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Journal articles on the topic 'Zirconium silicates'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Esteban Benito, Heriberto, Ricardo García Alamilla, Juan Manuel Hernández Enríquez, Francisco Paraguay Delgado, Daniel Lardizabal Gutiérrez, and Pedro García. "Porous Silicates Modified with Zirconium Oxide and Sulfate Ions for Alcohol Dehydration Reactions." Advances in Materials Science and Engineering 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/325463.

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Porous silicates were synthesized by a nonhydrothermal method, using sodium silicate as a source of silica and cetyltrimethylammonium bromide as a template agent. Catalysts were characterized using thermogravimetric analysis, N2physisorption, X-ray diffraction, FTIR spectroscopy, pyridine adsorption, potentiometric titration withn-butylamine, scanning electronic microscopy, and transmission electronic microscopy. The surface area of the materials synthesized was greater than 800 m2/g. The introduction of zirconium atoms within the porous silicates increased their acid strength from −42 to 115

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2

Ferreira, Paula, Artur Ferreira, João Rocha, and Maria R. Soares. "Synthesis and Structural Characterization of Zirconium Silicates." Chemistry of Materials 13, no. 2 (2001): 355–63. http://dx.doi.org/10.1021/cm0007196.

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3

Rakshe, Bhavana, Veda Ramaswamy, and A. V. Ramaswamy. "Crystalline, Microporous Zirconium Silicates with MEL Structure." Journal of Catalysis 163, no. 2 (1996): 501–5. http://dx.doi.org/10.1006/jcat.1996.0353.

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4

Hall, Reece, and Jennifer Readman. "EXAFS studies of the metal coordination environments in mixed Ti/Zr silicates." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1526. http://dx.doi.org/10.1107/s2053273314084733.

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Microporous materials have a wide range of commercial uses from ion-exchangers to catalysts and have been used in the treatment of nuclear waste. The acidity associated with legacy waste pools often limits the effectiveness of these zeolites due to a loss of crystallinity. Microporous titanium silicates display different structural characteristics compared to conventional zeolites. Sitinakite, KNa2Ti4Si2O13(OH)·4H2O and the synthetic niobium doped analogue are being used as ion-exchange materials for the removal of Cs+and Sr2+from nuclear waste . Natisite is a layered titanium silicate with ti

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5

Kouznetsova, T. F., A. I. Ivanets, and V. S. Komarov. "Low-temperature synthesis of mesoporous M41S metal-silicates and their adsorption and capillary-condensation properties." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 55, no. 3 (2019): 338–44. http://dx.doi.org/10.29235/1561-8331-2019-55-3-338-344.

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Low-temperature synthesis of the mesoporous silicates containing d-metals is carried out. The measured isotherms of low-temperature nitrogen adsorption-desorption by chrome, vanadium and zirconium silicate adsorbents belong to Type IV (b) of sorption isotherms on IUPAC classification. Such isothermal curves are inherent in mesoporous systems with the M41S type of ordering of the making elements. Increasing рН of sedimentation and metal content lead to amorphization of samples and distortion of a supramolecular lattice with uniform regular geometry and a long-range ordering.

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6

Wilk, G. D., R. M. Wallace, and J. M. Anthony. "Hafnium and zirconium silicates for advanced gate dielectrics." Journal of Applied Physics 87, no. 1 (2000): 484–92. http://dx.doi.org/10.1063/1.371888.

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7

Adamski, Andrzej, Pawel Jakubus, and Zbigniew Sojka. "Metastabilization of Tetragonal Zirconia by Doping with Low Amounts of Silica." Solid State Phenomena 128 (October 2007): 89–96. http://dx.doi.org/10.4028/www.scientific.net/ssp.128.89.

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Nanocrystalline tetragonal zirconia was obtained from ZrOCl2 via the modified forced hydrolysis method combined with aging of the hydrous amorphous precipitate in the mother liquor at 100 °C for 48 h (pH = 9.3). The role of the precipitation and aging temperatures in the metastabilization of the tetragonal ZrO2 polymorph is discussed in terms of the structural and textural data of the resultant oxide. The influence of low concentrations of silica (0.01 – 0.35 wt. % Si), spontaneously leached from the glass vessel or intentionally introduced to the parent solution, was shown to be a vital facto

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8

Nandiwale, Kakasaheb Y., Andrew M. Danby, Anand Ramanathan, Raghunath V. Chaudhari, and Bala Subramaniam. "Zirconium-Incorporated Mesoporous Silicates Show Remarkable Lignin Depolymerization Activity." ACS Sustainable Chemistry & Engineering 5, no. 8 (2017): 7155–64. http://dx.doi.org/10.1021/acssuschemeng.7b01344.

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9

Lin, Zhi, João Rocha, Paula Ferreira, Alan Thursfield, Jonathan R. Agger, and Michael W. Anderson. "Synthesis and Structural Characterization of Microporous Framework Zirconium Silicates." Journal of Physical Chemistry B 103, no. 6 (1999): 957–63. http://dx.doi.org/10.1021/jp983708x.

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10

Sepehrian, Hamid, Syed Waqif-Husain, Javad Fasihi, and Mohamad Khayatzadeh Mahani. "Adsorption Behavior of Molybdenum on Modified Mesoporous Zirconium Silicates." Separation Science and Technology 45, no. 3 (2010): 421–26. http://dx.doi.org/10.1080/01496390903423519.

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11

Ferreira, Paula, Artur Ferreira, Joao Rocha, and Maria R. Soares. "ChemInform Abstract: Synthesis and Structural Characterization of Zirconium Silicates." ChemInform 32, no. 24 (2010): no. http://dx.doi.org/10.1002/chin.200124023.

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12

Wilson, G., and F. P. Glasser. "Powder X-Ray Data for Synthetic Anhydrous Sodium Zirconium Silicates." Powder Diffraction 2, no. 3 (1987): 176–79. http://dx.doi.org/10.1017/s0885715600012653.

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AbstractA systematic survey of phase formation in the Na2O-ZrO2-SiO2 system has revealed inconsistencies in the number and identity of ternary phases, and of their X-ray powder data. The phases Na2ZrSiO5, Na4Zr2Si3O12, Na2ZrSi2O7 and Na2ZrSi4O11 were prepared by solid-state reaction and their experimental X-ray diffraction patterns measured. Calculated X-ray diffraction patterns were generated by computer, using published crystallographic data, and critically compared with the experimentally observed values. The unit-cell constants were redefined to a greater accuracy than the presently accept

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13

Souza, Júlio, Mario Ramos, Márcio Fredel, Antonio Novaes Oliveira, Filipe Silva, and Bruno Henriques. "PEEK composites embedding natural silica fibers and lithium zirconium silicates." Clinical Oral Implants Research 29 (October 2018): 216. http://dx.doi.org/10.1111/clr.101_13358.

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14

Rainho, J. P., D. Ananias, Z. Lin, A. Ferreira, L. D. Carlos, and J. Rocha. "Photoluminescence and local structure of Eu(III)-doped zirconium silicates." Journal of Alloys and Compounds 374, no. 1-2 (2004): 185–89. http://dx.doi.org/10.1016/j.jallcom.2003.11.089.

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15

Klein, Lisa C. "Sol-Gel Process for Proton Exchange Membranes." Key Engineering Materials 391 (October 2008): 159–68. http://dx.doi.org/10.4028/www.scientific.net/kem.391.159.

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The sol-gel process has been used to modify the electrolyte membrane used in proton exchange membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). Recent progress is reported in the synthesis of hybrid membranes involving Nafion®. These membranes have been prepared by infiltration and recasting, and contain silicates, phosphosilicates, zirconium phosphosilicates, titanosilicates, or phosphotungstates.

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16

Bortun, Anatoly I., Lyudmila N. Bortun, and Abraham Clearfield. "Hydrothermal Synthesis of Sodium Zirconium Silicates and Characterization of Their Properties." Chemistry of Materials 9, no. 8 (1997): 1854–64. http://dx.doi.org/10.1021/cm9701419.

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17

Ito, T., H. Kato, T. Nango, and Y. Ohki. "Improvement in electrical properties of hafnium and zirconium silicates by postnitriding." Journal of Physics: Condensed Matter 18, no. 26 (2006): 6009–16. http://dx.doi.org/10.1088/0953-8984/18/26/019.

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18

Sadaoka, Y., Y. Sakai, and S. Mitsui. "Humidity sensor using zirconium phosphates and silicates. Improvements of humidity sensitivity." Sensors and Actuators 13, no. 2 (1988): 147–57. http://dx.doi.org/10.1016/0250-6874(88)80037-4.

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19

Wahyudi, Kristanto, Eneng Maryani, Ferry Arifiadi, et al. "Low-calcination temperatures of magnesia partially stabilized zirconia (Mg-PSZ) nanoparticles derived from local zirconium silicates." Materials Research Express 8, no. 4 (2021): 045022. http://dx.doi.org/10.1088/2053-1591/abf9ce.

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20

Nakayama, H., Kohei Morishita, Shojiro Ochiai, et al. "Quest and Evaluation of Topcoat Materials for Environmental Barrier Coatings of SiC/SiC Composites." Key Engineering Materials 317-318 (August 2006): 549–52. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.549.

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SiC fiber reinforced SiC matrix (SiC/SiC) composites are one of the most promising materials for high temperature structural applications such as power generation and propulsion systems. SiC/SiC composites are, however, susceptible to accelerated attacks in water vapor environments through oxidation and volatilization reaction. For protection from such attacks, Environmental Barrier Coatings (EBCs) are indispensable. We have investigated some oxides and rare-earth silicates as topcoat candidate materials for EBCs. Topcoat materials must be stable in the high-water-vapor pressurized environment

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21

Monaghan, S., J. C. Greer, and S. D. Elliott. "Thermal decomposition mechanisms of hafnium and zirconium silicates at the atomic scale." Journal of Applied Physics 97, no. 11 (2005): 114911. http://dx.doi.org/10.1063/1.1926399.

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22

Skoda, David, Ales Styskalik, Zdenek Moravec, Petr Bezdicka, and Jiri Pinkas. "Templated non-hydrolytic synthesis of mesoporous zirconium silicates and their catalytic properties." Journal of Materials Science 50, no. 9 (2015): 3371–82. http://dx.doi.org/10.1007/s10853-015-8888-1.

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23

Grieve, Stephen, Hayley Green, Reece Hall, and Jennifer Readman. "In-situ high-temperature diffraction studies of ion-exchanged umbite." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C70. http://dx.doi.org/10.1107/s205327331409929x.

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Microporous materials such as zirconium silicates have the potential to be of importance in the nuclear industry for the selective uptake of cationic radionuclides and environmental pollutants. The structural behaviour of these materials at elevated temperatures is of interest for two reasons, the first is the densification of the exchanged materials prior to long term storage and the second is the formation of new porous phases which may have increased ion exchanged affinity for certain cations. The work presented here focuses on the umbite system. Umbite is a naturally occurring microporous

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24

Lin, Zhi, and João Rocha. "Small-pore framework zirconium and hafnium silicates with the structure of mineral tumchaite." Microporous and Mesoporous Materials 76, no. 1-3 (2004): 99–104. http://dx.doi.org/10.1016/j.micromeso.2004.07.037.

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25

Lu, Hongdian, Charles A. Wilkie, Ming Ding, and Lei Song. "Flammability performance of poly(vinyl alcohol) nanocomposites with zirconium phosphate and layered silicates." Polymer Degradation and Stability 96, no. 7 (2011): 1219–24. http://dx.doi.org/10.1016/j.polymdegradstab.2011.04.014.

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26

BORTUN, A. I., L. N. BORTUN, and A. CLEARFIELD. "ChemInform Abstract: Hydrothermal Synthesis of Sodium Zirconium Silicates and Characterization of Their Properties." ChemInform 28, no. 45 (2010): no. http://dx.doi.org/10.1002/chin.199745018.

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27

Morgan, P. E. D., J. L. Hicks, H. A. Bump, and M. S. Koutsoutis. "Unit cells and indexed X-ray powder patterns of two calcium zirconium silicates." Journal of Materials Science Letters 6, no. 5 (1987): 559–61. http://dx.doi.org/10.1007/bf01739283.

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28

Lowalekar, Viral, and Srini Raghavan. "Etching of Zirconium Oxide, Hafnium Oxide, and Hafnium Silicates in Dilute Hydrofluoric Acid Solutions." Journal of Materials Research 19, no. 4 (2004): 1149–56. http://dx.doi.org/10.1557/jmr.2004.0149.

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Oxides and silicates of zirconium and hafnium are actively being considered and tested to replace SiO2 as the gate material. Though these materials have the high-dielectric constant (k ∼ 20–25) needed to provide a larger equivalent oxide thickness, they are very refractory and difficult to etch by wet and dry methods. In this paper, work done on wet etching of ZrO2, HfO2, and HfSixOy in dilute hydrofluoric acid (HF) solutions is presented and discussed. Experiments were done on various high-k films deposited by metalorganic chemical vapor deposition. It was found that the as-deposited high-k f

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29

Surbhi, Saruchi, and Sushil Kumar. "Effect of Annealing Temperature on Structural, Photoluminescence and Thermal Properties of Nanosized Zirconium Silicates." Advanced Science Letters 20, no. 7 (2014): 1504–8. http://dx.doi.org/10.1166/asl.2014.5586.

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30

Ito, Toshihide, Hiromitsu Kato, and Yoshimichi Ohki. "Mechanisms of several photoluminescence bands in hafnium and zirconium silicates induced by ultraviolet photons." Journal of Applied Physics 99, no. 9 (2006): 094106. http://dx.doi.org/10.1063/1.2199977.

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31

VERESHCHAGINA, T. A., E. A. KUTIKHINA, E. V. FOMENKO, and A. G. ANSHITS. "Microsphere Sorbents Based on Cenosphere Supported Zirconium Molybdates and Zirconium Silicates for Cesium-137 and Strontium-90 Removal from Radioactive Waste Solutions." Chemistry for Sustainable Development 29, no. 3 (2021): 261–68. http://dx.doi.org/10.15372/csd2021304.

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32

VERESHCHAGINA, T. A., E. A. KUTIKHINA, E. V. FOMENKO, and A. G. ANSHITS. "Microsphere Sorbents Based on Cenosphere Supported Zirconium Molybdates and Zirconium Silicates for Cesium-137 and Strontium-90 Removal from Radioactive Waste Solutions." Химия в интересах устойчивого развития 29, no. 3 (2021): 268–75. http://dx.doi.org/10.15372/khur2021304.

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33

Karlina, Elin, Nina Djustiana, I. Made Joni, Renny Febrida, Camellia Panatarani, and Akhyar Dyni Zakyah. "Analisis Mikrostruktur Partikel Zirkoniakalsia-silika (ZrO 2 -CaO-SiO ) Dari Pasir Zirkon Alam Indonesia Menggunakan Metode Spray Pyrolysis." Jurnal Material Kedokteran Gigi 6, no. 1 (2017): 23. http://dx.doi.org/10.32793/jmkg.v6i1.261.

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Indonesian Natural Sand, Zircon, is an Indonesia’s natural resource that contains zirconia, silica, titania and alumina. In Dentistry, zirconia as one of the content in natural zircon sand, have the potential to be the material for filler composites. The purpose of this research was to analyze the Zirconia-Calcium-Silicate Particle (ZrO2CaO-SiO2) synthesized from Indonesia natural sand, zircon, in microstructural way. Methods: By synthesizing ZirconiaCalcium-Silicate particle (ZrO2-CaO-SiO2) from Indonesia natural zircon sand, using spray pyrolysis method. A precursor solution that is used con

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34

Zhu, Hongda, Rajamanickam Maheswari, Anand Ramanathan, and Bala Subramaniam. "Evaporation-induced self-assembly of mesoporous zirconium silicates with tunable acidity and facile catalytic dehydration activity." Microporous and Mesoporous Materials 223 (March 2016): 46–52. http://dx.doi.org/10.1016/j.micromeso.2015.10.026.

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35

Udalov, Yu P., I. V. Pozniak, P. Sazavsky, et al. "Physicochemical transformations in multicomponent melts containing uranium, zirconium, and iron oxides and calcium silicates and aluminates." Russian Journal of Applied Chemistry 90, no. 6 (2017): 838–45. http://dx.doi.org/10.1134/s1070427217060027.

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36

Pertierra, Pilar, Miguel A. Salvadó, Santiago Garcı́a-Granda, Anatoly I. Bortun, Sergei A. Khainakov, and José R. Garcı́a. "Hydrothermal synthesis and structural characterization of framework microporous mixed tin–zirconium silicates with the structure of umbite." Inorganic Chemistry Communications 5, no. 10 (2002): 824–28. http://dx.doi.org/10.1016/s1387-7003(02)00574-9.

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37

Tahir, D., Suarga Suarga, Yulianti Yulianti, and N. H. Sari. "Stopping Powers and Inelastic Mean Free Path of 100 eV to 30 keV Electrons in Zirconium Silicates." Atom Indonesia 38, no. 3 (2013): 100. http://dx.doi.org/10.17146/aij.2012.173.

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38

Nazer, Sahar, Alireza Najafi Chermahini, Bahram Hosseini Monjezi, and Hossein A. Dabbagh. "Direct conversion of xylose to butyl levulinate over mesoporous zirconium silicates with an integrated dehydration alcoholysis process." Journal of the Taiwan Institute of Chemical Engineers 114 (September 2020): 168–75. http://dx.doi.org/10.1016/j.jtice.2020.09.007.

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39

Huang, Benhua, Jie Wang, Tao Yang, et al. "Synthesis of mesoporous zirconium-containing silicates and their application for catalytic asymmetric addition of diethylzinc to aldehydes." Journal of Porous Materials 24, no. 4 (2016): 867–79. http://dx.doi.org/10.1007/s10934-016-0326-5.

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40

Belkin, Harvey E., Benedetto De Vivo, Annamaria Lima, and Kálmán Török. "Magmatic (silicates/saline/sulfur-rich/CO2) immiscibility and zirconium and rare-earth element enrichment from alkaline magma chamber margins: evidence from Ponza Island, Pontine Archipelago, Italy." European Journal of Mineralogy 8, no. 6 (1997): 1401–20. http://dx.doi.org/10.1127/ejm/8/6/1401.

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41

Udalov, Yu P., I. V. Pozniak, P. Sazavsky, et al. "Erratum to: “Physicochemical Transformations in Multicomponent Melts Containing Uranium, Zirconium, and Iron Oxides and Calcium Silicates and Aluminates”." Russian Journal of Applied Chemistry 90, no. 11 (2017): 1892. http://dx.doi.org/10.1134/s1070427217110258.

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42

Song, In Gu, Christopher Timmons, Galit Levitin, and Dennis W. Hess. "Photoresist Removal Using Alternative Chemistries and Pressures." Solid State Phenomena 145-146 (January 2009): 303–10. http://dx.doi.org/10.4028/www.scientific.net/ssp.145-146.303.

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Approximately 20% of the processing steps in integrated circuit (IC) fabrication involve surface cleaning and removal of photoresist and plasma etch residues. Continuous device minimization requires the use of thin films (<20 nm), closely spaced features, and ultra shallow junctions (<50nm); as a result, the challenges associated with effective surface cleaning are intensified. In addition, to insure high device performance, incorporation of alternate materials such as copper, ruthenium, and molybdenum, porous low dielectric constant SiO2-based insulators, and hafnium or zirconium oxides

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43

Zürcher, S., M. Morstein, N. D. Spencer, M. Lemberger та A. Bauer. "New Single-Source Precursors for the MOCVD of High-κ Dielectric Zirconium Silicates to Replace SiO2 in Semiconducting Devices". Chemical Vapor Deposition 8, № 4 (2002): 171. http://dx.doi.org/10.1002/1521-3862(20020704)8:4<171::aid-cvde171>3.0.co;2-z.

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44

Woitke, P., Ch Helling, G. H. Hunter, et al. "Equilibrium chemistry down to 100 K." Astronomy & Astrophysics 614 (June 2018): A1. http://dx.doi.org/10.1051/0004-6361/201732193.

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We have introduced a fast and versatile computer code, GGCHEM, to determine the chemical composition of gases in thermo-chemical equilibrium down to 100 K, with or without equilibrium condensation. We have reviewed the data for molecular equilibrium constants, kp(T), from several sources and discussed which functional fits are most suitable for low temperatures. We benchmarked our results against another chemical equilibrium code. We collected Gibbs free energies, ΔGf⊖, for about 200 solid and liquid species from the NIST-JANAF database and the geophysical database SUPCRTBL. We discussed the c

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45

Wei, Mingdeng, Kiyomi Okabe, Hironori Arakawa, and Yasutake Teraoka. "Synthesis and characterization of zirconium containing mesoporous silicates and the utilization as support of cobalt catalysts for Fischer–Tropsch synthesis." Catalysis Communications 5, no. 10 (2004): 597–603. http://dx.doi.org/10.1016/j.catcom.2004.07.014.

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46

Alonso, Gorka, Doru Michael Ştefănescu, Esther de La Fuente, Pello Larrañaga, and Ramón Suárez. "The Influence of Trace Elements on the Nature of the Nuclei of the Graphite in Ductile Iron." Materials Science Forum 925 (June 2018): 78–85. http://dx.doi.org/10.4028/www.scientific.net/msf.925.78.

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Nucleation mechanisms and the effect of minor elements added with the inoculants are still a subject of extensive research in ductile iron. Oxides, sulfides, silicates and nitrides have been reported to be nuclei for graphite precipitation. Those compounds originate both from the nodulizing treatment and the inoculation process. Previous research works have shown that titanium nitrides or carbonitrides play an active role in graphite nucleation. In order to determine the efficiency and nature of nitrides that can act as nuclei for graphite, and the possible effect of the trace elements added w

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47

Zuercher, Stefan, Marcus Morstein, Nicholas D. Spencer, Martin Lemberger та Anton Bauer. "ChemInform Abstract: New Single-Source Precursors for the MOCVD of High-ϰ Dielectric Zirconium Silicates to Replace SiO2 in Semiconducting Devices." ChemInform 33, № 43 (2010): no. http://dx.doi.org/10.1002/chin.200243013.

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48

Holtzer, M., A. Bobrowski, D. Drożyński, and J. Mocek. "Selection of Protective Coatings of Moulds for Castings of High-Manganese Cast Steel in Dependence of the Applied Moulding Sand Kind." Archives of Metallurgy and Materials 58, no. 3 (2013): 853–57. http://dx.doi.org/10.2478/amm-2013-0086.

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Abstract High-manganese cast steels are characterised by a high abrasion resistance under friction conditions with a simultaneous influence of pressure and impacts. This cast steel is especially suitable for castings of excavator’s scoops, track links, streetcars crossovers, parts of crushers and mills for braking up of hard materials [1-4]. In order to obtain high quality castings of high-manganese cast steels in moulds on the high-silica sand matrices it is necessary to apply protective coatings, which prevent a direct contact between metal and matrix (SiO2). Manganese after being poured int

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49

Park, Tae-Jin, Simon Li, and Alexandra Navrotsky. "Thermochemistry of glass forming Y-substituted Sr-analogues of titanite (SrTiSiO5)." Journal of Materials Research 24, no. 11 (2009): 3380–86. http://dx.doi.org/10.1557/jmr.2009.0413.

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Strontium titanium silicates are possible oxide forms for immobilization of short lived fission products in radioactive waste. Through beta decay, strontium decays to yttrium, and then to zirconium. Therefore, not only the stability of Sr-loaded waste forms, but also that of a potential decay product series with charge-balance in a naturally occurring mineral or a ceramic is of fundamental importance. Strontium titanosilicate (SrTiSiO5) is the Sr-analogue of titanite (CaTiSiO5). To incorporate the reaction 3Sr2+ = 2Y3+ + vacancy in the titanite composition, Y-substituted Sr-analogues of titani

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50

Monrós, G., J. Badenes, S. Meseguer, et al. "Efecto del dopado y el método de síntesis en la conductividad del silicato de circonio." Boletín de la Sociedad Española de Cerámica y Vidrio 45, no. 3 (2006): 212–17. http://dx.doi.org/10.3989/cyv.2006.v45.i3.308.

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