Device and method for determining reaction kinetics
US9632095B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 16, 2015 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Nov 16, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining the activation energy Ea for degradation of a chemical species includes in sequence the steps of a) simultaneously incubating a plurality of samples of the chemical species in a single unitary device at a plurality of constant temperatures T, in each case for an incubation time t selected to result in loss of at most 20 mol % of the amount originally present; b) quenching each of the samples to stop degradation; c) determining the mole fraction m of the chemical species remaining in each of the quenched samples, relative to the amount present before incubating; d) determining for each sample a reaction rate coefficient kobs according to the equationand e) performing numerical regression of the kobs values obtained in step d) and the corresponding temperatures T in ° K to derive the activation energy Ea according to the following equationor to derive a temperature-dependent activation energy if that is more appropriate for the chemical species of interest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.