A5035955140- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Catalysts for Methane Reforming
- Catalysis and Hydrodesulfurization Studies
- Zeolite Catalysis and Synthesis
- Ammonia Synthesis and Nitrogen Reduction
- Nanomaterials for catalytic reactions
- Plasma Applications and Diagnostics
- Thermochemical Biomass Conversion Processes
- Carbon Nanotubes in Composites
- Electrocatalysts for Energy Conversion
- Graphene research and applications
- Mesoporous Materials and Catalysis
- Catalysis for Biomass Conversion
- Advanced Photocatalysis Techniques
- Hydrogen Storage and Materials
- Diamond and Carbon-based Materials Research
- Supercapacitor Materials and Fabrication
- Fiber-reinforced polymer composites
- Subcritical and Supercritical Water Processes
- Industrial Gas Emission Control
- Gas Sensing Nanomaterials and Sensors
- Surface Modification and Superhydrophobicity
- Plasma Diagnostics and Applications
- Innovative Microfluidic and Catalytic Techniques Innovation
University of Twente
2016-2025
Institute of Nanotechnology
2014-2021
Chan Heart Rhythm Institute
2021
Aalto University
2013-2020
Catalytic Materials (United States)
2007-2019
Ghent University
2019
Wuhan University of Technology
2019
Universidad de Sevilla
2019
Lawrence Berkeley National Laboratory
2010
Technical University of Denmark
2008
Abstract Plasma catalysis is gaining increasing interest for various gas conversion applications, such as CO 2 into value-added chemicals and fuels, CH 4 activation hydrogen, higher hydrocarbons or oxygenates, NH 3 synthesis. Other applications are already more established, air pollution control, e.g. volatile organic compound remediation, particulate matter NO x removal. In addition, plasma also very promising catalyst synthesis treatment. clearly has benefits over ‘conventional’ catalysis,...
We experimentally investigate drop impact dynamics onto different superhydrophobic surfaces, consisting of regular polymeric micropatterns and rough carbon nanofibers, with similar static contact angles. The main control parameters are the Weber number roughness surface. At small We, i.e., velocity, evolutions for both types substrates, exhibiting Fakir state, complete bouncing, partial rebouncing, trapping an air bubble, jetting, sticky vibrating water balls. large splashing impacts emerge...
Plasma-driven catalytic ammonia synthesis from renewable electricity has recently gained traction as an alternative to the Haber–Bosch process for decentralized applications. We summarize state-of-the-art in literature and provide avenues improvement.
Plasma-based NO<sub>X</sub> synthesis can be combined with renewable electricity for decarbonized fertilizer production. Renewed research interest makes it increasingly competitive the conventional process.
Evaporation of water droplets on a superhydrophobic substrate, which the contact line is pinned, investigated. While previous studies focused mainly with angles smaller than 90°, here we analyze almost full range possible (10°-150°). The greater and pinned lines can be achieved by use carbon nanofiber substrates. time evolutions angle droplet mass are examined. experimental data in good quantitative agreement model presented Popov [Phys. Rev. E 71, 036313 (2005)], demonstrating that...
Valorisation of humin by-products: the chemical structure and evolution as well reactivity in dry reforming.
This review is focused on the surface sites of monoclinic zirconia, especially hydroxyls and their manipulation, interaction CO with zirconia to form linearly adsorbed formates.
Abstract Aberration‐corrected transmission electron microscopy and high‐angle annular dark field imaging was used to investigate the surface structures internal defects of CeO 2 nanoparticles (octahedra, rods, cubes). Further, their catalytic reactivity in water–gas shift (WGS) reaction exposed sites by using FTIR spectroscopy were tested. Rods octahedra expose stable (111) surfaces whereas cubes have primarily (100) facets. also had voids steps. The planes are consistent with observed...
In the application of heterogeneous catalysts in liquid phase reactions, rate reaction as well selectivity is often negatively influenced by mass transfer limitations stagnant pores catalyst support. Internal can be reduced maximizing porosity and lowering tortuosity Particles layers consisting carbon nanofibers are promising supports because combination large pore volume (0.5−2 cm3/g) extremely open morphology, on one hand, significant high surface area (100−200 m2/g), other hand. This...
Ceria nanorods were investigated using in situ Raman and FTIR spectroscopies for CO adsorption subsequent reaction with water at 200 350 °C. The involvement of defects ceria during H2O is dependent on the temperature. At °C, most carbonate formate species formed do not involve formation defects, while °C all carbonates formates can be correlated to (15% by 85% mono/bidentate carbonates). Finally, very stable polydentate are that induce cannot regenerated water.
Evaporation-driven particle self-assembly can be used to generate three-dimensional microstructures. We present a unique method create colloidal microstructures in which we control the amount of particles and their packing fraction. To this end, evaporate dispersion droplets on special type superhydrophobic microstructured surface, droplet remains Cassie–Baxter state during entire evaporative process. The remainders consist massive spherical cluster microspheres, with diameters ranging from...
Plasma-enhanced catalytic ammonia synthesis has been proposed as an alternative pathway for green nitrogen fixation in the case of medium- and small-scale operation. Recently, Mehta et al. [ Nat. Catal. 2018, 1 (4), 269−275] postulated that plasma-induced vibrational excitations N2 decrease dissociation barrier, without influencing subsequent hydrogenation reactions desorption at atmospheric conditions. In this paper, postulation is substantiated with experimental data unpromoted promoted,...
Ammonia may be one of the energy carriers in hydrogen economy. Although research has mostly focused on electrochemical ammonia synthesis, this however remains a scientific challenge. In current article, we discuss feasibility single-pass thermochemical synthesis as an alternative to high-temperature, high-pressure Haber-Bosch loop. We provide overview recently developed low temperature catalysts, well solid sorbents. show that temperature, pressure process can produce at lower cost than loop...
Synthetic ammonia, manufactured by the Haber–Bosch process and its variants, is key to securing global food security. Hydrogen most important feedstock for all synthetic ammonia processes. Renewable production relies on hydrogen generated water electrolysis using electricity from hydropower. This was used commercially as early 1921. In present work, we discuss how renewable subsequently emerged in those countries endowed with abundant hydropower, particular regions limited or no oil, gas,...
Plasma-based ammonia synthesis is studied as an option for electrifying the chemical industry. However, energy efficiency of plasma-based severely limited by decomposition in plasma phase. We show that use zeolite 4A adsorbent situ removal from phase suppresses product decomposition, thereby increasing yield. It found yield plasma-chemical with improved a factor 2 compared to steady-state synthesis. Plasma-induced surface heating limits effective adsorption capacity zeolite, decreasing...
The global energy transition necessitates the development of technologies enabling cost-effective and scalable conversion renewable energies into storable transportable forms. Green ammonia, with its high hydrogen storage capacity, emerges as a promising carbon-free carrier. This article reviews recent progress in industrially relevant catalysts for ammonia cracking, which is pivotal step utilizing material. Catalysts based on Ru, Ni, Fe, Co, Fe-Co are evaluated, Co-based showing exceptional...