| EPSRC Reference: |
GR/N00913/01 |
| Title: |
ABSOLUTE H ATOM BRANCHING RATIOS FROM MULTICHANNEL REACTIONS VIA A CHEMICAL TITRATION METHOD |
| Principal Investigator: |
Seakins, Professor P |
| Other Investigators: |
|
| Researcher Co-Investigators: |
|
| Project Partners: |
|
| Department: |
Sch of Chemistry |
| Organisation: |
University of Leeds |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 January 2000 |
Ends: |
30 September 2003 |
Value (£): |
203,898
|
| EPSRC Research Topic Classifications: |
| Gas & Solution Phase Reactions |
|
|
| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
|
|
| Related Grants: |
|
| Panel History: |
|
|
Summary on Grant Application Form |
|
Despite their importance, little is known about branching ratios for many radical reactions of relevance to combustion, atmospheric, interstellar and other areas of gas phase chemistry. This is especially true for H atom producing channels due to the difficulties associated with spectroscopic observation. The aim of this proposal is to quantitatively measure absolute branching ratios of H atom production by titrating H atoms to more readily observable vibrationally excited OH radicals (observed by LIF) via the well characterised reaction with NO2. Reactions will take place in temperature controllable (200-1000 K) reactin cells and be initiated by laser flash photolysis. The kinetics of H and NO2 reactions is such that the titration reaction and the reaction under study can be kinetically separated. Vibrationally excited OH radicals will be monitored to enhance the specificity of the technique. The technique will be applied to a number of reactions of relevance to soot formation DeNOx, planetary and interstellar chemistry. Where possible the data will be interpreted using statistical models to allow for the extrapolation of results outside the experimental conditions. The proposal will focus on reactions that provide both practical information and help to validate ab initio calculations of reactive potential energy surfaces.
|
|
Key Findings |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Potential use in non-academic contexts |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Impacts |
|
| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
|
| Date Materialised |
|
|
|
|
Sectors submitted by the Researcher |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
| Project URL: |
|
| Further Information: |
|
| Organisation Website: |
http://www.leeds.ac.uk |