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Luan, Liping (author), Shi, Puxin (author), Wang, Zhi (author), Kapteijn, F. (author), Liu, Xinlei (author)Novel membrane materials for H<sub>2</sub> separation are wanted. How to overcome the “trade-off” between membrane permeability and selectivity is a tough challenge. Here we report new random organic framework membranes with benzimidazole and imine linkages to form hierarchical channels. Both high H<sub>2</sub>-selective and fast H<sub>2</sub...journal article 2024
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Valero Romero, M.J. (author), García-Mateos, F. J. (author), Kapteijn, F. (author), Rodríguez-Mirasol, J. (author), Cordero, T. (author)Cobalt-containing lignin-based fibers were synthesized in one step by electrospinning of Alcell lignin solutions as carbon precursor, a low-cost and renewable co-product of the paper making industry. The lignin fibers were thermostabilized in air to avoid the fusion during the carbonization process between 500 and 800 °C to obtain cobalt...journal article 2023
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Liu, C. (author), Uslamin, E. (author), Pidko, E.A. (author), Kapteijn, F. (author)The nature of hydrocarbon pool (HCP) intermediates in the methanol-to-hydrocarbons (MTH) process has been thoroughly investigated, especially for BEA- and CHA-type zeolite catalysts like H-β and H-SAPO-34. Herein, we further reveal the dynamic mechanistic details of the MTH process over the H-ZSM-5 catalyst at 400 °C, based on the dual-cycle...journal article 2023
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Liu, C. (author), Uslamin, E. (author), Pidko, E.A. (author), Kapteijn, F. (author)Monitoring complex catalytic pathways under industrially-relevant conditions is one of the key challenges in catalysis chemistry and technology. Herewith we describe a direct technique called ‘fast scanning-pulse analysis’ (FASPA) that allows the direct characterization and detailed kinetic analysis of intimately interweaved catalytic...journal article 2023
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Guest-induced structural deformation in Cu-based metal-organic framework upon hydrocarbon adsorptionLuna-Triguero, Azahara (author), Andres Garcia, E. (author), Leo LLorente, P. (author), Rook, W. (author), Kapteijn, F. (author)In a world where capture and separation processes represent above 10% of global energy consumption, novel porous materials, such as Metal-Organic Frameworks (MOFs) used in adsorption-based processes are a promising alternative to dethrone the high-energy-demanding distillation. Shape and size tailor-made pores in combination with Lewis acidic...journal article 2023
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Zhao, Guofeng (author), Moulijn, J.A. (author), Kapteijn, F. (author), Dautzenberg, Frits M. (author), Xu, Bin (author), Lu, Yong (author)Heterogeneous catalysis plays a pivotal role in the current chemical and energy vectors production. Notably, to fully utilize the intrinsic activity and selectivity of a catalyst, the chemical reactor has to be designed and operated optimally to achieve enhanced heat/mass transfer, well-defined contact time of reactants, uniform flow pattern,...journal article 2023
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Liu, C. (author), Uslamin, E. (author), Khramenkova, E. (author), Sireci, Enrico (author), Ouwehand, Lucas T.L.J. (author), Ganapathy, S. (author), Kapteijn, F. (author), Pidko, E.A. (author)The production of valuable aromatics and the rapid catalyst deactivation due to coking are intimately related in the zeolite-catalyzed aromatization reactions. Here, we demonstrate that these two processes can be decoupled by promoting the Ga/HZSM-5 aromatization catalyst with Ca. The resulting bimetallic catalysts combine high selectivity to...journal article 2022
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Liu, C. (author), Uslamin, E. (author), van Vreeswijk, Sophie H. (author), Yarulina, Irina (author), Ganapathy, S. (author), Weckhuysen, Bert M. (author), Kapteijn, F. (author), Pidko, E.A. (author)Identification of the catalyst characteristics correlating with the key performance parameters including selectivity and stability is key to the rational catalyst design. Herein we focused on the identification of property-performance relationships in the methanol-to-olefin (MTO) process by studying in detail the catalytic behaviour of MFI,...journal article 2022
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Wang, Xuerui (author), Zhou, Tao (author), Zhang, Ping (author), Yan, Wenfu (author), Li, Yongguo (author), Peng, Li (author), Veerman, Dylan (author), Shi, Mengyang (author), Gu, Xuehong (author), Kapteijn, F. (author)Capture and storage of the long-lived <sup>85</sup>Kr is an efficient approach to mitigate the emission of volatile radionuclides from the spent nuclear fuel reprocessing facilities. However, it is challenging to separate krypton (Kr) from xenon (Xe) because of the chemical inertness and similar physical properties. Herein we prepared high...journal article 2021
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Hussain, Mian Zahid (author), Yang, Zhuxian (author), van der Linden, B. (author), Huang, Zheng (author), Jia, Quanli (author), Cerrato, Erik (author), Fischer, Roland A. (author), Kapteijn, F. (author), Zhu, Yanqiu (author), Xia, Yongde (author)Surface-functionalized nitrogen/carbon co-doped polymorphic TiO<sub>2</sub> phase junction nanoparticles uniformly distributed in porous carbon matrix were synthesized by a simple one-step pyrolysis of titanium based metal–organic framework (MOF), NH<sub>2</sub>-MIL-125(Ti) at 700 °C under water vapour atmosphere. Introducing water vapour...journal article 2021
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Hussain, Mian Zahid (author), van der Linden, B. (author), Yang, Zhuxian (author), Jia, Quanli (author), Chang, Hong (author), Fischer, Roland A. (author), Kapteijn, F. (author), Zhu, Yanqiu (author), Xia, Yongde (author)In situformation of p-n heterojunctions between TiO<sub>2</sub>and Cu<sub>x</sub>O in heteroatom-doped carbon nanocomposites and their applications in photocatalytic H<sub>2</sub>evolution were demonstrated. One-step pyrolysis of bimetal-organic-frameworks NH<sub>2</sub>-MIL-125(Ti/Cu) in steam at 700 °C forms a p-n heterojunction between TiO...journal article 2021
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Pustovarenko, Alexey (author), Seoane, Beatriz (author), Abou-Hamad, Edy (author), King, Helen E. (author), Weckhuysen, Bert M. (author), Kapteijn, F. (author), Gascon, Jorge (author)3D printing, also known as additive manufacturing technology, has greatly expanded across multiple sectors of technology replacing classical manufacturing methods by combining processing speed and high precision. The scientific interest in this technology lies in the ability to create solid architectures with customized shapes and...journal article 2021
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Cong, Shenzhen (author), Yuan, Ye (author), Wang, Jixiao (author), Wang, Zhi (author), Kapteijn, F. (author), Liu, X. (author)New membrane materials with excellent water permeability and high ion rejection are needed. Metal-organic frameworks (MOFs) are promising candidates by virtue of their diversity in chemistry and topology. In this work, continuous aluminum MOF-303 membranes were prepared on α-Al2O3 substrates via an in situ hydrothermal synthesis method. The...journal article 2021
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Franz, R.P.M. (author), Kühlewind, T.S. (author), Shterk, Genrikh (author), Abou-Hamad, Edy (author), Parastaev, Alexander (author), Uslamin, E. (author), Hensen, Emiel J M (author), Kapteijn, F. (author), Gascon, Jorge (author), Pidko, E.A. (author)Coke deposition is one of the main challenges in the commercialisation of dry reforming of methane oversupported Ni catalysts. Besides the coke quantity, the structure of the deposits is also essential for thecatalyst lifetime. Accordingly, in this study, we analysed the effect of Na, K, and Cs promoters on boththese variables over Ni...journal article 2020
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Etxeberria Benavides, M. (author), Johnson, Timothy (author), Cao, Shuai (author), Zornoza, Beatriz (author), Coronas, Joaquín (author), Liu, X. (author), Andres Garcia, E. (author), Kapteijn, F. (author), Gascon, Jorge (author)High performance and commercially attractive mixed-matrix membranes were developed for H<sub>2</sub>/CO<sub>2</sub> separation via a scalable hollow fiber spinning process. Thin (~300 nm) and defect-free selective layers were successfully created with a uniform distribution of the nanosized (~60 nm) zeolitic-imidazole framework (ZIF-8) filler...journal article 2020
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Kapteijn, F. (author), Moulijn, J.A. (author)In this perspective paper a brief overview is given of the past developments in the field of structured catalysts and reactors, the potential for process intensification, energy and materials efficiency. Current exciting new developments for demanding processes are highlighted and directions indicated that contribute to a future sustainable...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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Etxeberria Benavides, M. (author), Karvan, Oguz (author), Kapteijn, F. (author), Gascon, Jorge (author), David, Oana (author)The elimination of the additional defect healing post‐treatment step in asymmetric hollow fiber manufacturing would result in a significant reduction in membrane production cost. However, obtaining integrally skinned polymeric asymmetric hollow fiber membranes with an ultrathin and defect‐free selective layer is quite challenging. In this...journal article 2019
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Pereira, Joana P.C. (author), Overbeek, W.J.M. (author), Gudiño Reyes, N.E. (author), Andres Garcia, E. (author), Kapteijn, F. (author), van der Wielen, L.A.M. (author), Straathof, Adrie J.J. (author)Biobased 2-butanol offers high potential as biofuel, but its toxicity toward microbial hosts calls for efficient techniques to alleviate product inhibition in fermentation processes. Aiming at the selective recovery of 2-butanol, the feasibility of a process combining in situ vacuum stripping followed by vapor adsorption has been assessed...journal article 2019
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Vollmer, I. (author), Kosinov, N. (author), Szécsényi, Ágnes (author), Li, G. (author), Yarulina, I. (author), Abou-Hamad, Edy (author), Gurinov, Andrei (author), Ould-Chikh, Samy (author), Aguilar-Tapia, Antonio (author), Hazemann, Jean Louis (author), Pidko, E.A. (author), Hensen, Emiel (author), Kapteijn, F. (author), Gascon, Jorge (author)The active sites on the methane dehydroaromatization (MDA) catalyst Mo/HZSM-5 are very hard to characterize, because they are present in various geometries and sizes and only form under reaction conditions with methane at 700 °C. To address these issues an experimental strategy is presented that enables distinguishing different active sites...journal article 2019