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Yoshikawa Y, Teshima K, Futamura R, Tanaka H, Neimark AV, Kaneko K. Structural mechanism of reactivation with steam of pitch-based activated carbon fibers. J Colloid Interface Sci 2020; 578:422-430. [PMID: 32535424 DOI: 10.1016/j.jcis.2020.06.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 06/01/2020] [Accepted: 06/01/2020] [Indexed: 11/18/2022]
Abstract
Customized micro- and mesoporous carbons are in high demand for ecofriendly technologies. Reactivation of the well-characterized pitch-based activated carbon fiber (ACF) can provide a clear understanding of the structural mechanism of steam activation, which would be helpful for designing better micro- and mesoporous carbons. ACFs were reactivated with steam at 973-1173 K. X-ray diffraction and Raman spectroscopy indicated that the stacking number of graphene-like layers of the pore wall decreased with an increase in the reactivation temperature. The average fiber diameter of the ACFs, which was measured via scanning electron microscopy, decreased with the increase in the reactivation temperature. The relationship between the decrease in the fiber diameter and the burn-off suggested that reactivation above 1023 K produced micropores inside the fiber. A deconvolution analysis of the pore-size distribution revealed the variation of the distribution. The peak difference was approximately 0.3 nm, depending on the reactivation temperature. These results indicate that reactivation with steam proceeds via the preferential one-by-one gasification of less-crystalline graphene-like units.
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Affiliation(s)
- Yasunori Yoshikawa
- Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, 4-17-1, Wakasato, Nagano 380-8553, Japan
| | - Katsuya Teshima
- Research Initiative for Supra-Materials, Shinshu University, 4-17-1, Wakasato, Nagano 380-8553, Japan.
| | - Ryusuke Futamura
- Department of Science, Faculty of Science, Shinshu University, 3-1-1, Asahi, Matsumoto 390-8621, Japan.
| | - Hideki Tanaka
- Research Initiative for Supra-Materials, Shinshu University, 4-17-1, Wakasato, Nagano 380-8553, Japan.
| | - Alexander V Neimark
- Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, NJ 08854-8058, United States.
| | - Katsumi Kaneko
- Research Initiative for Supra-Materials, Shinshu University, 4-17-1, Wakasato, Nagano 380-8553, Japan.
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2
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Iwanow M, Gärtner T, Sieber V, König B. Activated carbon as catalyst support: precursors, preparation, modification and characterization. Beilstein J Org Chem 2020; 16:1188-1202. [PMID: 32550932 PMCID: PMC7277711 DOI: 10.3762/bjoc.16.104] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 05/20/2020] [Indexed: 11/23/2022] Open
Abstract
The preparation of activated carbon materials is discussed along selected examples of precursor materials, of available production and modification methods and possible characterization techniques. We evaluate the preparation methods for activated carbon materials with respect to its use as catalyst support and identify important parameters for metal loading. The considered carbon sources include coal, wood, agricultural wastes or biomass as well as ionic liquids, deep eutectic solvents or precursor solutions. The preparation of the activated carbon usually involves pre-treatment steps followed by physical or chemical activation and application dependent modification. In addition, highly porous materials can also be produced by salt templating or ultrasonic spray pyrolysis as well as by microwave irradiation. The resulting activated carbon materials are characterized by a variety of techniques such as SEM, FTIR, nitrogen adsorption, Boehm titrations, adsorption of phenol, methylene blue and iodine, TPD, CHNS/O elemental analysis, EDX, XPS, XRD and TGA.
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Affiliation(s)
- Melanie Iwanow
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Bio-, Electro- and Chemocatalysis BioCat, Straubing Branch, Schulgasse 11a, 94315 Straubing, Germany.,Department of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93040 Regensburg, Germany
| | - Tobias Gärtner
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Bio-, Electro- and Chemocatalysis BioCat, Straubing Branch, Schulgasse 11a, 94315 Straubing, Germany
| | - Volker Sieber
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Bio-, Electro- and Chemocatalysis BioCat, Straubing Branch, Schulgasse 11a, 94315 Straubing, Germany.,Technical University of Munich, Campus Straubing for Biotechnology and Sustainability, Schulgasse 16, 94315 Straubing, Germany
| | - Burkhard König
- Department of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93040 Regensburg, Germany
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Swaminathan J, Enayat S, Meiyazhagan A, Robles Hernandez FC, Zhang X, Vajtai R, Vargas FM, Ajayan PM. Asphaltene-Derived Metal-Free Carbons for Electrocatalytic Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2019; 11:27697-27705. [PMID: 31291081 DOI: 10.1021/acsami.9b05309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The design of new and improved catalysts is an exciting field and is being constantly improved for the development of economically, highly efficient material and for the possible replacement of platinum (Pt)-based catalysts. In this, carbon-based materials play a pivotal role due to their easy availability and environment friendliness. Herein, we report a simple technique to synthesize layered, nitrogen-doped, porous carbon and activated carbons from an abundant petroleum asphaltene. The derived nitrogen-doped carbons were found to possess a graphene-like nanosheet (N-GNS) texture with a significant percentage of nitrogen embedded into the porous carbon skeleton. On the other hand, the activated porous carbon displayed a surface area (SA) of 2824 m2/g, which is significantly higher when compared to the nitrogen-doped carbons (SA of ∼243 m2/g). However, the nonactivated N-GNS were considered as an attractive candidate due to their high electrochemical active surface area, the presence of a mixture of porous structures, uniform layers, and effective doping of nitrogen atoms within the carbon matrix. Importantly, the hydrogen evolution reaction activity of the derived N-GNS sample illustrates a significant catalytic performance when compared to that of other nonfunctionalized carbons. Our current finding demonstrates the possibility of converting the asphaltene wastes into a high-value-functionalized porous carbon for catalytic applications.
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Affiliation(s)
| | | | | | - Francisco C Robles Hernandez
- Department of Mechanical Engineering Technology , University of Houston , Houston , Texas 77204-4020 , United States
| | | | - Robert Vajtai
- Interdisciplinary Excellence Centre, Department of Applied and Environmental Chemistry , University of Szeged , Rerrich Béla tér 1 , Szeged H-6720 , Hungary
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Li R, Li K, Wang G, Li L, Zhang Q, Yan J, Chen Y, Zhang Q, Hou C, Li Y, Wang H. Ion-Transport Design for High-Performance Na +-Based Electrochromics. ACS NANO 2018; 12:3759-3768. [PMID: 29595953 DOI: 10.1021/acsnano.8b00974] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Sodium ion (Na+)-based electrochemical systems have been extensively investigated in batteries and supercapacitors and also can be quality candidates for electrochromic (EC) devices. However, poor diffusion kinetics and severe EC performance degradation occur during the intercalation/deintercalation processes because the ionic radii of Na+ are larger than those of conventional intercalation ions. Here, through intentional design of ion-transport channels in metal-organic frameworks (MOFs), Na+ serves as an efficient intercalation ion for incorporation into a nanostructured electrode with a high diffusion coefficient of approximately 10-8 cm2 s-1. As a result, the well-designed MOF-based EC device demonstrates desirable Na+ EC performance, including fast switching speed, multicolor switching, and high stability. A smart "quick response code" display is fabricated using a mask-free laser writing method for application in the "Internet of Things". In addition, the concept of ion transport pathway design can be widely adopted for fabricating high-performance ion intercalation materials and devices for consumer electronics.
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Affiliation(s)
| | | | - Gang Wang
- School of Chemical and Biomolecular Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Lei Li
- State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an 710049 , People's Republic of China
| | | | - Jinhui Yan
- Department of Civil and Environmental Engineering , University of Illinois , Urbana-Champaign , Illinois 61801 , United States
| | - Yao Chen
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry , Sichuan University , Chengdu 610064 , People's Republic of China
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5
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Ongari D, Boyd PG, Barthel S, Witman M, Haranczyk M, Smit B. Accurate Characterization of the Pore Volume in Microporous Crystalline Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14529-14538. [PMID: 28636815 PMCID: PMC5745516 DOI: 10.1021/acs.langmuir.7b01682] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 06/20/2017] [Indexed: 05/19/2023]
Abstract
Pore volume is one of the main properties for the characterization of microporous crystals. It is experimentally measurable, and it can also be obtained from the refined unit cell by a number of computational techniques. In this work, we assess the accuracy and the discrepancies between the different computational methods which are commonly used for this purpose, i.e, geometric, helium, and probe center pore volumes, by studying a database of more than 5000 frameworks. We developed a new technique to fully characterize the internal void of a microporous material and to compute the probe-accessible and -occupiable pore volume. We show that, unlike the other definitions of pore volume, the occupiable pore volume can be directly related to the experimentally measured pore volumes from nitrogen isotherms.
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Affiliation(s)
- Daniele Ongari
- Laboratory
of Molecular Simulation, Institut des Sciences et Ingeénierie
Chimiques, Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Valais, Switzerland
| | - Peter G. Boyd
- Laboratory
of Molecular Simulation, Institut des Sciences et Ingeénierie
Chimiques, Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Valais, Switzerland
| | - Senja Barthel
- Laboratory
of Molecular Simulation, Institut des Sciences et Ingeénierie
Chimiques, Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Valais, Switzerland
| | - Matthew Witman
- Department
of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94760, United States
| | - Maciej Haranczyk
- IMDEA
Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, Spain
- Computational
Research Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Berend Smit
- Laboratory
of Molecular Simulation, Institut des Sciences et Ingeénierie
Chimiques, Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Valais, Switzerland
- E-mail:
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6
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Kuzmin V, Safiullin K, Stanislavovas A, Tagirov M. Helium-3 gas self-diffusion in a nematically ordered aerogel at low temperatures: enhanced role of adsorption. Phys Chem Chem Phys 2017; 19:23146-23153. [PMID: 28820197 DOI: 10.1039/c7cp03949b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We performed 3He gas diffusion measurements for the first time in a highly porous ordered Al2O3 aerogel sample at a temperature of 4.2 K using a nuclear magnetic resonance field gradient technique. A strong influence of 3He adsorption in the aerogel on self-diffusion is observed. The classical consideration of adsorptive gas diffusion in mesopores leads to anomalously high tortuosity factors. The application of a more sophisticated model than the simple combination of empirical two-phase diffusion and the Knudsen gas diffusion models is required to explain our results. Anisotropic properties of the aerogel are not reflected in the observed gas diffusion even at low gas densities where the anisotropic Knudsen regime of diffusion is expected. The observed gas densification indicates the influence of the aerogel attractive potential on the molecular dynamics, which probably explains the reduced diffusion process. Perhaps this behavior is common for any adsorptive gases in nanopores.
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Affiliation(s)
| | - Kajum Safiullin
- Kazan Federal University, Kazan, 420008, Russian Federation. and Institute of Perspective Research, Academy of Sciences of the Republic of Tatarstan, Kazan 420111, Russia
| | | | - Murat Tagirov
- Kazan Federal University, Kazan, 420008, Russian Federation. and Institute of Perspective Research, Academy of Sciences of the Republic of Tatarstan, Kazan 420111, Russia
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7
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Celzard A, Fierro V, Marêché J, Furdin G. Advanced Preparative Strategies for Activated Carbons Designed for the Adsorptive Storage of Hydrogen. ADSORPT SCI TECHNOL 2016. [DOI: 10.1260/026361707782398254] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
| | - V. Fierro
- Faculté des Sciences et Techniques, Nancy-Université, BP 239, 54506 Vandœuvre-lès-Nancy Cedex, France
| | - J.F. Marêché
- Faculté des Sciences et Techniques, Nancy-Université, BP 239, 54506 Vandœuvre-lès-Nancy Cedex, France
| | - G. Furdin
- Faculté des Sciences et Techniques, Nancy-Université, BP 239, 54506 Vandœuvre-lès-Nancy Cedex, France
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8
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Burchell TD, Omatete OO, Gallego NC, Baker FS. Use of Carbon Fibre Composite Molecular Sieves for Air Separation. ADSORPT SCI TECHNOL 2016. [DOI: 10.1260/0263617054353618] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The adsorption of oxygen, nitrogen and carbon dioxide onto a carbon fibre composite was investigated using static and dynamic techniques. Molecular-sieving effects in the composite were highlighted by the adsorption of carbon dioxide, a more sensitive probe molecule for the presence of micro-porosity in adsorbents. The kinetic studies revealed that oxygen was more rapidly adsorbed on the composite than nitrogen and with a higher uptake under equilibrium conditions. Preliminary experiments indicated that the carbon fibre composite was capable of separating oxygen and nitrogen from air on the basis of the different diffusion rates of the two molecules in the micropore network of the composite. It is proposed that the relatively high electrical conductivity of the carbon fibre composite material could be exploited for air separation by facilitating the production of O2 and N2 through electrical swing adsorption rather than the depressurization of adsorber beds.
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Affiliation(s)
- Timothy D. Burchell
- Oak Ridge National Laboratory, P.O. Box 2008, MS-6087, Oak Ridge, TN 37831-6087, USA
| | - Omats O. Omatete
- Oak Ridge National Laboratory, P.O. Box 2008, MS-6087, Oak Ridge, TN 37831-6087, USA
| | - Nidia C. Gallego
- Oak Ridge National Laboratory, P.O. Box 2008, MS-6087, Oak Ridge, TN 37831-6087, USA
| | - Frederick S. Baker
- Oak Ridge National Laboratory, P.O. Box 2008, MS-6087, Oak Ridge, TN 37831-6087, USA
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9
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In situ small angle X-ray scattering and benzene adsorption on polymer-based carbon hollow fiber membranes. ADSORPTION 2012. [DOI: 10.1007/s10450-012-9444-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Electrochemical response of carbon paste electrode modified with mixture of titanium dioxide/zirconium dioxide in the detection of heavy metals: Lead and cadmium. Talanta 2012; 101:110-21. [DOI: 10.1016/j.talanta.2012.09.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 09/04/2012] [Accepted: 09/05/2012] [Indexed: 11/18/2022]
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11
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Su Y, Xu S, Wang J, Xiao R. Spontaneous liquid–gas imbibition for characterization of carbon molecular sieves. J Colloid Interface Sci 2012; 377:416-20. [DOI: 10.1016/j.jcis.2012.03.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2011] [Revised: 03/11/2012] [Accepted: 03/14/2012] [Indexed: 10/28/2022]
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12
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Kaneko K, Itoh T, Fujimori T. Collective Interactions of Molecules with an Interfacial Solid. CHEM LETT 2012. [DOI: 10.1246/cl.2012.466] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Katsumi Kaneko
- Research Center for Exotic Nanocarbons, Shinshu University
| | - Tsutomu Itoh
- Research Center for Exotic Nanocarbons, Shinshu University
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13
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Fukada S, Ueda M, Izumi T, Wu G, Katayama K. Effects of Preadsorbed H 2O and CH 4on H 2and He Adsorption on Activated Carbon at Cryogenic Temperature. FUSION SCIENCE AND TECHNOLOGY 2012. [DOI: 10.13182/fst12-a13581] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Satoshi Fukada
- Kyushu University, Department of Advanced Energy Engineering Science Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan
| | - Makoto Ueda
- Kyushu University, Department of Advanced Energy Engineering Science Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan
| | - Takaaki Izumi
- Kyushu University, Department of Advanced Energy Engineering Science Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan
| | - Go Wu
- Kyushu University, Department of Advanced Energy Engineering Science Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kazunari Katayama
- Kyushu University, Department of Advanced Energy Engineering Science Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan
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14
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FUKADA S, TERASHITA M. Mixed Desorption of He, H2, and CH4Adsorbed on Charcoal Maximally Cooled at 10K. J NUCL SCI TECHNOL 2010. [DOI: 10.1080/18811248.2010.9720989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Ueda T, Omichi H, Chen Y, Kobayashi H, Kubota O, Miyakubo K, Eguchi T. 2H NMR study of 2D melting and dynamic behaviour of CDCl3 confined in ACF nanospace. Phys Chem Chem Phys 2010; 12:9222-9. [PMID: 20582342 DOI: 10.1039/b922681h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two-dimensional melting of trichloromethane (chloroform) confined in activated carbon fibre was investigated using differential thermal analysis and (2)H NMR techniques. Differential thermal analysis revealed a thermal anomaly with an endothermic peak at 269 K, which was distributed from 250 K to 287 K on the heating direction. This anomaly was also observed upon cooling at the same temperature. Furthermore, (2)H NMR revealed that slow motion such as molecular hopping and/or diffusion of CDCl(3) in ACF affected the spectral line width. The temperature dependence (Arrhenius plot) of the spectral line width showed an inflection point at 227 K. The activation energy of molecular motion of CDCl(3) in ACF was 4 kJ mol(-1) at temperatures greater than 227 K and 7.7 kJ mol(-1) at temperatures less than 227 K. Reduction of the activation energy suggests that the average intermolecular distance between CDCl(3) molecules enlarges above the inflection point. The difference of activation energy (3.7 kJ mol(-1)) is close to the enthalpy of fusion in typical plastic crystals. These results reveal that the thermal anomaly and the transition of dynamic process correspond respectively to melting of CHCl(3) in ACF and the pre-melting phenomenon.
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Affiliation(s)
- Takahiro Ueda
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
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Lozano-Castelló D, Suárez-García F, Cazorla-Amorós D, Linares-Solano Á. Porous Texture of Carbons. ADVANCED MATERIALS AND TECHNOLOGIES 2009. [DOI: 10.1201/9781420055405-c4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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17
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Kobori R, Ohba T, Suzuki T, Iiyama T, Ozeki S, Inagaki M, Nakamura A, Kawai M, Kanoh H, Kaneko K. Fine pore mouth structure of molecular sieve carbon with GCMC-assisted supercritical gas adsorption analysis. ADSORPTION 2009. [DOI: 10.1007/s10450-009-9162-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Ueda T, Omi H, Yukioka T, Eguchi T. High-Pressure129Xe NMR Study of the Intermolecular Interaction of Xenon Confined in Activated Carbon Fiber (ACF). BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2006. [DOI: 10.1246/bcsj.79.237] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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19
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Sedigh MG, Jahangiri M, Liu PKT, Sahimi M, Tsotsis TT. Structural characterization of polyetherimide-based carbon molecular sieve membranes. AIChE J 2006. [DOI: 10.1002/aic.690461116] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Kaneko K, Ohba T, Hattori Y, Sunaga M, Tanaka H, Kanoh H. Role of Gas Adsorption in Nanopore Characterization. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0167-2991(02)80214-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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21
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Iiyama T, Ohkubo T, Kaneko K. In situ X-ray diffraction studies on micropore filling. MEMBRANE SCIENCE AND TECHNOLOGY 2000. [DOI: 10.1016/s0927-5193(00)80004-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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22
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Watanabe A, Iiyama T, Kaneko K. Melting temperature elevation of benzene confined in graphitic micropores. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(99)00362-0] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Isobe H, Kaneko K. Porous Silica Particles Prepared from Silicon Tetrachloride Using Ultrasonic Spray Method. J Colloid Interface Sci 1999; 212:234-241. [PMID: 10092351 DOI: 10.1006/jcis.1999.6087] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Silica particles having the median diameter of 1 to 3 µm were prepared from silicon tetrachloride vapor by a reaction with water droplets using the ultrasonic spray method. The particle sizes of silicas were controlled by changing the composition of silicon tetrachloride and water. These silica particles had microporous structures from nitrogen and water adsorption measurements. The microporous and mesoporous particles were prepared from the reaction of water droplets including sodium and potassium carbonates with silicon tetrachloride vapor. Copyright 1999 Academic Press.
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Affiliation(s)
- H Isobe
- Technical Center, Fuji Chemical Co., Ltd., 1683-1880 Nasubigawa, Nakatsugawa, 509-9132, Japan
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24
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Ohkubo T, Iiyama T, Nishikawa K, Suzuki T, Kaneko K. Pore-Width-Dependent Ordering of C2H5OH Molecules Confined in Graphitic Slit Nanospaces. J Phys Chem B 1999. [DOI: 10.1021/jp984261v] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- T. Ohkubo
- Physical Chemistry, Material Science, Graduate School of Natural Science and Technology, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan, and Phase Science, Diversity and Fractal Science, Graduate School of Nature Science and Technology, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - T. Iiyama
- Physical Chemistry, Material Science, Graduate School of Natural Science and Technology, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan, and Phase Science, Diversity and Fractal Science, Graduate School of Nature Science and Technology, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - K. Nishikawa
- Physical Chemistry, Material Science, Graduate School of Natural Science and Technology, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan, and Phase Science, Diversity and Fractal Science, Graduate School of Nature Science and Technology, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - T. Suzuki
- Physical Chemistry, Material Science, Graduate School of Natural Science and Technology, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan, and Phase Science, Diversity and Fractal Science, Graduate School of Nature Science and Technology, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - K. Kaneko
- Physical Chemistry, Material Science, Graduate School of Natural Science and Technology, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan, and Phase Science, Diversity and Fractal Science, Graduate School of Nature Science and Technology, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
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25
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Control of supercritical gases with solid nanospace — environmental aspects. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0167-2991(99)80374-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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Iiyama T, Nishikawa K, Suzuki T, Otowa T, Hijiriyama M, Nojima Y, Kaneko K. Molecular Assembly Structure of CCl4 in Graphitic Nanospaces. J Phys Chem B 1997. [DOI: 10.1021/jp962408h] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- T. Iiyama
- Physical Chemistry, Material Science, Graduate School of Science and Technology, Chiba University, Phase Science, Diversity and Fractal Science, Graduate School of Science and Technology, Chiba University, Department of Chemistry, Faculty of Science, Chiba University 1-33 Yayoi, Inage, Chiba 263, Japan, and Research and Development Center, The Kansai Coke and Chemicals Co. Ltd., 1-1 Ohama, Amagasaki, Hyogo 660, Japan
| | - K. Nishikawa
- Physical Chemistry, Material Science, Graduate School of Science and Technology, Chiba University, Phase Science, Diversity and Fractal Science, Graduate School of Science and Technology, Chiba University, Department of Chemistry, Faculty of Science, Chiba University 1-33 Yayoi, Inage, Chiba 263, Japan, and Research and Development Center, The Kansai Coke and Chemicals Co. Ltd., 1-1 Ohama, Amagasaki, Hyogo 660, Japan
| | - T. Suzuki
- Physical Chemistry, Material Science, Graduate School of Science and Technology, Chiba University, Phase Science, Diversity and Fractal Science, Graduate School of Science and Technology, Chiba University, Department of Chemistry, Faculty of Science, Chiba University 1-33 Yayoi, Inage, Chiba 263, Japan, and Research and Development Center, The Kansai Coke and Chemicals Co. Ltd., 1-1 Ohama, Amagasaki, Hyogo 660, Japan
| | - T. Otowa
- Physical Chemistry, Material Science, Graduate School of Science and Technology, Chiba University, Phase Science, Diversity and Fractal Science, Graduate School of Science and Technology, Chiba University, Department of Chemistry, Faculty of Science, Chiba University 1-33 Yayoi, Inage, Chiba 263, Japan, and Research and Development Center, The Kansai Coke and Chemicals Co. Ltd., 1-1 Ohama, Amagasaki, Hyogo 660, Japan
| | - M. Hijiriyama
- Physical Chemistry, Material Science, Graduate School of Science and Technology, Chiba University, Phase Science, Diversity and Fractal Science, Graduate School of Science and Technology, Chiba University, Department of Chemistry, Faculty of Science, Chiba University 1-33 Yayoi, Inage, Chiba 263, Japan, and Research and Development Center, The Kansai Coke and Chemicals Co. Ltd., 1-1 Ohama, Amagasaki, Hyogo 660, Japan
| | - Y. Nojima
- Physical Chemistry, Material Science, Graduate School of Science and Technology, Chiba University, Phase Science, Diversity and Fractal Science, Graduate School of Science and Technology, Chiba University, Department of Chemistry, Faculty of Science, Chiba University 1-33 Yayoi, Inage, Chiba 263, Japan, and Research and Development Center, The Kansai Coke and Chemicals Co. Ltd., 1-1 Ohama, Amagasaki, Hyogo 660, Japan
| | - K. Kaneko
- Physical Chemistry, Material Science, Graduate School of Science and Technology, Chiba University, Phase Science, Diversity and Fractal Science, Graduate School of Science and Technology, Chiba University, Department of Chemistry, Faculty of Science, Chiba University 1-33 Yayoi, Inage, Chiba 263, Japan, and Research and Development Center, The Kansai Coke and Chemicals Co. Ltd., 1-1 Ohama, Amagasaki, Hyogo 660, Japan
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