document

Modelling for Sorbent Based Direct Air Capture Systems

Bender, Jamie (author)

In this thesis, the first part will be a review of the literature that includes as much of the commercially available information on carbon capture and mainly, Direct Air Capture (DAC). What are the difficulties surrounding capturing CO2 from gas mixtures and what are the possible solutions that have been investigated? What type of negative...

master thesis 2023

document

Thermal energy storage in metal-organic framework materials for climate control of Martian buildings

Madabhushi, Pranav (author)

To survive on the surface of a near atmosphere-less Mars, humans must be able to provide thermal energy to buildings to sustain temperature changes from -73°C to 20°C. The goal of the thesis is to create a passively-working thermal battery using materials currently available to humans; it must be the sole heat source to the Martian buildings....

master thesis 2023

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Identifying lipid traces of atherogenic mechanisms in human carotid plaque

Slijkhuis, Nuria (author), Mirzaian, Mina (author), Korteland, Suze Anne (author), Heijs, Bram (author), van Gaalen, Kim (author), Nieuwenhuizen, Ingeborg (author), van der Heiden, Kim (author), Claude, Emmanuelle (author), van Soest, G. (author)

Background and aims: Lipids play an important role in atherosclerotic plaque development and are interesting candidate predictive biomarkers. However, the link between circulating lipids, accumulating lipids in the vessel wall, and plaque destabilization processes in humans remains largely unknown. This study aims to provide new insights into...

journal article 2023

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Thermal Desorption of Interstellar Ices: A Review on the Controlling Parameters and Their Implications from Snowlines to Chemical Complexity

Minissale, Marco (author), Aikawa, Yuri (author), Bergin, Edwin (author), Bertin, Mathieu (author), Brown, Wendy A. (author), Cazaux, S.M. (author), Charnley, Steven B. (author), Coutens, Audrey (author), Cuppen, Herma M. (author)

The evolution of star-forming regions and their thermal balance are strongly influenced by their chemical composition, which, in turn, is determined by the physicochemical processes that govern the transition between the gas phase and the solid state, specifically icy dust grains (e.g., particle adsorption and desorption). Gas-grain and grain...

review 2022

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Dynamic analysis and characterization of a desorption column for a continuous air capture process

Dubhashi, Ved Shrivallabh (author)

The world is currently in the middle of an energy crisis, with a growing demand for energy playing catch up with an increasing population. The problem stems from the fact that we rely heavily on fossil fuels to meet our energy needs, and the combustion of these fuels are the primary source of greenhouse gas emissions. An accelerated rate of...

master thesis 2021

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Characterization and Design of a Stripper for a Continuous Direct Air Capture System

van de Poll, Nelson (author)

Capturing CO2 directly from the air has gained wide attention as it is one of the possible solutions to mitigate the risks of climate change. Zero Emission Fuels (ZEF) is a start-up in Delft that develops a small-scale plant to produce methanol from sunlight and air only. CO2 and H2O are captured from the air by a direct air capture unit that...

master thesis 2021

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Efficient hydrogen storage in defective graphene and its mechanical stability: A combined density functional theory and molecular dynamics simulation study

Sunnardianto, G.K. (author), Bokas, George (author), Hussein, A.H.A. (author), Walters, C.L. (author), Moultos, O. (author), Dey, P. (author)

A combined density functional theory and molecular dynamics approach is employed to study modifications of graphene at atomistic level for better H₂ storage. The study reveals H₂ desorption from hydrogenated defective graphene structure, V₂₂₂, to be exothermic. H₂ adsorption and desorption processes...

journal article 2021

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Impact of different DOM size fractions on the desorption of organic micropollutants from activated carbon

Aschermann, Geert (author), Neubert, Lino (author), Zietzschmann, F.E. (author), Jekel, Martin (author)

Whereas the adsorption of organic micropollutants (OMP) onto activated carbon (AC) is relatively well studied, little is known about potential OMP desorption effects, especially in real waters. In this study, the impact of different fractions of drinking water DOM on OMP desorption from AC was examined. By different pre-treatments of a raw...

journal article 2019

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Recovery of acetate by anion exchange with consecutive CO₂-expanded methanol desorption: A model-based approach

Cabrera Rodriguez, C.I. (author), Cartin Caballero, C.M. (author), Platarou, E. (author), de Weerd, F.A. (author), van der Wielen, L.A.M. (author), Straathof, Adrie J.J. (author)

Production of bio-based acetate is commonly hindered by the high costs of the downstream processing. In this paper, a model is developed to describe a new method that recovers acetate salts using anion exchange resins, and subsequently desorbs and upgrades them using CO₂-expanded alcohol. The model consists of equilibrium...

journal article 2018

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Application of microwave heating to a polyesterification plant

Komorowska-Durka, M. (author)

Utilizing microwave irradiation, a fundamentally different method of the energy transfer, to the chemical process units can potentially be advantageous compared to the conventional heating, inter alia due to the selective nature of interaction of the microwaves with the matter. This doctoral dissertation addresses some of the aspects associated...

doctoral thesis 2015

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Substrate temperature and electron fluence effects on metallic films created by electron beam induced deposition

Rosenberg, S.G. (author), Landheer, K. (author), Hagen, C.W. (author), Fairbrother, D.H. (author)

Using three different precursors [MeCpPtMe3, Pt(PF3)4, and W(CO)6], an ultra-high vacuum surface science approach has been used to identify and rationalize the effects of substrate temperature and electron fluence on the chemical composition and bonding in films created by electron beam induced deposition (EBID). X-ray photoelectron spectroscopy...

journal article 2012

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Temperature dependence of chemical-vapor deposition of pure boron layers from diborane

Mohammadi, V. (author), De Boer, W.B. (author), Nanver, L.K. (author)

Surface reaction mechanisms are investigated to determine the activation energies of pure boron (PureB) layer deposition at temperatures from 350?°C to 850?°C when using chemical-vapor deposition from diborane in a commercial Si/SiGe epitaxial reactor with either hydrogen or nitrogen as carrier gas. Three distinguishable regions are identified...

journal article 2012

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Thermo-physical characterization of Pharmacoatr 603, Pharmacoatr 615 and Mowiolr 4-98

Perfetti, G. (author), Alphazan, T. (author), Wildeboer, W.J. (author), Meesters, G.M.H. (author)

journal article 2012

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Fractal disperse hydrogen sorption kinetics in spark discharge generated Mg/NbOx and Mg/Pd nanocomposites

Anastasopol, A. (author), Pfeiffer, T.V. (author), Schmidt-Ott, A. (author), Mulder, F.M. (author), Eijt, S.W.H. (author)

Isothermal hydrogen desorption of spark discharge generated Mg/NbOx and Mg/Pd metal hydride nanocomposites is consistently described by a kinetic model based on multiple reaction rates, in contrast to the Johnson-Mehl-Avrami-Kolmogorov [M. Avrami, J. Phys. Chem. 9, 177 (1941); W. A. Johnson and R. F. Mehl, Trans. Am. Inst. Min., Metal. Eng. 135,...

journal article 2011

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Moisture absorption analysis of high performance polyimide adhesive

Akram, M. (author), Jansen, K.M.B. (author), Bhowmik, S. (author), Ernst, L.J. (author)

The high temperature resistant polymers and metal composites are used widely in aviation, space, automotive and electronics industry. The high temperature resistant polymers and metals are joined together using high temperature adhesives. Polyimide and epoxy adhesives that can withstand high temperature (200 °C-300 °C) are commonly used for...

conference paper 2011

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Electron induced dissociation of trimethyl (methylcyclopentadienyl) platinum (IV): Total cross section as a function of incident electron energy

Van Dorp, W.F. (author), Wnuk, J.D. (author), Gorham, J.M. (author), Fairbrother, D.H. (author), Madey, T.E. (author), Hagen, C.W. (author)

The total cross section has been measured for the electron induced dissociation of trimethyl (methylcyclopentadienyl) platinum (IV) [MeCpPt(IV)Me3], a Pt precursor often used in focused electron beam induced processing (FEBIP), for incident electron energies ranging between 3–3 keV. Measurements were performed for the precursor in the adsorbed...

journal article 2009

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Lightweight sodium alanate thin films grown by reactive sputtering

Filippi, M. (author), Rector, J.H. (author), Gremaud, R. (author), Van Setten, M.J. (author), Dam, B. (author)

We report the preparation of sodium alanate, a promising hydrogen storage material, in a thin film form using cosputtering in a reactive atmosphere of atomic hydrogen. We study the phase formation and distribution, and the hydrogen desorption, with a combination of optical and infrared transmission spectroscopy. We show that the hydrogen...

journal article 2009

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Quasifree Mg–H thin films

Baldi, A. (author), Palmisano, V. (author), Gonzalez-Silveira, M. (author), Pivak, Y. (author), Slaman, M. (author), Schreuders, H. (author), Dam, B. (author), Griessen, R. (author)

The thermodynamics of hydrogen absorption in Pd-capped Mg films are strongly dependent on the magnesium thickness. In the present work, we suppress such dependency by inserting a thin Ti layer between Mg and Pd. By means of optical measurements, we show that the surface energy contribution to the destabilization of MgH2 is negligible. The...

journal article 2009

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Improved manometric setup for the accurate determination of supercritical carbon dioxide sorption

Van Hemert, P. (author), Bruining, H. (author), Rudolph, E.S.J. (author), Wolf, K.H.A.A. (author), Maas, J.G. (author)

An improved version of the manometric apparatus and its procedures for measuring excess sorption of supercritical carbon dioxide are presented in detail with a comprehensive error analysis. An improved manometric apparatus is necessary for accurate excess sorption measurements with supercritical carbon dioxide due to the difficulties associated...

journal article 2009

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Defects and thermal stability of nanothin Cu films on Mo and Ta

Venugopal, V. (author)

In situ thermal helium desorption spectrometry (THDS) has been used to characterize defects and thermal stability of nanothin Cu films (0.5-30 nm) deposited on Mo and Ta by electron beam evaporation in ultrahigh vacuum. The substrates used were Mo(110), Mo(100), polycrystalline Mo, Ta(110) and Ta(100). Cu/Mo and Cu/Ta are heteroepitaxial systems...

doctoral thesis 2005