Academic literature on the topic 'Beidellite'

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Journal articles on the topic "Beidellite"

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Yamada, H., H. Nakazawa, K. Yoshioka, and T. Fujita. "Smectites in the montmorillonite-beidellite series." Clay Minerals 26, no. 3 (1991): 359–69. http://dx.doi.org/10.1180/claymin.1991.026.3.05.

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AbstractSmectites in the montmorillonite-beidellite pseudo-binary system were synthesized from glass at the hydrothermal conditions 100 MPa and 250–500°C. Products were analysed by X-ray powder diffraction for randomly oriented and glycolated samples, and also according to the Greene-Kelly test. A new mixed-layer mineral consisting of regularly interstratified montmorillonite-beidellite was found below 400°C for M50B50 composition, where M and B denote the compositions of ideal Na-montmorillonite and Na-beidellite, respectively. Montmorillonite was obtained as a single phase below 375°C in the
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Cuadros, J. "Kaolinite/Montmorillonite Resembles Beidellite." Clays and Clay Minerals 42, no. 5 (1994): 643–51. http://dx.doi.org/10.1346/ccmn.1994.0420517.

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Garfinkel-Shweky, D., and S. Yariv. "Metachromasy in clay dye systems: the adsorption of acridine orange by Na-beidellite." Clay Minerals 34, no. 3 (1999): 459–67. http://dx.doi.org/10.1180/000985599546361.

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AbstractThe adsorption of the metachromic dye acridine orange (AO) by Na-beidellite was investigated by visible spectroscopy. Different types of clay-AO association were identified from the appearance and location of absorption bands α or β. The colloidal properties were determined from curves of the absorbance vs. the degree of saturation. Three regions were identified in the absorbance curve. In the first region beidellite is peptized with small amounts of AO and the dye penetrates into the interlayer space where it undergoes metachromasy due to π interactions between the aromatic entity and
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Scholtzová, Eva, L’uboš Jankovič, and Daniel Tunega. "Stability of Tetrabutylphosphonium Beidellite Organoclay." Journal of Physical Chemistry C 122, no. 15 (2018): 8380–89. http://dx.doi.org/10.1021/acs.jpcc.8b01042.

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Kloprogge, J. Theo. "Characterization of Synthetic Na-Beidellite." Clays and Clay Minerals 38, no. 4 (1990): 409–14. http://dx.doi.org/10.1346/ccmn.1990.0380410.

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Kloprogge, J. T. "Hydrothermal Synthesis of Ammonium-Beidellite." Clays and Clay Minerals 43, no. 1 (1995): 135–37. http://dx.doi.org/10.1346/ccmn.1995.0430117.

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Grauby, Olivier, Sabine Petit, Alain Decarreau, and Alain Baronnet. "The beidellite-saponite series: an experimental approach." European Journal of Mineralogy 5, no. 4 (1993): 623–36. http://dx.doi.org/10.1127/ejm/5/4/0623.

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Santos, H. S., A. M. Cesio, M. Gauna, V. F. Justo, and C. Volzone. "Structural changes of Cr-beidellite treated up to 1350 °C in oxygen or nitrogen atmospheres." Cerâmica 64, no. 369 (2018): 64–68. http://dx.doi.org/10.1590/0366-69132018643692215.

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Abstract Beidellite clay mineral after intercalation of OH-Cr(III) species were thermally analyzed up to 1350 °C in oxygen and nitrogen atmospheres. OH-Cr-beidellite can be used as a pillared clay precursor for catalysis or as adsorbent applications. However, in this paper beidellite enriched in chromium were analyzed at different thermal treatments up to high temperature for evaluating structural changes for possible future ceramic applications. The structural changes were followed by thermal analysis and X-ray diffraction. The thermal treatment of OH-Cr-beidellite in oxygen and nitrogen atmo
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Martin, F., S. Petit, A. Decarreau, et al. "Ga/Al substitutions in synthetic kaolinites and smectites." Clay Minerals 33, no. 2 (1998): 231–41. http://dx.doi.org/10.1180/000985598545598.

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AbstractThe Ga for A1 substitution in kaolinites and smectites was studied using clay synthesis from initial gels having an (Al + Ga)/Si ratio of kaolinites andMGa = Ga/(Ga + A1) ratio ranging from 0 to 1. Only kaolinite was obtained for MGa in the range 0-0.10. For higher MGa, synthesized clays were both kaolinite and beidellite, or pure beidellites. The evolution of b cell parameters, and the appearance of avAI-OH-Ga absorption band at 3600 cm-1in FFIR spectra, proves the progressive substitution of AI by Ga in kaolinite. The low substitution of AI by Ga in kaolinite can be correlated with t
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Cheikh, Dorsaf, Fátima García-Villén, Hatem Majdoub, César Viseras, and Memia Benna Zayani. "Chitosan/beidellite nanocomposite as diclofenac carrier." International Journal of Biological Macromolecules 126 (April 2019): 44–53. http://dx.doi.org/10.1016/j.ijbiomac.2018.12.205.

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Dissertations / Theses on the topic "Beidellite"

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Ait, Aghzzaf Ahmed. "Argiles en tant que réservoirs d'inhibiteurs de corrosion métallique issus de ressources naturelles dans des peintures pour la protection des métaux." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0049/document.

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Ce travail a été consacré au développement de nouveaux microréservoirs d'inhibiteurs de corrosion à base de ressources naturelles minérales (les argiles marocaines de types beidellite et palygorskite), et organiques (le chitosane et l'acide heptanoïque) pour être utilisés en tant que charges anticorrosion dans les peintures. Dans les réservoirs de type beidellite, le stockage des inhibiteurs de corrosion a été réalisé soit en saturant les espaces interfoliaires par des cations inhibiteurs de corrosion tels que Ca2+ ou Ce3+, soit en modifiant les charges des feuillets argileux par intercalation
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Robin, Valentin. "Effet de la cristallochimie des minéraux argileux gonflants sur les propriétés d'échange cationique et de dissolution. Implications dans un contexte de réhabilitation de sites miniers acidifiés." Thesis, Poitiers, 2015. http://www.theses.fr/2015POIT2296/document.

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Les smectites sont présentent dans de nombreux environnements de surface et sub-surface au sein desquels elles jouent un rôle prépondérant dans la mobilité des cations majeurs et traces de part leurs capacités d’adsorption. En contexte de réhabilitation de sites miniers exploités par lixiviation acide, ces smectites jouent un rôle dans la remontée du pH des eaux ainsi que dans l’immobilisation des éléments solubilisés. La nature des argiles présentent dans les sables non consolidés d’un aquifère exploité a donc été étudié. La présence de smectites du type beidellite (charge tétraédrique) a été
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Belibi, Pierre Celestin. "Elaboration et caractérisation des biofilms à base d'amidon de manioc renforcés par des charges minérales bi et tri-dimensionnelles." Thesis, Mulhouse, 2013. http://www.theses.fr/2013MULH6011/document.

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Des films composites et nanocomposites ont été élaborés par la méthode du casting à partir d’amidon natif de manioc. Ils ont été plastifiés par le glycérol et renforcés par des chargesminérales synthétiques de zéolithe Beta et de beidellite sodique. L’influence du type de charge, de l’état de la charge (lyophilisé ou non-lyophilisé ou séchage à l’air) ainsi que du taux de charge sur les propriétés mécaniques et barrières à la vapeur d’eau des films correspondants a été étudiée. Les valeurs de la solubilité dans l’eau et de la perméabilité à la vapeur d’eau des échantillons renforcés par des na
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Bouna, Lahcen. "Fonctionnalisation des minéraux argileux d'origine marocaine par TiO2 en vue de l'élimination par photocatalyse de micropolluants organiques des milieux aqueux." Thesis, Toulouse, INPT, 2012. http://www.theses.fr/2012INPT0143/document.

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Ce travail est consacré à l'élaboration par voie humide (pontage, solvothermale et colloïdale) de photocatalyseur TiO2 supporté sur trois types de minéraux argileux d'origine marocaine: la stévensite, la beidellite et la palygorskite, à leurs caractérisations et finalement à l'évaluation de leurs activités photocatalytiques vis-à-vis de l'élimination en milieu aqueux du colorant anionique l'Orange G (OG) très utilisé en industrie textile. La stévensite et la beidellite sont toutes les deux des smectites de types magnésien trioctaédrique et aluminifère dioctaédrique respectivement. En revanche,
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Brendlé, Jocelyne. "Elaboration de beidellites à piliers et d'hétérostructures préparéses à partir de beidellites synthétisées en milieu acide et fluoré et caractérisation." Mulhouse, 1996. http://www.theses.fr/1996MULH0458.

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Couto, Ricardo Alexandre Alves de. "Imobilização de complexos oxindolimínicos de cobre e zinco em argilas beidelitas." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-17082016-073759/.

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Estudos sobre a inserção de complexos oxindolimínicos de cobre(II) ou zinco(II) em argilas sintéticas beidelitas foram desenvolvidos visando obter carregadores inorgânicos capazes de promover a liberação modificada de metalofármacos. Investigações anteriores mostraram que os complexos estudados são promissores agentes antitumorais. São capazes de se ligar ao DNA, nas alças menor ou maior dependendo do ligante, causando danos oxidativos através da formação de espécies reativas de oxigênio (EROs), especialmente radicais hidroxil, no caso de complexos de cobre, que apresentam atividade redox. Tam
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Book chapters on the topic "Beidellite"

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Zaidi, Hachemi, Abdellah Bakhti, and Mohamed Larid. "Potassium Fixation in Beidellite Through Wetting and Drying." In Petrogenesis and Exploration of the Earth’s Interior. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01575-6_45.

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Poncelet, G., and A. Schutz. "Pillared Montmorillonite and Beidellite. Acidity and Catalytic Properties." In Chemical Reactions in Organic and Inorganic Constrained Systems. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4582-1_13.

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Ghrab, Sana, Samir Bouaziz, and Mourad Benzina. "Technological Characterization of Organo-beidellite for a New Insecticidal Formulation." 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_339.

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Martens, J. A., E. Benazzi, J. Brendlé, S. Lacombe, and R. Le Dred. "Catalytic performances of pillared beidellites compared to ultrastable Y zeolites in hydrocracking and hydroisomerisation reactions." In Studies in Surface Science and Catalysis. Elsevier, 2000. http://dx.doi.org/10.1016/s0167-2991(00)80972-6.

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