Relevant bibliographies by topics / Silicalite

Academic literature on the topic 'Silicalite'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 September 2023

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Journal articles on the topic "Silicalite"

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He, Qiuping, Wei Chen, Pengfei Wang, and Xiaoming Dou. "Silicalite-1/PDMS Hybrid Membranes on Porous PVDF Supports: Preparation, Structure and Pervaporation Separation of Dichlorobenzene Isomers." Polymers 14, no. 9 (April 21, 2022): 1680. http://dx.doi.org/10.3390/polym14091680.

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Separation of dichlorobenzene (DCB) isomers with high purity by time− and energy−saving methods from their mixtures is still a great challenge in the fine chemical industry. Herein, silicalite-1 zeolites/polydimethylsiloxane (PDMS) hybrid membranes (silicalite-1/PDMS) have been successfully fabricated on the porous polyvinylidene fluoride (PVDF) supports to first investigate the pervaporation separation properties of DCB isomers. The morphology and structure of the silicalite-1 zeolites and the silicalite-1/PDMS/PVDF hybrid membranes were characterized by XRD, FTIR, SEM and BET. The results showed that the active silicalite-1/PDMS layers were dense and continuous without any longitudinal cracks and other defects with the silicalite-1 zeolites content no more than 10%. When the silicalite-1 zeolites content exceeded 10%, the surfaces of the active silicalite-1/PDMS layers became rougher, and silicalite-1 zeolites aggregated to form pile pores. The pervaporation experiments both in single-isomer and binary−isomer systems for the separation of DCB isomers was further carried out at 60 °C. The results showed that the silicalite-1/PDMS/PVDF hybrid membranes with 10% silicalite-1 zeolites content had better DCB selective separation performance than the silicalite-1/α−Al2O3 membranes prepared by template method. The permeate fluxes of the DCB isomers increased in the order of m−DCB < o−DCB < p−DCB both in single-isomer and binary-isomers solutions for the silicalite-1/PDMS/PVDF hybrid membranes. The separation factor of the silicalite-1/PDMS/PVDF hybrid membranes for p/o−DCB was 2.9 and for p/m−DCB was 4.6 in binary system. The permeate fluxes of the silicalite-1/PDMS/PVDF hybrid membranes for p−DCB in p/o−DCB and p/m−DCB binary−isomers solutions were 126.2 g∙m−2∙h−1 and 104.3 g∙m−2∙h−1, respectively. The thickness−normalized pervaporation separation index in p/o−DCB binary−isomers solutions was 4.20 μm∙kg∙m−2∙h−1 and in p/m−DCB binary−isomers solutions was 6.57 μm∙kg∙m−2∙h−1. The results demonstrated that the silicalite-1/PDMS/PVDF hybrid membranes had great potential for pervaporation separation of DCB from their mixtures.
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Thongkam, Montree, Somsak Woramongkolchai, Sairoong Saowsupa, and Pesak Rungrojchaipon. "A Facile Method to Synthesize b-Oriented Silicalite-1 Thin Film." Membranes 12, no. 5 (May 13, 2022): 520. http://dx.doi.org/10.3390/membranes12050520.

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Silicalite-1 thin film was prepared with the following batch composition—3TPAOH:25TEOS:1450H2O:100EtOH—and synthesized using the hydrothermal technique. Silicalite-1 colloidal crystals were successfully coated on the surface of the silica substrate by the dip-coating method. The investigation of silicalite-1 thin film with organic structure-directing agents (SDA), using a seeding technique with various colloidal seed concentrations, number of dip-coating steps, and crystallization time, were systematically discussed and obtained interesting results. Silicalite-1 powder and Silicalite-1 membrane, the patterns of which showed a unique characteristic crystallography of MFI topology, were characterized by XRD, which indicated the preferred orientation along the b-axis perpendicular to the substrate surface. The morphology and crystal size aspect of Silicalite-1 were also examined by a scanning electron microscope (SEM).
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Marthosa, Sutida, Wirote Youravong, Chaiwat Kongmanklang, and Watsa Khongnakorn. "Applications and characterization of silicalite-1/polydimethylsiloxane composite membranes for the pervaporation of a model solution and fermentation broth." Journal of Polymer Engineering 39, no. 2 (February 25, 2019): 152–60. http://dx.doi.org/10.1515/polyeng-2018-0138.

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AbstractEthanol recovery via pervaporation is greatly influenced by membrane separation performance, which can be enhanced by adding hydrophobic fillers such as silicalite-1. Silicalite-1 was prepared by controlling the gel molar composition in hydrothermal synthesis, and it was incorporated into a polydimethylsiloxane (PDMS) membrane on Teflon. The silicalite-1 Si-O-Si structures interacted with the -Si(CH3)2-O- backbone of the PDMS chain. The thermal gravimetric analysis results showed that the silicalite-1 improved the thermal stability and raised the initial decomposition temperature from 405°C to 450–470°C. Increasing silicalite-1 content from 5 to 20 wt% enhanced the relative ethanol/water swelling from 1.33% to 1.52% and advanced the contact angle from 112.6° to 138.6°. Addition of 20 wt% silicalite-1 improved the separation factor in broth from 2.55 to 5.56. When using 20 wt% silicalite-1/PDMS membrane and replacing the ethanol solution with broth, fouling reduced the flux from 597 to 482 g m−2h−1, but the broth composite increased the separation factor from 3.14 to 5.56. The overall pervaporation separation index with a santol broth of the 20 wt% silicalite-1/PDMS and commercial PDMS membranes were 2199 and 2110. The prepared membranes had similar overall performance as a commercial membrane.
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Zieliński, Michał, Ewa Janiszewska, Adrianna Drewniak, and Mariusz Pietrowski. "Methanation of CO2 over Ruthenium Supported on Alkali-Modified Silicalite-1 Catalysts." Molecules 28, no. 17 (August 31, 2023): 6376. http://dx.doi.org/10.3390/molecules28176376.

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This study focuses on the catalytic properties of ruthenium catalysts supported on modified silicalite-1 (with an MFI structure). By post-synthesis modification of silicalite-1 with solutions of alkali metal compound, a novel and cost-effective method was discovered to create basic centers on the surface of silicalite-1 supports. The modification not only affected the basicity of the supports but also their porosity. The influence of the type of alkali solution (KOH or NaOH) and its concentration (0.1 M or 1.0 M) on both the basicity and porosity was investigated. The modified silicalite-1 materials were employed as supports for ruthenium catalysts (1 wt.% Ru) and evaluated for their CO2 methanation activity. The results were compared with the hydrogenation performance of ruthenium catalysts supported on unmodified silicalite-1. Characterization of the supports and catalysts was conducted using techniques such as BET, XRD, FT-IR, ICP-OES, TPR-H2, H2 chemisorption, TPD-CO2, SEM, and TEM. Remarkably, the catalytic activity of ruthenium supported on silicalite-1 treated with 1.0 M NaOH (exhibiting selectivity toward methane above 90% in a reaction temperature range of 250–450 °C) outperformed both unmodified and KOH-modified silicalite-1 supported Ru catalysts.
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Sakai, Motomu, Yukichi Sasaki, Takuya Kaneko, and Masahiko Matsukata. "Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part I, Pore Volume and Effective Pore Size." Membranes 11, no. 6 (May 24, 2021): 382. http://dx.doi.org/10.3390/membranes11060382.

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The micropore volumes and effective pore sizes of two types of silicalite-1 membranes were compared with those of a typical silicalite-1 powder. The silicalite-1 membrane with fewer grain boundaries in the membrane layer showed similar micropore volume and effective pores size to those of the silicalite-1 powder. In contrast, when the silicalite-1 membrane contained many grain boundaries, relatively small micropore volume and effective pore size were observed, suggesting that narrowing and obstruction of the micropore would occur along grain boundaries due to the disconnection of the zeolite pore. The silicalite-1 membrane with fewer grain boundaries exhibited relatively high permeation properties for C6-C8 hydrocarbons. There was an over 50-fold difference in benzene permeance between these two types of membranes. We concluded that it is important to reduce grain boundaries and improve pore-connectivity to develop an effective preparation method for obtaining a highly permeable membrane.
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Lu, Shih-Yuan, Hsiang-Yuan Huang, and Kwen-Hua Wu. "Silicalite/poly(dimethylsiloxane) nanocomposite pervaporation membranes for acetic acid/water separation." Journal of Materials Research 16, no. 11 (November 2001): 3053–59. http://dx.doi.org/10.1557/jmr.2001.0422.

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Composite separation membranes of poly(dimethylsiloxane) (PDMS) containing well-dispersed silicalite particles of 50 nm were successfully prepared and applied to the preferential pervaporation of acetic acid over water. The nanocomposite membranes showed improvement on both separation factor and permeation flux for the pervaporation process, as compared to plain PDMS membranes and composite membranes containing silicalite particles of 5 μm. The improvement can be attributed to higher readily accessible specific surface area and higher sorption selectivity toward acetic acid of the nano-size silicalite particles. Improvement on membrane thermal stability was also acquired through incorporation of nano-size silicalite particles.
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Deng, Kang, Liangjun Xiao, Junming Xie, Shunheng Tu, and Yongfeng Li. "Novel Pd-loaded self-standing hierarchical pore structure silicalite for low temperature toluene catalytic combustion." Journal of Physics: Conference Series 2342, no. 1 (September 1, 2022): 012001. http://dx.doi.org/10.1088/1742-6596/2342/1/012001.

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Abstract A novel Pd-loaded self-standing hierarchical pore structure silicalite were obtained by a handy polymer form board assisted hydrothermal method. The selected foam-shaped form board of a polyurethane (PU) foam monolith was regarded as the precursor of the self-standing hierarchical pore structure silicalite. The fruiting silicalite can steadily hold unique macroporous network structure and shape of the anterior original PU foam board . By means of the BET and BJH pore size distribution tests, the as-synthesis silicalite demonstrated hierarchical pore structure. The method of in-situ reduction was wielded to load palladium on the silicalite, and the catalytic performance of the catalyst to decompose toluene was tested at multiple burning temperatures. The experimental results revealed that the Pd-loaded catalyst can effectively decompose toluene at nearly 230°C, realizing low-temperature catalytic combustion of toluene.
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Chen, Hong Liang, Ji Song Yang, Yan Wang, Hui Ying Li, Xin Xin Li, and Wei Shen Yang. "Preparation of Silicalite-1 Membranes with Seeding Method and its Separation Performance for Low Ethanol/Water Mixture." Advanced Materials Research 807-809 (September 2013): 591–95. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.591.

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High performance silicalite-1 membranes were successfully synthesized on silica tubes by seeding method after filling the tubes with water and glycerol mixtures. After seeding the silica tubes with 200 nm seeds, all the silicalite-1 membranes show acceptable separation performance towards ethanol/water mixture after 4-12 h hydrothermal synthesis, and the highest flux of membrane with 8 h hydrothermal synthesis reaches about 0.98 kg/m2.h and the separation factor reaches about 60 towards 3 wt.% ethanol/water mixture. This result shows that the as-synthesized silicalite-1 membrane can concentrate the ethanol from 3% to about 65%, and the ethanol can be obtained over 600 g/m2.h by using the silicalite-1 membrane, which shows that seeding method and suitable control of synthesis conditions is possible for preparing high-performance silicalite-1 membranes.
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Cheng, Yue, Shun Long Pan, and Yuan Zhou. "Study on Magnetic Mn0.2Co0.8Fe2O4/Silicalite-2 Catalyst and its Electro-Catalytic Property." Advanced Materials Research 669 (March 2013): 30–33. http://dx.doi.org/10.4028/www.scientific.net/amr.669.30.

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Silicalite-2 zeolite was hydrothermally synthesized and Mn0.2Co0.8Fe2O4 magnetic nano-particle based on the Silicalite-2 zeolite carrier was prepared by a coprecipitation-impregnation method. The morphologies and microstructures of synthesized samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM). The heterogeneous catalytic oxidation electrolysis system of Mn0.2Co0.8Fe2O4/silicalite-2 was built by dispersing the catalysts in glass reactor for treating cationic brilliant red X-5GN wastewater. The SEM images showed that the structure of silicalite-2 zeolite remained its original after the introduction of Mn0.2Co0.8Fe2O4 magnetic particle. The XRD patterns revealed that Mn0.2Co0.8Fe2O4 oxides could not be observed on the surface of the silicalite-2 zeolite carrier. The experimental results showed that the dye wastewater with a satisfied decolorization rate (79.1%) was obtained when the initial pH was 6, the magnetic catalyst dosage was 0.4g/L, the electrolysis voltage was 2V, electrolytic time was 45min, respectively.
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Chen, Sheng, Guofeng Li, and Qipeng Yuan. "High adsorption capacity by creating a hydrophobic/hydrophilic layer on the surface of silicalite-1." RSC Advances 6, no. 101 (2016): 99509–13. http://dx.doi.org/10.1039/c6ra21257c.

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Dissertations / Theses on the topic "Silicalite"

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Halhead, Michael David. "Characterisation of silicalite and post synthesis modified silicalite using adsorption." Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/13894.

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Bibliography: leaves 89-96.
The study of adsorption on microporous materials such as zeolites is of tremendous scientific and industrial interest. The effective development and design of both equipment and processes is reliant on the availability of accurate information on the processes of adsorption in these materials. Zeolites, of the type studied in this thesis, are becoming increasingly important in a wide range of fields such as ion-exchange, purification, separations particularly of close boiling compounds and catalytic processes. The work presented had two primary objectives. The first was the design and construction of a reliable apparatus for the measurement of adsorption isotherms. This adsorption apparatus was based upon the gravimetric technique due to the reliability, high sensitivity and the widespread use of this type of technique. The system constructed was a flow system as opposed to the more commonly used vacuum system. The choice of a flow gravimetric system introduces a number of advantages: * The effect of the heat of adsorption is reduced * The system is better able to replicate industrial conditions * The gravimetric technique is simple to use .
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Hargreaves, S. M. "Hydrocarbon adsorption in silicalite : experimental and numerical studies." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603712.

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The work contained in this thesis addresses the single and multicomponent adsorption of hydrocarbons in silicalite. Both experimental and numerical work is presented. Experimental measurements are made using a volumetric technique and many equilibrium adsorption studies are reported for the first time. Multicomponent adsorption studies have revealed several novel adsorption phenomena. Intermolecular interaction within silicalite has been probed using deuterium nuclear magnetic resonance (2H NMR) experiments. For the first time data are presented for both single and multicomponent adsorbates within the structure and the effect of co-adsorption upon molecular microdynamics is investigated. Incorporating 2H NMR data obtained with the network model for the adsorbent in a numerical simulation known as Monte Carlo Lattice Dynamics, has enabled equilibrium predictions to be made for single and multicomponent adsorption. On comparison with the experimental data obtained the results achieved by Monte Carlo Lattice Dynamics are very good and demonstrate the strength of the simulation orthodoxy. Molecular mechanic simulations, together with data obtained from 2H NMR and volumetric studies have also been used to probe the behaviour of the external surface of silicalite in the study of adsorbate uptake kinetics. Results indicate that a surface-moderated insertion can affect the uptake of a component from the gas phase and hence affect the gross adsorption uptake properties of the material. Binary component studies have also been performed in which the interplay between adsorbate surface mobility and molecular desorption rates can affect a separation between components.
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Sowerby, Beverley. "Drying of organic vapours by adsorption." Thesis, University of Bath, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284567.

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Flynn, Tracey Karen. "Some sorption and salt occlusion properties of silicalite-1." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/14868.

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Boulicaut, Ludovic. "Sorption and diffusion in silicalite crystals studied by HPLC." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq23781.pdf.

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Van-Den-Begin, Neil Graham. "A study on diffusion of hydrocarbons in silicalite-1." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46591.

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Simon, Jean-Marc, Nicole Floquet, Jean-Pierre Bellata, and Guy Weber. "Commensurate diffusion effects of n-heptane in silicalite-1." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-185690.

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Carter, David, Boguslaw Kruczek, and F. Handan Tezel. "Application of Maxwell Stefan equations to characterize silicalite membranes." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-198056.

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Simon, Jean-Marc, Nicole Floquet, Jean-Pierre Bellata, and Guy Weber. "Commensurate diffusion effects of n-heptane in silicalite-1." Diffusion fundamentals 16 (2011) 73, S. 1-2, 2011. https://ul.qucosa.de/id/qucosa%3A13816.

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Carter, David, Boguslaw Kruczek, and F. Handan Tezel. "Application of Maxwell Stefan equations to characterize silicalite membranes." Diffusion fundamentals 24 (2015) 8, S. 1, 2015. https://ul.qucosa.de/id/qucosa%3A14522.

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Books on the topic "Silicalite"

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Grice, S. C. The diffusion of aromatic compounds in Silicalite 1. Manchester: UMIST, 1997.

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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 other environmental contaminants, selective catalytic reduction of nitrogen oxide, and decontamination of organic phosphorus and sulfur-containing compounds. It also examines the unique properties and reactivity of nanocrystalline zeolites and concludes by assessing their potential for future environmental applications.
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Book chapters on the topic "Silicalite"

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Sano, Tsuneji. "Silicalite Membrane." In Encyclopedia of Membranes, 1776–79. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_43.

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Sano, Tsuneji. "Silicalite Membrane." In Encyclopedia of Membranes, 1–3. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-40872-4_43-1.

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Tatsumi, T., Y. Hirasawa, and J. Tsuchiya. "Alkane Oxidation on Vanadium Silicalite Compared to Titanium Silicalite." In ACS Symposium Series, 374–83. Washington, DC: American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0638.ch028.

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Hayhurst, David T., Peter J. Melling, Wha Jung Kim, and William Bibbey. "Effect of Gravity on Silicalite Crystallization." In ACS Symposium Series, 233–43. Washington, DC: American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0398.ch017.

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Patil, M. D., and I. M. Lachman. "Methanol Conversion on Ceramic Honeycombs Coated with Silicalite." In ACS Symposium Series, 492–99. Washington, DC: American Chemical Society, 1988. http://dx.doi.org/10.1021/bk-1988-0368.ch031.

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Wang, Yuguo, Fred L. Tungate, George Kokotailo, and Burtron H. Davis. "Shape Selectivity for Alkane Dehydrocyclization with Pt Silicalite Catalysts." In ACS Symposium Series, 145–59. Washington, DC: American Chemical Society, 1999. http://dx.doi.org/10.1021/bk-2000-0738.ch010.

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Sulikowski, Bogdan, and Jacek Klinowski. "Hydrothermal Isomorphous Substitution of Boron in Zeolite ZSM-5/Silicalite." In ACS Symposium Series, 393–404. Washington, DC: American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0398.ch027.

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Yeong, Yin Fong, Ahmad Zuhairi Abdullah, Abdul Latif Ahmad, and Subhash Bhatia. "P-Xylene Separation from Ternary Xylene Mixture Over Silicalite-1 Membrane: Process Optimization." In Sustainable Membrane Technology for Energy, Water, and Environment, 299–307. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118190180.ch26.

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Talu, O., C. Guo, and D. Hayhurst. "A Two-Patch Heterogeneous Model with Surface Phase Transition for Benzene Adsorption on Silicalite." In Adsorption: Science and Technology, 53–62. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2263-1_4.

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Boccuti, M. R., K. M. Rao, A. Zecchina, G. Leofanti, and G. Petrini. "Spectroscopic Characterization of Silicalite and Titanium-Silicalite." In Structure and Reactivity of Surfaces, 133–44. Elsevier, 1989. http://dx.doi.org/10.1016/s0167-2991(08)60677-1.

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Conference papers on the topic "Silicalite"

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Tragl, Amadeus. "Surface Structure of Titanium Silicalite-1 Zeolites." In European Microscopy Congress 2020. Royal Microscopical Society, 2021. http://dx.doi.org/10.22443/rms.emc2020.1080.

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LEE, YONGTAEK, HYOSEONG AHN, YOONJIN OH, and HYEREON LEE. "SILICALITE-1 MEMBRANE FOR ORGANIC/WATER PERVAPORATION." In Proceedings of the 4th International Conference. WORLD SCIENTIFIC, 2004. http://dx.doi.org/10.1142/9789812702623_0122.

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Casal, H. L., and P. W. Yang. "Diffuse Reflectance Infrared Spectroscopic Studies Of Aromatic Ketones Included In Silicalite." In 1985 International Conference on Fourier and Computerized Infrared Spectroscopy, edited by David G. Cameron and Jeannette G. Grasselli. SPIE, 1985. http://dx.doi.org/10.1117/12.970917.

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Min, H., Y. Jeon, J. Sung, S. Seok, D. Kim, H. S. Kim, and K. B. Yoon. "Determination of absolute polar orientation of dyes incorporated into the channels of silicalite-1 films." In 2007 Conference on Lasers and Electro-Optics - Pacific Rim. IEEE, 2007. http://dx.doi.org/10.1109/cleopr.2007.4391326.

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Nguyen, Chi V., Danh C. Vu, Huong T. H. Nguyen, Tung P. Nguyen, and Quyen N. Tran. "Conversion of biomass-derived furfural into 1,5-pentadiol using effective Pt/silicalite-1 catalyst at mild condition." In 1ST VAN LANG INTERNATIONAL CONFERENCE ON HERITAGE AND TECHNOLOGY CONFERENCE PROCEEDING, 2021: VanLang-HeriTech, 2021. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0066461.

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Yang, Jianhua, Hui Lin Han, Bin Yuan, Liang Zhou, Chunlong Kong, and Jinqu Wang. "Preparation of silicalite-1 zeolite membrane by a two-stage-varying temperature synthesis for pervaporation separation of ethanol from water." In International Conference on Materials for Renewable Energy & Environment (ICMREE 2011). IEEE, 2011. http://dx.doi.org/10.1109/icmree.2011.5930829.

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Watcharasing, Sunisa, Chularat Wattanakit, Saros Salakhum, Anittha Prasertsab, and Prapoj Kiattikomol. "Synthesis of Zeolites from Production Sand Waste: The Circular Model for Oil and Gas Exploration and Production." In Offshore Technology Conference Asia. OTC, 2022. http://dx.doi.org/10.4043/31420-ms.

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Abstract This project aims to convert production sand waste from oil & gas exploration & production process to be high value silica-based product, Zeolites, and explore opportunities to lower amount of sand waste disposal to landfill. This is one key item in Circular Model for Oil & Gas Exploration & Production. Zeolites is a microporous crystalline aluminosilicate material, which possess a superior characteristic in terms of high surface area. Therefore, it is widely utilized in many industries such as adsorbent, ion exchange, and catalysts in oil refining and petrochemical industry. In this work, various types of zeolites were synthesized from PTTEP production sand waste, to prove concept of turning sand waste to high value-added product, called zeolite. In normal operation, sand waste was sent to dispose as landfill about 50 Ton/annual. To synthesize zeolite from sand waste, there are three main steps, which are 1) Sand Pretreatment, 2) Silica Extraction, and 3) Zeolite Synthesis. Firstly, sand waste from petroleum production were pretreated by water and acid washing. Then, nanosilica was extracted out from pretreated sand by boiling the pretreated sand in NaOH solution at temperature 150 C for 4 hrs, then precipitate them to get the nanosilica substances. It was further used as a reactant source for zeolite synthesis. In the last step, the extracted silica was reacted with Structure Directing Agent (SDA); zeolite template, under optimal condition of hydrothermal treatment process to obtain zeolites product. Zeolites synthesis from production sand waste was firstly initiated and successfully achieved in lab phase, to prove of concept for extracting silica source as a substance for zeolite synthesis. Various types of zeolites (Silicalite-1, ZSM-5, Faujasite (FAU), Mordenite, and Zeolite A) can be synthesized from PTTEP sand waste with synthesis yield 80%, 68%, 85%, 40%, and 81%, respectively. This indicates that silica source from production sand waste can be utilized as a reactant source for zeolites synthesis. The next phase of prototype unit is under design phase, to allow unit can be operated more versatile, and automatically run. From this novel technology, it is expected to reduce an amount of production sand waste disposal out from separator to landfill about 50 Ton/year. The synthesized zeolites from prototype phase will be further applied in many potential applications such as an adsorbent in wastewater treatment process, as catalyst, and moisture adsorbent in oil & gas dehydration unit. New findings and requirements discovered during the prototype test will be used to iteratively optimize and improve the design of the sand to zeolites process for future industrial-scale implementation.
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ANNA, H. R. Sant, A. G. BARRETO JR, F. W. TAVARES, C. R. A. ABREU, and J. F. do NASCIMENTO. "SIMULAÇÃO NUMÉRICA DA ADSORÇÃO DE METANO E NITROGÊNIO EM LEITO FIXO CONTENDO SILICALITA." In XX Congresso Brasileiro de Engenharia Química. São Paulo: Editora Edgard Blücher, 2015. http://dx.doi.org/10.5151/chemeng-cobeq2014-0499-25214-170906.

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Reports on the topic "Silicalite"

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Barnabas, M. V., D. W. Werst, and A. D. Trifunac. Transformations of toluene radical cation in ZSM-5 and Silicalite. Office of Scientific and Technical Information (OSTI), November 1992. http://dx.doi.org/10.2172/10161958.

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