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Theoretical/Experimental work

Selective hydrogenation of fatty substances in microcapillary reactor

Course of Study: CIW / BIW


In the course of the shortage of fossil resources as input materials in the chemical industry, fats and oils, among others, are gaining in importance. In order to selectively carry out subsequent chemistry on a double bond in the fat chain, it is essential to hydrogenate naturally occurring mixtures of fats with different compositions with respect to the number of double bonds, whereby only one double bond should remain (Fig. 1). This can be achieved with a novel catalyst present in a second liquid phase. In this work, the reaction will be transferred to a continuous mode and this will be compared with batch experiments. For this purpose, an existing capillary reactor is used to minimize mass and energy transport limitations. The resulting three-phase system (Fig. 2) poses special challenges, so influences of e.g. phase ratios and solvents on the flow pattern will be investigated.
Subsequently, operation over a longer period of time shall be enabled.


  • Adaptation of the apparatus setup
  • Investigation of the flow behavior
  • Determination of the optimal reaction system
  • Carrying out reactions in the capillary reactor
  • Long-term behavior and first recycling investigation
  • Comparison with batch experiments
  • Evaluation of reaction performance by means of


As of now!


M. Sc. Florian Lehmann
Room G1-512
+49 231 / 755-2316

M. Sc. Niclas von Vietinghoff-Scheel
Room G1-511
+49 231 / 755-3417

You can also find this notice in German at Moodle under

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Fig. 1: Reaction scheme
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Fig. 2: Schematic of the flow in the capillary

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