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Relevant bibliographies by topics / Faujasite X

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Academic literature on the topic 'Faujasite X'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Faujasite X"

1

Sutarno, Sutarno, and Arief Budyantoro. "SINTESIS DAN KARAKTERISASI FAUJASIT DARI ABU LAYANG : Kajian Pengaruh Waktu Sintesis Terhadap Stabilitas Termal Struktur Faujasit (Kinetics of Faujasite Formation from Fly Ash)." Sains & Teknologi 2, no. 2 (2019): 10. http://dx.doi.org/10.24123/jst.v2i2.2249.

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Faujasite was hydrothermally synthesized from fly ash at 100oC in alkaline solution by reflux with 5M HCl and fusion with NaOH (weight ratio of NaOH/fly ash = 1.2) pretreatments. Kinetics of faujasite formation was performed by variation of hydrothermal time (0-120 hours). Thermal stability of faujasite from fly ash was tested at 400-900oC and was compared with commercial zeolite Y. The solid products were characterized by X-ray diffraction method. Results showed that faujasite was formed through dissolution of fly ash components such as quartz, mullite and amorphous aluminosilicates (0-3 hour

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2

Sutarno, Sutarno, and Yateman Arryanto. "PHASE TRANSFORMATION IN THE FORMATION OF FAUJASITE FROM FLY ASH." Indonesian Journal of Chemistry 5, no. 3 (2010): 278–82. http://dx.doi.org/10.22146/ijc.21804.

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Faujasite was hydrothermally synthesized from fly ash at 100oC in alkaline solution by reflux with 5M HCl and fusion with NaOH pretreatments. Phase transformation in the formation of faujasite was performed by variation of NaOH/fly ash weight ratios and hydrothermal times. The solid products were characterized by X-ray diffraction method. Results showed that faujasite was formed through dissolution of fly ash components such as quartz, mullite and amorphous aluminosilicates followed by crystallization to form faujasite. Arranging the NaOH/fly ash weight ratio as well as hydrothermal time can s

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3

Sutarno, Sutarno, and Yateman Arryanto. "SYNTHESIS OF FAUJASITE WITH HIGH THERMAL STABILITY FROM FLY ASH." Indonesian Journal of Chemistry 4, no. 1 (2010): 26–32. http://dx.doi.org/10.22146/ijc.21870.

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Faujasite was hydrothermally synthesized from fly ash at 100oC in alkaline solution by reflux with various concentration of HCl and fusion with NaOH (weight ratio of NaOH/fly ash = 1.2) pretreatments. Thermal stability of faujasite from fly ash was tested at 400-900oC and was compared with commercial zeolite Y. The solid products were characterized by X-ray diffraction method, chemical analysis and nitrogen adsorption (BET). Results showed that synthesis of faujasite from fly ash via fusion pretreatment with NaOH has resulted faujasite selectively, however, the faujasite obtained still showed

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4

Capa-Cobos, Luis Fernando, Ximena Jaramillo-Fierro, and Silvia González. "Computational Study of the Adsorption of Phosphates as Wastewater Pollutant Molecules on Faujasites." Processes 9, no. 10 (2021): 1821. http://dx.doi.org/10.3390/pr9101821.

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The adsorption of sodium dihydrogen phosphate (NaH2PO4) onto X- and Y-type faujasite zeolites was computationally studied using the Density Functional Theory (DFT) method. The structures were modeled using the Materials Studio software. The Si/Al ratios for the X- and Y-type zeolite models were 1.2 and 2.5, respectively. The central pore of the zeolite provided a more favorable coordination for adsorbing NaH2PO4. Full molecular optimization and adsorption energy calculations were performed using the VASP code. The adsorption was more effective on zeolite Y, with an adsorption energy of 161 kJ/

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5

Mauer, Volker, Christian Bläker, Christoph Pasel, and Dieter Bathen. "Energetic Characterization of Faujasite Zeolites Using a Sensor Gas Calorimeter." Catalysts 11, no. 1 (2021): 98. http://dx.doi.org/10.3390/catal11010098.

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In addition to the adsorption mechanism, the heat released during exothermic adsorption influences the chemical reactions that follow during heterogeneous catalysis. Both steps depend on the structure and surface chemistry of the catalyst. An example of a typical catalyst is the faujasite zeolite. For faujasite zeolites, the influence of the Si/Al ratio and the number of Na+ and Ca2+ cations on the heat of adsorption was therefore investigated in a systematic study. A comparison between a NaX (Sodium type X faujasite) and a NaY (Sodium type Y faujasite) zeolite reveals that a higher Si/Al rati

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6

Sousa, Paulla B. F., Lindiane Bieseki, and Sibele B. C. Pergher. "Seed-Assisted Crystallization in the Hydrothermal Synthesis of FAU Zeolite from Acid-Treated Residue Glass Powder." Materials 18, no. 7 (2025): 1393. https://doi.org/10.3390/ma18071393.

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A simple and low-cost synthesis assisted by seed crystals has been proposed to convert residual colorless glass powder into a Na-X zeolite. For this purpose, the optimal parameters for acid leaching of glass powder were studied to remove impurities that could interfere with the crystallization process. Then, the hydrothermal syntheses were supported by Na-X seed crystals (0% to 5%, wt.) to induce the growth of zeolite X, evaluating the crystallization time (12 h to 48 h) and the variation of the silicon source (acid-treated and untreated residues). The formation of the faujasite as the main ph

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7

Setthaya, Naruemon, Chitsophin Pindi, Prinya Chindaprasirt, and Kedsarin Pimraksa. "Synthesis of Faujasite and Analcime Using of Rice Husk Ash and Metakaolin." Advanced Materials Research 770 (September 2013): 209–12. http://dx.doi.org/10.4028/www.scientific.net/amr.770.209.

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Faujasite and analcime were synthesized by two-step process via hydrothermal method using the rice husk ash and metakaolin as starting materials. In the first step, the raw materials were prepared using the SiO2/Al2O3molar ratio of 4 and pretreatment with NaOH solution under various stirring conditions. The suspension was subjected to hydrothermal treatment at various reacting time and temperature in second step. The mineralogy, morphology, specific surface area and cation exchange capacity of the synthesized products were investigated using X-ray diffraction, Scanning electron microscopy, N2a

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8

Guan, Liuliu, Zhuangzhuang Wang, and Duyou Lu. "Evolution of Zeolite Crystals in Self-Supporting Faujasite Blocks: Effects of Hydrothermal Conditions." Materials 12, no. 12 (2019): 1965. http://dx.doi.org/10.3390/ma12121965.

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In order to prepare self-supporting faujasite (FAU) zeolite, a self-supporting zeolite block was synthesized in situ by hydrothermal treatment of a metakaolin base geopolymer. The effects of hydrothermal conditions such as hydrothermal alkalinity, temperature and time on the phase composition, microstructure and mechanical strength of the hydrothermal samples were investigated and evidenced by a series of characterization methods such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmet-Teller (BET). The results showed that a self-supporting faujasite block could

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9

Schulz-Ekloff, G., and N. Jaeger. "Generation of bimodal metal dispersion in faujasite X." Catalysis Today 3, no. 5 (1988): 459–66. http://dx.doi.org/10.1016/0920-5861(88)87029-9.

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10

Khabzina, Y., C. Laroche, C. Pagis, and D. Farrusseng. "Monovalent and bivalent cations exchange isotherms for faujasites X and Y." Physical Chemistry Chemical Physics 19, no. 26 (2017): 17242–49. http://dx.doi.org/10.1039/c7cp02051a.

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This study addresses the modeling of exchange isotherms for faujasite-type zeolites X and Y with K<sup>+</sup>, Cs<sup>+</sup>, Ca<sup>2+</sup> and Ba<sup>2+</sup> cations based on a large experimental dataset obtained under operating conditions of 0.5 N total normality and an exchange temperature of 80 °C.

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Dissertations / Theses on the topic "Faujasite X"

1

DeCoste, Jared B. "Nucleophilic chemistry of faujasite X zeolites with isocyanates, organosulfur esters, and epoxides." Diss., Online access via UMI:, 2009.

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2

Motta, Ingrid Lopes. "Propriedades de zeólitas x formadas por partículas micro- e nanométricas contendo cátions alquilamônio lineares." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/8848.

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3

Kowenje, Chrispin B. O. "Spectroscopic characterization of the metal cation siting and the adsorbate-cation interactions in Cu (II) and Co (II) exchanged faujasite-X zeolite." Diss., Online access via UMI:, 2006.

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4

Kanyi, Charles Wairagu. "Chemistry of the Faujasite zeolites (X, Y) with alkyl halides and other systems and the effects of sodium treatment on this chemistry." Diss., Online access via UMI:, 2007.

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5

Mve, Mfoumou Charly. "Piégeage du dioxyde de carbone sur solides à base de zéolithe faujasite X : adsorption seul, en mélange binaire et/ou en présence d'eau ; étude en thermodésorption." Thesis, Poitiers, 2012. http://www.theses.fr/2012POIT2301/document.

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Le réchauffement de la planète, en partie dû à l'augmentation des teneurs du dioxyde de carbone (CO2) dans l'atmosphère, pousse les scientifiques à trouver des méthodes et des techniques performantes pour limiter les émissions de ce gaz. L'objectif de ce travail est d'améliorer le piégeage du CO2 sur des adsorbants à base de zéolithe et d'optimiser la désorption dans une gamme de température peu élevée (35 – 350°C). Afin d'apprécier l'influence de la méthode de synthèse, des échanges cationiques (K+, Li+, Mg2+, Ca2+ et Ba2+), des mélanges mécaniques (MgO), et des imprégnations (Mg et Ca) ont é

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6

Groust, Jean-François. "Rôle de la paire acide-base vis-à-vis de la réactivité de faujasites alcalines Y, X et LSX de basicité variable : réaction modèle de conversion du méthylbutynol et application environnementale en oxydation du dichlorométhane." Paris 6, 2007. http://www.theses.fr/2007PA066441.

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Ce travail porte sur l’influence de la paire acide-base de Lewis des faujasites Y, X et LSX échangées avec différents cations alcalins, vis à vis de leur réactivité en tant que catalyseurs basiques. En première approche, la réaction modèle de décomposition du méthylbutynol est utilisée pour évaluer leur basicité, menant à la décomposition de cette molécule en acétone et acétylène. Un suivi par spectroscopie infrarouge operando permet de décrire le rôle des paires acide-base et de mettre en évidence l’influence majeure du cation alcalin en tant qu’acide de Lewis lors d’une réaction successive d

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7

Doolittle, John William Jr. "Synthesis of microporous faujasitic zincophosphates in novel environments." The Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=osu1116983708.

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8

Mallmann, Aimery de. "Modifications du benzène par adsorption sur des faujasites échangées par des ions alcalins." Paris 6, 1986. http://www.theses.fr/1986PA066347.

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L'évolution du spectre infrarouge du benzène adsorbe sur des faujasites est suivie en fonction de la composition chimique des adsorbants (zéolites désaluminées, zéolite y ou x, zéolites modifiées par des ions Na, Rb, etc) et de la quantité de benzène adsorbé. On note que 4 formes de benzène ont été mises en évidence, dont l'une est faiblement fixée sur les solides.

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9

Tournier, Hélène. "Etude expérimentale et modélisation des équilibres d'adsorption compétitive d'aromatiques en phase liquide sur des faujasites X et Y." Dijon, 2000. http://www.theses.fr/2000DIJOS069.

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La séparation du paraxylène des isomères en c 8 est réalisée industriellement par adsorption sélective sur des matériaux zéolitiques. L'objectif de ce travail consiste à étudier les équilibres d'adsorption compétitive des c 8 et c 1 0 aromatiques sur des zéolithes x et y. Les données expérimentales ont été obtenues sur un appareillage entièrement automatise dans une large gamme de température (50\c-250\c), qui de suivre l'évolution de la composition de la phase liquide. La composition de la phase adsorbée à l'équilibre est obtenue par bilan matière grâce à l'utilisation d'un étalon interne. De

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10

Fox, Jack David. "Infrared vibrational spectra of tert-butyl halides in dehydrated NA-X and low-aluminum H-Y faujasites vibrational excitation exchange and other effects of guest-host interactions /." Diss., Online access via UMI:, 2006.

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Book chapters on the topic "Faujasite X"

1

Burzo, E. "Crystal structure of I-X and I-Y faujasites." In Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49337-3_38.

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2

Burzo, E. "Crystal structure of V-X, V-Y faujasties." In Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49337-3_19.

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Burzo, E. "Extraframework cation distribution in Mg-X and Mg-Y faujasites." In Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49337-3_11.

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Burzo, E. "Extraframework cation distribution in Ca-X and Ca-Y faujasites." In Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49337-3_12.

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Burzo, E. "Extraframework cation distribution in Cd-X and Cd-Y faujasites." In Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49337-3_15.

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6

Burzo, E. "Extraframework cation distribution in Zn-X and Zn-Y faujasites." In Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49337-3_16.

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7

Burzo, E. "Extraframework cation distribution in Pb-X and Pb-Y faujasites." In Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49337-3_17.

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8

Burzo, E. "Extraframework cation distribution in Ti-X and Ti-Y faujasites." In Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49337-3_18.

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9

Burzo, E. "Extraframework cation distribution in Cr-X and Cr-Y faujasites." In Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49337-3_20.

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10

Burzo, E. "Extraframework cation distribution in Mn-X and Mn-Y faujasites." In Magnetic Properties of Non-Metallic Inorganic Compounds Based on Transition Elements. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49337-3_21.

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Reports on the topic "Faujasite X"

1

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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