A5022902640- Biofuel production and bioconversion
- Catalysis for Biomass Conversion
- Microbial Metabolic Engineering and Bioproduction
- Bioeconomy and Sustainability Development
- GABA and Rice Research
- Environmental Impact and Sustainability
- RNA Interference and Gene Delivery
- Lignin and Wood Chemistry
- Biopolymer Synthesis and Applications
- Enzyme Catalysis and Immobilization
- Protein Hydrolysis and Bioactive Peptides
- Asymmetric Hydrogenation and Catalysis
- Asymmetric Synthesis and Catalysis
- Energy and Environment Impacts
- Sustainable Supply Chain Management
- Carbohydrate Chemistry and Synthesis
- Forest Biomass Utilization and Management
- Probiotics and Fermented Foods
- Innovative Microfluidic and Catalytic Techniques Innovation
- Amino Acid Enzymes and Metabolism
- Carbon dioxide utilization in catalysis
- Thermochemical Biomass Conversion Processes
- Anaerobic Digestion and Biogas Production
- Chemical Synthesis and Analysis
- Polyamine Metabolism and Applications
Biomass Technology Group (Netherlands)
2016-2022
Shell (Netherlands)
2014-2017
Amsterdam University of Applied Sciences
2017
Shell (United States)
2016
Wageningen University & Research
2009-2012
Biobase (Germany)
2011
Montserrat Volcano Observatory
2009
University of Twente
2006
Cost-effective fractionation (pretreatment) of lignocellulosic biomass is necessary to enable its large-scale use as a source liquid fuels, bio-based materials and bio-derived chemicals.
Glutamic acid is an important constituent of waste streams from biofuels production. It interesting starting material for the synthesis nitrogen containing bulk chemicals, thereby decreasing dependency on fossil fuels. On pathway glutamic to a range molecules, decarboxylation γ-aminobutyric (GABA) reaction. This reaction, catalyzed by enzyme α-decarboxylase (GAD) was studied gram scale. In this study, GAD immobilized Eupergit and in calcium alginate its operational stability determined...
Hydrotalcites (HTCs) exhibit multiple adjustable parameters to tune catalytic activity, including interlayer anion composition, metal hydroxide layer and catalyst preparation methods. Here, we report the influence of several these on β-O-4 bond scission in a lignin model dimer, 2-phenoxy-1-phenethanol (PE), yield phenol acetophenone. We find that presence both basic NO3– anions increases activity by 2–3-fold. In contrast, other or transition metals do not enhance comparison blank HTC. The is...
Recyclable iridium catalysts have been developed rationally for the direct self-condensation of ethanol and butanol in water air.
N-Methylpyrrolidone (NMP) is an industrial solvent that currently based on fossil resources. In order to prepare it in a biobased way, the possibility synthesize NMP from γ-aminobutyric acid (GABA) was investigated, since GABA can be obtained glutamic acid, amino present many plant proteins. Cyclization of 2-pyrrolidone and subsequent methylation achieved one-pot procedure, using methanol as methylating agent halogen salt (i.e. ammonium bromide) catalyst. A selectivity above 90% achieved,...
Glutamate decarboxylase (GadB) from Escherichia coli is a hexameric, pyridoxal 5'-phosphate-dependent enzyme catalyzing CO(2) release the alpha-carboxyl group of L-glutamate to yield gamma-aminobutyrate. GadB exhibits an acidic pH optimum and undergoes spectroscopically detectable strongly cooperative pH-dependent conformational change involving at least six protons. Crystallographic studies showed that mildly alkaline inactive because all active sites are locked by C termini 340 nm...
Abstract Succinonitrile is the precursor of 1,4‐diaminobutane, which used for industrial production polyamides. This paper describes synthesis biobased succinonitrile from glutamic acid and glutamine, amino acids that are abundantly present in many plant proteins. Synthesis intermediate 3‐cyanopropanoic amide was achieved 5‐methyl ester an 86 mol % yield glutamine a 56 yield. 3‐Cyanopropanoic can be converted into succinonitrile, with selectivity close to 100 62 conversion, by making use...
Glutamic acid is an important constituent of waste streams from biofuels production. It interesting starting material for the synthesis biobased chemicals, thereby decreasing dependency on fossil fuels. The objective this paper was to compare environmental impact four chemicals glutamic with their petrochemical equivalents, that is, N-methylpyrrolidone (NMP), N-vinylpyrrolidone (NVP), acrylonitrile (ACN), and succinonitrile (SCN). A consequential life cycle assessment performed, wherein...
Abstract In this review, possible process steps for the production of bio‐based industrial chemicals from glutamic acid are described, including a techno‐economic assessment all processes. The products under investigation were those that shown to be synthesized on lab‐scale, namely N‐methylpyrrolidone (NMP), N‐vinylpyrrolidone (NVP), succinonitrile, and acrylonitrile. goal was not only assess economic feasibility at stage, but mainly discover where is most potential improvements in these...
Co-processing fast pyrolysis bio-oil (FPBO) in conventional oil refineries and, specifically, fluid catalytic cracker (FCC) units is one of the most cost-effective and least capex-intensive routes to produce advanced biofuels. It provides a direct way replace fossil feedstocks, meaning that less crude needed meet demand for transportation fuels more reserves can stay untouched. Tracking biogenic carbon through refinery important legislative aspects co-processing therefore, also process...
Under the auspices of EU's new Circular Economy Action Plan and Bioeconomy Strategy, usage sustainably renewable biomass for bio-based chemicals is a part-solution addressing multidimensional challenges (inter alia) growth employment, food energy security, climate change biodiversity. Unfortunately, lack formal system European data classification collection presents major obstacle to measuring, monitoring ex-ante modelling sector, which clouds ability make science-based policy legislative...