A5070039432- Catalysis for Biomass Conversion
- Catalysis and Hydrodesulfurization Studies
- Lignin and Wood Chemistry
- Biofuel production and bioconversion
- Thermochemical Biomass Conversion Processes
- Biodiesel Production and Applications
- Catalysts for Methane Reforming
- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- biodegradable polymer synthesis and properties
- Organometallic Complex Synthesis and Catalysis
- Asymmetric Hydrogenation and Catalysis
- Enzyme Catalysis and Immobilization
- Innovative Microfluidic and Catalytic Techniques Innovation
- Microbial Metabolic Engineering and Bioproduction
- Analytical Chemistry and Chromatography
- Supercapacitor Materials and Fabrication
- Food composition and properties
- Zeolite Catalysis and Synthesis
- Crystallization and Solubility Studies
- Coordination Chemistry and Organometallics
- Synthesis and characterization of novel inorganic/organometallic compounds
- Catalysis and Oxidation Reactions
- Carbon dioxide utilization in catalysis
- Polymer composites and self-healing
University of Groningen
2016-2025
Biomass Technology Group (Netherlands)
2008-2025
Ca' Foscari University of Venice
2023
Rijksmuseum
2019
Dialyse Centrum Groningen
2017
Institute of Chemical Engineering
2016
Bandung Institute of Technology
2015
Utrecht University
2013
Materials innovation institute
2013
Avantium (Netherlands)
2013
Fast pyrolysis oils from lignocellulosic biomass are promising second-generation biofuels. Unfortunately, the application range for such is limited because of high acidity (pH∼2.5) and presence oxygen in a variety chemical functionalities, upgrading required most applications. Herein, we report an experimental study on fast oil by catalytic hydrotreatment. A heterogeneous noble-metal catalysts were tested this purpose (Ru/C, Ru/TiO2, Ru/Al2O3, Pt/C, Pd/C), results compared to those obtained...
Abstract Neither the routes through which humin byproducts are formed, nor their molecular structure have yet been unequivocally established. A better understanding of formation and physicochemical properties humins, however, would aid in making biomass conversion processes more efficient. Here, an extensive multiple‐technique‐based study formation, structure, morphology humins is presented as a function sugar feed, presence additives (e.g., 1,2,4‐trihydroxybenzene), applied processing...
A variety of interesting bulk chemicals is accessible by the acid-catalyzed hydrolysis cellulose. An example levulinic acid, a versatile precursor for fuel additives, polymers, and resins. detailed kinetic study on cellulose to acid reported in this paper. The experiments were performed temperature window 150−200 °C, sulfuric concentrations between 0.05 1 M, initial intakes 1.7 14 wt %. highest yield was 60 mol %, obtained at 150 an intake concentration M. full model covering broad range...
Renewable nylon: 5-Hydroxymethylfurfural (HMF), which can be obtained from renewable resources such as D-fructose, was converted into caprolactone with very good overall selectivity in only three steps. The new route involves two hydrogenation steps to obtain 1,6-hexanediol, oxidatively cyclized caprolactone, and then caprolactam.
Levulinic acid (LA), accessible by the catalyzed degradation of biomass, is potentially a very versatile green intermediate chemical for synthesis various (bulk) chemicals applications like fuel additives, polymers, and resin precursors. We report here kinetic study on one key steps in conversion biomass to levulinic acid, i.e. reaction 5-hydroxymethylfurfural (HMF) acid. The experiments were performed temperature window 98–181 °C, concentrations between 0.05–1 M, initial HMF 0.1 1 M....
Abstract BACKGROUND: Biomass is the only renewable feedstock containing carbon, and therefore alternative to fossil‐derived crude oil derivatives. However, main problems concerning application of biomass for biofuels bio‐based chemicals are related transport handling, limited scale conversion process competition with food industry. To overcome such problems, an integral processing route (non‐feed) (residues) transportation fuels proposed. It includes a pretreatment by fast pyrolysis,...
Introduced in the literature 1913 by Bergius, who at time was studying biomass coalification, hydrothermal carbonisation, as many other technologies based on renewables, forgotten during “industrial revolution”.
5-Hydroxymethylfurfural (HMF) was synthesized from glucose in a slug flow capillary microreactor, using combination of AlCl3 and HCl as the homogeneous catalyst aqueous phase methyl isobutyl ketone organic for in-situ HMF extraction. After optimization, an yield 53% obtained at pH 1.5, 160 °C residence time 16 min, it could be further increased to 66.2% by adding 20 wt% NaCl phase. Slug operation microreactor greatly promoted mixing/reaction droplet facilitated extraction slug, enabling...
Pyrolysis oil from lignocellulosic biomass can be fractionated into a lignin and sugar fraction. We here provide review on the structure, properties, depolymerisation strategies applications for pyrolytic in framework of biorefinery.
γ-Valerolactone (GVL) is considered a very interesting green, bio-based platform chemical with high application potential. We here describe research activities on the one-pot catalytic synthesis of GVL from C6-sugar sources (D-glucose, D-fructose, sucrose and cellulose) using an acid catalyst in combination hydrogenation (Ru/C) either molecular hydrogen or formic as donor. When acid, highest yield (52 mol%) was obtained at 180 °C, 16 h reaction time D-fructose source. The major by-products...
The literature on enantioselective liquid–liquid extraction (ELLE) spans more than half a century of research. Nonetheless, comprehensive overview has not appeared during the past few decades. Enantioselective is technology interest for wide range chemists and chemical engineers in fields fine chemicals, pharmaceuticals, agrochemicals, fragrances foods. In this review principles advances resolution through are discussed, starting with an introduction including host–guest chemistry, phase...
The problems that are associated with the use of fossil fuels demand a transition to renewable sources for energy and materials. Biomass is natural treasure chemicals that, date, have been made from resources. Unfortunately, heterogeneiety complexity biomass still precludes exploitation its full potential. New technologies economical valorization under development, but cannot yet compete petrochemical processes. However, rising prices resources will inevitably lead replacement oil refineries...
Abstract Tunable and selective hydrogenation of the platform chemical 5‐hydroxymethylfurfural into valuable C 6 building blocks liquid fuel additives is achieved with copper‐doped porous metal oxides in ethanol. A new catalyst composition improved hydrogenation/hydrogenolysis activity obtained by introducing small amounts ruthenium dopant previously reported Cu 0.59 Mg 2.34 Al 1.00 structure. At a mild reaction temperature (100 °C), 2,5‐furandimethanol excellent selectivity up to >99 %....
Abstract New technology is needed to exploit the potential of lignin as a renewable feedstock for fuels, chemicals and performance products. Fast fluidized bed pyrolysis different lignins at 400°C yields up 21 wt% (d.b.) phenolic fraction containing 10 several phenols. Subsequent catalytic hydrotreating this with 100 bar hydrogen in dodecane 350°C mainly cycloalkanes, cyclohexanols alkanes. For production monomeric phenols, it appears that used ruthenium on carbon too active catalyst....
The use of inorganic salts as catalysts for the reactions d-glucose in aqueous solutions a batch reactor is reported. type salt and effect reaction time were examined detail at fixed (5 mM) concentration (0.1 M) temperature 140 °C. Al(III) Cr(II) gave highest conversion d-glucose. Typical products organic acids like lactic acid, levulinic furanics hydroxymethylfurfural insoluble (humins). chemo-selectivity clear function salt. For Al(III), major water soluble product was Zn(II) HMF formed...