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Journal articles on the topic 'Vanadium silicate'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Wu, Liu Shun, Yun Zhou, and Yuan Chi Dong. "Precipitation Behavior of V-Enrichment Mineral in Steelmaking Slag Bearing Vanadium Modified by SiO₂." Applied Mechanics and Materials 295-298 (February 2013): 1729–34. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.1729.

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In order to concentrate vanadium in converter slag bearing vanadium, the effect of SiO2 on behavior of vanadium in the process of enriching was studied. Experimental results show that, during cooling, dicalcium silicate containing vanadium and phosphorus precipitate first from original slag. For original with 7% SiO2, most of vanadium dissolves in calcium silicate phase. However, the proportion of dicalcium silicate is big. For slag modified by 12% SiO2, during cooling, two vanadium-rich minerals precipitate firstly, i.e. Ca3(V,P)2O8(30-33%V2O5) and Ca3(V,P)2O8•nCa2SiO4 (14-31%V2O5), then 3CaO

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2

Gao, Minglei, Xiangxin Xue, Lanjie Li, He Yang, and Donghui Chen. "Leaching behavior and kinetics of vanadium extraction from vanadium-bearing steel slag." Metallurgical Research & Technology 116, no. 4 (2019): 407. http://dx.doi.org/10.1051/metal/2018129.

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The vanadium-bearing steel slag as solid waste is also one of valuable vanadium-containing resource. Recovering vanadium from the refractory steel slag is a great challenge in the world. A leaching process study using high concentration sodium hydroxide solution was proposed in this laboratory work. The effects of sodium hydroxide concentration, particle size, leaching temperature and the ratio of alkali to slag on the rate of vanadium leaching were determined and the leaching kinetics was presented. It indicates that the leaching rate is highly sensitive to the sodium hydroxide concentration

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3

Xu, Runsheng, Wei Wang, Weilin Chen, Bin Jia, and Zhihui Xu. "3D Microstructure and Micromechanical Properties of Minerals in Vanadium-Titanium Sinter." High Temperature Materials and Processes 38, no. 2019 (2019): 101–12. http://dx.doi.org/10.1515/htmp-2017-0181.

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AbstractTo investigate the structural characteristics and mechanical properties of minerals in vanadium-titanium sinter, the 3D microstructures of the sinter were reconstructed by serial sectioning in conjunction with computer-aided 3D reconstruction techniques The results show that hematite and magnetite in vanadium-titanium sinter will grow along the longitudinal axis direction and act as a scaffold. The size of magnetite crystals in vanadium-titanium sinter is much smaller than that in traditional sinter. The calcium ferrite in vanadium-titanium sinter is columnar-like, while that in tradit

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4

Reddy, Kondam Madhusudan, Igor Moudrakovski, and Abdelhamid Sayari. "Synthesis of mesoporous vanadium silicate molecular sieves." Journal of the Chemical Society, Chemical Communications, no. 9 (1994): 1059. http://dx.doi.org/10.1039/c39940001059.

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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

Kornatowski, Jan, Mikhail Sychev, Werner H. Baur, and Gerd Finger. "Studies of the Synthesis of Large VAPO-5 Crystals and Incorporation of Vanadium Ions." Collection of Czechoslovak Chemical Communications 57, no. 4 (1992): 767–73. http://dx.doi.org/10.1135/cccc19920767.

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The molecular sieve VAPO-5 has been synthesized hydrothermally in form of large crystals up to 660 μm in length. They have been used as a model substance for the study of vanadium incorporation into the framework. Our results show that vanadium was incorporated into the framework though in relatively small amounts. The results are in agreement with earlier findings for powder preparations of VAPO-5, except for the oxidation state of the vanadium ions and its stability. These conclusions agree with those arrived at previously for vanadium silicate KVS-5.

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7

Shiller, Alan M., and Lunjin Mao. "Dissolved vanadium in rivers: effects of silicate weathering." Chemical Geology 165, no. 1-2 (2000): 13–22. http://dx.doi.org/10.1016/s0009-2541(99)00160-6.

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8

NEUMANN, R., and M. LEVINELAD. "Vanadium silicate xerogels in hydrogen peroxide catalyzed oxidations." Applied Catalysis A: General 122, no. 2 (1995): 85–97. http://dx.doi.org/10.1016/0926-860x(94)00206-1.

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9

Desautels, Ryan D., Michael P. Rowe, John W. Freeland, Michael Jones, and Johan van Lierop. "Influence of vanadium-doping on the magnetism of FeCo/SiO2 nanoparticle." Dalton Transactions 45, no. 25 (2016): 10127–30. http://dx.doi.org/10.1039/c6dt00991c.

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10

Prakash, A. M., and Larry Kevan. "Structure and Adsorbate Interactions of Vanadium in a Vanadium Silicate (VS-1) Molecular Sieve." Journal of Physical Chemistry B 104, no. 29 (2000): 6860–68. http://dx.doi.org/10.1021/jp000987r.

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11

Mekki, A., G. D. Khattak, D. Holland, M. Chinkhota, and L. E. Wenger. "Structure and magnetic properties of vanadium–sodium silicate glasses." Journal of Non-Crystalline Solids 318, no. 1-2 (2003): 193–201. http://dx.doi.org/10.1016/s0022-3093(02)01883-5.

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12

Nielsen, Sune G., Julie Prytulak, Bernard J. Wood, and Alex N. Halliday. "Vanadium isotopic difference between the silicate Earth and meteorites." Earth and Planetary Science Letters 389 (March 2014): 167–75. http://dx.doi.org/10.1016/j.epsl.2013.12.030.

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13

Farah, Humera. "Optical Basicity Analysis of Vanadium-Bearing Silicate Glasses/Melts." Journal of the American Ceramic Society 91, no. 12 (2008): 3915–19. http://dx.doi.org/10.1111/j.1551-2916.2008.02771.x.

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14

Ghosh, A., and D. Chakravorty. "Semiconducting properties of sol‐gel derived vanadium silicate glasses." Applied Physics Letters 59, no. 7 (1991): 855–56. http://dx.doi.org/10.1063/1.105258.

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15

Feng, Xiancan, and Ruiying Yang. "Erlianite, a new vanadium- and iron-bearing silicate mineral." Mineralogical Magazine 50, no. 356 (1986): 285–89. http://dx.doi.org/10.1180/minmag.1986.050.356.13.

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AbstractErlianite was found in the Harhada iron deposit along the Jining-Erlian railway, Inner Mongolia Autonomous Region, People's Republic of China. The occurrence formed at a high pressure and low temperature and the mineral occurs sparingly, mainly on fracture surfaces on which there is evidence of movement. It is associated with quartz, magnetite, siderite, albite, stilpnomelane, minnesotaite, deerite, etc.Erlianite is black with a brownish streak, silky lustre and occur as fibres, flakes, and lath-like aggregates. The grain size is 1–2 cm. It is not fluorescent. H = 3.7, D = 3.11. Cleava

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16

Faiz, M., A. Mekki, B. S. Mun, and Z. Hussain. "Investigation of vanadium–sodium silicate glasses using XANES spectroscopy." Journal of Electron Spectroscopy and Related Phenomena 154, no. 3 (2007): 60–62. http://dx.doi.org/10.1016/j.elspec.2006.11.006.

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17

Jian, Xingwen, Jing Huang, Zhenlei Cai, Yimin Zhang, Tao Liu, and Hong Liu. "Effect of alkaline fusion on muscovite decomposition and the vanadium release mechanism from vanadium shale." Royal Society Open Science 5, no. 10 (2018): 180700. http://dx.doi.org/10.1098/rsos.180700.

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In order to figure out the decomposition of muscovite and the release mechanism of vanadium from vanadium shale in the alkaline fusion process, the process of vanadium release and roasting kinetics by alkaline fusion was studied. It was found that the addition of sodium hydroxide made the muscovite convert into the sodium silicate and gehlenite. This process promoted the dissolution of silicon and the destruction of muscovite, which could facilitate the release of vanadium. The kinetic analysis indicated that the controlling step of vanadium transformation reaction is changed from chemical rea

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18

Wu, Hao, Yali Feng, Heng Zhang, and Haoran Li. "The process of vanadium migration and silicon extraction by alkaline leaching from high silicon stone coal under reduction conditions." Metallurgical Research & Technology 116, no. 3 (2019): 313. http://dx.doi.org/10.1051/metal/2018101.

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It is difficult to utilize stone coal with a vanadium grade of below 0.7%. With the aim of effectively utilizing the silicon and vanadium in stone coal, the vanadium concentration and silicon extraction processes by alkaline leaching under reducing conditions were investigated. The effect of NaOH mass fraction, temperature and the amount of hydrazine hydrate on the leaching process was researched. Moreover, the laws of phase transformation and the migration process of vanadium were revealed. The results show that the dissolution of quartz resulted in the exposure of muscovite and goldmanite, b

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19

Teng, Xiangguo, Yongtao Zhao, Jingyu Xi, Zenghua Wu, Xinping Qiu, and Liquan Chen. "Nafion/organically modified silicate hybrids membrane for vanadium redox flow battery." Journal of Power Sources 189, no. 2 (2009): 1240–46. http://dx.doi.org/10.1016/j.jpowsour.2008.12.040.

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20

Huang, Jin, Xiqu Wang, Lumei Liu, and Allan J. Jacobson. "Synthesis and characterization of an open framework vanadium silicate (VSH-16Na)." Solid State Sciences 4, no. 9 (2002): 1193–98. http://dx.doi.org/10.1016/s1293-2558(02)01376-6.

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21

Mani, Farnaz, James A. Sawada, and Steven M. Kuznicki. "Spontaneous formation of silver nanoparticles on the vanadium silicate EVS-10." Microporous and Mesoporous Materials 224 (April 2016): 208–16. http://dx.doi.org/10.1016/j.micromeso.2015.11.032.

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22

Kumar, Pradeep, Rajiv Kumar, and Bipin Pandey. "Oxidative Organic Transformations Catalyzed by Titanium- and Vanadium-Silicate Molecular Sieves." Synlett 1995, no. 04 (1995): 289–98. http://dx.doi.org/10.1055/s-1995-4946.

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23

Rao, P. R. Hari Prasad, Rajiv Kumar, A. V. Ramaswamy, and P. Ratnasamy. "Synthesis and characterization of a crystalline vanadium silicate with MEL structure." Zeolites 13, no. 8 (1993): 663–70. http://dx.doi.org/10.1016/0144-2449(93)90140-x.

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24

Zheng, Haiyan, Weiling Zhang, Yongchun Guo, Qiangjian Gao, and Fengman Shen. "Transformation of Vanadium-Bearing Titanomagnetite Concentrate in Additive-Free Roasting and Alkaline-Pressure Leaching for Extracting Vanadium (V)." Minerals 9, no. 3 (2019): 197. http://dx.doi.org/10.3390/min9030197.

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With a view to satisfying the requirements of environmental protest and efficient usage of resources, a novel process for efficiently extracting vanadium (V), titanium (Ti), and iron (Fe) from vanadium-bearing titanomagnetite concentrate was developed. In the new process, vanadium is pre-extracted by additive-free roasting under the air atmosphere and alkaline leaching technologies. In this paper, transformation of vanadium-bearing titanomagnetite concentrate in the roasting is investigated based on thermodynamic analyses and experimental discussion. Thermodynamic analyses show that oxidation

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25

El Ghoul, J., and L. El Mir. "Photoconversion from yellow-to-green in vanadium doped zinc silicate nanophosphor material." Superlattices and Microstructures 82 (June 2015): 551–58. http://dx.doi.org/10.1016/j.spmi.2015.03.012.

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26

Tielens, Frederik, Monica Calatayud, Stanislaw Dzwigaj, and Michel Che. "What do vanadium framework sites look like in redox model silicate zeolites?" Microporous and Mesoporous Materials 119, no. 1-3 (2009): 137–43. http://dx.doi.org/10.1016/j.micromeso.2008.10.007.

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27

Mani, Farnaz, Lan Wu, and Steven M. Kuznicki. "A simplified method to synthesize pure vanadium silicate analogue of ETS-10." Microporous and Mesoporous Materials 177 (September 2013): 91–96. http://dx.doi.org/10.1016/j.micromeso.2013.02.008.

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28

Reddy, Kondam Madhusudan, Igor Moudrakovski, and Abdelhamid Sayari. "VS-12: a novel large-pore vanadium silicate with ZSM-12 structure." Journal of the Chemical Society, Chemical Communications, no. 12 (1994): 1491. http://dx.doi.org/10.1039/c39940001491.

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29

Vinogradova, O. P., I. E. Obyknovennaya, A. I. Sidorov, et al. "Synthesis and the properties of vanadium dioxide nanocrystals in porous silicate glasses." Physics of the Solid State 50, no. 4 (2008): 768–74. http://dx.doi.org/10.1134/s1063783408040288.

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30

KUMAR, P., R. KUMAR, and B. PANDEY. "ChemInform Abstract: Oxidative Organic Transformations Catalyzed by Titanium- and Vanadium- Silicate Molecular Sieves." ChemInform 26, no. 38 (2010): no. http://dx.doi.org/10.1002/chin.199538322.

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31

Qi, Yu-Han, Fei Wu, Dmitri A. Ionov, et al. "Vanadium isotope composition of the Bulk Silicate Earth: Constraints from peridotites and komatiites." Geochimica et Cosmochimica Acta 259 (August 2019): 288–301. http://dx.doi.org/10.1016/j.gca.2019.06.008.

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32

Rao, P. R. Hari Prasad, and A. V. Ramaswamy. "Catalytic hydroxylation of phenol over a vanadium silicate molecular sieve with MEL structure." Applied Catalysis A: General 93, no. 2 (1993): 123–30. http://dx.doi.org/10.1016/0926-860x(93)85188-u.

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33

Danisi, Rosa Micaela, and Frank R. Schilling. "Dehydration and lithium ion-exchange of the open framework vanadium silicate VSH-16Na." Microporous and Mesoporous Materials 319 (May 2021): 111064. http://dx.doi.org/10.1016/j.micromeso.2021.111064.

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34

McKeown, David A., Isabelle S. Muller, Keith S. Matlack, and Ian L. Pegg. "X-ray absorption studies of vanadium valence and local environment in borosilicate waste glasses using vanadium sulfide, silicate, and oxide standards." Journal of Non-Crystalline Solids 298, no. 2-3 (2002): 160–75. http://dx.doi.org/10.1016/s0022-3093(02)00945-6.

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35

Sen, T., P. R. Rajamohanan, S. Ganapathy, and S. Sivasanker. "The Nature of Vanadium in Vanado-Silicate (MFI) Molecular Sieves: Influence of Synthesis Methods." Journal of Catalysis 163, no. 2 (1996): 354–64. http://dx.doi.org/10.1006/jcat.1996.0337.

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36

REDDY, K. M., I. MOUDRAKOVSKI, and A. SAYARI. "ChemInform Abstract: VS-12: A Novel Large-Pore Vanadium Silicate with ZSM-12 Structure." ChemInform 25, no. 43 (2010): no. http://dx.doi.org/10.1002/chin.199443019.

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37

Singh, A. P., and T. Selvam. "Liquid phase oxidation of para-chlorotoluene to para-chlorobenzaldehyde using vanadium silicate molecular sieves." Applied Catalysis A: General 143, no. 1 (1996): 111–24. http://dx.doi.org/10.1016/0926-860x(96)00074-9.

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38

Zhou, Zijian, Tiantian Cao, Xiaowei Liu, et al. "Mechanistic investigation of elemental mercury adsorption over silver-modified vanadium silicate: A DFT study." Journal of Hazardous Materials 404 (February 2021): 124108. http://dx.doi.org/10.1016/j.jhazmat.2020.124108.

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39

Subrahmanyam, Ch, B. Viswanathan, and T. K. Varadarajan. "Mesoporous V-AlPO – New Partial Oxidation Catalyst." Eurasian Chemico-Technological Journal 4, no. 3 (2017): 169. http://dx.doi.org/10.18321/ectj530.

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<p>Vanadium incorporated hexagonal mesoporous aluminophosphate characteristic of MCM-41 has been synthesized. Characterization of the catalyst has been done by using low angle XRD, N<sub>2</sub> adsorption, UVVIS DRS, thermal analysis, XPS and ESR spectroscopy. These techniques confirm the presence of vanadium in both +4 and +5 oxidation states in the calcined material. Liquid phase partial oxidation of toluene has been carried out on V-AlPO using 70% TBHP and 30% H<sub>2</sub>O<sub>2</sub> as oxidants. When 70% TBHP is used as an oxidant, it resulted

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40

RAO, P. R. H. P., and A. V. RAMASWAMY. "ChemInform Abstract: Catalytic Hydroxylation of Phenol over a Vanadium Silicate Molecular Sieve with MEL Structure." ChemInform 24, no. 20 (2010): no. http://dx.doi.org/10.1002/chin.199320109.

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41

Kannan, S., T. Sen, and S. Sivasanker. "Catalytic Transformation of Ethanol over Microporous Vanadium Silicate Molecular Sieves with MEL Structure (VS-2)." Journal of Catalysis 170, no. 2 (1997): 304–10. http://dx.doi.org/10.1006/jcat.1997.1755.

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42

Selvam, T., and A. P. Singh. "Single step selective oxidation of para-chlorotoluene to para-chlorobenzaldehyde over vanadium silicate molecular sieves." Journal of the Chemical Society, Chemical Communications, no. 8 (1995): 883. http://dx.doi.org/10.1039/c39950000883.

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43

Zamani, S., M. Chiesa, V. Meynen, et al. "Accessibility and Dispersion of Vanadyl Sites of Vanadium Silicate-1 Nanoparticles Deposited in SBA-15." Journal of Physical Chemistry C 114, no. 30 (2010): 12966–75. http://dx.doi.org/10.1021/jp103794x.

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44

Singh, Bhawan, and Anil Kumar Sinha. "Synthesis of hierarchical mesoporous vanadium silicate-1 zeolite catalysts for styrene epoxidation with organic hydroperoxide." J. Mater. Chem. A 2, no. 6 (2014): 1930–39. http://dx.doi.org/10.1039/c3ta13451b.

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45

Kim, Jihoon, Jae-Deok Jeon, and Seung-Yeop Kwak. "Nafion-based composite membrane with a permselective layered silicate layer for vanadium redox flow battery." Electrochemistry Communications 38 (January 2014): 68–70. http://dx.doi.org/10.1016/j.elecom.2013.11.002.

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46

Gaddam, Anuraag, Amarnath R. Allu, Sudheer Ganisetti, et al. "Effect of Vanadium Oxide on the Structure and Li-Ion Conductivity of Lithium Silicate Glasses." Journal of Physical Chemistry C 125, no. 30 (2021): 16843–57. http://dx.doi.org/10.1021/acs.jpcc.1c05059.

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47

Neuhold, Simone, David Algermissen, Peter Drissen, et al. "Tailoring the FeO/SiO2 Ratio in Electric Arc Furnace Slags to Minimize the Leaching of Vanadium and Chromium." Applied Sciences 10, no. 7 (2020): 2549. http://dx.doi.org/10.3390/app10072549.

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Based on recently published research on leaching control mechanisms in electric arc furnace (EAF) slags, it is assumed that a FeO/SiO2 ratio of around one leads to low leached V and Cr concentrations. This ratio influences the mineral phase composition of the slag toward higher amounts of spinel and a lower solubility of calcium silicate phases by suppressing the formation of magnesiowuestite and highly soluble calcium silicate phases. To evaluate this hypothesis, laboratory and scaled up tests in an EAF pilot plant were performed on slag samples characterized by elevated V and Cr leaching and

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48

Neuhold, Simone, André van Zomeren, Joris J. Dijkstra, et al. "Investigation of Possible Leaching Control Mechanisms for Chromium and Vanadium in Electric Arc Furnace (EAF) Slags Using Combined Experimental and Modeling Approaches." Minerals 9, no. 9 (2019): 525. http://dx.doi.org/10.3390/min9090525.

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In this study, possible leaching control mechanisms for Cr and V in electric arc furnace slags were investigated by using a multi-methodological approach. Aside from chemical and mineralogical bulk analyses, special emphasis was given to surface investigations of the slags prior to and after leaching. In addition, pH dependence leaching tests were performed and the obtained data were evaluated with hydrogeochemical models. Investigations revealed that Cr and V are mainly bound in spinel and wuestite as well as minor amounts of olivine. Spinel and wuestite do not dissolve during water leaching

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49

Holycross, Megan, and Elizabeth Cottrell. "Partitioning of V and 19 other trace elements between rutile and silicate melt as a function of oxygen fugacity and melt composition: Implications for subduction zones." American Mineralogist 105, no. 2 (2020): 244–54. http://dx.doi.org/10.2138/am-2020-7013.

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Abstract Vanadium is a multivalent element that can speciate as V2+, V3+, V4+, and V5+ over a range of geologically relevant oxygen fugacities (fO2). The abundance of V in planetary materials can be exploited as a proxy for fO2 when its partitioning behavior is known. The mineral rutile (TiO2) is an important carrier of the high field strength elements Nb and Ta in the solid Earth, but it can also incorporate substantial quantities of vanadium (up to ~2000 ppm; e.g., Zack et al. 2002). However, little work has been done to systematically investigate how the partitioning of V in rutile-bearing

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50

Phukan, Prodeep, R. S. Khisti, and A. Sudalai. "Green protocol for the synthesis of N-oxides from secondary amines using vanadium silicate molecular sieve catalyst." Journal of Molecular Catalysis A: Chemical 248, no. 1-2 (2006): 109–12. http://dx.doi.org/10.1016/j.molcata.2005.12.005.

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