Relevant bibliographies by topics / Zeolite NaA

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Zeolite NaA'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Zeolite NaA"

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Li, Shaojie, Shilong Jia, Tetsuya Nagasaka, Hao Bai, and Liyun Yang. "CO2 Adsorption Properties of Amine-Modified Zeolites Synthesized Using Different Types of Solid Waste." Sustainability 15, no. 13 (2023): 10144. http://dx.doi.org/10.3390/su151310144.

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In this study, organic amines were used to modify zeolite NaA and analcime synthesized using fly ash and iron tailing slag as raw materials, respectively, and the adsorption properties of the modified zeolites toward CO2 were determined. We found that when tetraethylenepentamine (TEPA) was used, the modified zeolite NaA and analcime had the highest nitrogen content. The adsorption capacity of the modified zeolite NaA for CO2 was 4.02 mmol/g and that of the modified analcime was 1.16 mmol/g when the adsorption temperature was 70 °C and the CO2 flow rate was 50 mL/min. According to the adsorptio
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Hou, Jin, and Qiwang Jiang. "Preparation of nanosized NaA zeolite and its surface modification by KH-550." Materials Science-Poland 36, no. 4 (2018): 638–43. http://dx.doi.org/10.2478/msp-2018-0083.

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AbstractNanosized NaA zeolite was successfully synthesized by hydrothermal method using tetraethyl orthosilicate (TEOS) and aluminum isopropoxide (AIP) as the main raw materials. The surface modification of NaA zeolite was carried out by silane coupling agent 3-aminopropyltriethoxysilane (KH-550). The effects of silane coupling agent dosage, reaction temperature, reaction time, hydrolysis time and pH value on grafting rate of NaA zeolite were investigated in detail. The zeolites were characterized by XRD, SEM-EDS, FT-IR and TG-DTA. The results showed that the surface of NaA zeolite was modifie
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Fayzullaev, Normurot, and Sohiba Pardayeva. "Synthesis of NaA-type Zeolite and its sorption properties." E3S Web of Conferences 402 (2023): 14012. http://dx.doi.org/10.1051/e3sconf/202340214012.

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In the article, the synthesis of NaA-type zeolite, its processing with alkali and acid, and the sorption capacity of the synthesized sorbent (composition: NaA type zeolite:clay=1:1) concerning Fe3+, Ni2+, Cr3+, Cu2+ were studied. The use of modified clays leads to significant changes in the structural and mechanical properties of the samples. Increasing the pH value of NaA-type zeolite-based moulding materials increases the proportion of plastic deformations by 1.5 times. An increase in the content of NaA-type zeolite in the forming materials sharply increases the percentage of elastic deforma
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Levenets, V. V., A. Yu Lonin, O. P. Omelnik, and A. O. Shchur. "Use of mathematical modeling for a comparative assessment of the sorption properties of natural and synthetic zeolites to cobalt." Nuclear Physics and Atomic Energy 22, no. 3 (2021): 318–23. http://dx.doi.org/10.15407/jnpae2021.03.318.

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Comparison of the sorption capacity of natural zeolite (clinoptilolite) and synthetic zeolites (NaX and NaA) in relation to cobalt ions is done under dynamic conditions. The sorption capacity of zeolites in relation to cobalt was: for clinoptilolite - 59.00 mg/g; for zeolite NaX - 87.03 mg/g; for zeolite NaA - 73.00 mg/g. Based on the data obtained, mathematical modeling of sorption isotherms was carried out using the Langmuir equation, Chebyshev criterion, and the criterion of the least-squares method. The performed correlation of the factual and model results indicates that the considered mo
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Assawasaengrat, Pornsawan, Thanasuta Limsakul, Penpichcha Bunprasert, Wasan Chokelarb, and Pongsert Sriprom. "Improving the Thermo-Physical Properties of Plam Oil with Zeolite Nanoparticles." Defect and Diffusion Forum 432 (March 25, 2024): 115–20. http://dx.doi.org/10.4028/p-6dmet0.

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This research aimed to improve the thermo-physical properties of plam oil with NaA zeolite. Palm oil was selected for heating oil due to its high flash point and environmental friendliness compared to synthetic or mineral oil. The effect of NaA zeolite concentration suspended in palm oil was investigated in terms of the specific heat capacity (Cp), viscosity (μ), viscosity index (VI), thermal analysis (TGA) and density (ρ) of palm oil. The NaA zeolite was synthesized by crystallization technique, and X-ray diffraction analysis was performed to determine NaA zeolite crystallinity. The size of N
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Akinruli, Ifedayo Joshua, Seun Samuel Owoeye, Segun Michael Abegunde, Ayodeji E. Onipede, and Ukoba Kingsley. "Synthesis and Characterization of NaA Zeolite Using Natural Kaolinite Clays from Nigeria by Low Temperature Hydrothermal Method." International Journal of Research in Engineering, Science and Management 4, no. 2 (2021): 40–47. http://dx.doi.org/10.47607/ijresm.2021.498.

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Zeolites NaA is one of the most valuable synthetic zeolites widely used as ion-exchange material, catalysts, and adsorbents in industry. There is therefore need to adopt a more energy-efficient route for its synthesis from low-cost and sustainable raw materials. In this present work, zeolites Na-A was synthesized from natural kaolinite clays obtained from three selected regions (Ikere, Okpella and Kankara) in Nigeria. The as-received kaolinite clays (IKclay, OKclay and KAclay) were initially beneficiated thoroughly to obtain pure powders (˂75 μm). The processed kaolinite clay powders were then
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Yuwen, Lin Lin, Meng Fu Zhu, Hong Bo Su, Xiu Dong You, Cheng Deng, and Xiao Long Lü. "Effects of Synthesis Parameters on Hydrothermal Synthesis of NaA Zeolite." Advanced Materials Research 148-149 (October 2010): 1444–48. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.1444.

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In this research, NaA zeolite samples were synthesized from aluminosilicate solution through hydrothermal method. The effects of different parameters such as the SiO2/Al2O3, OH-/Si and H2O/Na2O molar ratios of the initial gel solution, crystallization time and temperature on the crystallinity and morphology of the synthesized zeolites were investigated. The final products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and laser particle size analyzer. The experiment results indicated that the SiO2/Al2O3 molar ratio had influence on morphology and size of the
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Wang, Peng, Qi Sun, Yujiao Zhang, Jun Cao, and Xingmao Li. "Hydrothermal synthesis of Zeolite NaA from Kaolin." Functional Materials Letters 12, no. 05 (2019): 1950075. http://dx.doi.org/10.1142/s1793604719500759.

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Zeolite NaA was successfully synthesized from low-grade kaolin via hydrothermal synthesis method. The properties of the zeolite NaA were characterized by means of X-ray diffraction (XRD), Fourier transform infrared (FTIR), X-ray fluorescence (XRF), scanning electron microscopy (SEM)-energy-dispersive spectrometry (EDS), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET), and thermogravimetry (TG)-differential thermal analysis (DTA). TEM analysis indicated the formation of body-centered cubic crystal zeolite NaA and the polycrystallinity of the zeolite NaA structure. The textu
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Pikus, S., E. Olszewska, M. Majdan, and L. Pajak. "High quality powder diffraction data for A-type zeolite with selected divalent d-electron metals." Powder Diffraction 19, no. 2 (2004): 172–80. http://dx.doi.org/10.1154/1.1707039.

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Six A-type zeolites: NaA, MnNaA, CoNaA, NiNaA, ZnNaA, CdNaA have been characterized by X-ray powder diffraction. The zeolites with selected divalent cations have been synthesized by a very careful ion-exchange process using very high quality NaA zeolite. Experimental 2θ peak positions, relative peak intensities, values of d and Miller indices as well as a unit cell parameter are reported.
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Cao, Jun, Peng Wang, Jie Shen, and Qi Sun. "Core-shell Fe3O4@zeolite NaA as an Adsorbent for Cu2+." Materials 13, no. 21 (2020): 5047. http://dx.doi.org/10.3390/ma13215047.

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Here, using Fe3O4@SiO2 as a precursor, a novel core-shell structure magnetic Cu2+ adsorbent (Fe3O4@zeolite NaA) was successfully prepared. Several methods, namely X-ray diffraction (XRD), Fourier transform infrared spectrometer (FTIR), Transmission electron microscope (TEM), Brunauer Emmett Teller (BET) and vibrating sample magnetometry (VSM) were used to characterize the adsorbent. A batch experiment was conducted to study the Cu2+ adsorption capacity of Fe3O4@zeolite NaA at different pH values, contact time, initial Cu2+ concentration and adsorbent does. It is found that the saturated adsorp
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Dissertations / Theses on the topic "Zeolite NaA"

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Mzinyane, Nozipho Nompumelelo. "Characterization of NaA-zeolite membranes using pervaporation / Nozipho Nompumelelo Mzinyane." Thesis, North-West University, 2005. http://hdl.handle.net/10394/974.

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Pervaporation has gained increasing attention as an energy saving process for separating azeotropes such as ethanol and water mixtures. Pervaporation distinguishes itself from other membrane processes in that it entails a phase transition step that occurs during the diffusion through the membrane, from the liquid phase in the feed to a vapor phase in the permeate. Pervaporation performance is mainly regulated by the physicochemical structure of the membrane rather than the vapor-liquid equilibrium of the system. A significant amount of literature is available to show the successful development
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Vicens, Jim. "Continuous Zeolite Crystallization in Micro-Batch Segmented Flow." Digital WPI, 2018. https://digitalcommons.wpi.edu/etd-theses/1307.

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Zeolites are porous aluminosilicates that occur both naturally and synthetically, having numerous applications in catalysis, adsorption and separations. Despite over a half century of characterization and synthetic optimization of hundreds of frameworks, the exact mechanism of synthesis remains highly contested, with crystallization typically occurring under transport-limited regimes. In this work, a microcrystallization reactor working under segmented oscillatory flow has been designed to produce a semi-continuous flow of zeolite A. The fast injection of the reactants in a mixing section form
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Pera, Titus Marc. "Preparation, characterization and modeling of zeolite NaA membranes for the pervaporation dehydration of alcohol mixtures." Doctoral thesis, Universitat de Barcelona, 2006. http://hdl.handle.net/10803/1530.

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Zeolite NaA membranes have attracted special attention in the last years in light of their high selectivities (>40000) and fluxes in the dehydration of alcohol/water mixtures. This Ph.D. thesis is aimed at developing new methods for zeolite NaA membrane synthesis together with the characterization of their mass transfer mechanisms for their further application in membrane reactors.<br/>The membranes have been prepared onto the outer and inner surface of ceramic tubular supports by in situ and seeded hydrothermal synthesis. To avoid the shortcoming of low accessibility to the lumen of the tubes
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Loiola, Adonay Rodrigues. "DiagÃnese sped up of kaolinm to the zeolite NaA (LTA)for use in the water softener." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1513.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>Zeolite NaA (LTA) has been successfully synthesized by hydrothermal route, in which kaolim was used as silicon and aluminum source. The obtained zeolite was characterized by X-ray diffraction, X-ray absorption, thermogravimetry (TG), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), infrared absorption spectroscopy (IR), luminescence and granulometry. The X-ray diffraction data refinement by Rietveld method and software DBWS9807 has made possible the confirmation of only one crystallographic phase on the
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Muvumbu, Jean-Luc Mukaba. "Cation-exchanged zeolites-A prepared from South African fly ash feedstock for CO2 adsorption." University of the Western Cape, 2015. http://hdl.handle.net/11394/4699.

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>Magister Scientiae - MSc<br>In South Africa coal combustion constitutes up to 90 % of the country’s energy need. This coal combustion activity is known to contribute to the amount of about 40 % of the total CO2 atmospheric emissions worldwide that are responsible for global warming effects. In addition burning of coal generates a large quantity of fly ash which creates environmental pollution since only a small portion of it is currently used in some applications. In order, on one hand to mitigate and sequester CO2 and on the other hand to reprocess fly ash and reuse it, this study focuses on
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Loiola, Adonay Rodrigues. "DiagÃnese acelerada de caulim à zeÃlita NaA para uso no abrandamento de Ãguas." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2665.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>A zeÃlita NaA (LTA) foi eficientemente obtida atravÃs de sÃntese hidrotÃrmica, onde o caulim foi usado como fonte de silÃcio e alumÃnio. A zeÃlita obtida foi caracterizada pelas tÃcnicas de difraÃÃo de raios-X, absorÃÃo de raios-X, termogravimetria (TG), calorimetria diferencial exploratÃria (DSC), microscopia eletrÃnica de varredura (MEV), espectroscopia de absorÃÃo na regiÃo do infravermelho (IV), luminescÃncia e granulometria. O refinamento dos dados obtidos nas anÃlises de difraÃÃo de raios-X, atravÃs do mÃtodo de Rietveld e do
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Tsapatsis, Michael Gavalas George R. "Composite inorganic membranes for gas separations : chemical vapor deposition of hydrogen permselective oxide membranes and preparation of supported zeolite NaA films /." Diss., Pasadena, Calif. : California Institute of Technology, 1994. http://resolver.caltech.edu/CaltechETD:etd-11102005-083452.

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Moodley, Shawn. "Gas separation of steam and hydrogen mixtures using an α-alumina-Alumina supported NaA membrane / by S. Moodley". Thesis, North-West University, 2007. http://hdl.handle.net/10394/1890.

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Sarialp, Gokhan. "Dehydration Of Aqueous Aprotic Solvent Mixtures By Pervaporation." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614157/index.pdf.

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Aprotic solvents are organic solvents which do not easily react with a substance dissolved in it and they do not exchange protons despite of their high ion and polar group dissolving power. Therefore, this characteristic property makes aprotic solvents very suitable intermediates in many industries producing pharmaceuticals, textile auxiliaries, plasticizers, stabilizers, adhesives and ink. Dehydration of these mixtures and recirculation of valuable materials are substantial issues in industrial applications. The conventional method for recovery of aprotic solvents has been distillation, which
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Povinelli, Ana Paula Ribeiro [UNESP]. "Otimização da síntese das zeólitas NaA e NaX utilizando radiação de micro-ondas para aplicação como agentes hemostáticos coagulantes." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151218.

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Submitted by Ana Paula Ribeiro Povinelli (paulinha-pol@hotmail.com) on 2017-07-26T19:45:49Z No. of bitstreams: 1 Dissertacao_Ana_FINAL.pdf: 3540005 bytes, checksum: d82bc4d015af48c2fda01a4eff17975f (MD5)<br>Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-07-26T20:13:00Z (GMT) No. of bitstreams: 1 povinelli_apr_me_sjrp.pdf: 3540005 bytes, checksum: d82bc4d015af48c2fda01a4eff17975f (MD5)<br>Made available in DSpace on 2017-07-26T20:13:00Z (GMT). No. of bitstreams: 1 povinelli_apr_me_sjrp.pdf: 3540005 bytes, checksum: d82bc4d015af48c2fda01a4eff17975f (MD5) P
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Books on the topic "Zeolite NaA"

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Zaafarany, Ishaq A. Determination of trace elements in natural zeolites by neutron activation analysis (NAA). University of Salford, 1987.

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Grassian, Vicki H., and Sarah C. Larsen. Synthesis, characterization and environmental applications of nanocrystalline zeolites. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533053.013.18.

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This article describes the synthesis, characterization and environmental applications of nanocrystalline zeolites. It begins by considering the use of nanocrystalline zeolites as building blocks in the preparation of hierarchical zeolite structures, followed by a discussion of the synthesis of silicalite-1 with systematically varied crystal sizes, along with the synthesis of nanocrystalline aluminosilicates, NaZSM-5 and NaY. It then looks at the various applications of nanozeolites and hierarchical zeolite structures for environmental catalysis, adsorption of volatile organic compounds and oth
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Book chapters on the topic "Zeolite NaA"

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De Lara, Evelyne Cohen, and Josette Vincent-Geisse. "Infrared Induced Absorption of Nitrogen and Methane Adsorbed in NaA Synthetic Zeolite." In Phenomena Induced by Intermolecular Interactions. Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2511-6_30.

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Gora, L., A. W. C. van den Berg, W. Zhu, J. C. Jansen, F. Kapteijn, and T. Maschmeyer. "Quality enhancement of NaA zeolite membranes." In Studies in Surface Science and Catalysis. Elsevier, 2004. http://dx.doi.org/10.1016/s0167-2991(04)80859-0.

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Borgstedt, Eric v. R., Howard S. Sherry, and John P. Slobogin. "Ion-exchange behavior of zeolite NaA and maximum aluminum zeolite NaP." In Studies in Surface Science and Catalysis. Elsevier, 1997. http://dx.doi.org/10.1016/s0167-2991(97)80813-0.

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Denkewicz, R., and E. Borgstedtb. "Functional Properties of Zeolite NaA/Silicate-Based Builder Systems." In Proceedings of the 3rd World Conference on Detergents. AOCS Publishing, 1994. http://dx.doi.org/10.1201/9781439832660.ch38.

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Lara, E. Cohen De, R. Kahn, A. M. Goulay, and M. Lebars. "Molecular Dynamics by Numerical Simulation of Methane in Naa Zeolite." In Studies in Surface Science and Catalysis. Elsevier, 1989. http://dx.doi.org/10.1016/s0167-2991(08)61962-x.

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Mitchell, Martha C., Paul R. Van Tassel, Alon V. McCormick, and H. Ted Davis. "Modelling sorption in zeoite NaA with molecular density functional theory." In Zeolite Science 1994: Recent Progress and Discussions - Supplementary Materials to the 10th International Zeolite Conference, Garmish-Partenkirchen, Germany, July 17-22, 1994. Elsevier, 1995. http://dx.doi.org/10.1016/s0167-2991(06)81166-3.

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Jameson, A. K., C. J. Jameson, A. C. de Dios, E. Oldfield, and R. E. Gerald. "Direct observation of distributions of mixed clusters of coadsorbed species in zeolite NaA." In Zeolite Science 1994: Recent Progress and Discussions - Supplementary Materials to the 10th International Zeolite Conference, Garmish-Partenkirchen, Germany, July 17-22, 1994. Elsevier, 1995. http://dx.doi.org/10.1016/s0167-2991(06)81098-0.

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DE LARA, E. COHEN, R. KAHN, J. P. BOUCHAUD, and H. IBNASS. "ADSORPTION, COADSORPTION AND DIFFUSION OF ISOTOPIC HYDROGEN MOLECULES IN NaA ZEOLITE. EVIDENCE FOR QUANTUM EFFECTS AT 80 K." In Proceedings from the Ninth International Zeolite Conference. Elsevier, 1993. http://dx.doi.org/10.1016/b978-1-4832-8383-8.50091-x.

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Wenqin, Pang, Satoru Ueda, and Mitsue Koizumi. "The Synthesis of Zeolite NaA from Homogeneous Solutions and Studies of its Properties." In Studies in Surface Science and Catalysis. Elsevier, 1986. http://dx.doi.org/10.1016/s0167-2991(09)60871-5.

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Dimitrijević, R., N. Petranović, I. Krstanović, M. Šušić, and U. Mioč. "Crystal Structure and Mechanism of Ag+ Exchange on NaA-NaNO3 Inclusion Complex of Zeolite A." In Studies in Surface Science and Catalysis. Elsevier, 1985. http://dx.doi.org/10.1016/s0167-2991(08)65313-6.

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Conference papers on the topic "Zeolite NaA"

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Yuliia, Bondar, Šipková Adelá, and Vladislav Chrastný. "Fabrication of Nanocomposite Adsorbent Based on Manganese Dioxide-loaded Zeolite for Enhanced Removal of Cadmium from Contaminated Water and Soil." In 2024 IEEE 14th International Conference Nanomaterials: Applications & Properties (NAP). IEEE, 2024. http://dx.doi.org/10.1109/nap62956.2024.10739673.

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Białoszewska, Monika, Lidia Bandura, and Wojciech Franus. "Modified zeolite materials NaX and NaA as adsorbents for sulfamethoxazole." In 2nd International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: ENVIRONMENT – PLANT – ANIMAL – PRODUCT. Publishing House of The University of Life Sciences in Lublin, 2023. http://dx.doi.org/10.24326/icdsupl2.e005.

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Mirfendereski, Mojtaba, and Toraj Mohammadi. "Effects of Synthesis Parameters on the Characteristics of Naa Type Zeolite Nanoparticles." In The World Congress on Recent Advances in Nanotechnology. Avestia Publishing, 2016. http://dx.doi.org/10.11159/icnnfc16.113.

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Koubi, Laure, Monique Blain, Evelyne Cohen De Lara, and Jean-Marie Leclercq. "Vibrational frequency shifts of H2, N2 and O2 adsorbed in NaA zeolite." In The first European conference on computational chemistry (E.C.C.C.1). AIP, 1995. http://dx.doi.org/10.1063/1.47683.

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Viet, Thieu Quang Quoc, Tran Dinh Nhung, and Nguyen Quang Long. "Characterizations and ion-exchange properties of zeolite NaA synthesized in a continuous process." In INTERNATIONAL CONFERENCE ON CHEMICAL ENGINEERING, FOOD AND BIOTECHNOLOGY (ICCFB2017): Proceedings of the 3rd International Conference on Chemical Engineering, Food and Biotechnology. Author(s), 2017. http://dx.doi.org/10.1063/1.5000187.

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alves, rafaella da silva gomes, Thaizy de Gois Martins, Caio Victor Pereira Pascoal, Thaiamis do Nascimento Lopes, Fernanda Fonteles Alburquerque Macedo, and Adonay Rodrigues Loiola. "ZEOLITE NaA/REDUCED GRAPHENE OXIDE COMPOSITE AS A HIGH-PERFORMANCE ADSORBENT IN THE BIOGAS ENRICHMENT PROCESS." In 4th (ICAIC) International Conference for Academia and Industry Co-operation & 4th (IMMSEM) International Meeting in Materials Science and Engineering of Maranhão / Primeiro encontro Internacional do Norte e Nordeste em Ciência e Engenharia de Materiais. Even3, 2024. http://dx.doi.org/10.29327/4icaic-4th-immsem-1nnimmse.762854.

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Abdullah, Abdul Hadi, Ahmad Zamani Ab Halim, Mohd Abu Asshaary Daud, and Amri Hj Mohammed. "Process parameters optimization of dry reforming of methane over Mg/NAA zeolite catalyst using design of experiment." In PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE ON CHEMICAL PROCESSING AND ENGINEERING (4th IC3PE). AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0205289.

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Hussaro, K., S. Teekasap, T. Wessapan, and N. Somsuk. "Notice of Retraction: An alternative sludge waste management technology in ceramic industry for synthesis zeolite NaA (feasibility study)." In 2010 2nd International Conference on Computer Engineering and Technology (ICCET). IEEE, 2010. http://dx.doi.org/10.1109/iccet.2010.5486105.

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JIANG, YAN-XIA, NAN DING, and SHI-GANG SUN. "ENHANCEMENT OF IR ABSORPTION OF CO ADSORBED ON PALLADIUM NANOPARTICLES PREPARED BY SHIP-IN-A-BOTTLE IN SUPERCAGES OF NaA ZEOLITE." In Proceedings of the International Symposium on Solid State Chemistry in China. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812776846_0080.

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Zuryati, Ulul Khairi, Nurul Ismillayli, Muhammad Kafillah, Novia Amalia Sholeha, Eko Santoso, and Didik Prasetyoko. "Efficient and sustainable synthesis of zeolite NaA from Bangka kaolin: A study of reused filtrate as partial nutrients for the next synthesis." In PROCEEDINGS OF 2ND INTERNATIONAL CONFERENCE ON CHEMICAL PROCESS AND PRODUCT ENGINEERING (ICCPPE) 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/1.5140922.

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Reports on the topic "Zeolite NaA"

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Wongkasemjit, Sujitra, and Thanyalak Chaisuwan. Performance of Polybenzoxazine membrane for water–ethanol separation. Petroleum and Petrochemical College, Chulalongkorn University, 2016. https://doi.org/10.58837/chula.res.2016.47.

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In this research, polybenzoxazine (PBZ) membrane, NaA-PBZ double layered membrane, and NaA-PBZ mixed matrix membrane were prepared on tubular α-Al₂O₃³ support by dip-coating technique for separating ethanol-water mixture via pervaporation. Effects of preparation parameters and operating parameters, including PBZ precursor concentrations, number of dipping, type of PBZ precursor, NaA zeolite coating time, amount of NaA zeolite loading, feed ethanol concentration, and operating temperature, on the pervaporation performance were studied and discussed. Swelling tests of each prepared membranes wer
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Rangsunvigit, Pramoch, Santi Kulprathipanja, Pattaraporn Sridechprasat, and Natthapat Puttapatimok. Propane/propylene separation by adsorption using Cu⁺ on faujasite zeolites. Chulalongkorn University, 2013. https://doi.org/10.58837/chula.res.2013.98.

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Effects of three different reduction environments on the preparation of Cu(I)X and Cu(I)Y zeolites and their adsorption selectivities towards propylene were investigated. NaX and NaY zeolites were ion exchanged with ammoniacal copper solution before they were reduced with 1 h of ammonia flow, 2 h of ammonia flow, or 1 h of hydrogen flow. Results from inductively couple plasma indicated that there was an incomplete exchange between Cu+ and Na+, which may be from the limitation of this preparation method. The x-ray photoelectron spectroscopy results showed that all reduction methods provided the
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มาลากุล ณ อยุธยา, ปมทอง. การกำจัดสารประกอบกำมะถันในน้ำมันเชื้อเพลิงโดยการดูดซับบนตัวดูดซับประเภทซีโอไลท์ : รายงานวิจัยฉบับสมบูรณ์. วิทยาลัยปิโตรเลียมและปิโตรเคมี จุฬาลงกรณ์มหาวิทยาลัย, 2006. https://doi.org/10.58837/chula.res.2006.96.

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ปัจจุบันกฎระเบียบด้านสิ่งแวดล้อมที่เข้มงวดทำให้น้ำมันเชื้อเพลิงที่มีกำมะถันในปริมาณต่ำเป็นพิเศษเป็นที่ต้องการมากขึ้น ในช่วงที่ผ่านมากระบวนการดูดซับจึงได้รับความสนใจในการกำจัดสารประกอบกำมะถันประเภทที่กำจัดได้ยากซึ่งไม่สามารถกำจัดได้โดยวิธีไฮโดรดีซัลเฟอร์ไรเซชั่น (Hydrodesulfurization) งานวิจัยนี้เป็นการศึกษาการดูดซับสารประกอบกำมะถันประเภทไทโอฟีน 3 ชนิด คือ 3-เมทิลไทโอฟีน เบนโซไทโอฟีน และไดเบนโซไทโอฟีน ในระบบแบบต่อเนื่อง โดยใช้ตัวดูดซับ คือโซเดียมเอ็กส์ซีโอไลท์ (NaX zeolite) และใช้ดีเคน และไอโซออกเทน เป็นแบบจำลองของน้ำมันเชื้อเพลิงดีเซลและแก๊สโซลีนตามลำดับ โดยศึกษาผลกระทบของความเข้มข้นตั้งต้นของ
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