Academic literature on the topic 'Silicon alkoxide'

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Journal articles on the topic "Silicon alkoxide"

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Horiguchi, Towa, Takahiro Muto, Miwa Taguchi, and Mikihiro Nomura. "Development of water vapor recovery membrane for efficient recycling system." Journal of Physics: Conference Series 2812, no. 1 (2024): 012015. http://dx.doi.org/10.1088/1742-6596/2812/1/012015.

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Abstract In wastewater treatment at semiconductor plants separation operations are currently conducted mainly by distillation. Membrane distillation using ceramic surface-treated membranes is expected to provide more efficient separation. In this study, we investigated the improvement of acid resistance of surface-treated ceramic membranes by using four silicon alkoxides, Hexamethyldisiloxane(HMDS), Dimethyldimethoxysilane(DMDMOS), 3,3,3-Trifluoropropyltrimethoxysilane (TFPrTMOS), Tetramethoxysilane(TMOS) were used as surface treatment and it was performed in the gas phase. The water vapor per
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Kemmitt, Tim, and William Henderson. "A New Route to Silicon Alkoxides from Silica." Australian Journal of Chemistry 51, no. 11 (1998): 1031. http://dx.doi.org/10.1071/c98060.

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A novel route to tetraethoxysilane and other silicon alkoxides is described, from amorphous silica (SiO2.nH2O) as the raw material. The reaction of amorphous silica with triethanolamine is enhanced by using an alkali metal hydroxide catalyst, to form a range of triethanolamine-substituted silatrane species. These can undergo alkoxide exchange in acidic alcohols to form alkoxysilatranes, tetraalkoxysilanes, hexaalkoxydisiloxanes and higher siloxanes. Reaction of triethanolamine-substituted silatranes with acetic anhydride produces acetoxysilatrane. Products were identified by multinuclear (1H,
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Manocha, L. M., Arpana Basak, S. Manocha, and Ankur Darji. "Morphological Studies on CNT Reinforced SiC/SiOC Composites." Eurasian Chemico-Technological Journal 13, no. 1-2 (2010): 41. http://dx.doi.org/10.18321/ectj64.

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Carbon nanotubes (CNTs) have been grown on commercially available silicon carbide (SiC) fabric by the catalytic chemical vapour deposition (CCVD) technique. These CNT coated SiC fabrics were used to develop Silicon Carbide–Carbon Nanotube–Silicon oxy Carbide matrix composites (SiC/CNTs/SiOC) by sol gel technique. Silicon oxy Carbide refers to carbon containing silicates wherein oxygen and carbon atoms share bonds with silicon in the amorphous network structure. In this approach, alkyl-substituted silicon alkoxides, which are molecular precursors containing oxygen and carbon functionalities on
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Dirè, Sandra, Evgeny Borovin, Masaki Narisawa, and Gian Domenico Sorarù. "Synthesis and characterization of the first transparent silicon oxycarbide aerogel obtained through H2decarbonization." Journal of Materials Chemistry A 3, no. 48 (2015): 24405–13. http://dx.doi.org/10.1039/c5ta06669g.

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Matsukawa, Hiroaki, Satoshi Yoda, Yasuo Okawa, and Katsuto Otake. "Phase Behavior of a Carbon Dioxide/Methyl Trimethoxy Silane/Polystyrene Ternary System." Polymers 11, no. 2 (2019): 246. http://dx.doi.org/10.3390/polym11020246.

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Recently, polymeric foams filled with a silica aerogel have been developed. The phase behavior of CO2/silicon alkoxide binary systems and CO2/silicon alkoxide/polymer ternary systems is an important factor that affects the design of novel processes. The phase behavior of a carbon dioxide (CO2)/methyl trimethoxy silane (MTMS)/polystyrene (PS) ternary system was measured using a synthetic method involving the observation of the bubble and cloud point. The phase boundaries were measured at temperatures ranging from 313.2 to 393.2 K and CO2 weight fractions between 0.01 and 0.08. The CO2/MTMS/PS s
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Zhang, Ruichao, and Ren Xu. "Chemical Vapor Deposition of Sr1−xBaxNb2O6 Thin Films Using Metal Alkoxide Precursors." Journal of Materials Research 15, no. 8 (2000): 1702–8. http://dx.doi.org/10.1557/jmr.2000.0245.

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A novel two-step metalorganic chemical vapor deposition process was used in this study to prepare Sr1−xBaxNb2O6 (SBN) thin films. Two thin layers of single-phase SrNb2O6 and BaNb2O6 were deposited alternately on a silicon substrate, and the solid solution of SBN was obtained by high-temperature annealing. The stoichiometry control of the SrNb2O6 and the BaNb2O6 thin films was achieved through deposition process control, according to the evaporation characteristics of double metal alkoxide. The evaporation behavior of double metal alkoxide precursors SrNb2(1-OC4H9)12 and BaNb2(1-OC4H9)12 was st
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Davis, E. James, and Mark F. Buehler. "Chemical Reactions with Single Microparticles." MRS Bulletin 15, no. 1 (1990): 26–33. http://dx.doi.org/10.1557/s088376940006070x.

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Fine particles can be produced via aerosol processes either by means of vapor phase reactions that produce solid or liquid particles or by reactions between a preexisting solid or liquid particle and a reactive gas. This article examines the latter processes because a strong interest has developed in the production of materials via aerosol processing. Although fine particles are frequently produced using flow systems, such as in the laminar flow aerosol reactor of McRae and his co-workers, fundamental studies of the chemical kinetics are more readily done using single microparticles or microdr
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Budd, K. D., S. K. Dey, and D. A. Payne. "Microstructural characterization of sol-gel derived PbTiO3 thin films." Proceedings, annual meeting, Electron Microscopy Society of America 44 (August 1986): 836–37. http://dx.doi.org/10.1017/s0424820100145522.

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A process has been developed for the fabrication of continuous, crack-free layers, of a series of compositions in the PbO-La2O3-TiO2-ZrO2 system. These layers were formed by spin-casting solutions of complex alkoxides onto platinum, silicon, silica, and a variety of substrates. The dried layers were amorphous gels which could be densified and converted to ceramic films at relatively low temperatures (e.g., 350-500°C). Gellation was caused by the condensation polymerization of alkoxide molecules, and was initiated by hydrolysis of the alkoxy groups. Gel structures were manipulated by controllin
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Pozarnsky, G. A., and A. V. McCormick. "The role of transesterification in the multistep “prehydrolysis” sol/gel synthesis of aluminum-rich aluminosilicate gels." Journal of Materials Research 11, no. 4 (1996): 922–27. http://dx.doi.org/10.1557/jmr.1996.0115.

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Using a prehydrolysis technique, transparent gels with very high aluminum content can be achieved with the use of isopropanol. Here 13C, 27Al, 29Si and 17O NMR at various stages of preparation show that when the aluminum added exceeds the number that silanols can fully protect, the excess aluminum alkoxide groups readily undergo transesterification with isopropanol. The aluminum isopropoxide (Al–OPri) groups thus formed are shown to be sufficiently stable that attack by water is impeded, thus allowing the remaining silicon alkoxide groups to hydrolyze and condense to form a homogeneous gel.
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Wang, Joanna S., Chien M. Wai, Gail J. Brown, Scott D. Apt, Howard E. Smith, and Laraba P. Kendig. "Formation of Insulating Oxide Films with Hydrolysis Reactions of Alkoxide Precursors in Supercritical Fluid CO2: Chemistry, Morphology, Characterization and Film Thickness." MRS Advances 1, no. 37 (2016): 2591–96. http://dx.doi.org/10.1557/adv.2016.269.

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ABSTRACTInsulating silicon dioxide (SiO2) films can be produced by hydrolysis of metal alkoxide tetraethylorthosilicate (TEOS) in the presence of an acid catalyst in supercritical fluid CO2 (sc-CO2). In this study, SiO2 films are formed on different substrates using TEOS as a source of silicon, and acetic acid (HAc) as a catalyst. Water required for the hydrolysis reaction is from in situ generation of esterification and condensation reactions involving HAc and the alcohol produced. The acid catalyzed deposition reaction actually starts at room temperature but produces decent films in sc-CO2 a
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Dissertations / Theses on the topic "Silicon alkoxide"

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Schnitzlbaumer, Malaika Diana. "Seltenerdmetall-Alkoxide auf periodisch mesoporösem Silica." [S.l.] : [s.n.], 2006. http://mediatum2.ub.tum.de/doc/604395/document.pdf.

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Макаренко, Виктория Васильевна. "Теплоэлектроизоляционный материал и изделия из него с повышенной стойкостью в потоках ионизованного газа". Thesis, НТУ "ХПИ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/29350.

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Диссертация на соискание ученой степени кандидата технических наук по специальности 05.17.11 – технология тугоплавких неметаллических материалов. – Национальный технический университет "Харьковский политехнический институт", Харьков, 2017. Диссертация посвящена разработке технологии корундовых композиционных материалов и изделий из них сложной конфигурации для эксплуатации в потоках ионизированного газа, вместо дорогих ГП аналогов, которые используются в новой технике. При проектировании составов КМ на основе системы Аl₂O₃–SiO₂ использован золь-гель процесс, спекающие добавки и модифицировани
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Макаренко, Вікторія Василівна. "Теплоелектроізоляційний матеріал та вироби з нього з підвищеною стійкістю в потоках іонізованого газу". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/29347.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.17.11 – технологія тугоплавких неметалічних матеріалів. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2017 р. Дисертацію присвячено розробці технології корундових композиційних матеріалів і виробів із них складної конфігурації для експлуатації в потоках іонізованого газу замість дорогих ГП аналогів, що використовуються в новій техніці. При проектуванні складів КМ на основі системи Аl₂O₃–SiO₂ використано можливості механохімічної активації процесів синтезу тугоплавких спол
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Kitschke, Philipp. "Experimental and theoretical studies on germanium-containing precursors for twin polymerization." Doctoral thesis, Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-205443.

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Im Fokus dieser Arbeit standen zwei Ziele. Zum einem war es Forschungsgegenstand, dass Konzept der Zwillingspolymerisation auf germaniumhaltige, molekulare Vorstufen wie zum Beispiel Germylene, spirozyklische Germaniumverbindungen und molekulare Germanate zu erweitern und somit organisch-anorganische Komposite beziehungsweise Hybridmaterialien darzustellen. Dazu wurden neuartige Germaniumalkoxide auf der Basis von Benzylalkoholaten, Salicylalkoholaten sowie Benzylthiolaten synthetisiert, charakterisiert und auf ihre Fähigkeit Komposite beziehungsweise Hybridmaterialien über den Prozess der Zwi
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Khosravi, Mardkhe Maryam. "Facile Synthesis and Characterization of a Thermally Stable Silica-Doped Alumina with Tunable Surface Area, Porosity, and Acidity." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/3968.

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Mesoporous γ-Al2O3 is one of the most widely used catalyst supports for commercial catalytic applications. The performance of a catalyst strongly depends on the combination of textural, chemical and physical properties of the support. Pore size is essential since each catalytic system requires a unique pore size for optimal catalyst loading, diffusion and selectivity. In addition, high surface area and large pore volume usually result in higher catalyst loading, which increases the number of catalytic reaction sites and decreases reaction time. Therefore, determination of surface area and poro
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Schnitzlbaumer, Malaika Diana [Verfasser]. "Seltenerdmetall-Alkoxide auf periodisch mesoporösem Silica / Malaika Diana Schnitzlbaumer." 2006. http://d-nb.info/985436689/34.

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Book chapters on the topic "Silicon alkoxide"

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Gaspar, P. P. "From Silicon Alkoxides, Silicon Carboxylates or Siloxanes." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145234.ch84.

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Niwa, Miki, and Yuichi Murakami. "Function and characterization of CVD zeolites with controlled pore-opening sizes." In Chemistry and Technology of Silicon and Tin. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198555803.003.0014.

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Abstract Chemical vapour deposition (CVD) zeolites with precisely-controlled pore-opening sizes have been synthesized which show enhanced shapeselectivity and hence, increased efficiency in applications which include catalytic reactions and separations. The method involves the deposition of a silicon alkoxide on the external surface of the zeolites; the resulting layer of silica thus formed exerts a fine control on the pore-opening sizes. As examples of application, the selective cracking of octane isomers on mordenite, and the separation of oxygen and nitrogen on zeolite A, are described. The
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Oshima, K. "From Low-Valent Titanium Alkoxide–Alkynylsilane Complexes." In Compounds of Groups 15 (As, Sb, Bi) and Silicon Compounds. Georg Thieme Verlag KG, 2002. http://dx.doi.org/10.1055/sos-sd-004-00796.

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Niwa, Miki, Norihisa Senoh, Takashi Hibino, Yasuo Nakatsuka, and Yuichi Murakami. "Reactant Shape-selectivity for Cracking of Linear Paraffin on HZSM-5 Modified by CVD of Silicon Alkoxide: A Strong Dependence upon the Reaction Temperature." In Zeolites and Microporous Crystals, Proceedings of the International Symposium on Zeolites and Microporous Crystals. Elsevier, 1994. http://dx.doi.org/10.1016/s0167-2991(08)63253-x.

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"Formation of Uniform Precipitates from Alkoxides." In Colloidal Silica. CRC Press, 2005. http://dx.doi.org/10.1201/9781420028706-46.

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Mehrotra, Ram C. "Alkoxy and acyloxy derivatives of silicon and tin and their uses as precursors for ceramics." In Chemistry and Technology of Silicon and Tin. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198555803.003.0006.

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Abstract In view of the increasing importance of M―0―C derivatives, particularly the alkyl orthoesters, for glasses and ceramics, we present in this paper an account of the preparation of the title compounds, emphasizing the methods of synthesis discovered in the author’s laboratories. A brief account is also given of their physical properties and chemical reactions, and of their application potential, especially of bimetallic alkoxides of tin, as precursors for ceramics synthesized by the Sol-Gel process.
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Mahmood, Wan Ahmad Kamil, and Mohammad Hossein Azarian. "Inorganic-Organic Composite Materials from Liquid Natural Rubber and Epoxidised Natural Rubber Derivatives." In Applied Environmental Materials Science for Sustainability. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1971-3.ch006.

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Organic-Inorganic composite materials (OICs) are used to describe the group of materials synthesized from polymers and inorganic metal alkkoxides. The interests in these materials arised from the need to ‘combine' the physical properties of inorganic glass materials and polymers such that the resultant OICs have the strength of the inorganic glass and flexibiliy of polymeric materials. Sol-gel technique have been the technique of choice due to much of its advantages, in particular the low temperature reaction. This is very important when natural rubber and its derivatives are used as the polym
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Cauzzi, D., M. Deltratti, M. Devillers, G. Predieri, O. Tirions, and A. Tiripicchio. "Silica-supported bismuth molybdate catalysts obtained by the sol-gel process via silicon alkoxides." In Preparation of Catalysts VII, Proceedings of the 7th International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts. Elsevier, 1998. http://dx.doi.org/10.1016/s0167-2991(98)80237-1.

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Imai, Hiroaki, Junrok Oh, Hirotoki Morimoto, and Hiroshi Hirashima. "Direct deposition methods of silica and silica/organic composite coatings in alkoxide solutions." In Coatings on Glass 1998. Elsevier, 1999. http://dx.doi.org/10.1016/b978-044450247-6.50025-4.

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Jolivet, Jean-Pierre. "Titanium, Manganese, and Zirconium Dioxides." In Metal Oxide Nanostructures Chemistry. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190928117.003.0011.

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The dioxides of titanium (TiO2), manganese (MnO2), and zirconium (ZrO2) are important materials because of their technological uses. TiO2 is used mainly as white pigment. Because of its semiconducting properties, TiO2, in its nanomaterial form, is also used as an active component of photocells and photocatalysis for self-cleaning glasses and cements . MnO2 is used primarily in electrode materials. ZrO2 is used in refractory ceramics, abrasive materials, and stabilized zirconia as ionic conductive materials stable at high temperature. Many of these properties are, of course, dependent on partic
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Conference papers on the topic "Silicon alkoxide"

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Wang, Shiho, Fikret Kirkbir, S. R. Chaudhuri, and Arnab Sarkar. "Accelerated subcritical drying of large alkoxide silica gels." In San Diego '92, edited by John D. Mackenzie. SPIE, 1992. http://dx.doi.org/10.1117/12.132006.

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Sano, Yoji, Shiho Wang, S. R. Chaudhuri, and Arnab Sarkar. "Silica glass monoliths from alkoxide gels: an old game with new results." In San Dieg - DL Tentative, edited by John D. Mackenzie and Donald R. Ulrich. SPIE, 1990. http://dx.doi.org/10.1117/12.22545.

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Hench, Larry L. "Intrinsic silica optical components by solgel processing." In OSA Annual Meeting. Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.fe3.

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The unique intrinsic optical properties of new alkoxide solgels derived (type V and VI) gel silica optics are compared with types I and II fused quartz optics and types III and IV synthetic fused silica optics. Type V gel silica has excellent transmission in the vacuum ultraviolet with the cutoff near theoretical, based on quantum mechanical calculations, at 159 nm. The high optical transmission extends up to 4200 nm with no OH absorption peaks in the near infrared. Other physical properties and structural characteristics of type V gel silica are similar to the highest grade fused silica but o
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Reports on the topic "Silicon alkoxide"

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Wongkasemjit, Sujitra. Comparison of titanium dioxide/silicon dioxide/zirconium dioxide synthesized via sol-gel process to be used as lens protection : final report. Chulalongkorn University, 2004. https://doi.org/10.58837/chula.res.2004.97.

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Many hard coating materials have been developed and based on the use of metal alkoxide or organosiloxanes prepared via the sol-gel process. Titanium glycolate, zirconium glycolate and silatrane precursors were processed as hard coating materials for polyurethane lens. These precursors are inexpensive and the preparation reaction is simple and straightforward. The effects of the sol-gel process parameters, viz, the type of precursors, the coupling agent (GPTS), and the curing agent (3-APS) were investigated. The surface property evaluation of ophthalmic lens was conducted with respect to the sc
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