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Abstract
AbstractWe present the development and application of X-ray Computed Tomography (CT) for the determination of the adsorption properties of microporous adsorbents and the study of breakthrough experiments in a laboratory fixed-bed adsorption column. Using the model system $$\text {CO}_2/\text {helium}$$
CO
2
/
helium
on activated carbon, equilibrium and dynamic adsorption/desorption measurements by X-ray CT are described, and the results are successfully compared to those obtained from conventional methods, including the application of a one-dimensional dynamic column breakthrough model. The study demonstrates the practical feasibility of applying X-ray CT to measure internal and transient concentration profiles in adsorbent systems on the length-scales from a single adsorbent pellet to a packed column.
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Pini R, Joss L. See the unseen: applications of imaging techniques to study adsorption in microporous materials. Curr Opin Chem Eng 2019. [DOI: 10.1016/j.coche.2019.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Yoda E, Kondo JN, Domen K. Detailed Process of Adsorption of Alkanes and Alkenes on Zeolites. J Phys Chem B 2005; 109:1464-72. [PMID: 16851117 DOI: 10.1021/jp047376+] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The adsorption of alkanes and alkenes on zeolites is investigated by comparing the adsorption characteristics for three types of zeolite: ferrierite, ZSM-5, and mordenite. The activation energy for the diffusion of propane and n-butane on ferrierite and the heat of adsorption of C(2)-C(4) alkanes and alkenes on zeolites and silica are estimated based on Fourier transform infrared spectroscopy, and the diffusion processes in the micropores are elucidated by comparing the results with previously reported activation energies for n-butene diffusion. The adsorption of 1-butene on mordenite is also examined. The structure and process of experimentally observable adsorption is found to differ depending on the type of zeolite and adsorbing molecule, reflecting differences in the sizes of molecules and pores. This differing behavior is utilized to interpret the elementary adsorption processes of alkanes and alkenes on zeolites.
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Affiliation(s)
- Eisuke Yoda
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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Ocakoglu RA, Denayer JFM, Marin GB, Martens JA, Baron GV. Tracer Chromatographic Study of Pore and Pore Mouth Adsorption of Linear and Monobranched Alkanes on ZSM-22 Zeolite. J Phys Chem B 2002. [DOI: 10.1021/jp0264533] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Refik A. Ocakoglu
- Dienst Chemische Ingenieurstechniek, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium, Laboratorium voor Petrochemische Techniek, Universiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium, and Centrum voor Oppervlaktechemie en Katalyse, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium
| | - Joeri F. M. Denayer
- Dienst Chemische Ingenieurstechniek, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium, Laboratorium voor Petrochemische Techniek, Universiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium, and Centrum voor Oppervlaktechemie en Katalyse, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium
| | - Guy B. Marin
- Dienst Chemische Ingenieurstechniek, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium, Laboratorium voor Petrochemische Techniek, Universiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium, and Centrum voor Oppervlaktechemie en Katalyse, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium
| | - Johan A. Martens
- Dienst Chemische Ingenieurstechniek, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium, Laboratorium voor Petrochemische Techniek, Universiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium, and Centrum voor Oppervlaktechemie en Katalyse, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium
| | - G. V. Baron
- Dienst Chemische Ingenieurstechniek, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium, Laboratorium voor Petrochemische Techniek, Universiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium, and Centrum voor Oppervlaktechemie en Katalyse, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium
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Bär NK, Balcom BJ, Ruthven DM. Direct Measurement of Transient Concentration Profiles in Adsorbent Particles and Chromatographic Columns by MRI. Ind Eng Chem Res 2002. [DOI: 10.1021/ie010821s] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nils-Karsten Bär
- MRI Centre, Department of Physics, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3 Canada, and Department of Chemical Engineering, University of Maine, Orono, Maine 04469
| | - Bruce J. Balcom
- MRI Centre, Department of Physics, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3 Canada, and Department of Chemical Engineering, University of Maine, Orono, Maine 04469
| | - Douglas M. Ruthven
- MRI Centre, Department of Physics, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3 Canada, and Department of Chemical Engineering, University of Maine, Orono, Maine 04469
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Noordhoek NJ, Schuring D, de Gauw FJMM, Anderson BG, de Jong AM, de Voigt MJA, van Santen RA. In Situ Study of Alkane Conversion on Pt-Loaded Acidic Zeolites. Ind Eng Chem Res 2002. [DOI: 10.1021/ie010455c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Niels J. Noordhoek
- Accelerator Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Danny Schuring
- Accelerator Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Frank J. M. M. de Gauw
- Accelerator Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Bruce G. Anderson
- Accelerator Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Arthur M. de Jong
- Accelerator Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Martien J. A. de Voigt
- Accelerator Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Rutger A. van Santen
- Accelerator Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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Schuring D, Koriabkina AO, de Jong AM, Smit B, van Santen RA. Adsorption and Diffusion of n-Hexane/2-Methylpentane Mixtures in Zeolite Silicalite: Experiments and Modeling. J Phys Chem B 2001. [DOI: 10.1021/jp010158l] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D. Schuring
- Laboratory of Inorganic Chemistry and Catalysis and Accelerator Laboratory, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Department of Chemical Engineering, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - A. O. Koriabkina
- Laboratory of Inorganic Chemistry and Catalysis and Accelerator Laboratory, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Department of Chemical Engineering, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - A. M. de Jong
- Laboratory of Inorganic Chemistry and Catalysis and Accelerator Laboratory, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Department of Chemical Engineering, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - B. Smit
- Laboratory of Inorganic Chemistry and Catalysis and Accelerator Laboratory, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Department of Chemical Engineering, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - R. A. van Santen
- Laboratory of Inorganic Chemistry and Catalysis and Accelerator Laboratory, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Department of Chemical Engineering, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
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Schuring D, Jansen APJ, van Santen RA. Concentration and Chainlength Dependence of the Diffusivity of Alkanes in Zeolites Studied with MD Simulations. J Phys Chem B 2000. [DOI: 10.1021/jp9927698] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- D. Schuring
- Schuit Institute of Catalysis, Laboratory of Inorganic Chemistry and Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - A. P. J. Jansen
- Schuit Institute of Catalysis, Laboratory of Inorganic Chemistry and Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - R. A. van Santen
- Schuit Institute of Catalysis, Laboratory of Inorganic Chemistry and Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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Van Der Linde SC, Jansen WP, De Goeij JJ, Van IJzendoorn LJ, Kapteijn F. In-target production of high specific radioactivity [15O]nitrous oxide by deuteron irradiation of nitrogen gas. Appl Radiat Isot 2000; 52:77-85. [PMID: 10670926 DOI: 10.1016/s0969-8043(99)00114-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A simple and rapid production method for high specific radioactivity [15O]N2O has been developed based on the 14N(d,n)15O reaction on high-purity nitrogen gas in a flow-through target irradiated with a 0.5 microA beam of 7 MeV deuterons. The [15O]N2O formed during irradiation is selectively concentrated from the target effluent by adsorption on a zeolite during 150 s and subsequently released by rapid heating into a pulse with a full width at half maximum of 3.5 s. The radioactivity and specific radioactivity in the pulse amount to 4 MBq [15O]N2O and 4.5 x 10(13) Bq/mol respectively with a radiochemical purity >99.95%. A tenfold higher specific radioactivity may be feasible at larger beam currents. It was shown that stable N2O was also formed during irradiation. Based on responses to variations in various parameters during irradiation and on analyses performed on the products, an explanation is given on the mechanisms of in-target [15O]N2O and N2O formation, involving reaction of a particular excited state of O3 with N2.
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Affiliation(s)
- S C Van Der Linde
- Faculty of Technical Natural Sciences, Delft University of Technology, The Netherlands
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Noordhoek NJ, van IJzendoorn LJ, Anderson BG, de Gauw FJ, van Santen RA, de Voigt MJ. Mass Transfer of Alkanes in Zeolite Packed-Bed Reactors Studied with Positron Emission Profiling. 2. Modeling. Ind Eng Chem Res 1998. [DOI: 10.1021/ie970347j] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Niels J. Noordhoek
- Cyclotron Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Leo J. van IJzendoorn
- Cyclotron Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Bruce G. Anderson
- Cyclotron Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Frank J. de Gauw
- Cyclotron Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Rutger A. van Santen
- Cyclotron Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Martien J. de Voigt
- Cyclotron Laboratory, Department of Applied Physics, and Department of Inorganic Chemistry and Catalysis, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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