A5065776261- Thermochemical Biomass Conversion Processes
- Lignin and Wood Chemistry
- Biochemical and biochemical processes
- Catalysis and Hydrodesulfurization Studies
- Advanced Thermodynamics and Statistical Mechanics
- Nanomaterials for catalytic reactions
- NMR spectroscopy and applications
- Microplastics and Plastic Pollution
- biodegradable polymer synthesis and properties
- Fermentation and Sensory Analysis
- Metabolomics and Mass Spectrometry Studies
- Catalysts for Methane Reforming
- Biofuel production and bioconversion
- Electrospun Nanofibers in Biomedical Applications
- Catalytic Processes in Materials Science
- Coal and Its By-products
- Zeolite Catalysis and Synthesis
- Spectroscopy and Chemometric Analyses
- Catalysis for Biomass Conversion
University of Groningen
2019-2025
Accumulation of non-degradable plastic waste in the environment might be prevented by use biodegradable polyhydroxyalkanoate (PHA). In this study, thermophile Schlegelella thermodepolymerans produced up to 80 wt% PHA based on dry cell mass. The largest granules were found cells within 48 h using 20 g/L xylose, a C/N ratio 100, an initial pH 7, at 50 °C. substrate consumption, changes, and growth monitored, revealing time dependency production S. thermodepolymerans. metabolic pathways from...
This work comprehensively evaluates three additives to improve lignin fast pyrolysis into key aromatics on practical and chemical levels.
Pyrolysis liquids from lignocellulosic biomass have the potential to be used as a feed for aromatics such benzene, toluene, and xylenes (BTX) using catalytic upgrading with zeolites. We here report an experimental study on conversion of various pyrolysis oil fractions determine most suitable one BTX synthesis. For this purpose, liquid was fractionated several extraction/distillation steps give four different chemical compositions. The were analyzed in detail nuclear magnetic resonance...
CO2-containing synthesis gas is a relevant feedstock for the production of synthetic fuels using Fischer-Tropsch Synthesis. We report role CO2 in CO2, CO and H2 mixed feeds over cobalt-based catalyst at 220 °C 21 bar packed bed reactor. The C5+ selectivity remains above 78 % even CO2-rich with 75 CO2/(CO+CO2). Using 13CO2 isotopic labeling, increase methane attributed to both methanation, which limited by maintaining H2/CO outlet ratio below 10 an partial pressure 0.2 bar, respectively....
Paper sludge is a solid waste by-product abundantly produced in the paper industry and contains fine minerals lignocellulosic biomass. In this contribution, ex-situ catalytic fast pyrolysis of with high mineral content ca. 71 wt% reported for first time demonstrated pilot-scale unit (feeding rate 11.3 kg h−1) using granular Na2CO3/γ-Al2O3 catalyst (loading 650 g) to produce high-grade bio-oil at temperature 475 ± 5 °C (pre-screened pyroprobe) upgrading 500 °C. Besides, > 99 could be...
A new, sustainable catalytic route for the synthesis of tetrahydrofuran-2,5-dicarboxylic acid (THFDCA), a compound with potential application in polymer industry, is presented starting from bio-based platform chemical 5-(hydroxymethyl)furfural (HMF). This conversion was successfully achieved via oxidation tetrahydrofuran-2,5-dimethanol (THFDM) over hydrotalcite (HT)-supported gold nanoparticle catalysts (∼2 wt %) water. THFDM readily obtained high yield (>99%) HMF at demonstrated 20 g scale...
A first systematic approach on the base catalyzed depolymerization (BCD) of five technical lignins derived from various botanical origins (herbaceous, hardwood and softwood) covering main three industrial pulping methods (soda, kraft organosolv) is reported. This study provides a its kind in-depth quantification structural characterization two BCD fractions namely lignin oil residue, describing influence process conditions. Depolymerization evaluated in terms conversion, yield, phenolic...
Fast pyrolysis bio-oil (FPBO), a second-generation liquid bioenergy carrier, is currently entering the market. FPBO produced from biomass through fast process and contains large number of constituents, which significant part still unknown. Various analytical methods have been systematically developed validated for in past; however, reliable characterization acetaldehyde, formaldehyde, furfural are lacking. In this work, different analysis with (HS-GC/ECD, HPLC, UV/Vis) without derivatization...
Pyrolysis liquids are very complex and heterogeneous in composition. This makes them hard to comprehensively analyze, which is one of the hurdles that could hinder further advances science technology toward their valorization. Recently, renewed interest grew for quantitative recording two-dimensional 1H–13C heteronuclear single-quantum correlation (HSQC) nuclear magnetic resonance (NMR). HSQC NMR a valuable tool fingerprint quantitatively assess these liquids. However, data analysis spectra...