Relevant bibliographies by topics / Zeolit BEA

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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 'Zeolit BEA'

Author: Grafiati
Published: 24 April 2022
Last updated: 30 July 2025

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Journal articles on the topic "Zeolit BEA"

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Jendrlin, Martin, Julien Grand, Louwanda Lakiss, et al. "Environmental Applications of Zeolites: Hydrophobic Sn-BEA as a Selective Gas Sensor for Exhaust Fumes." Chemistry 5, no. 1 (2023): 334–47. http://dx.doi.org/10.3390/chemistry5010025.

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Environmental monitoring of pollutants, such as NOx and COx, which can be facilitated by a range of gas sensors, is of considerable fundamental and practical importance. This work has been focused on the synthesis and evaluation of zeolite β with tin (Sn-BEA) and dealuminated β (DeAl-BEA) zeolites. The zeolite samples have been extensively investigated by IR, UV-VIS and NMR spectroscopy, XRD, TGA, and N2 adsorption-desorption. The prepared Sn-BEA sample is characterised by the submicron particle size, an almost defect-free structure, and high hydrophobicity. Sensors containing selective microp
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Sobuś, Natalia, and Izabela Czekaj. "Comparison of Synthetic and Natural Zeolite Catalysts’ Behavior in the Production of Lactic Acid and Ethyl Lactate from Biomass-Derived Dihydroxyacetone." Catalysts 11, no. 8 (2021): 1006. http://dx.doi.org/10.3390/catal11081006.

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This article presents the results of the conversion of dihydroxyacetone (DHA) to lactic acid (LA) with the use of zeolite catalysts. For this purpose, synthetic zeolite beta (BEA) and natural clinoptilolite (CLI) were used as a matrix. The zeolites were modified with various metals (Sn, Fe, Cu and Zn) during ion exchange under hydrothermal conditions. The DHA conversion process with the participation of metal-functionalized zeolites allowed us to obtain intermediates, i.e., pyruvic aldehyde (PAL), which during the further reaction was transformed into a mixture of products such as ethyl lactat
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Soldatkin, О. О., V. M. Arkhypova, І. S. Kucherenko, D. Y. Kucherenko, and S. V. Dzyadevych. "ADAPTATION OF THE PROCEDURE OF CO-IMMOBILIZATION OF ENZYMES WITH DIFFERENT MODIFICATIONS OF ZEOLITES ON THE SURFACE OF CONDUCTOMETRIC TRANSDUCERS." Sensor Electronics and Microsystem Technologies 18, no. 4 (2021): 11–26. http://dx.doi.org/10.18524/1815-7459.2021.4.248177.

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A comparative study of different parameters of conductometric biosensors based on urease and glucose oxidase, co-immobilized with different types of zeolites. Urease immobilized on silicalite-2 was shown to have better performance than immobilized urease without zeolites. Conductometric biosensor with glucose oxidase co-immobilized with zeolite NH4+-Beta 25 had similar response values compared to immobilized enzyme without zeolite. Immobilization of zeolites NH4+-BEA 30 and H+-BEA 30 together with urease leads to an increase in the response of the biosensor, while the reproducibility of the si
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Putluru, Siva Sankar Reddy, Leonhard Schill, Anker Degn Jensen, and Rasmus S. N. Fehrmann. "Selective Catalytic Reduction of NOx with NH3 on Cu-, Fe-, and Mn-Zeolites Prepared by Impregnation: Comparison of Activity and Hydrothermal Stability." Journal of Chemistry 2018 (December 10, 2018): 1–11. http://dx.doi.org/10.1155/2018/8614747.

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Cu-, Fe-, and Mn-zeolite (SSZ-13, ZSM-5, and BEA) catalysts have been prepared by incipient wetness impregnation and characterized by N2 physisorption, H2-TPR, NH3-TPD, and XPS methods. Both metal and zeolite support influence the deNOx activity and hydrothermal stability. Cu-zeolites and Mn-zeolites showed medium temperature activity, and Fe zeolites showed high temperature activity. Among all the catalysts, Cu-SSZ-13 and Fe-BEA are the most promising hydrothermally resistant catalysts. Fresh and hydrothermally treated catalysts were further examined to investigate the acidic and redox proper
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Zhu, Longfeng, Jian Zhang, Liang Wang, et al. "Solvent-free synthesis of titanosilicate zeolites." Journal of Materials Chemistry A 3, no. 27 (2015): 14093–95. http://dx.doi.org/10.1039/c5ta02680f.

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Titanosilicate zeolites with MFI and *BEA structures are successfully synthesized using raw materials of fumed silica, titanium sulfate, organic templates, and zeolite seeds in the absence of solvents.
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Awala, Hussein, Elsa Leite, Loïc Saint-Marcel, et al. "Properties of methylene blue in the presence of zeolite nanoparticles." New Journal of Chemistry 40, no. 5 (2016): 4277–84. http://dx.doi.org/10.1039/c5nj02643a.

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Zhang, Jin, Talat Zakeri, Quidi Yue, et al. "Lewis acid zeolite catalysts via chemical modification of extra-large pore germanosilicates." Catalysis Today 440 (June 18, 2024): 114825. https://doi.org/10.5281/zenodo.12078452.

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Lewis acid zeolites containing tetravalent metals, such as Sn or Zr, are of great interest as catalysts for variousreactions owing to their tunability, activity, and reusability. In the context of emerging trends in biomass-relatedsubstrates processing, the synthesis of Lewis acid zeolites with extra-large pores presents a key step by addressingdiffusion restriction associated with these molecules. In this paper, we report on the incorporation of Sn and Zrinto extra-large pore zeolites UTL and *CTH through a four-step approach, including synthesis of parent germanosilicatezeolites, followed by
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Zhang, Jin, Talat Zakeri, Quidi Yue, et al. "Lewis acid zeolite catalysts via chemical modification of extra-large pore germanosilicates." Catalysis Today 440 (May 16, 2024): 114825. https://doi.org/10.5281/zenodo.13880101.

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Lewis acid zeolites containing tetravalent metals, such as Sn or Zr, are of great interest as catalysts for variousreactions owing to their tunability, activity, and reusability. In the context of emerging trends in biomass-relatedsubstrates processing, the synthesis of Lewis acid zeolites with extra-large pores presents a key step by addressingdiffusion restriction associated with these molecules. In this paper, we report on the incorporation of Sn and Zrinto extra-large pore zeolites UTL and *CTH through a four-step approach, including synthesis of parent germanosilicatezeolites, followed by
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Zhang, Jin, Talat Zakeri, Qiudi Yue, et al. "Lewis acid zeolite catalysts via chemical modification of extra-large pore germanosilicates." Catalysis Today 440 (May 16, 2024): 114825. https://doi.org/10.1016/j.cattod.2024.114825.

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Lewis acid zeolites containing tetravalent metals, such as Sn or Zr, are of great interest as catalysts for various reactions owing to their tunability, activity, and reusability. In the context of emerging trends in biomass-related substrates processing, the synthesis of Lewis acid zeolites with extra-large pores presents a key step by addressing diffusion restriction associated with these molecules. In this paper, we report on the incorporation of Sn and Zr into extra-large pore zeolites UTL and *CTH through a four-step approach, including synthesis of parent germanosilicate zeolites, follow
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Jendrlin, Martin, Julien Grand, Louwanda Lakiss, Philippe Bazin, Svetlana Mintova, and Vladimir Zholobenko. "Environmental Applications of Zeolites: Preparation and Screening of Cu-Modified Zeolites as Potential CO Sensors." Chemistry 5, no. 1 (2023): 314–33. http://dx.doi.org/10.3390/chemistry5010024.

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This work is focused on the application of Cu-containing zeolites as potential environmental sensors for monitoring carbon monoxide. A number of commercial zeolites with different structural properties (NaX, NaY, MOR, FER, BEA and ZSM-5) were modified using CuSO4, Cu(NO3)2 and Cu(OAc)2 solutions as copper sources to prepare Cu+-containing zeolites, since Cu+ forms stable complexes with CO at room temperature that can be monitored by infrared spectroscopy. Zeolite impregnation with Cu(NO3)2 resulted in the highest total Cu-loadings, while the Cu(OAc)2-treated samples had the highest Cu+/Cutotal
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Dissertations / Theses on the topic "Zeolit BEA"

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Kleinübing, Sirlei Jaiana. "Remoção de cadmio, chumbo e cobre utilizando zeolita natural clinoptilolita em coluna de leito fixo." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267629.

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Orientador: Meuris Gurgel Carlos da Silva<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-06T21:16:51Z (GMT). No. of bitstreams: 1 Kleinubing_SirleiJaiana_M.pdf: 1126683 bytes, checksum: 553f8d655916b1ac3c43231a2e0bbc05 (MD5) Previous issue date: 2006<br>Resumo: Neste trabalho foi estudada a remoção do íon cádmio, chumbo e cobre pela zeólita natural Clinoptilolita. Este estudo foi realizado em coluna de leito fixo construído em acnlico nas dimensões de 13,3 em de altura e 1,4 em de diâmetro interno. O estud
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Forte, Marcus Bruno Soares 1980. "Purificação de acido clavulanico utilizando zeolitas." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255532.

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Orientadores: Maria Isabel Rodrigues, Francisco Maugeri Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-10T13:37:00Z (GMT). No. of bitstreams: 1 Forte_MarcusBrunoSoares_M.pdf: 5091221 bytes, checksum: f695e6ea266b0c682b2b8ce3dcc509ae (MD5) Previous issue date: 2008<br>Resumo: O presente trabalho teve como objetivo principal a separação e purificação de acido clavulanico a partir de caldo fermentado utilizando zeolitas. Foram utilizadas zeolita natural (ZN) e sintetica faujasita (13X), ambas modi
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Ameh, Emmanuel Alechine. "Sustainable synthesis of BEA zeolite from fly ash-based amorphous silica." University of Western Cape, 2019. http://hdl.handle.net/11394/7522.

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Philosophiae Doctor - PhD<br>Power generation in South Africa depends majorly on the combustion of coal and the increasing demand for energy due to industrialisation and population growth signifies the continuous consumption of coal. During this process, a by-product known as coal fly ash (CFA) is generated which poses several environmental issues. The common management of the waste involves the disposal of CFA in landfills or the direct disposal to open uncultured lands, thus contaminating water bodies by the leaching of constituent CFA metals and salts that render arable land uncultiva
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Bonati, Matteo L. M. "Characterisation and mechanistic studies of the acylation of anisole catalaysed by zeolite BEA." Thesis, Nottingham Trent University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.429426.

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Ozturk, Seckin. "Immobilization Of Zeolite Crystals On Solid Substrates For Biosensor Aplications." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611992/index.pdf.

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Electrochemical biosensors are cost effective, fast and portable devices, which can determine the existence and amounts of chemicals in a specific medium. These devices have many potential applications in many fields such as determination of diseases, process and product control, environmental monitoring, and drug research. To realize these potentials of the devices, many studies are being carried out to increase their sensitivity, selectivity and long term stabilities. Surface modification studies with various types of particles (metal nano particles, carbon nano tubes etc.) can be count amon
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Grabherr, Hildegard. "Einfluss von Zeolith A auf die Futteraufnahme, den Mineralstoff- und Energiestoffwechsel im peripartalen Zeitraum sowie auf die Nährstoffverdaulichkeit bei Milchkühen." Doctoral thesis, Universitätsbibliothek Leipzig, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:15-20100526-072207-0.

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Die hypocalcämische Gebärparese, insbesondere die subklinische Hypocalcämie, die oft nicht erkannt wird und Ursache vieler sekundär auftretender Folgeerkrankungen ist, stellt in der intensiven Milchviehhaltung ein bedeutendes Problem dar. Inzwischen gibt es eine Reihe verschiedener Vorbeugungsstrategien, wobei der Einsatz von Zeolith A als Ca-Binder in der Ration gegen Ende der Trächtigkeit eine relativ neue Präventionsmöglichkeit darstellt. Da zu diesem Futterzusatzstoff noch wenige Untersuchungen, insbesondere auf Nebeneffekte vorliegen, war das Ziel dieser Studien, den Einfluss von Zeolith
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Kuhn, Raquel Cristine. "Purificação de oligossacarideos utilizando coluna de leito fixo de zeolitas." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256546.

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Orientador: Francisco Maugeri Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-07T02:51:20Z (GMT). No. of bitstreams: 1 Kuhn_RaquelCristine_M.pdf: 869149 bytes, checksum: 29e524283c358cff48f2049cd6406f50 (MD5) Previous issue date: 2006<br>Resumo: Os frutooligossacarídeos (FOS) são considerados ingredientes naturais de alimentos devido aos efeitos benéficos na proliferação de bifidobactérias no cólon humano, sendo classificados como prebióticos. Estudos recentes demonstram que a separação cromatogr
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Kirdeciler, Salih Kaan. "Preparation Of Functional Surfaces Using Zeolite Nanocrystals For Biosensor And Biomedical Applications." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614515/index.pdf.

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Zeolites are crystalline aluminosilicates which have highly ordered pore structures and high surface area. Also the tailorable surface properties, high ion-exchange capability, high chemical, thermal, and mechanical strength make these particles an important candidate for various application such as sensors, catalysis, dielectric materials, separation, and membrane technologies. Although zeolites have these unique properties, applications where zeolites are integrated into devices according to their application areas, are limited due to the powder form of the material. The purpose of the curr
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Sammoury, Hussein. "Synthesis of new zeolitic materials for hydroisomerization of n-alkanes by bifunctional catalysis to obtain medium distillates (C10-C14)." Thesis, Poitiers, 2017. http://www.theses.fr/2017POIT2289/document.

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Deux zéolithes nanocristaux de type *BEA et CP814E commerciales avec de différentes propriétés texturales, et une zéolithe microcristaux de type *BEA qui a été synthétisée durant cette thèse, ont été modifiées par une desilication en utilisant de différents traitements alcalins. Toutes les zéolithes parentes et certaines désilicées ont été sélectionnée pour le craquage du n-hexane, où aucune amélioration significative de la conversion n'a été observée après la désilication. Toutes les zéolithes parentes et quelques désilicées sélectionnées ont été transformés en leur forme bifonctionnelle par
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Astafan, Amir. "Synthèses, caractérisations et performances catalytiques des zéolithes nanoéponge de type structurale *BEA." Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2269/document.

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La méthode à privilégier pour améliorer dans les zéolithes la diffusion des réactifs, des intermédiaires réactionnels et des produits est de raccourcir la longueur du chemin diffusionnel, c'est-à-dire de diminuer la taille des cristaux. La croissance des cristallites est fonction de la composition du gel de synthèse, du temps de cristallisation, de la température, etc. La maîtrise de cette croissance permet d'obtenir un large éventail de taille pouvant aller de plusieurs micromètres à seulement quelques dizaines de nanomètres. Dorénavant, il est possible de limiter le chemin diffusionnel à seu
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Books on the topic "Zeolit BEA"

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Calis, Hans Peter Alexander. Development of dustproof, low pressure drop reactors with structured catalyst packings: The bead string reactor and the zeolite-covered screen reactor. Eburon, 1995.

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Book chapters on the topic "Zeolit BEA"

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Fischer, R. X., and W. H. Baur. "BEC." In Zeolite-Type Crystal Structures and their Chemistry. 41 New Framework Type Codes. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41452-7_4.

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Baur, W. H., and R. X. Fischer. "Crystal structure and chemical composition of compounds with BEA type zeolite frameworks." In Microporous and other Framework Materials with Zeolite-Type Structures. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54252-1_47.

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Kim, Hyungjun. "Sodium Diffusion Through Aluminum-Doped Zeolite BEA System: Effect of Water Solvation." In Springer Theses. Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7601-7_4.

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Urbański, Marek, Elżbieta Szmigiera, Grzegorz Adamczewski, Piotr P. Woyciechowski, and Kostiantyn Protchenko. "Bond Characteristics of BFRP and GFRP Bars in Concrete with Additives—Results from a Beam Test Study." In Springer Proceedings in Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72955-3_41.

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AbstractThis article presents a comparative analysis of the bond behavior of steel bars in concrete and bars made of basalt fiber-reinforced polymer (BFRP) and glass fiber-reinforced polymer (GFRP) in modified concrete. While steel bars have been the conventional choice for reinforcement in concrete structures, their bonding properties are well established. In contrast, FRP bars possess distinct mechanical and physical properties, which can lead to different bonding behavior in concrete. The study investigated the effects of concrete properties and bar characteristics on the bond behavior of G
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Armor, J. N., and Brian H. Toby. "Zeolites Offer Variety as Ligands." In Advances in Chemistry. American Chemical Society, 1997. http://dx.doi.org/10.1021/ba-1997-0253.ch006.

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Apollo, Seth, and John Kabuba. "Zeolite for Treatment of Distillery Wastewater in Fluidized Bed Systems." In Inorganic-Organic Composites for Water and Wastewater Treatment. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5916-4_5.

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Bein, Thomas, Patricia Enzel, Francois Beuneu, and Libero Zuppiroli. "Stabilization of Conducting Heteroaromatic Polymers in Large-Pore Zeolite Channels." In Electron Transfer in Biology and the Solid State. American Chemical Society, 1989. http://dx.doi.org/10.1021/ba-1990-0226.ch023.

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Petzoldt, O., H. J. Fell, and H. W. Bräuer. "Removal of Mercury from Gases by Modified Zeolites in a Stationary Bed." In Mercury Contaminated Sites. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-03754-6_21.

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Cao, X. X., B. X. Shen, F. Lu, and Y. Yao. "Catalytic Pyrolysis of Cotton Straw by Zeolites and Metal Oxides." In Proceedings of the 20th International Conference on Fluidized Bed Combustion. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02682-9_99.

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Ouled Ltaief, Olfa, Nesrine Dammak, and Mourad Benzina. "Fixed Bed Adsorption Dynamics Experimental Study and Modeling of C3H6 Capture into Faujasite Type Zeolite." In Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-70548-4_60.

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Conference papers on the topic "Zeolit BEA"

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Watcharasing, Sunisa, Chularat Wattanakit, Anawat Thivasasith, and Prapoj Kiattikomol. "Hierarchical Zeolites from Production Sand Waste as Catalysts for CO2 to Carbon Nanotubes CNTs: Exploration and Production Sustainability." In IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/209923-ms.

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Abstract This project targets to convert sand waste from oil &amp; gas production, which is typically disposed as landfill, to be the higher-value products, called "Hierarchical Zeolites". This project also explores opportunities to lower amount of sand waste to landfill and try to convert CO2 to CNTs, as part of Sustainable Development Goals. Hierarchical Zeolites is developed with nanosheets morphology to overcome limitation of conventional zeolites in terms of, 1) microporous structure improvement to enhance the mass transport through active sites, 2) longer catalyst lifetime, and 3) higher
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Chan, K. C., and Christopher Y. H. Chao. "Improved Thermal Conductivity of 13X/CaCl2 Composite Adsorbent by CNT Embedment." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17168.

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Adsorption cooling systems utilize the principle of adsorption to generate cooling effect. Composite adsorbents synthesized from zeolite 13X and CaCl2 have previously been shown to have a high adsorption capacity and high adsorption rate with lower desorption temperature where the adsorption capacity and adsorption rate are 420% and 122% of zeolite 13X under the same condition respectively. This results in more compact design and a lower temperature waste-heat source can be used. The system performance is, however, limited by the low thermal conductivity of the 13X/CaCl2 composite adsorbent wh
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Wadawadagi, Swati Bhimasenrao, and Reddy C. Venkataramana. "EXPERIMENTAL INVESTIGATIONS ON REDUCTION OF CO AND HC IN SI ENGINE WITH CATALYTIC CONVERTER." In Small Engine Technology Conference & Exposition. Society of Automotive Engineers of Japan, 2007. http://dx.doi.org/10.4271/2007-32-0055.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;Catalytic bed have been developed by coating copper and silver as catalyst on 13-X zeolite as base element and its activity in reducing oxides of nitrogen (NOx) and oxidizing carbon monoxide (CO) and hydrocarbon (HC) in an petrol engine exhaust has been tested. The silver coated 13-X zeolite catalyst studied here, exhibits significant NOx, CO and HC reduction at a space velocity of 15000 h&lt;sup&gt;-1&lt;/sup&gt; and 13-X zeolite and silver in the ratio of 20:3 by mass. A maximum reduction of 60% in CO and 74% in HC has
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Liangxiong, Li, Ashlee Ryan, Tina M. Nenoff, Junhang Dong, and Robert Lee. "Purification of Coal-Bed Methane Produced Water by Zeolite Membranes." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2004. http://dx.doi.org/10.2118/89892-ms.

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Chan, K. C., Christopher Y. H. Chao, and M. Bahrami. "Heat and Mass Transfer Characteristics of a Zeolite 13X/CaCl2 Composite Adsorbent in Adsorption Cooling Systems." In ASME 2012 6th International Conference on Energy Sustainability collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/es2012-91246.

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The performance of the adsorption cooling system using the zeolite 13X/CaCl2 composite adsorbent was studied using a numerical simulation. The novel zeolite 13X/CaCl2 composite adsorbent with superior adsorption properties was developed in previous studies [11]. It has high equilibrium water uptake of 0.404 g/g between 25°C and 100°C under 870Pa. The system specific cooling power (SCP) and coefficient of performance (COP) were successfully predicted for different operation parameters. The simulated COP with the composite adsorbent is 0.76, which is 81% higher than a system using pure zeolite 1
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Rubashvili, Imeda, Ketevan Ebralidze, Marine Zautashvili, and Vladimer Tsitsishvili. "DEVELOPMENT OF ADSORPTIVE METHOD FOR REMOVAL OF AZITHROMYCIN FROM WASTEWATER TREATMENT PLANT EFFLUENT USING ACID-MODIFIED NATURAL ZEOLITES." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023v/3.2/s12.12.

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The present work is the first case where the adsorptive removal of the most commonly used antibiotic - azithromycin from aqueous solution as a model of wastewater treatment plant effluent by acid-modified natural zeolite - clinoptilolite has been investigated. The adsorption processes were carried out under static and dynamic conditions. The acid-modified form of the above-mentioned natural zeolite were obtained with hydrothermal treatment by using 2M hydrochloric acid solution. In order to investigate the adsorption dynamic process, there was used the specially constructed laboratory dynamic
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Fujii, Shoma, Yuichiro Kanematsu, Yasunori Kikuchi, and Takao Nakagaki. "Effect of Multi Injection Process on “Zeolite Boiler” in Thermochemical Energy Storage and Transport System of Unused Heat From Bagasse Boiler." In ASME 2017 11th International Conference on Energy Sustainability collocated with the ASME 2017 Power Conference Joint With ICOPE-17, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/es2017-3253.

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In the sugar mill in Tanegashima which is an isolated island in Japan, raw sugar production process produces raw sugar and bagasse simultaneously. Raw bagasse is not storable because of its perishability due to high moisture content. Actually, the bagasse boiler burns more bagasse than that is required for the sugar mill. Hence, the temperature of flue gas increases and a massive amount of unused heat at around 200 °C is exhausted during sugar mill operation period. On the other hand, many other factories in this island burn imported oil at package boilers to generate process steam up to 120 °
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Wang, H., J. Q. Bai, Z. G. Qu, Y. Wang, and Y. Zhang. "A Combined GCMC and FVM Simulation Method for CO2 Adsorption in 13X Zeolite Adsorption Bed." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87009.

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A multi-scale method combining the finite volume model (FVM) considering Darcy-Brinkman formulation with grand conical Monte Carlo (GCMC) is built to study the process of CO2 adsorption in 13X zeolite particle bed. The saturation adsorption capacities and adsorption heat in FVM method are calculated by Langmuir model and linear fitting formula, respectively. The GCMC method is used to obtain the parameters of Langmuir model and linear fitting formula. The multi-scale method overcomes the shortcomings of the saturation adsorption capacities restricted by level of experimentation or empirical fo
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Baker, Derek K., and Bilgin Kaftanog˘lu. "Trends in COP for Adsorption Cooling Cycles With Thermal Regeneration and Finite Number of Beds." In ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/es2008-54039.

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A thermodynamic model is developed to predict trends in limiting COP of an adsorption cooling cycle with thermal regeneration between n beds, where n is any even number and each bed is spatially isothermal. The results of the model indicate the optimum distribution of beds throughout the cycle to maximize thermal regeneration. Simulations were run for silica gel-water and zeolite-water adsorbent-refrigerant pairs as the maximum bed temperature and the bed’s sensible load were varied. For the silica gel-water pair, the exothermic adsorption process occurs at lower temperatures than the endother
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Das, Randip K., B. B. Ghosh, Souvik Bhattacharyya, and Maya DuttaGupta. "Catalytic Control of SI Engine Emissions Over Ion-Exchanged X-Zeolites." In ASME 1997 Turbo Asia Conference. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-aa-077.

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Three catalysts based on X-zeolite have been developed by exchanging its Na+ ion with Copper, Iron and Nickel metal ions and tested in a SI engine exhaust for a wide range of exhaust and operating conditions. Of the three catalysts, the Cu-X catalyst exhibits the best NOx and CO conversion performance while Ni-X shows slightly better performance compared to the Fe-X catalyst at any catalyst temperature. Unlike noble metals, the doped X-zeolite catalysts, studied here, exhibit significant NOx reduction for a wide λ range and exhibit a slow rate of decrease with increase in λ ratio. Back pressur
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Reports on the topic "Zeolit BEA"

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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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ไชยอนันต์สุจริต, โสมวดี, อธิชา ฉายสุวรรณ та นุริยา กาเจ. การเปลี่ยนรูปพอลิพรอพิลีนเป็นน้ำมันด้วยตัวเร่งปฏิกิริยาผสม ZSM-5/Al-HMS และ zeolite beta/Al-HMS. จุฬาลงกรณ์มหาวิทยาลัย, 2009. https://doi.org/10.58837/chula.res.2009.54.

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ศึกษาการเปลี่ยนรูปพอลิพรอพิลีนด้วยตัวเร่งปฏิกิริยาผสมระหว่างวัสดุที่มีโพรงขนาดเล็กและขนาดกลาง ตัวเร่งปฏิกิริยาผสมสองชนิด ได้แก่ ZSM-5/Al-HMS และ zeolite beta/Al-HMS สามารถเตรียมได้จากวิธีผสมทางกายภาพระหว่าง ZSM-5, ซีโอไลต์ beta และ Al-HMS ซึ่งวัสดุที่มีโพรงขนาดเล็ก ZSM-5 (Si/Al= 40) และซีโอไลต์ beta (Si/Al= 60) จะมีความเป็นกรดสูงและโพรงมีขนาด 0.6 นาโนเมตร ในขณะที่วัสดุที่มีโพรงขนาดกลาง Al-HMS มีความเป็นกรดต่ำ และโพรงมีขนาด 4.2 นาโนเมตร Al-HMS จะถูกปรับปรุงคุณสมบัติด้วยการนำไปบำบัดด้วยแอมโมเนียมคลอไรด์ความเข้มข้น 1 โมลาร์นาน 3 ชั่วโมงเพื่อกำจัดอะลูมินาที่มีโครงสร้างออกตะฮีดรัลและอยู่นอกโครงสร้า
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เหลืองนฤมิตชัย, อาภาณี, та ศิริรัตน์ จิตการค้า. การผลิตไฮโดรเจนจากปฏิกิริยารีฟอร์มมิงด้วยคาร์บอนไดออกไซด์และน้ำด้วยตัวเร่งปฏิกิริยานิเกิล : รายงานฉบับสมบูรณ์. จุฬาลงกรณ์มหาวิทยาลัย, 2005. https://doi.org/10.58837/chula.res.2005.72.

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นอกจากการใช้เป็นสารดั้งดันในกระบวนการผลิตสารเคมีแล้ว ก๊าซไฮโดรเจนยังได้รับความสนใจในการใช้เป็นเชื้อเพลิงในเทคโนโลยีฟูเอลเซลล์ (Fuel cell) ปฏิกิริยาการรีฟอร์มก๊าซมีเทนด้วยไอน้ำโดยเป็นปฏิกิริยาหลักในการผลิตก๊าซไฮโดรเจน ในงานวิจัยนี้ได้ทำการศึกษาปฏิกิริยาการรีฟอร์มก๊าซมีเทนด้วยไอน้ำโดยใช้ตัวเร่งปฏิกิริยานิกเกิลบนเคแอลซีโอไลท์ (KL zeolite) ซึ่งเตรียมโดยวิธีอิมเพรกเนชัน (Impregnation method) และได้ทำการทดสอบคุณสมบัติของตัวเร่งปฏิกิริยาโดยใช้ BET, XRD, TPR วัตถุประสงค์หลักในงานวิจัยนี้ เพื่อศึกษาผลกระทบของปริมาณนิกเกิลที่ใช้ สารปรับปรุงคุณภาพของตัวเร่งปฏิกิริยาอัตราส่วนของปริมาณน้ำต่อก๊าซมีเทน และยั
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Hughes, Bryan, Avinash Vaidheeswaran, Mingming Ge, et al. Data From Experiments on Bubbling Fluidization of Zeolite in a Rectangular Bubbling Fluidized Bed. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2475760.

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Greenwell, Donald L., Rajiv K. Kalia, and Priya Vashishta. Embedded Microclusters in Zeolites and Cluster Beam Sputtering -- Simulation on Parallel Computers. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/8183.

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อัสสะบำรุงรัตน์, สุทธิชัย. การใช้ผลิตภัณฑ์ที่เหลือจากการกลั่นแอลกอฮอล์ที่ได้จากกระบวนการหมัก เพื่อนำมาทำเป็นสารเพิ่มค่าออกเทนสำหรับน้ำมันเบนซิน. จุฬาลงกรณ์มหาวิทยาลัย, 2004. https://doi.org/10.58837/chula.res.2004.51.

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รายงานฉบับนี้เป็นรายงานความก้าวหน้าของการวิจัยครั้งที่สองของโครงการการนำผลิตภัณฑ์ที่เหลือจากการกลั่นแอลกอฮอล์ที่ได้จากการหมักเพื่อนำมาทำเป็นสารเพิ่มค่าออกเทนสำหรับน้ำมันเบนซิน รายงานฉบับนี้ประกอบด้วยสองส่วน ส่วนแรกเกี่ยวข้องกับการเลือกตัวเร่งปฏิกิริยาที่เหมาะสมเปรียบเทียบกันในการผลิตสารประกอบ เทอร์เชียรี่ เอมิว เอทิล อีเทอร์ (Tertiary Amyl Ethyl Ether, TAEE) โดยตรงจากสารประกอบเทอร์เชียรี่ เอมิว แอลกอฮอล์ (Tertiary amyl alcohol, TAA) ทำปฏิกิริยากับเอทานอล (EtOH) ในสภาวะที่เป็นของเหลว ตัวเร่งปฏิกิริยาที่ใช้เปรียบเทียบ ได้แก่ แอมเบอร์ลิสท์ 15 (Amberlyst 15) แอมเบอร์ลิสท์ 16 (Amberlyst 16) แอมเบอร
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อัสสะบำรุงรัตน์, สุทธิชัย. การใช้ผลิตภัณฑ์ที่เหลือจากการกลั่นแอลกอฮอล์ที่ได้จากกระบวนการหมัก เพื่อนำมาทำเป็นสารเพิ่มค่าออกเทนสำหรับน้ำมันเบนซีน. จุฬาลงกรณ์มหาวิทยาลัย, 2006. https://doi.org/10.58837/chula.res.2006.63.

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รายงานฉบับนี้เป็นรายงานฉบับสมบูรณ์ของโครงการการนำผลิตภัณฑ์ที่เหลือจากการกลั่นแอลกอฮอล์ที่ได้จากการหมักเพื่อนำมาผลิตสารเพิ่มค่าออกเทนสำหรับน้ำมันเบนซิน ซึ่งได้รับทุนสนับสนุนจากการสนับสนุนยุทธศาสตร์การพัฒนาศักยภาพการแข่งขันอุตสาหกรรม กลุ่ม Basic and Strategic Industry รายงานนี้ได้แบ่งเป็นสามส่วนหลัก ในส่วนแรกเกี่ยวข้องกับการคัดเลือกตัวเร่งปฏิกิริยาที่เหมาะสมในการผลิตสารเทอร์เชียรี่ เอมิล เอทิล อีเทอร์ (Tertiary Amyl Ethyl Ether, TAEE) โดยตรงจากสารเทอร์เชียรี่ เอมิล แอลกอฮอล์ (Tertiary amyl alcohol, TAA) ทำปฏิกิริยากับเอทานอล (EtOH) ในสภาวะที่เป็นของเหลว ตัวเร่งปฏิกิริยาที่ใช้ในการคัดเลือก ได้แก่
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Vashishta, P., R. K. Kalia, and D. L. Greenwell. Embedded microclusters in zeolites and cluster beam sputtering -- simulation on parallel computers. Progress report, September 1993--September 1994. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10186983.

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Vashishta, P., R. K. Kalia, and D. Greenwell. Embedded microclusters in zeolites and cluster beam sputtering: Simulation on parallel computers. Annual progress report, September 15, 1992--September 14, 1993. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10184447.

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Jongpatiwut, Siriporn, Somchai Osuwan, Thirasak Rirksomboon, and ชมพูนุท พึ่งกลั่น. n-alkane aromatization over modified Pt supported KL zeolites. Chulalongkorn University, 2013. https://doi.org/10.58837/chula.res.2013.94.

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From previous studies, Sn-promoted Pt/KL prepared by vapor-phase co-impregnation exhibited high stability and selectivity to C8-aromatics for n-octane aromatization. Although the Pt/KL has many benefits, one of the serious drawbacks is its sensitivity to sulfur poisoning. Based on previous investigations, the addition of rare earth elements (RE; e.g. Tm, Ce, and Dy) into Pt/KL could improve sulfur tolerance of the catalysts. In this work, the sulfur resistance of PtSn/KL and RE-promoted PtSn/KL has been studied. PtSnRE/KL catalysts with Pt:Sn:RE ratio of 1:1:0.15 were prepared by sequential RE
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