. The radical of interest was

Kinetics of the Thermal Reaction of H Atoms with Propyne

April 15, 2010
Author(s)
Claudette M. Rosado-Reyes, Jeffrey A. Manion, Wing Tsang
The reaction of hydrogen atoms with propyne(CH≡CCH3) has been investigated in a heated single pulse shock tube at temperatures of 870-1145K and pressures of 2-9 bar. Stable products from various reaction channels (terminal and non-terminal H addition, and

Soot Precursors from Real Fuels: The Unimolecular Reactions of Fuel Radicals

October 16, 2008
Author(s)
Wing Tsang, Iftikhar A. Awan, William Sean McGivern, Jeffrey A. Manion
This paper describes studies aimed at defining in a quantitative fashion the cracking pattern of fuel radicals under combustion conditions. The experimental procedure involves studies using a single pulse shock tube and combining the observations with

Multichannel Decomposition and Isomerization of Octyl Radicals

October 9, 2008
Author(s)
Wing Tsang, William S. McGivern, Jeffrey A. Manion
The thermal cracking patterns from the decomposition and isomerization of octyl-1 radicals have been determined from the pyrolysis of n-octyl iodide in single pulse shock tube experiments at temperatures in the 850-1000 K range and pressures near 2 bar

Ring Expansion Reactions in the Thermal Decomposition of t-Butyl-1,3-Cyclopentadiene

November 30, 2006
Author(s)
William S. McGivern, Jeffrey A. Manion, Wing Tsang
The thermal decomposition of t-butyl-1,3-cyclopentadiene has been investigated in single pulse shock tube studies at shock pressures of 182 260 kPa and temperatures of 996 1127 K. Isobutene (2-methylpropene), 1,3-cyclopentadiene, and toluene are observed

Multichannel Decomposition of Heptyl Radicals

April 1, 2003
Author(s)
Wing Tsang, Iftikhar A. Awan, Jeffrey A. Manion
This paper is concerned with decomposition of heptyl radicals in high temperature combustion environments. Experimental results on the decomposition of n-heptyl iodide in single pulse shock tube studies will be presented. All the products resulting from

Thermal Decomposition of 2-Bromopropene, and 2-Chloropropene

March 24, 2003
Author(s)
K Roy, Iftikhar A. Awan, Jeffrey A. Manion, Wing Tsang
2-Chloropropene and 2-bromopropene have been decomposed in single pulse shock tube experiments. The only products under all conditions are propyne and allene. The high pressure rate expressions arek(2-BrC 3H 5 => propyne/allene + HBr) =10 14.12 exp(-3283OK

Binary Diffusion Coefficients for Combustion Modeling

November 30, 2002
Author(s)
William S. McGivern, Jeffrey A. Manion
Recent studies have demonstrated that combustion models can be as sensitive to the binary diffusion coefficients of the fuel species as to the kinetics of major chemical reactions. We have constructed a reversed-flow chromatographic apparatus for the

Reaction Kinetics of 2-Propanol Dehydration in Supercritical Water

March 1, 2002
Author(s)
V I. Anikeev, A Ermakova, Jeffrey A. Manion, Robert E. Huie
A study of the kinetics and mechanism of chemical reactions in supercritical fluids is considered. An experimental procedure was proposed for examining reversible chemical reactions in supercritical water. The reaction kinetics of 2-propanol dehydration in

Commemorative Issue for Prof. Simon H. Bauer II: Editorial Comment

December 1, 2001
Author(s)
Wing Tsang, Robert E. Huie, Jeffrey A. Manion
The next two issues of the International Journal of Chemical Kinetics are dedicated to Prof. Simon H. Bauer on the occasion of his 90th birthday. These issues contain a number of papers by his students and colleagues who have built on his pioneering

1,2-Pentadiene Decomposition

November 1, 2001
Author(s)
J Herzler, Jeffrey A. Manion, Wing Tsang
1,2-Pentadiene has been decomposed in single pulse shock tube experiments. There appear to be a large number of parallel decomposition and isomerization channels. The following rate expressions for isomerization in the temperature range 1100 K-1250 K and 2

Commemorative Issue for Professor Simon H. Bauer I: Editorial Comment

November 1, 2001
Author(s)
Wing Tsang, Robert E. Huie, Jeffrey A. Manion
The next two issues of the International Journal of Chemical Kinetics are dedicated to Prof. Simon H. Bauer on the occasion of his 90th birthday. These issues contain a number of papers by his students and colleagues who have built on his pioneering