Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Quantitative On-line High-Resolution NMR Spectroscopy in Process Engineering Applications

There are no MPG-Authors in the publication available
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available

Maiwald, M., Fischer, H., Kim, Y.-K., & Hasse, H. (2003). Quantitative On-line High-Resolution NMR Spectroscopy in Process Engineering Applications. Analytical and Bioanalytical Chemistry, 375(8), 1111-1115. doi:10.1007/s00216-002-1723-y.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-DD78-1
In many technical processes, complex multicomponent mixtures have to be handled, for example, in reaction or separation equipment. High-resolution NMR spectroscopy is an excellent tool to study these mixtures and gain insight in their behavior in the processes. For on-line studies under process conditions, flow NMR probes can be used in a wide range of temperature and pressure. A major challenge in engineering applications of NMR spectroscopy is the need for quantitative evaluation. Flow rates, recovery times, and other parameters of the on-line NMR experiments have to be optimized for this purpose. Since it is generally prohibitive to use deuterated solvents in engineering applications, suitable techniques for field homogenization and solvent signal suppression are needed. Two examples for the application of on-line NMR spectroscopic experiments in process engineering are presented, studies on chemical equilibria and reaction kinetics of the technically important system formaldehydendashwaterndashmethanol and investigations on reactive gas absorption of CO2 in aqueous solutions of monoethanolamine.