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Fleitmann L, Gertig C, Scheffczyk J, Schilling J, Leonhard K, Bardow A. From Molecules to Heat‐Integrated Processes: Computer‐Aided Design of Solvents and Processes Using Quantum Chemistry. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202200098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Lorenz Fleitmann
- ETH Zürich Department of Mechanical and Process Engineering, Energy and Process Systems Engineering Tannenstrasse 3 8092 Zürich Switzerland
- RWTH Aachen University Institute of Technical Thermodynamics Schinkelstraße 8 52062 Aachen Germany
| | - Christoph Gertig
- RWTH Aachen University Institute of Technical Thermodynamics Schinkelstraße 8 52062 Aachen Germany
| | - Jan Scheffczyk
- RWTH Aachen University Institute of Technical Thermodynamics Schinkelstraße 8 52062 Aachen Germany
| | - Johannes Schilling
- ETH Zürich Department of Mechanical and Process Engineering, Energy and Process Systems Engineering Tannenstrasse 3 8092 Zürich Switzerland
| | - Kai Leonhard
- RWTH Aachen University Institute of Technical Thermodynamics Schinkelstraße 8 52062 Aachen Germany
| | - André Bardow
- ETH Zürich Department of Mechanical and Process Engineering, Energy and Process Systems Engineering Tannenstrasse 3 8092 Zürich Switzerland
- RWTH Aachen University Institute of Technical Thermodynamics Schinkelstraße 8 52062 Aachen Germany
- Forschungszentrum Jülich GmbH Institute of Energy and Climate Research (IEK-10) Wilhelm-Johnen-Straße 52425 Jülich Germany
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Kessler E, Ninni L, Breug-Nissen T, Willy B, Schneider R, Irfan M, Rolker J, Thiel WR, von Harbou E, Hasse H. Speciation in CO2-loaded aqueous solutions of sixteen triacetoneamine-derivates (EvAs) and elucidation of structure-property relationships. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.115999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Steimers E, Sawall M, Behrens R, Meinhardt D, Simoneau J, Münnemann K, Neymeyr K, von Harbou E. Application of a new method for simultaneous phase and baseline correction of NMR signals (SINC). Magn Reson Chem 2020; 58:260-270. [PMID: 31710133 DOI: 10.1002/mrc.4964] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/17/2019] [Accepted: 10/25/2019] [Indexed: 06/10/2023]
Abstract
Recently, we presented a new approach for simultaneous phase and baseline correction of nuclear magnetic resonance (NMR) signals (SINC) that is based on multiobjective optimization. The algorithm can automatically correct large sets of NMR spectra, which are commonly acquired when reactions and processes are monitored with NMR spectroscopy. The aim of the algorithm is to provide spectra that can be evaluated quantitatively, for example, to calculate the composition of a mixture or the extent of reaction. In this work, the SINC algorithm is tested in three different studies. In an in-house comparison study, spectra of different mixtures were corrected both with the SINC method and manually by different experienced users. The study shows that the results of the different users vary significantly and that their average uncertainty of the composition measurement is larger than the uncertainty obtained when the spectra are corrected with the SINC method. By means of a dilution study, we demonstrate that the SINC method is also applicable for the correction of spectra with low signal-to-noise ratio. Furthermore, a large set of NMR spectra that was acquired to follow a reaction was corrected with the SINC method. Even in this system, where the areas of the peaks and their chemical shifts changed during the course of reaction, the SINC method corrected the spectra robustly. The results show that this method is especially suited to correct large sets of NMR spectra and it is thus an important contribution for the automation of the evaluation of NMR spectra.
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Affiliation(s)
- Ellen Steimers
- Laboratory of Engineering Thermodynamics (LTD), Technische Universität Kaiserslautern, Kaiserslautern, Germany
| | - Mathias Sawall
- Institute of Mathematics, University of Rostock, Rostock, Germany
| | - Richard Behrens
- Laboratory of Engineering Thermodynamics (LTD), Technische Universität Kaiserslautern, Kaiserslautern, Germany
| | - Denise Meinhardt
- Institute of Mathematics, University of Rostock, Rostock, Germany
- Leibniz Institut für Katalyse, Rostock, Germany
| | - Joël Simoneau
- Department of Chemical and Biotechnological Engineering, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Kerstin Münnemann
- Laboratory of Engineering Thermodynamics (LTD), Technische Universität Kaiserslautern, Kaiserslautern, Germany
| | - Klaus Neymeyr
- Institute of Mathematics, University of Rostock, Rostock, Germany
- Leibniz Institut für Katalyse, Rostock, Germany
| | - Erik von Harbou
- Laboratory of Engineering Thermodynamics (LTD), Technische Universität Kaiserslautern, Kaiserslautern, Germany
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Perinu C, Bernhardsen IM, Pinto DDD, Knuutila HK, Jens KJ. Aqueous MAPA, DEEA, and Their Blend as CO 2 Absorbents: Interrelationship between NMR Speciation, pH, and Heat of Absorption Data. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01437] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cristina Perinu
- Department of Process, Energy and Environmental Technology, University of Southeast Norway, Post Box 235, NO-3603 Kongsberg, Norway
| | - Ida M. Bernhardsen
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
| | - Diego D. D. Pinto
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
| | - Hanna K. Knuutila
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
| | - Klaus J. Jens
- Department of Process, Energy and Environmental Technology, University of Southeast Norway, Post Box 235, NO-3603 Kongsberg, Norway
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Jirasek F, Burger J, Hasse H. NEAT—NMR Spectroscopy for the Estimation of Activity Coefficients of Target Components in Poorly Specified Mixtures. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01269] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fabian Jirasek
- Laboratory of Engineering Thermodynamics (LTD), TU Kaiserslautern, Erwin-Schrödinger-Straße 44, Kaiserslautern, 67663, Germany
| | - Jakob Burger
- Chair of Chemical Process Engineering, Technical University of Munich, Campus Straubing for Biotechnology and Sustainability, Schulgasse 16, Straubing, 94315, Germany
| | - Hans Hasse
- Laboratory of Engineering Thermodynamics (LTD), TU Kaiserslautern, Erwin-Schrödinger-Straße 44, Kaiserslautern, 67663, Germany
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Affiliation(s)
- Phitchan Sricharoen
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Nunticha Limchoowong
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Charles Phillip Shelor
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Purnendu K. Dasgupta
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019-0065, United States
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Sawall M, von Harbou E, Moog A, Behrens R, Schröder H, Simoneau J, Steimers E, Neymeyr K. Multi-objective optimization for an automated and simultaneous phase and baseline correction of NMR spectral data. J Magn Reson 2018; 289:132-141. [PMID: 29510348 DOI: 10.1016/j.jmr.2018.02.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 02/12/2018] [Accepted: 02/13/2018] [Indexed: 06/08/2023]
Abstract
Spectral data preprocessing is an integral and sometimes inevitable part of chemometric analyses. For Nuclear Magnetic Resonance (NMR) spectra a possible first preprocessing step is a phase correction which is applied to the Fourier transformed free induction decay (FID) signal. This preprocessing step can be followed by a separate baseline correction step. Especially if series of high-resolution spectra are considered, then automated and computationally fast preprocessing routines are desirable. A new method is suggested that applies the phase and the baseline corrections simultaneously in an automated form without manual input, which distinguishes this work from other approaches. The underlying multi-objective optimization or Pareto optimization provides improved results compared to consecutively applied correction steps. The optimization process uses an objective function which applies strong penalty constraints and weaker regularization conditions. The new method includes an approach for the detection of zero baseline regions. The baseline correction uses a modified Whittaker smoother. The functionality of the new method is demonstrated for experimental NMR spectra. The results are verified against gravimetric data. The method is compared to alternative preprocessing tools. Additionally, the simultaneous correction method is compared to a consecutive application of the two correction steps.
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Affiliation(s)
- Mathias Sawall
- Universität Rostock, Institut für Mathematik, Ulmenstraße 69, 18057 Rostock, Germany
| | - Erik von Harbou
- Technische Universität Kaiserslautern, Lehrstuhl für Thermodynamik, Erwin-Schrödinger-Straße 44, 67663 Kaiserslautern, Germany
| | - Annekathrin Moog
- Universität Rostock, Institut für Mathematik, Ulmenstraße 69, 18057 Rostock, Germany
| | - Richard Behrens
- Technische Universität Kaiserslautern, Lehrstuhl für Thermodynamik, Erwin-Schrödinger-Straße 44, 67663 Kaiserslautern, Germany
| | - Henning Schröder
- Universität Rostock, Institut für Mathematik, Ulmenstraße 69, 18057 Rostock, Germany
| | - Joël Simoneau
- Université de Sherbrooke, Department of Chemical & Biotechnological Engineering, 2500 Blvd. de L'Université, Sherbrooke, Canada
| | - Ellen Steimers
- Technische Universität Kaiserslautern, Lehrstuhl für Thermodynamik, Erwin-Schrödinger-Straße 44, 67663 Kaiserslautern, Germany
| | - Klaus Neymeyr
- Universität Rostock, Institut für Mathematik, Ulmenstraße 69, 18057 Rostock, Germany; Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany.
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Perinu C, Bernhardsen IM, Pinto DDD, Knuutila HK, Jens KJ. NMR Speciation of Aqueous MAPA, Tertiary Amines, and Their Blends in the Presence of CO2: Influence of pKa and Reaction Mechanisms. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b03795] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cristina Perinu
- Department
of Process, Energy and Environmental Technology, University College of Southeast Norway, Postbox 235, NO-3603 Kongsberg, Norway
| | - Ida M. Bernhardsen
- Department
of Chemical Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
| | - Diego D. D. Pinto
- Department
of Chemical Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
| | - Hanna K. Knuutila
- Department
of Chemical Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
| | - Klaus-J. Jens
- Department
of Process, Energy and Environmental Technology, University College of Southeast Norway, Postbox 235, NO-3603 Kongsberg, Norway
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