Aspectrics's new application note demonstrates the ability of the company's EP-IR spectroscopy technology to record in detail all chemical information pertaining to an ultra-rapid chemical reaction
The results from this application revealed that EP-IR technology is capable of capturing reaction information over the entire spectral range at an ultra-fast rate of 10milliseconds, resolving phenomena such as energy combustion, water vapour and CO2 overtone as short as 30milliseconds.
The new application note allows users in the process industry to monitor their processes in real time and is available to download free-of-charge..
This application was carried out using Aspectrics's MC5000A 128-channels EP-IR analyser covering the 2.5-5.0um spectral range was used to record the kinetics of methanol explosive combustion.
The spectrometer was mounted on the Aspectrics multipurpose sampling bench without accessories in the sample compartment.
The Mid-IR source was continuously left on to provide baseline emission signal.
Approximately 2-3ml of methanol was placed in an Erlenmeyer flask.
A slow and continuous flow of air was injected at the bottom of the Erlenmeyer to ensure regular outflow of methanol vapour from the neck of the Erlenmeyer.
After a few minutes of air flowing into the methanol, the methanol vapour was ignited using a lit wooden match, resulting in simultaneous real-time observation pertaining to the thermodynamics of the reaction and the formation of the products of the reaction.
EP-IR spectroscopy is a novel technique allowing access to full spectrum information with an outstanding speed of 100 scans per second.
EP-IR spectrometers rely upon the use of a single, non-hygroscopic, vibration insensitive proprietary encoder disk with an MTBF superior to 50,000 continuous use hours.
This post-dispersive technology enables the design and implementation of many different sampling technologies for the analysis of gases, liquids or solids.
It also allows for easy versatile use for emission, transmission and absorption spectroscopy techniques.
