Searched for: subject%3A%22Catalysis%22
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Volders, J. (author), Elen, K. (author), Raes, A. (author), Ninakanti, R. (author), Kelchtermans, A.S. (author), Sastre, F. (author), Hardy, A. (author), Cool, P. (author), Verbruggen, S.W. (author), Buskens, P. (author), van Bael, M.K. (author)
This study reports the low temperature and low pressure conversion (up to 160 ◦C, p = 3.5 bar) of CO2 and H2 to CO using plasmonic Au/TiO2 nanocatalysts and mildly concentrated artificial sunlight as the sole energy source (up to 13.9 kW·m−2 = 13.9 suns). To distinguish between photothermal and non-thermal contributors, we investigated the...
article 2022
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van der Zwaan, B. (author), Detz, R. (author), Meulendijks, N. (author), Buskens, P. (author)
Natural gas is a potent greenhouse gas but remains an attractive energy resource for a good number of reasons. Because complementing the use of natural gas with carbon dioxide capture and storage yields several drawbacks, producing synthetic natural gas instead could be an interesting alternative. Methanation is an established and well-known...
article 2022
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Molina, P.M. (author), Meulendijks, N. (author), Xu, M. (author), Verheijen, M.A. (author), den Hartog, T. (author), Buskens, P. (author), Sastre, F. (author)
Sunlight-powered reduction of CO2to fuels and chemicals is apromising strategy to close the carbon loop and facilitate theenergy transition. In this research, we demonstrate that Aunanoparticles supported on TiO2are an efficient plasmoniccatalyst for the sunlight-powered reverse water-gas shift (rWGS)reaction. A maximum CO production rate of429...
article 2021
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van der Zwaan, B. (author), Detz, R. (author), Meulendijks, N. (author), Buskens, P. (author)
Natural gas is a potent greenhouse gas but remains an attractive energy resource for a good number of reasons. Because complementing the use of natural gas with carbon dioxide capture and storage yields several drawbacks, producing synthetic natural gas instead could be an interesting alternative. Methanation is an established and well-known...
article 2021
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Vollmer, I. (author), Jenks, M.J.F. (author), Roelands, M.C.P. (author), White, R.J. (author), van Harmelen, T. (author), de Wild, P. (author), van der Laan, G.P. (author), Meirer, F. (author), Keurentjes, J.T.F. (author), Weckhuysen, B.M. (author)
Increasing the stream of recycled plastic necessitates an approach beyond the traditional recycling via melting and re-extrusion. Various chemical recycling processes have great potential to enhance recycling rates. In this Review, a summary of the various chemical recycling routes and assessment via life-cycle analysis is complemented by an...
article 2020
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Bezemer, K. (author), McLennan, L. (author), van Duin, L. (author), Kuijpers, C.J. (author), Koeberg, M. (author), van den Elshout, J.J.M.H. (author), van der Heijden, A.E.D.M. (author), Busby, T. (author), Yevdokimov, A. (author), Schoenmakers, P. (author), Smith, J. (author), Oxley, J. (author), van Asten, A. (author)
Erythritol tetranitrate (ETN) was prepared independently by two research groups from the USA and the Netherlands. The partially nitrated impurities present in ETN were studied using liquid chromatography-mass spectrometry to address the ultimate challenge in forensic explosives investigations, i.e., providing chemical and tactical information on...
article 2020
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Grote, R. (author), Habets, R. (author), Rohlfs, J. (author), Sastre, F. (author), Meulendijks, N. (author), Xu, M. (author), Verheijen, M.A. (author), Elen, K. (author), Hardy, A. (author), van Bael, M.K. (author), den Hartog, T. (author), Buskens, P. (author)
article 2020
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Yan, N. (author), Detz, R.J. (author), Govindarajan, N. (author), Koelewijn, J.M. (author), Hua, B. (author), Li, P. (author), Meijer, E.J. (author), Reek, J.N.H. (author)
Water oxidation catalysis plays a pivotal role in the context of the worldwide interest for sustainable energy. Finding cost-effective and robust catalysts to replace the state-of-the-art noble metal materials is hence urgent. In this work, we develop a molecular iridium complex that selectively and uniformly anchors on the surface of manganese...
article 2019
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Filiciotto, L. (author), Marquez-Medina, M.D. (author), Pineda, A. (author), Balu, A.M. (author), Romero, A.A. (author), Angelici, C. (author), de Jong, E. (author), van der Waal, J.C. (author), Luque, R. (author)
The use of a biorefinery co-product, such as humins, in combination with an iron precursor in a solvent-free method yields a catalytic material with potential use in selective oxidative cleavage reactions. In particular, this catalyst was found active in the hydrogen-peroxide assisted oxidation of a naturally extracted molecule, isoeugenol, to...
article 2019
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Ghosh, M.K. (author), Howard, M.S. (author), Dussan, K. (author), Dooley, S. (author)
A detailed systematic theoretical study of the mechanism of the homogeneous Brønsted-acid catalysis of d-glucose in aqueous solution phase ("acid hydrolysis") is reported. G4MP2 with the SMD solvation model at B3LYP/6-31G(2df,p) are employed to compute the free energies of the molecular and ionic species pertaining to the isomerization,...
article 2019
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Koivisto, A.J. (author), Kling, K.I. (author), Fonseca, A.S. (author), Brostrøm Bluhme, A. (author), Moreman, M. (author), Yu, M. (author), Costa, A.L. (author), Giovanni, B. (author), Ortelli, S. (author), Fransman, W. (author), Vogel, U. (author), Jensen, K.A. (author)
Nanoscale TiO2 (nTiO2) is manufactured in high volumes and is of potential concern in occupational health. Here, we measured workers exposure levels while ceramic honeycombs were dip coated with liquid photoactive nanoparticle suspension and dried with an air blade. The measured nTiO2 concentration levels were used to assess process specific...
article 2018
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Dhingra, S. (author), Khakharia, P. (author), Rieder, A. (author), Cousins, A. (author), Reynolds, A. (author), Knudsen, J. (author), Andersen, J. (author), Irons, R. (author), Mertens, J. (author), Zahra, M.A. (author), van Os, P. (author), Goetheer, E.L.V. (author)
Oxidative degradation is a serious concern for upscaling of amine-based carbon capture technology. Different kinetic models have been proposed based on laboratory experiments, however the kinetic parameters included are limited to those relevant for a lab-scale system and not a capture plant. Besides, most of the models fail to recognize the...
article 2017
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Wittkampf, S.A. (author)
After several breakthroughs in the field of additive manufacturing, ECN has managed to 3D-print sorbents and catalyst support structures. This results in far more design freedom for reactors, catalysts and sorbents compared to the state-of-the-art. This knowledge enables the development of significantly more efficient conversion processes in the...
other 2016
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Goosen, C. (author), van der Maarel, M.J.E.C. (author), Dijkhuizen, L. (author), TNO Kwaliteit van Leven (author)
The purified exo-inulinase enzyme of Aspergillus niger N402 (AngInuE; heterologously expressed in Escherichia coli) displayed a sucrose:inulin (S/I) hydrolysis ratio of 2.3, characteristic for a typical exo-inulinase. The enzyme also had significant transfructosylating activity with increasing sucrose concentrations, producing various...
article 2008
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van Veggel, A.A. (author), van den Ende, D.A. (author), Bogenstahl, J. (author), Rowan, S. (author), Cunningham, W. (author), Gubbels, G.H.M. (author), Nijmeijer, H. (author), TNO Industrie en Techniek (author)
For bonding silicon carbide optics, which require extreme stability, hydroxide catalysis bonding is considered [Rowan, S., Hough, J. and Elliffe, E., Silicon carbide bonding. UK Patent 040 7953.9, 2004. Please contact Mr. D. Whiteford for further information: D.Whiteford@admin.gla.ac.uk]. This technique is already used for bonding silicate-based...
article 2008
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Bansal, S. (author), Gaspari, M. (author), Raj, H.G. (author), Kumar, A. (author), Cuda, G. (author), Verheij, E. (author), Tyagi, Y.K. (author), Ponnan, P. (author), Rastogi, R.C. (author), Parmar, V.S. (author), TNO Kwaliteit van Leven (author)
Our earlier investigations identified acetoxy drug: protein transacetylase (TAase), a unique enzyme in the endoplasmic reticulum (ER) catalyzing the transfer of acetyl groups from polyphenolic acetates (PA) to certain functional proteins. Recently we have established the identity of TAase with ER protein calreticulin (CR) and subsequently...
article 2008
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Usta, M. (author), Wortelboer, H.M. (author), Vervoort, J. (author), Boersma, M.G. (author), Rietjens, I.M.C.M. (author), van Bladeren, P.J. (author), Cnubben, N.H.P. (author), TNO Kwaliteit van Leven (author)
Curcumin, an α,β-unsaturated carbonyl compound, reacts with glutathione, leading to the formation of two monoglutathionyl curcumin conjugates. In the present study, the structures of both glutathione conjugates of curcumin were identified by LC-MS and one- and two-dimensional 1H NMR analysis, and their formation in incubations with human...
article 2007
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TNO Kwaliteit van Leven (author), van der Horst, M.A. (author), Arents, J.C. (author), Kort, R. (author), Hellingwerf, K.J. (author)
The bacterial photoreceptor protein photoactive yellow protein (PYP) covalently binds the chromophore 4-hydroxy coumaric acid, tuning (spectral) characteristics of this cofactor. Here, we study this binding and tuning using a combination of pointmutations and chromophore analogs. In all photosensor proteins studied to date the covalent linkage...
article 2007
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van Hijum, S.A.F.T. (author), Kralj, S. (author), Ozimek, L.K. (author), Dijkhuizen, L. (author), van Geel-Schutten, G.H. (author), TNO Kwaliteit van Leven (author)
Lactic acid bacteria (LAB) employ sucrase-type enzymes to convert sucrose into homopolysaccharides consisting of either glucosyl units (glucans) or fructosyl units (fructans). The enzymes involved are labeled glucansucrases (GS) and fructansucrases (FS), respectively. The available molecular, biochemical, and structural information on sucrase...
article 2006
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Weenink, X.O. (author), Punt, P.J. (author), van den Hondel, C.A.M.J.J. (author), Ram, A.F.J. (author), TNO Kwaliteit van Leven (author)
Although filamentous fungi have a unique property of secreting a large amount of homologous extracellular proteins, the use of filamentous fungi as hosts for the production of heterologous proteins is limited because of the low production levels that are generally reached. Here, we report a general screening method for the isolation of mutants...
article 2006
Searched for: subject%3A%22Catalysis%22
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