Issue 5, 2024

A comparative study of transient flow rate steps and ramps for the efficient collection of kinetic data

Abstract

Transient cumulative flow rate varying methods have proven very effective for the collection of residence time series data for reactions in continuous flow. In this study, comparisons will be made between data collected from step changes and linear flow rate ramps, to inform method choice and minimise the complexity of automation and control needed to implement these methods, without compromising the quality of the data. Using two different analytical tools (in-line FTIR and on-line HPLC), the methods were compared in two different flow system configurations, and across three chemical reactions of increasing complexity. This work finds that the quality of the data collected using simpler step changes are comparable to that collected using more complex ramping methods, when performed in a reverse push-out (high to low flow rate) manner.

Graphical abstract: A comparative study of transient flow rate steps and ramps for the efficient collection of kinetic data

Supplementary files

Article information

Article type
Paper
Submitted
20 Dec 2023
Accepted
08 Feb 2024
First published
08 Feb 2024
This article is Open Access
Creative Commons BY license

React. Chem. Eng., 2024,9, 1077-1086

A comparative study of transient flow rate steps and ramps for the efficient collection of kinetic data

L. Schrecker, J. Dickhaut, C. Holtze, P. Staehle, M. Vranceanu, A. Wieja, K. Hellgardt and K. K. Hii, React. Chem. Eng., 2024, 9, 1077 DOI: 10.1039/D3RE00696D

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