Searched for: subject%3A%22XPS%22
(1 - 11 of 11)
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Long, Jianjun (author), Wei, Xuejiao (author), Dong, Yiting (author), Cheng, Xixi (author), Li, Hao (author), Xu, X. (author), Zhu, Minhao (author)
A systematic experimental investigation concerning the fretting-induced tribo-chemical state and its effect on the fretting wear behavior of titanium alloys under the vacuum atmospheres (4 × 10<sup>–3</sup> Pa and 4 × 10<sup>–1</sup> Pa) in different fretting regimes is reported. An in situ XPS analysis tester was developed to capture the...
journal article 2024
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Ripepi, D. (author)
In the last century, the indiscriminate use of fossil energy to power the industrial revolution and technological progress of humankind, has led to the depletion of limited natural resources and, most importantly, the emission and accumulation of alarming levels of pollutants and greenhouse gases (GHG) in the atmosphere. One of the major...
doctoral thesis 2023
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Ariëns, M.I. (author)
Hydrogen gas is an essential reagent in numerous industrial processes including ammonia synthesis. Ammonia is a key intermediate in the synthesis of nitrogen-based fertilisers, e.g. nitrates and urea. According to recent estimates (2008), approximately half of the world population is fed by nitrogen-based fertilisers of synthetic origin....
doctoral thesis 2023
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Ripepi, D. (author), Izelaar, B. (author), van Noordenne, D.D. (author), Jungbacker, M.P. (author), Kolen, M. (author), Karanth, P. (author), Cruz, Daniel (author), Zeller, Patrick (author), Pérez-Dieste, Virginia (author), Villar-Garcia, Ignacio J. (author), Smith, W.A. (author), Mulder, F.M. (author)
Hydrogen permeable electrodes can be utilized for electrolytic ammonia synthesis from dinitrogen, water, and renewable electricity under ambient conditions, providing a promising route toward sustainable ammonia. The understanding of the interactions of adsorbing N and permeating H at the catalytic interface is a critical step toward the...
journal article 2022
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Yilmaz, A. (author), Traka, K. (author), Pletincx, S. (author), Hauffman, T. (author), Sietsma, J. (author), Gonzalez Garcia, Y. (author)
The role of microstructural defects (dislocation density and grain boundary areas) on the passive film properties formed on cold- and hot-rolled interstitial free (IF) steels is investigated in 0.1 M NaOH solution. Electron backscattered diffraction (EBSD) shows higher microstructural defect density on cold-rolled samples. Potentiodynamic...
journal article 2021
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Zhao, M. (author), Brouwer, J.C. (author), Sloof, W.G. (author), Bottger, A.J. (author)
Pd–Cu alloys have been investigated as promising candidates for hydrogen separation membranes. Surface segregation influences the long-term performance of these membranes since their catalytic effect is mainly controlled by the surface composition. In the present research, surface segregation of Pd-40 at.% Cu alloy in vacuum and various gas...
journal article 2020
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Fockaert, L.I. (author), Pletincx, S. (author), Boelen, B. (author), Hauffman, T. (author), Terryn, H.A. (author), Mol, J.M.C. (author)
The effect of zirconium-based conversion of thermally vaporized zinc, aluminium and magnesium on the chemisorption of dimethylsuccinate was studied using attenuated total reflection – Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) analysis. Two competing chemisorption mechanisms contribute to...
journal article 2020
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Vollmer, I. (author), Mondal, A. (author), Yarulina, I. (author), Abou-Hamad, Edy (author), Kapteijn, F. (author), Gascon, Jorge (author)
The catalytic performance of the bifunctional catalyst Mo/HZSM-5 for methane dehydroaromatization (MDA) depends on the Mo dispersion and on zeolite acidity. Here we separately quantify the effect of dispersion and the effect of acidity on aromatic yields and coke selectivity. Also, the effect of porosity on the same is quantitatively...
journal article 2019
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Cerezo Palacios, J.M. (author)
In this PhD work, a new surface treatment based on the application of Zr-based conversion coatings by immersion in a Cu containing Zr-based conversion solution was investigated as a replacement of the traditional phosphating process for the automotive industry. Nowadays most of the cars are made of a combination of different metals, therefore,...
doctoral thesis 2015
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Akram, M. (author)
Major industrial sectors like automotive, aerospace and others are increasingly using polymer composites in their structural parts. Polyimide sheet and adhesives, are high performance polymers. They are widely used in various engineering applications due to their excellent thermal, mechanical and chemical properties and their resistance to...
doctoral thesis 2015
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Ngo, T.A. (author), Zhu, X. (author)
Find an open file format to replace the current proprietary format
bachelor thesis 2008
Searched for: subject%3A%22XPS%22
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