A5063392973- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Catalysis and Hydrodesulfurization Studies
- Zeolite Catalysis and Synthesis
- Innovative Microfluidic and Catalytic Techniques Innovation
- Catalysts for Methane Reforming
- Mesoporous Materials and Catalysis
- Thermochemical Biomass Conversion Processes
- Electrocatalysts for Energy Conversion
- Catalysis for Biomass Conversion
- Thermal and Kinetic Analysis
- Fluid Dynamics and Mixing
- Nanomaterials for catalytic reactions
- Process Optimization and Integration
- Membrane Separation and Gas Transport
- Carbon Dioxide Capture Technologies
- Industrial Gas Emission Control
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Phase Equilibria and Thermodynamics
- Heat and Mass Transfer in Porous Media
- Petroleum Processing and Analysis
- Microfluidic and Capillary Electrophoresis Applications
- Layered Double Hydroxides Synthesis and Applications
Delft University of Technology
2012-2023
Cardiff University
2006-2020
Faculty (United Kingdom)
2019
University of Groningen
2011
Institute of Catalysis and Petrochemistry
2009-2011
Holst Centre (Netherlands)
2011
University of Twente
2011
Shell (United States)
2009
Leiden University
2002-2008
Institute for Atomic and Molecular Physics
2008
A 2 orders of magnitude gas transport improvement in a medium pore ZSM-5 zeolite has been achieved upon introduction intracrystalline mesoporosity gradient-free crystals by desilication post-treatment alkaline medium.
Recent studies have shown that desilication by treatment in alkaline medium is, with respect to other methods, a very suitable and reproducible methodology obtain mesoporous ZSM-5 zeolites preserved structural integrity. This feature article analyzes mechanistic kinetic aspects associated this post-synthesis treatment. Framework aluminium controls the process of framework silicon extraction makes selective towards intracrystalline mesopore formation. An optimal molar Si/Al ratio range 25–50...
Abstract During the last few decades, concerns have grown on negative effects that diesel particulate matter has health. Because of this, emissions were subjected to restrictions and various emission-reduction technologies developed. It is ironic some these led reductions in legislated total mass while neglecting number particles. Focusing not necessarily correct, because it might well be but particles characteristics them (size, composition) a higher impact To eliminate threat matter,...
Monolithic catalysts can be attractive replacements for conventional in randomly packed beds or slurry reactors. The procedures preparing catalysts, however, cannot simply applied to monolithic catalysts. Different are discussed on how put a coat layer of catalyst support material like alumina, silica, carbon monolith body by either filling the pores that putting support. methods apply an active phase as well. Finally, convert ready-made into presented.
The role of the concentration and nature aluminium in creation hierarchical porosity both commercial synthesized MFI zeolites have been investigated through controlled mesoporosity development by desilication alkaline medium. Framework controls process framework silicon extraction makes selective towards intracrystalline mesopore formation. An optimal molar Si/Al ratio range 25-50 has identified; this leads to an centred around 10 nm surface areas up 235 m(2) g(-1) while preserving intrinsic...
Propene oxide, which is one of the major commodity chemicals used in chemical industry, desperately requires a new process for its production, because disadvantages that are encountered with currently available processes. This paper discusses existing processes production propene oxidethe chlorohydrin and hydroperoxide processesand their advantages disadvantages. Furthermore, catalysts under development oxide discussed, as well challenges still limiting applications some those prospects. The...
Tetrahedrally coordinated aluminum in MFI zeolite frameworks controls the mechanism of intracrystalline mesopore formation by desilication alkaline medium. The optimal molar Si/Al ratio range 25−50 enables a controlled mesoporosity development with preserved crystalline and acidic properties, potentially leading to more efficient utilization improved diffusion characteristics.
Hollow zeolite architectures on different length scales have been obtained upon controlled desilication of Al-zoned ZSM-5 zeolites in alkaline medium. The hollow crystals possess a functional Al-rich exterior and tunable internal porosity accessibility.
Abstract The use of structured catalysts in the chemical industry has been considered for years. Conventional fixed-bed reactors have some obvious disadvantages such as maldistributions various kinds (including a nonuniform access reactants to catalytic surface), high pressure drop bed, etc. Structured are promising far elimination these setbacks is concerned. Two basic can be distinguished: Structural packings covered with catalytically active material, similar design those used...
A critical literature analysis was conducted on the viable usage of CO2 in framework attempts to reduce emissions into atmosphere from various processes or rate increase concentration atmosphere. Applications based physical properties are summarized first. Major examples applications supercritical extraction, enhanced oil recovery, and use as inert gas fire extinguishing safety application industry. The possibilities chemical systematically discussed. can react with several hydrocarbons...
Abstract In a capillary, the two‐phase pressure drop in Taylor slug flow was measured. A carefully designed inlet section for capillary allowed independent variation of gas bubble and liquid length. Gas superficial velocities were varied from 0.04 m/s to 0.3 m/s. If length smaller than 10 times diameter, length‐averaged friction factor increased drastically single phase value (f = 16/Re) due differences curvature at front back bubble. The use different liquids Re Ca. elongated bubbles...
The chemical industry processes in the oil refinery steam cracking production of lower alkenes synthesis gas bulk chemicals derived from inorganic process technology homogeneous catalysis heterogeneous fine chemistry polymerization biotechnology development strategy and scale-up.