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Enhancing Biogenic Formic Acid Production in the Modified OxFA Process by Acetonitrile Addition
Jan-Dominik H Krueger1, Pegah Saedi1, Maximilian J Poller1
1Institute of Technical and Macromolecular Chemistry, University of Hamburg, Hamburg, Germany.
Summary
Acetonitrile as a co-solvent enhances the OxFA process for converting xylose to formic acid (FA). This modification improves reaction kinetics and selectivity, offering a more sustainable chemical industry approach.
Area of Science:
- Sustainable chemistry
- Biomass valorization
- Catalysis
Background:
- Developing efficient biomass transformation techniques is crucial for a sustainable chemical industry.
- The OxFA process offers a promising route for producing short-chain carboxylic acids, such as formic acid (FA).
Purpose of the Study:
- To investigate the effect of co-solvents on the HPA-2 catalyzed oxidation of xylose to FA.
- To compare the performance of acetonitrile and methanol as co-solvents in the modified OxFA process.
Main Methods:
- Homogeneous catalysis using HPA-2 (H5PV2Mo10O40)
- Spectroscopic investigations (51V-NMR, UV-vis)
- Electrochemical studies (SWV)
- Electron Paramagnetic Resonance (EPR) measurements
- Density Functional Theory (DFT) calculations
Main Results:
- Acetonitrile as a co-solvent demonstrated superior performance compared to methanol in the modified OxFA process.
- Improved reaction kinetics and high selectivity for FA production were observed with acetonitrile.
- Spectroscopic and computational studies revealed direct interactions between co-solvents and the HPA-2 catalyst.
Conclusions:
- Acetonitrile addition enhances both the kinetics and selectivity of xylose oxidation to FA.
- The findings provide new insights for optimizing the OxFA technology towards higher productivity.
- This study contributes to advancing industrially viable biomass valorization processes.
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