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Journal articles on the topic 'Silicon alkoxide'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

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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2

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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3

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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4

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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5

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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6

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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7

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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8

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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9

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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10

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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11

Ivicheva, S. N., A. A. Klimashin, N. A. Ovsyannikov, A. S. Lysenkov, and Yu F. Kargin. "Nitrogenation Conditions for Mixed Silicon and Aluminum Alkoxide Xerogels." Russian Journal of Inorganic Chemistry 66, no. 8 (2021): 1183–90. http://dx.doi.org/10.1134/s003602362108009x.

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12

Oh, Junrok, Hiroaki Imai, and Hiroshi Hirashima. "Direct deposition of silica films using silicon alkoxide solution." Journal of Non-Crystalline Solids 241, no. 2-3 (1998): 91–97. http://dx.doi.org/10.1016/s0022-3093(98)00772-8.

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13

Fu, D. Y., and Wenjea J. Tseng. "Rheology of concentrated SiC particles in silicon alkoxide sols." Ceramics International 32, no. 2 (2006): 133–36. http://dx.doi.org/10.1016/j.ceramint.2005.01.017.

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14

Yastrebinsky, Roman Nikolaevich, Vyacheslav Ivanovich Pavlenko, Anna Viktorovna Yastrebinskaya, Andrey Ivanovich Gorodov, and Anastasia Vladislavovna Akimenko. "Application of Organosilicon Modifier Based on Tetraethoxysilane for the Production of Heat-Resistant Chrysotile Fibers and Reinforced Cement Composites." Fibers 11, no. 10 (2023): 80. http://dx.doi.org/10.3390/fib11100080.

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This research is aimed at obtaining boron-containing nanotubular chrysotile fibers with increased neutron absorption capacity. The possibility of using an organosilicon modifier based on tetraethoxysilane to increase the hydrothermal stability of chrysotile, as well as the strength of nanoreinforced composites based on a cement binder is considered. The mechanisms for the synthesis of heat-resistant nanotubular fibers of the composition Mg6(OH)8SiB4O10, which have a chrysotile structure, have been established. To increase the hydrothermal stability of chrysotile, crystalline hydrate phases wer

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15

Saha, Atanu, Sandeep R. Shah, and Rishi Raj. "Amorphous Silicon Carbonitride Fibers Drawn from Alkoxide Modified Ceraset™." Journal of the American Ceramic Society 86, no. 8 (2003): 1443–45. http://dx.doi.org/10.1111/j.1151-2916.2003.tb03493.x.

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16

Niwa, Miki, Yoshimi Kawashima, Takashi Hibino, and Yuichi Murakami. "Mechanism of chemical vapour deposition of silicon alkoxide on mordenites." Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases 84, no. 12 (1988): 4327. http://dx.doi.org/10.1039/f19888404327.

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17

Kozuka, Hiromitsu, Hisao Kuroki, and Sumio Sakka. "Viscosity behavior of silicon alkoxide solutions in sol-gel transformation." Journal of Non-Crystalline Solids 95-96 (December 1987): 1181–88. http://dx.doi.org/10.1016/s0022-3093(87)80732-9.

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18

Curran, Matthew D., Thomas E. Gedris, and A. E. Stiegman. "Catalysis of Silicon Alkoxide Transesterification by Early Transition Metal Complexes." Chemistry of Materials 10, no. 6 (1998): 1604–12. http://dx.doi.org/10.1021/cm970803u.

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19

Chakrabartty, Sutapa, and S. Kumar. "Preparation of Silica Gel Monoliths by Ammonolysis of Silicon Alkoxide." Transactions of the Indian Ceramic Society 54, no. 1 (1995): 19–23. http://dx.doi.org/10.1080/0371750x.1995.10804671.

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20

Cheng, Xueli, Dairong Chen, and Yongjun Liu. "Mechanisms of Silicon Alkoxide Hydrolysis-Oligomerization Reactions: A DFT Investigation." ChemPhysChem 13, no. 9 (2012): 2392–404. http://dx.doi.org/10.1002/cphc.201200115.

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21

Ludeña Huaman, Michael Azael. "Proceso Sol-Gel en la Síntesis de Dióxido de Silicio (Sio2)." Revista Bases de la Ciencia. e-ISSN 2588-0764 6, no. 2 (2021): 1. http://dx.doi.org/10.33936/rev_bas_de_la_ciencia.v6i2.2548.

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 En ciencia de los materiales el dióxido de silicio, también conocido como sílice, ha recibido significante atención en diferentes áreas de investigación, ganando un espacio importante y de mucho interés entre los investigadores, debido a sus diversas aplicaciones que abarcan desde la síntesis de soportes para catalizadores hasta materiales para la liberación controlada de fármacos. Es motivo por el cual, en este manuscrito se dan a conocer aspectos químicos fundamentales e importantes sobre el proceso sol-gel en la síntesis de la sílice a partir de moléculas precursoras de alcóxidos de

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22

Okuzaki, Sachiko, Yuji Iwamoto, Shinji Kondoh, Koichi Kikuta, and Shin-ichi Hirano. "Processing of silicon carbide ceramics using chemically modified polycarbosilanes." Journal of Materials Research 14, no. 1 (1999): 189–95. http://dx.doi.org/10.1557/jmr.1999.0028.

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Chemically modified polycarbosilane (PC) which contains Si–Al–C–O component, PCOAl, was synthesized using PC and aluminum triisopropoxide. Ceramic yield was greatly improved through the modification of PC with a metal alkoxide. The phase transformation behavior and microstructure development of silicon carbide (SiC) were studied on β–SiC powders coated with chemically modified PC. The β-α phase transformation of SiC was enhanced by the coating of chemically modified PC on β–SiC powder. A unique microstructure with submicron-sized plate-like grains was developed, since the fine a phase produced

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23

Bailey, J. K. "Structural development of solution-derived, monodisperse powders studied using cryo-TEM." Proceedings, annual meeting, Electron Microscopy Society of America 47 (August 6, 1989): 434–35. http://dx.doi.org/10.1017/s0424820100154147.

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High quality advanced ceramic materials can be produced by using unagglomerated monodisperse powders for preparation of ceramic pre-forms. Stöber et al. first showed that monodisperse silica particles could be derived from silicon alkoxides, and Bugosh et al. demonstrated the control over particle size and mass fraction that could be obtained. Similarly, Barringer and Bowen produced titania colloids but without using a catalyst. In these preparation procedures, a solution of metal alkoxide monomers undergoes hydrolysis and condensation to form the particles. By the chemical processing of monod

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24

Izutsu, Hiroyuki, Fujio Mizukami, Takeshi Sashida, Kazuyuki Maeda, Yoshimichi Kiyozumi, and Yoshikatsu Akiyama. "Effect of malic acid on structure of silicon alkoxide derived silica." Journal of Non-Crystalline Solids 212, no. 1 (1997): 40–48. http://dx.doi.org/10.1016/s0022-3093(96)00620-5.

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25

Schrotter, Jean-Christophe, Antonio Cardenas, Monique Smaihi, and Nadine Hovnanian. "Silicon and phosphorus alkoxide mixture: Sol-gel study by spectroscopic technics." Journal of Sol-Gel Science and Technology 4, no. 3 (1995): 195–204. http://dx.doi.org/10.1007/bf00488374.

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26

TOKUI, TOSHIMI, MOTOTAKE YANO, and KENJI ASAMI. "Kinetics of Particle Growth in Hydrolysis and Condensation of Silicon Alkoxide." KAGAKU KOGAKU RONBUNSHU 24, no. 5 (1998): 784–90. http://dx.doi.org/10.1252/kakoronbunshu.24.784.

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27

Zangvil, Avigdor, Chien-Cheng Lin, and Robert Ruh. "Microstructural Studies in Alkoxide-Derived Mullite/Zirconia/Silicon Carbide-Whisker Composites." Journal of the American Ceramic Society 75, no. 5 (1992): 1254–63. http://dx.doi.org/10.1111/j.1151-2916.1992.tb05565.x.

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28

Sakka, Sumio, and Hiromitsu Kozuka. "Fiber Drawing from Silicon Alkoxide Solutions in the Sol–Gel Process." Chemistry Letters 16, no. 9 (1987): 1763–66. http://dx.doi.org/10.1246/cl.1987.1763.

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29

Narita, Ayumi, Yuji Baba, Tetsuhiro Sekiguchi, Iwao Shimoyama, Norie Hirao, and Tsuyoshi Yaita. "Anchoring of alkyl chain molecules on oxide surface using silicon alkoxide." Applied Surface Science 258, no. 6 (2012): 2034–37. http://dx.doi.org/10.1016/j.apsusc.2011.04.111.

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30

Kozuka, Hiromitsu, Hisao Kuroki, and Sumio Sakka. "Flow characteristics and spinnability of sols prepared from silicon alkoxide solution." Journal of Non-Crystalline Solids 100, no. 1-3 (1988): 226–30. http://dx.doi.org/10.1016/0022-3093(88)90022-1.

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31

Sorarù, Gian Domenico, Alberto Ravagni, Roberto Dal Maschio, Giovanni Carturan, and Florence Babonneau. "Polymer-derived Si3N4−ZrO2 nanocomposite powders." Journal of Materials Research 7, no. 5 (1992): 1266–70. http://dx.doi.org/10.1557/jmr.1992.1266.

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A Zr-modified polycarbosilane has been obtained reacting a zirconium alkoxide with a polycarbosilane. This new preceramic polymer has been nitridated in flowing ammonia up to 1000 °C. The conversion process of the polymer precursor to the Si–N–Zr–O ceramic has been followed mainly by FT-IR, XRD, and TEM investigations. The formation of the Si–N–Si network starts at 600 °C. At 1000 °C the system can be described as an amorphous silicon nitride ceramic in which very fine zirconia-based particles are dispersed. Increasing the temperature to 1300 °C results in the crystallization of t-ZrO2 microcr

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32

Baba, Y., G. Wu, T. Sekiguchi, and I. Shimoyama. "Photon-stimulated ion desorption from mono- and multilayered silicon alkoxide on silicon by core-level excitation." Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 19, no. 4 (2001): 1485–89. http://dx.doi.org/10.1116/1.1359545.

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33

Mutlu, Baris R., Sujin Yeom, Ho-Wang Tong, Lawrence P. Wackett, and Alptekin Aksan. "Silicon alkoxide cross-linked silica nanoparticle gels for encapsulation of bacterial biocatalysts." Journal of Materials Chemistry A 1, no. 36 (2013): 11051. http://dx.doi.org/10.1039/c3ta12303k.

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34

Avnir, D., and V. R. Kaufman. "Alcohol is an unnecessary additive in the silicon alkoxide sol-gel process." Journal of Non-Crystalline Solids 92, no. 1 (1987): 180–82. http://dx.doi.org/10.1016/s0022-3093(87)80368-x.

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35

De Ruiter, B., J. E. Benson, R. A. Jacobson, and John G. Verkade. "Formation of unexpected silicon alkoxide isomers in a rectangular planar chelating framework." Inorganic Chemistry 29, no. 5 (1990): 1065–68. http://dx.doi.org/10.1021/ic00330a031.

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36

Okusaki, Sachiko, and Tomoji Ohishi. "The effect of photo-irradiation in hydrolysis and condensation of silicon alkoxide." Journal of Non-Crystalline Solids 319, no. 3 (2003): 311–13. http://dx.doi.org/10.1016/s0022-3093(02)02054-9.

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37

Ponton, Alain, and Stephane Warlus. "Viscoelasticity and morphological modulation of silicon alkoxide-based systems by selective catalysts." Rheologica Acta 49, no. 9 (2010): 953–60. http://dx.doi.org/10.1007/s00397-010-0462-9.

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38

Matsukawa, Mami, Isao Nagai, and Yuko Tanaka. "An Ultrasonic Monitoring of the Sol-Gel Process in Silicon Alkoxide Solutions." Japanese Journal of Applied Physics 34, Part 1, No. 5B (1995): 2575–78. http://dx.doi.org/10.1143/jjap.34.2575.

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39

Maeda, Hirotaka, Yuki Nakano, and Toshihiro Kasuga. "Preparation of CaO-SiO2Glass-Ceramic Spheres by Electrospraying Combined with Sol-Gel Method." Journal of Nanomaterials 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/463048.

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CaO-SiO2glass-ceramic spheres were prepared by an electrospray method using hydrolyzed silicon alkoxide containing calcium nitrate. Crystalline calcium silicates, such as Ca2SiO4andβ-CaSiO3, formed around the surface of the spheres after heat treatment. The dissolution of the crystal phase of the spheres caused the release of Ca2+and Si4+ions during the initial stage of soaking in Tris-buffer solution, leading to the formation of nanosized pores at the sphere surface. The incorporation of Ca2+ions into the glassy phase of the spheres suppressed the rapid pH increase during the initial stage of

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40

Yeh, Ta-Chuan, Pei Tien, and Lai-Kwan Chau. "Fiber-Optic Evanescent-Wave Absorption Copper(II) Sensor Based on Sol-Gel-Derived Organofunctionalized Silica Cladding." Applied Spectroscopy 55, no. 10 (2001): 1320–26. http://dx.doi.org/10.1366/0003702011953676.

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A fiber-optic evanescent-wave absorption sensor was constructed on the basis of an organofunctionalized silica cladding. The cladding material was prepared by the sol-gel processing of an organofunctional silicon alkoxide, which contains a propyl-ethylenediamine triacetate (PEDTA) group. The PEDTA group can chelate with a Cu(II) ion to form a colored complex. Because of the large formation constant of the complexation reaction, a kinetic approach was used to quantify the Cu(II) content in samples. The sensor has a dynamic range of 0.5–100 ppm and a detection limit of 56 ppb. The measurement of

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41

HAYASHI, Fusashi, Kouichi TAKEI, Youichi MACHII, and Toshikatsu SHIMAZAKI. "Effect of Solvents on the Structure of Dried Gel Prepared from Silicon Alkoxide." Journal of the Ceramic Society of Japan 98, no. 1139 (1990): 663–68. http://dx.doi.org/10.2109/jcersj.98.663.

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42

Wootton, A. M., M. Rappensberger, M. H. Lewis, S. Kitchin, A. P. Howes, and R. Dupree. "Structural properties of multi-component silicon oxycarbide glasses derived from metal alkoxide precursors." Journal of Non-Crystalline Solids 204, no. 3 (1996): 217–27. http://dx.doi.org/10.1016/s0022-3093(96)00491-7.

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43

Kinashi, Koji, Michio Niwano, Jun‐ichi Sawahata, Fumikazu Shimoshikiryo, and Nobuo Miyamoto. "Synchrotron radiation induced reactions of a condensed layer of silicon alkoxide on Si." Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 13, no. 4 (1995): 1879–84. http://dx.doi.org/10.1116/1.579674.

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44

Izutsu, Hiroyuki, Fujio Mizukami, Yoshimichi Kiyozumi, and Kazuyuki Maeda. "Structure and Properties of Silica Derived from Silicon Alkoxide Reacted with Tartaric Acid." Journal of the American Ceramic Society 80, no. 10 (2005): 2581–89. http://dx.doi.org/10.1111/j.1151-2916.1997.tb03160.x.

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45

Qiao, Zhen-An, Ling Zhang, Mingyi Guo, Yunling Liu, and Qisheng Huo. "Synthesis of Mesoporous Silica Nanoparticles via Controlled Hydrolysis and Condensation of Silicon Alkoxide." Chemistry of Materials 21, no. 16 (2009): 3823–29. http://dx.doi.org/10.1021/cm901335k.

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46

HIBINO, T. "Shape-selectivity over hzsm-5 modified by chemical vapor deposition of silicon alkoxide." Journal of Catalysis 128, no. 2 (1991): 551–58. http://dx.doi.org/10.1016/0021-9517(91)90312-r.

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47

Ruan, Ding-Shan, Ya-Li Li, Lei Wang, Dong Su, and Feng Hou. "Fabrication of silicon oxycarbide fibers from alkoxide solutions along the sol–gel process." Journal of Sol-Gel Science and Technology 56, no. 2 (2010): 184–90. http://dx.doi.org/10.1007/s10971-010-2292-8.

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48

Konsago, Sabi William, Katarina Žiberna, Brigita Kmet, Andreja Benčan, Hana Uršič, and Barbara Malič. "Chemical Solution Deposition of Barium Titanate Thin Films with Ethylene Glycol as Solvent for Barium Acetate." Molecules 27, no. 12 (2022): 3753. http://dx.doi.org/10.3390/molecules27123753.

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Chemical solution deposition (CSD) of BaTiO3 (BT) or BT-based thin films relies on using a carboxylic acid and alcohol as the solvents for alkaline-earth carboxylate and transition-metal alkoxide, respectively; however, the esterification reaction of the solvents may lead to in-situ water formation and precipitation. To avoid such an uncontrolled reaction, we developed a route in which ethylene glycol (EG) is used as the solvent for Ba-acetate. The EG-based BT coating solutions are stable for at least a few months. The thermal decomposition of the BT xerogel obtained by drying the EG-based sol

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49

Yin, Qinnan, Huixin Jin, Fuzhong Wu, Weijie Wang, and Qian Yang. "Preparation of High-purity Alumina via Hydrolysis of Aluminum Isopropoxide after Desilication with Lanthanum Oxide." IOP Conference Series: Earth and Environmental Science 898, no. 1 (2021): 012022. http://dx.doi.org/10.1088/1755-1315/898/1/012022.

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Abstract High-purity alumina refers to ultra-fine alumina powder with a purity exceeding 99.99% and a uniform particle size. This material exhibits excellent corrosion resistance, high-temperature resistance, wear resistance, and oxidation resistance. Owing to the high silicon content of alumina prepared by means of the alcohol-aluminum hydrolysis method, the purity of the alumina is often unsatisfactory. Therefore, in this work, a new method for adding lanthanum oxide to isopropanol in the early aluminum isopropoxide synthesis stage is proposed. When lanthanum oxide was added, the silicon con

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HIDAYAT, RAHMAT, HERMAN, FITRILAWATI, MASAYOSHI OJIMA, and MASANORI OZAKI. "FABRICATION OF DISTRIBUTED FEEDBACK GRATING FROM HYBRID POLYMER WHICH EXHIBITS PHOTO-PUMPED LASING ACTION." International Journal of Nanoscience 09, no. 04 (2010): 307–10. http://dx.doi.org/10.1142/s0219581x10006855.

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Abstract:

We have studied the preparation of hybrid organic–inorganic polymers and the fabrication of distributed feedback grating using those hybrid polymers. The hybrid polymer precursors were prepared from ester-modified silicon alkoxide by using sol–gel technique. The gel precursor can be then polymerized into a solid film by photo-polymerization. The gratings were fabricated by interference laser technique by employing Lloyd's mirror configuration. The Atomic Force Microscopy (AFM) image shows the formation of corrugated grating structure. Although the grating depth is relatively shallow compared t

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