Oxygen sensors for flow reactors-measuring dissolved oxygen in organic solvents

5Citations
Citations of this article
23Readers
Mendeley users who have this article in their library.

Abstract

In an effort to push the boundaries of optical oxygen sensors, this contribution shows the development of a measurement system for high O2 content in organic solvents specifically designed for flow reactors. Presented sensors were prepared by directly melting an oxygen indicator dye into a highly resistant polymer matrix, leading to the ability to measure oxygen contents up to 59 mmol L-1 in tetrahydrofuran, toluene, acetone, dimethylformamide, cyclohexane and methyl tert-butyl ether. Long-term effects to the solvent were investigated by exposing the sensors for 22 hours to the respective solvent at 25 °C. Linearity according to Stern-Volmer was obtained for every single sensor in order to provide a system that can be easily initialized by two-point calibration into continuous flow reactors. To demonstrate the applicability of the sensor under reaction conditions, an oxidation of a Grignard reagent with molecular oxygen was performed in a flow reactor. The sensors were able to show the oxygen decrease during reaction and allowed online reactant quantification.

Cite

CITATION STYLE

APA

Sulzer, P., Lebl, R., Kappe, C. O., & Mayr, T. (2019). Oxygen sensors for flow reactors-measuring dissolved oxygen in organic solvents. Reaction Chemistry and Engineering, 4(12), 2081–2087. https://doi.org/10.1039/c9re00253g

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free