On-Line Composition Analysis of Complex Hydrocarbon Streams by Time-Resolved Fourier Transform Infrared Spectroscopy and Ion− Molecule Reaction Mass Spectrometry
Journal article, 2021

On-line composition analysis of complex hydrocarbon mixtures is highly desirable to determine the composition of process streams and to study chemical reactions in heterogeneous catalysis. Here, we show how the combination of time-resolved Fourier transform infrared spectroscopy and ion−molecule-reaction mass spectrometry (IMR-MS) can be used for compositional analysis of processed plant biomass streams. The method is based on the biomass-derived model compound 2,5-dimethylfuran and its potential catalytic conversion to valuable green aromatics, for example, benzene, toluene, and ylenes (BTX) over zeolite β. Numerous conversion products can be determined and quantified simultaneously in a temporal resolution of 4 min−1 without separation of individual compounds. The realization of this method enables us to study activity, selectivity, and changes in composition under transient reaction conditions. For example, increasing isomerization of 2,5-dimethylfuran to 2,4-dimethylfuran, 2-methyl-2-cyclopenten-1-one, and 2-methyl-2-cyclopenten-1-one is observed as the catalyst is exposed to the reactant, while BTX and olefin formation is decreasing.

Fourier transform infrared spectroscopy




Aromatic compounds


Christopher Sauer

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Anders Lorén

RISE Research Institutes of Sweden

Andreas Schaefer

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Per-Anders Carlsson

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Analytical Chemistry

0003-2700 (ISSN) 1520-6882 (eISSN)

Vol. 93 39 13187-13195

Green aromatics for a biobased economy

Formas (2017-00420), 2018-01-01 -- 2020-12-31.

Subject Categories

Physical Chemistry

Analytical Chemistry

Other Electrical Engineering, Electronic Engineering, Information Engineering

Areas of Advance

Materials Science



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4/5/2022 5