Searched for: subject:"Catalysis"
(1 - 20 of 81)

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de Dios García, Ignacio (author), Stankiewicz, A.I. (author), Nigar, H. (author)
Energy-efficient CH<sub>4</sub>-CO<sub>2</sub> valorization to fuels and chemicals presents an urgent need considering the great variety of methane sources and the removal of greenhouse gases. In the present work, the microwave-assisted dry reforming of methane, DRM, has been carried out in a custom-designed rectangular mono-mode microwave...
journal article 2021
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Franz, R.P.M. (author), Tichelaar, F.D. (author), Uslamin, E. (author), Pidko, E.A. (author)
Catalyst passivation refers to the formation of a protective oxide layer on the active metal particles that prevents their oxidation when exposed to air. Common passivation procedures, when applied to Ni/ Al<sub>2</sub>O<sub>3</sub> catalysts, typically result in a significant decrease of the overall Ni surface area and, accordingly, the...
journal article 2021
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Yan, P. (author), Stankiewicz, A.I. (author), Eghbal Sarabi, F. (author), Nigar, H. (author)
Microwave irradiation can intensify catalytic chemistry by selective and controlled microwave-catalytic packed-bed interaction. However, turning it to reality from laboratory to practical applications is hindered by challenges in the reactor design and scale-up. Here, we present a novel, rectangular traveling-wave microwave reactor (RTMR) and...
journal article 2021
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Viswanathan, Narasimhan (author)
Fossil fuels have been the primary source of rising energy requirements for humankind. However, the extensive use of fossil fuels has led to an increase in Earth's surface temperature. To tackle rising energy demands and the increase in Earth's surface temperature, various organizations like Inter-governmental Panel for Climate Change and the...
master thesis 2020
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Sharma, S. (author)
Electrochemical Promotion of Catalysis (EPOC) is a method for enhancing a catalytic reaction by modifying the surface properties of the catalyst through the application of a small amount of current or interfacial potential. It can also be used to enhance the selectivity of heterogenous catalytic reactions. It was first discovered by M. Stoukides...
master thesis 2020
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Papadogianakis, Georgios (author), Sheldon, R.A. (author), Murzin, Dmitry Yu (author), Wu, Yulong (author)
contribution to periodical 2020
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Zhang, Jie (author), Li, Fukun (author), Wang, Ruiqi (author), Tan, Xuemei (author), Hagedoorn, P.L. (author)
Laccase is a versatile multicopper oxidase that holds great promise for many biotechnological applications. For such applications, it is essential to explore good biocatalytic systems for high activity and recyclability. The feasibility of membrane enclosed enzymatic catalysis (MEEC) for enzyme recycling with laccase was evaluated. The...
journal article 2020
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Brevé, T.G. (author), Filius, M. (author), Araman, Can (author), van der Helm, M.P. (author), Hagedoorn, P.L. (author), Joo, C. (author), van Kasteren, Sander I. (author), Eelkema, R. (author)
Supramolecular encapsulation is known to alter chemical properties of guest molecules. We have applied this strategy of molecular encapsulation to temporally control the catalytic activity of a stable copper(I)–carbene catalyst. Encapsulation of the copper(I)–carbene catalyst by the supramolecular host cucurbit[7]uril (CB[7]) resulted in the...
journal article 2020
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Chatzipanagiotou, Konstantina Roxani (author), Jourdin, L. (author), Buisman, Cees J.N. (author), Strik, David P.B.T.B. (author), Bitter, Johannes H. (author)
Carbon dioxide (CO<sub>2</sub>) can be converted to valuable products using different catalysts, including metal or biological catalysts (e. g. microorganisms). Some products formed by metal electrocatalysts can be further utilized by microorganisms, and therefore catalytic cooperation can be envisioned. To prevent cumbersome separations, it...
journal article 2020
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van Putten, R. (author), Wissink, Tim (author), Swinkels, Tijn (author), Pidko, E.A. (author)
Transitioning from fossil fuels to sustainable and green energy sources in mobile applications is a difficult challenge and demands sustained and highly multidisciplinary efforts in R&amp;D. Liquid organic hydrogen carriers (LOHC) offer several advantages over more conventional energy storage solutions, but have not been yet demonstrated at...
journal article 2019
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Westsson, E.E. (author)
The increasing energy demand of the world population in combination with tangible climate change effects stemming from rising carbon dioxide emissions is currently characterizing a large portion of the political and societal debate. Despite huge technological advancement in the field of renewable energy resulting in energy prices lower than that...
doctoral thesis 2019
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Vollmer, I. (author)
In view of rising global demand for aromatics as starting chemical for many commodity goods as well as pharmaceuticals, new routes for production are explored. Since the advent of fracking, natural gas has become increasingly cheap and direct utilization for aromatics production has gained attractiveness. Methane dehydroaromatization represents...
doctoral thesis 2019
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Sengar, A. (author), Kuipers, J. A.M. (author), van Santen, R. A. (author), Padding, J.T. (author)
Particle based approaches are one of the recent modeling techniques to overcome the computational limitation in multiscale modeling of complex processes, for example a heterogeneous catalytic reactor. We propose an efficient model for a chemical reactor where hydrodynamics of the solvent is determined by Stochastic Rotation Dynamics and a...
journal article 2019
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Zhang, Tianyu (author), Ma, Yunjian (author), Tan, Chin Ping (author), Hollmann, F. (author), Wang, Jianrong (author), Yang, Bo (author), Wang, Yonghua (author)
Poor H <sub>2</sub> O <sub>2</sub> -resistance by enzymes is a key bottleneck in the epoxidation process of oil by enzymatic methods. In this study, the stability of three lipases, from Aspergillus oryzae lipase (AOL), Aspergillus fumigatus lipase B (AflB), and marine Janibacter (MAJ1), in the presence of H <sub>2</sub> O <sub>2</sub> was...
journal article 2019
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Kuliaev, P. (author), Pidko, E.A. (author)
Optimization and execution of chemical reactions are to a large extend based on experience and chemical intuition of a chemist. The chemical intuition is rooted in the phenomenological Le Chatelier's principle that teaches us how to shift equilibrium by manipulating the reaction conditions. To access the underlying thermodynamic parameters...
journal article 2019
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Gotor-Fernández, Vicente (author), Paul, C.E. (author)
Deep eutectic solvents (DES) are a class of neoteric solvents used in multiple applications amongst which biocatalytic processes. Due to its simple preparation, low cost and inherent biodegradable properties, its use as a non-volatile biocompatible co-solvent with both whole cells and isolated enzymes has displayed increased enzyme activity...
review 2019
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Corral-Pérez, Juan José (author), Billings, Amelia (author), Stoian, Dragos (author), Urakawa, A. (author)
Continuous synthesis of formic acid and methyl formate via CO<sub>2</sub> hydrogenation is demonstrated using a molecular iridium complex stably immobilized on a solid covalent triazine framework (CTF) under high-pressure conditions. Compared to formic acid synthesis, methyl formate synthesis is advantageous to enhance the selectivity and...
journal article 2019
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Li, G. (author), Vollmer, I. (author), Liu, C. (author), Gascon, Jorge (author), Pidko, E.A. (author)
Mo/ZSM-5 is one of the most studied and efficient catalysts for the dehydroaromatization of methane (MDA), but the mechanism of its operation remains controversial. Here, we combine an ab initio thermodynamic analysis with a comprehensive mechanistic density functional theory study to address Mo-speciation in the zeolite and identify the...
journal article 2019
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van Schie, M.M.C.H. (author), Zhang, W. (author), Tieves, F. (author), Choi, Da Som (author), Park, Chan Beum (author), Burek, Bastien O. (author), Bloh, Jonathan Z. (author), Arends, I.W.C.E. (author), Paul, C.E. (author), Alcalde, Miguel (author), Hollmann, F. (author)
Peroxygenases are very interesting catalysts for specific oxyfunctionalization chemistry. Instead of relying on complicated electron transport chains, they rely on simple hydrogen peroxide as the stoichiometric oxidant. Their poor robustness against H<sub>2</sub>O<sub>2</sub> can be addressed via in situ generation of H<sub>2</sub>O<sub>2<...
journal article 2019
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Sengar, A. (author), Van Santen, Rutger A. (author), Steur, E. (author), Kuipers, J.A.M. (author), Padding, J.T. (author)
journal article 2018
Searched for: subject:"Catalysis"
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