Literatura académica sobre el tema "Alkaline hydrothermal synthesis"

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Artículos de revistas sobre el tema "Alkaline hydrothermal synthesis"

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Hartati, Hartati, Satya Candra Wibawa Sakti, Putri Bintang Dea Firda, and Chabibah Saidah. "Optimization of Pretreatment and Hydrothermal Process of Na-X Zeolite from Kaolin and Metakaolin." Jurnal Kimia Valensi 5, no. 2 (2019): 202–10. http://dx.doi.org/10.15408/jkv.v5i2.11326.

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Synthesis of Na-X zeolite was conducted from kaolin and metakaolin. Synthesis varied in its pretreatment method and hydrothermal conditions. The pretreatment methods used were: conventional alkaline, alkaline fusion and conventional fluoride. Hydrothermal conditions for the experiments were gradual temperature 40 oC (6h), 60 oC (6h), 80 oC (12h), and constant temperature 80 oC for 24 h, 100 oC for 24 and 100 oC for 48 h. Synthesized products were characterized by X-Ray Diffraction (XRD), Fourier Transform InfraRed (FTIR), Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX), and N2 I
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Erdural, Beril K., Alp Yurum, Ufuk Bakir, and Gurkan Karakas. "Hydrothermal Synthesis of Nanostructured TiO2 Particles and Characterization of Their Photocatalytic Antimicrobial Activity." Journal of Nanoscience and Nanotechnology 8, no. 2 (2008): 878–86. http://dx.doi.org/10.1166/jnn.2008.c267.

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Nanostructured titania particles were synthesized by using hydrothermal processing and the photocatalytic antimicrobial activities were characterized. Both sol–gel synthesized and commercial TiO2 (anatase) samples were processed with two step hydrothermal treatments, under alkaline and neutral conditions. Scanning Electron Microscope (SEM) images showed that alkaline treatment yields nanofibers and lamellar structured particles from the commercial anatase and sol–gel synthesized samples respectively. Further treatment of nanofibers and nanostructured lamellar particles with distilled water res
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Yamasaki, Nakamichi, Kazunori Yokosawa, Sergiy Korablov, and Kazuyuki Tohjt. "Synthesis of Diamond Particles under Alkaline Hydrothermal Conditions." Solid State Phenomena 114 (July 2006): 271–76. http://dx.doi.org/10.4028/www.scientific.net/ssp.114.271.

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Very fine diamond powder (1-3 ~m) was readily sintered under hydrothermal conditions, with new bond formation occurring between the diamond particles in a l0M-NaOH solution at 573 K maintained at 1 GPa pressure, for 24 hours. This new bonding material can be formed by carbonization, from a chlorinated hydrocarbon such as dichloromethane and 1, 1,1–trichloroethane. The carbonized material forms a new bond between the hydrogenated diamond particles by the release of hydrogen chloride. Using Raman spectroscopy and hydrogenated cubic boron nitride substrates it was indisputably demonstrated that d
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Michailovski, Alexej, Michael Wörle, Denis Sheptyakov, and Greta R. Patzke. "Hydrothermal synthesis of anisotropic alkali and alkaline earth vanadates." Journal of Materials Research 22, no. 1 (2007): 5–18. http://dx.doi.org/10.1557/jmr.2007.0002.

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In the course of a systematic field study, anisotropic alkali and alkaline earth vanadates have been accessed through a straightforward, one-step hydrothermal process. They are formed quantitatively from V2O5 and alkali- or alkaline earth halide solutions after a few days of autoclave treatment in the temperature range between 100 and 220 °C. The presence of ionic additives leads to an interplay between the formation of isotropic crystalline phases and the production of fibrous oxide materials, such as a novel magnesium vanadate. The influence of the hydrothermal parameters and of the alkali/a
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Ariyanti, Dessy, Satriani Mo’ungatonga, and Wei Gao. "Enhanced adsorption property of TiO2 based nanoribbons produced by alkaline hydrothermal process." METANA 16, no. 2 (2020): 61–67. http://dx.doi.org/10.14710/metana.v16i2.33428.

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TiO2 is a semiconductor material with endless potential for the development of renewable energy as well as in the environmental field application. With various methods, TiO2 nanostructures with various morphology, properties and application can be developed. In this paper, the synthesis of TiO2 based nanoribbons with high adsorption property produced by alkaline hydrothermal methods were investigated. Its morphology, crystal structure and physical properties were characterized using Scanning Electron Microscope (SEM), X-ray diffraction (XRD), Fourier-transform infrared (FTIR) and Brunauer-Emme
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ZHU, GANGQIANG, HONGYAN MIAO, GUOQIANG TAN, YUN LIU, and AO XIA. "HYDROTHERMAL SYNTHESIS OF POTASSIUM BISMUTH TITANATE NANOPARTICLES." International Journal of Nanoscience 05, no. 04n05 (2006): 663–69. http://dx.doi.org/10.1142/s0219581x06004954.

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Potassium bismuth titanate nanoparticles were prepared by the hydrothermal method using Ti ( C 4 H 9 O )4 and Bi ( NO 3)3·5 H 2 O as raw materials in alkaline solution at temperatures of 160–200°C. The crystal phase, particle size, morphology and dispersion of the particles were investigated by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results show that the particles with sizes of about 50–100 nm in diameter are well-dispersed K 0.5 Bi 0.5 TiO 3 (KBT) crystals of tetragonal structure, and the alkaline concentration and the temperature of solutions have great effec
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Takahagi, Wataru, Kaito Seo, Takazo Shibuya, et al. "Peptide Synthesis under the Alkaline Hydrothermal Conditions on Enceladus." ACS Earth and Space Chemistry 3, no. 11 (2019): 2559–68. http://dx.doi.org/10.1021/acsearthspacechem.9b00108.

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Gerasimova, L. G., A. I. Nikolaev, E. S. Shchukina, and M. V. Maslova. "Preparation of Precursor for Hydrothermal Synthesis of Alkaline Titanosilicates." Theoretical Foundations of Chemical Engineering 54, no. 4 (2020): 675–80. http://dx.doi.org/10.1134/s0040579520040077.

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Kitadai, Norio. "Energetics of Amino Acid Synthesis in Alkaline Hydrothermal Environments." Origins of Life and Evolution of Biospheres 45, no. 4 (2015): 377–409. http://dx.doi.org/10.1007/s11084-015-9428-3.

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Kozerozhets, I. V., G. P. Panasyuk, E. A. Semenov, M. G. Vasil’ev, G. E. Nikiforova, and I. L. Voroshilov. "Effect of Alkaline Medium on Hydrothermal Synthesis of Boehmite." Russian Journal of Inorganic Chemistry 66, no. 3 (2021): 427–32. http://dx.doi.org/10.1134/s0036023621030104.

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Tesis sobre el tema "Alkaline hydrothermal synthesis"

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Ameh, Emmanuel Alechine. "Sustainable synthesis of BEA zeolite from fly ash-based amorphous silica." University of Western Cape, 2019. http://hdl.handle.net/11394/7522.

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Philosophiae Doctor - PhD<br>Power generation in South Africa depends majorly on the combustion of coal and the increasing demand for energy due to industrialisation and population growth signifies the continuous consumption of coal. During this process, a by-product known as coal fly ash (CFA) is generated which poses several environmental issues. The common management of the waste involves the disposal of CFA in landfills or the direct disposal to open uncultured lands, thus contaminating water bodies by the leaching of constituent CFA metals and salts that render arable land uncultiva
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Rios, Reyes Carlos A. "Synthesis of zeolites from geological materials and industrial wastes for potential application in environmental problems." Thesis, University of Wolverhampton, 2008. http://hdl.handle.net/2436/39855.

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Zeolites are among the least-known products for environmental pollution control, separation science and technology. Due to their unique porous properties, they are used in various applications in petrochemical cracking, ion-exchange and separation and removal of gases and solvents. The preparation of synthetic zeolites from chemical reagents is expensive. Therefore, in order to reduce costs, zeolite researchers are seeking cheaper aluminosilicate bearing raw materials, such as clay minerals, to produce synthetic zeolites. This research concerns the synthesis of zeolites and zeotypes derived fr
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Morgado, J?nior Edisson. "Estudo de titanatos nanoestruturados obtidos por tratamento hidrot?rmico de ?xido de tit?nio em meio alcalino." Universidade Federal do Rio Grande do Norte, 2007. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17675.

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Made available in DSpace on 2014-12-17T15:42:01Z (GMT). No. of bitstreams: 1 EdissonMJ.pdf: 6565731 bytes, checksum: 5d6fdd6db6fc25a30c6100d96fff1edc (MD5) Previous issue date: 2007-08-24<br>TiTanate NanoTubes (TTNT) were synthesized by hydrothermal alkali treatment of TiO2 anatase followed by repeated washings with distinct degrees of proton exchange. TTNT samples with different sodium contents were characterized, as synthesized and after heattreatment (200-800?C), by X-ray diffraction, scanning and transmission electron microscopy, electron diffraction, thermal analysis, nitrogen adsorptio
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ANDRADE, JULIANA MESQUITA DE. "EFFECT OF PARTICLE SIZE OF PRECURSOR, RUTILE SAND, ON THE MORPHOLOGY OF NANOSCTRUCTURED TITANATES OBTAINED THROUGH ALKALI HYDROTHERMAL SYNTHESIS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=32705@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>Várias formas de produção de material nanoestruturado têm sido estudadas, mas uma alternativa bastante atrativa e de baixo custo surgiu no final da década de 1990, se trata da síntese hidrotérmica alcalina de nanotubos monocristalinos à base de TiO2 (método de Kasuga). Diversos óxidos de Ti já foram empregados com sucesso como precursores para a produção de nanotubos/nanofios através do método de Kasuga. O uso de areias
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Lee, Yi-Chang, and 李宜璋. "High-Temperature, High-Pressure Hydrothermal Synthesis and Structural Study of Alkaline Earth Metal Borates." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/9fr67c.

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碩士<br>國立中央大學<br>化學學系<br>106<br>Three new alkaline earth borates, Ba3B10O17(OH)2 (BB1), Ba2B5O9(OH) (BB2) and Sr2.5Na0.5H0.5B6O11(OH)2·0.33H2O (SNB1), were synthesized by the high-temperature, high-pressure hydrothermal method, and their crystal structures were determined by single crystal X-ray diffraction, and further characterized by EDS, IR, and SHG. BB1 has a two-dimensional double-layer structure. The fundamental building block (FBB) is a decaborate group formed by six nonequivalent BO4 tetrahedra and four BO3 triangles. The descriptor of the FBB is 4∆6□: 2[<∆2□>- <∆2□>]. The FBBs are con
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Liu, Chia-lin, and 劉佳琳. "High-Temperature, High-Pressure Hydrothermal Synthesis, Crystal Structures and Properties of Alkaline Earth Metal-Containing Uranium Silicates." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/08791413924387255998.

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碩士<br>國立中央大學<br>化學學系<br>103<br>Three new alkaline earth metal-containing uranium silicates, Ba10[(UO2)2(Si2O7)4] (A1),K2Ca4[(UO2)(Si2O7)2] (A2) and K4Ca[(UO2)Si4O12] (A3), were synthesized by the high-temperature, high-pressure hydrothermal method, and structurally characterized by powder and single X-ray diffraction. These compounds were further characterized by EDS, PL and SHG. Compound A1 is a barium-containing uranium silicate. The crystal structure consists of Sorosilicates [Si2O7] which connect adjacent UO6 tetragonal bipyramids via four equatorial oxygen atoms to form 2D layers in ac pl
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LIN, YI-JIE, and 林以潔. "The Synthesis and Reuse of Zeolite from Incineration Fly Ash by Alkali Fusion and Hydrothermal Method." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/567e83.

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碩士<br>弘光科技大學<br>環境工程研究所<br>105<br>The annual amount of municipal solid waste incinerated in Taiwan is 6.534 million tonnes/year. There are 1.275 million tonnes/year incineration ash (including bottom ash and fly ash) and are brought out, in which the amount of fly ash is 0.34 million tonnes/year. The current major treatment method of incineration fly ash is solidification/stabilization and landfill, however, this method suffer great pressure due to the gradually full load of sanitary landfill and the leaching risk of heavy metals. As a result, the treatment and reuse of fly ash has become an u
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Cheng, Kai-Chun, and 鄭開駿. "Using Alkali Metal Titanate with the Lepidocrocite-like Layered Structure to Prepare Platelike Particles of Barium Titanate by Hydrothermal Synthesis." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/er32qv.

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碩士<br>國立臺北科技大學<br>工程科技研究所<br>102<br>Because plate-like barium titanate has special anistropic properties, we could adequately control crystalline orientation to get superior properties. In this research, BaTiO3 with platelike particle morphology was prepared by using a hydrothermal synthesis, showing a high degree of crystal-axis orientation. A titanate K0.8Ti1.73Li0.27O4 with a lepidocrocite-like layered structure was used as a precursor. In the first step, the Alkali Metal Titanate K0.8Ti1.73Li0.27O4 was synthesized by solid-state reaction method. In the second step, the layered H+ form tita
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Capítulos de libros sobre el tema "Alkaline hydrothermal synthesis"

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Yamasaki, Nakamichi, Kazunori Yokosawa, Sergiy Korablov, and Kazuyuki Tohjt. "Synthesis of Diamond Particles under Alkaline Hydrothermal Conditions." In Solid State Phenomena. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-22-1.271.

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Kim, Yun Jong, Sang Bae Kim, Keon Joon Cho, Taik Nam Kim, and Sung Baek Cho. "Synthesis and Characterization of Bioactive Sodium Titanate Nanotube by Alkali Hydrothermal Treatment." In Solid State Phenomena. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-31-0.1277.

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Actas de conferencias sobre el tema "Alkaline hydrothermal synthesis"

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Chen, Xi, Tie-Jun Zhu, and Xin-Bing Zhao. "Controllable synthesis of PbTe nanosheets via an alkaline hydrothermal method." In 2010 IEEE 3rd International Nanoelectronics Conference (INEC). IEEE, 2010. http://dx.doi.org/10.1109/inec.2010.5424963.

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Jahro, Iis, Asep Nugraha, and Nurfajriani Nurfajriani. "Synthesis of A and X Zeolites from Non Magnetic Ash of Rice Husks Through the Hydrothermal Process in the Alkaline Bases Condition." In Proceedings of The 5th Annual International Seminar on Trends in Science and Science Education, AISTSSE 2018, 18-19 October 2018, Medan, Indonesia. EAI, 2019. http://dx.doi.org/10.4108/eai.18-10-2018.2287299.

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Xiong, Kun, Lin Zhou, Xianming Zhang, Xiaoshu Lv, and Guangming Jiang. "Template-Free Hydrothermal Synthesis of Nanorod (RuTi)O2 Composite Cathode for Hydrogen Evolution in Alkali Solution." In 2015 International Symposium on Material, Energy and Environment Engineering. Atlantis Press, 2015. http://dx.doi.org/10.2991/ism3e-15.2015.19.

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