Relevant bibliographies by topics / Metoda sol-gel

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Academic literature on the topic 'Metoda sol-gel'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Metoda sol-gel"

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Sondari, D. "Pengaruh Metoda Preparasi Terhadap Aktivitas Katalis Nikel Dengan Penyangga Titania." REAKTOR 6, no. 1 (June 13, 2017): 44. http://dx.doi.org/10.14710/reaktor.6.1.44-47.

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Preparasi katalis logam aktif nikel dengan bahan penyangga titania dapat dilakukan menggunakan metode impregnasi, sol-gel dan ko-presipitasi dengan kandungan logamaktif 20; 22,5 dan 25% berat. Dari hasil uji aktivitas katalis menggunakan reaktor skala 20 ml menunjukkan bahwa metode sol-gel memberikan aktivitas yang paling maksimal dengan terjadinya penurunan bilangan iodium dari 60,98 menjadi 41,31 dan luas permukaan spesifik maksimal 18,65 gr/m2 pada konsentrasi 22,5%. Dari analisa pola difraksi sinar-X pada metoda sol-gel, tampak adanya oksida logam nikel pada 2Ө = 43,27 yang intensitasnya paling rendah disbanding dua metoda lain, impregnasi dank ko-presipitasi. Puncak logam nikel teridentifikasi pada 2Ө = 44,50 menunjukkan adanya logam aktif nikel Ni (100) walaupun intensitasnya masih rendah, telah menyebabkan luas permukaan spesifik katalis pada metoda sol-gel lebih besar daripada metoda impregnasi dank o-presipitasi. Kata kunci : katalis, penyangga, impregnasi, sol-gel, ko-presipitasi, metoda, altivitas
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G.S, Sulistioso, Setyanto T., Henny Purwaningsih, Susanti Susanti, and A. Sitompul. "Pelapisan Hidroksiapatit Pada Logam KS-01 Dengan Metoda Sol – Gel." Jurnal Kimia dan Kemasan 33, no. 1 (April 28, 2011): 90. http://dx.doi.org/10.24817/jkk.v33i1.1833.

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Rahmayeni, Emriadi, Eli Susanti, and Delfi Silvia. "PEMBUATAN LAPISAN TIPIS DAN SERBUK TIMBAL TITANAT DENGAN METODA SOL GEL." Jurnal Riset Kimia 1, no. 1 (February 12, 2015): 31. http://dx.doi.org/10.25077/jrk.v1i1.62.

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ABSTRACT Thin layer and powder of lead titanate had been prepared using lead acetate and tetraethylorthotitanate as precursor by sol gel process. The thin layer of composite was obtain through layering the composite on glass substrate. Both thin layer and powder were calcined between 100-700°C and were characterized by Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), UV and Fourier Transform Infra Red (FTIR). The diffraction pattern show that the structure of composite on glass substrate is amorf at 500°C and could not identified at 700°C while the powder is crystalline at 500 and 700°C. FTIR spectra shown the Ti-O peak at 1407 cm-1, the Pb-O and Pb-O-Ti peaks at 718 and 600 cm-1, respectively.
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Ningsih, Sherly Kasuma Warda. "SINTESIS DAN KARAKTERISASI NANOPARTIKEL ZnO DOPED Cu2+ MELALUI METODA SOL-GEL." EKSAKTA: Berkala Ilmiah Bidang MIPA 18, no. 02 (November 30, 2017): 39–51. http://dx.doi.org/10.24036/eksakta/vol18-iss02/51.

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Penelitian mengenai sintesis nanopartikel ZnO undoped dan doped Cu2+ telah dilakukan melalui metoda sol-gel, dengan menggunakan zink (II) asetat dihidrat sebagai prekursor, isopropanol sebagai pelarut, dan monoethanolamin sebagai zat aditif. Tujuan penelitian ini adalah menentukan struktur, ukuran partikel, spektra FTIR dan band gap, serta menjelaskan morfologi permukaan ZnO doped Cu2+. Pada penelitian ini dilakukan penambahan dopan Cu2+ dengan variasi konsentrasi 3%.. Nanopartikel ZnO undoped dan doped Cu2+ diperoleh dari hasil pengeringan sol Zn(OH)2 pada suhu 110? selama 1 jam dan dikalsinasi pada suhu 500? selama 2 jam. Nanopartikel ZnO undoped dan doped Cu2+ dikarakterisasi menggunakan FTIR, UV-DRS, XRD, dan SEM. Analisa spektra FTIR menunjukkan serapan pada bilangan gelombang 475-575 cm-1 untuk ZnO undoped, regangan Zn-O dalam ZnO doped Cu2+ pada daerah bilangan gelombang 470 cm-1 , dan regangan Zn-O-Cu pada daerah bilangan gelombang 564 cm-1. Nilai band gap ZnO undoped dan doped Cu2+ yaitu ZnO undoped (3,1 eV), dan ZnO doped Cu2+ 3% (3,00 eV). Analisa menggunakan XRD menunjukkan beberapa puncak spesifik ZnO undoped dan doped Cu2+ dengan struktur kristal heksagonal wurzite dan ukuran kristal ZnO undoped berkisar antara 38-74 nm, ZnO doped Cu2+ 3% dan berkisar antara 45-101 nm. Mikrostruktur ZnO doped Cu2+ memberikan bentuk morfologi bulat (spheric) dengan ukuran diameternya sekitar 1-2 .
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ZIELECKA, MARIA, REGINA JEZIORSKA, ELZBIETA BUJNOWSKA, BLANKA KEPSKA, and MAGDALENA WENDA. "Silica nanofillers with immobilized silver or copper nanoparticles synthesized by sol-gel method." Polimery 57, no. 3 (March 2012): 177–82. http://dx.doi.org/10.14314/polimery.2012.177.

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REISFELD, RENATA. "Doped polymeric systems produced by sol-gel technology: optical properties and potential industrial applications." Polimery 51, no. 02 (February 2006): 95–103. http://dx.doi.org/10.14314/polimery.2006.095.

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Berghuis, Nila Tanyela, Muhammad Ali Zulfikar, and Deana Wahyuningrum. "Sintesis Membran Komposit Berbahan Dasar Kitosan dengan Metoda Sol-Gel sebagai Membran Fuel Cell Pada Suhu Tinggi." al-Kimiya 7, no. 1 (September 12, 2020): 35–46. http://dx.doi.org/10.15575/ak.v7i1.6614.

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Kitosan adalah polisakarida kationik yang terdiri dari residu glukosamin dan N-asetil glukosamin yang terikat oleh ikatan β-1,4 glikosidik. Keberadaan gugus alkohol bebas pada kerangka kitosan dapat dimanfaatkan sebagai gugus pembentuk matrik dengan atom lainnya, dalam penelitian ini adalah silika (Si). Kondisi ini dapat dimanfaatkan sebagai bahan dasar sintesis membran sel bahan bakar (Fuel Cell). Sintesis kitosan dilakukan dengan mendeasetilasi kitin yang bersumber dari limbah kulit udang. Membran komposit kitosan-TEOS (Tetraetilortosilikat) telah berhasil disintesis dengan menggunakan variasi nilai konsentrasi kitosan terhadap jumlah TEOS. Membran komposit kitosan-TEOS disintesis dengan menggunakan metoda sol-gel dan pembalikan fasa. Kitosan dan membran komposit yang dihasilkan kemudian dikarakterisasi sifat kimia dan fisika nya yaitu penentuan derajat deasetilasi, penentuan berat molekul rata-rata (Mv), persen kelarutan, analisis struktur dengan menggunakan FTIR, uji ketahanan suhu, analisis morfologi dengan menggunakan SEM, dan kapasitas pertukaran ion (KPI). Hasil karakterisasi menunjukkan derajat deasetilasi kitosan sebesar 79,31% dengan nilai berat molekul rata-rata (Mv) 1,16 x 107 g/mol dan persen kelarutan 1% (v/v) asam asetat. Hasil pengukuran FTIR membran menunjukkan terdapat puncak 1377 cm-1 yang merupakan puncak dari eter siklik, puncak 3454 cm-1 yang merupakan puncak dari O-H, puncak pada 1662-1666 cm-1 yang merupakan puncak dari C=O asetamida, dan 3454-3500 cm-1 yang merupakan puncak N-H, sedangkan puncak 904 cm-1 dan 1091,7 cm-1 menunjukkan adanya ikatan silang antara Si-OH dan Si-O-C (alifatik). Uji ketahanan membran terhadap suhu sebesar 120oC sedangkan nilai konduktivitas ionik terbesar dimiliki oleh tipe membran CTSN-1,5 dengan nilai 0,114 meq/g. Hasil analisis SEM menunjukkan bahwa membran mempunyai struktur yang rapat.
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Ulfah, Maria, and Subagjo Subagjo. "PENGARUH PERBEDAAN SIFAT PENYANGGA ALUMINA TERHADAP SIFAT KATALIS HYDROTREATING BERBASIS NIKEL-MOLIBDENUM." Reaktor 14, no. 2 (September 4, 2012): 151. http://dx.doi.org/10.14710/reaktor.14.2.151-157.

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EFFECT OF ALUMINA SUPPORT PROPERTIES ON THE NICKEL-MOLIBDENUM BASE HYDROTREATING CATALYST. Effect of surface characteristics of three species of synthesized γ-alumina (alumina-1, alumina-2 and alumina-3) on characteristics NiMo catalysts has been studied. Those aluminas are derived from boehmite Catapal B by varying rasio mol nitric acid to boehmite. A sol-gel method is used to synthesize γ-Al2O3 support. The Nitrogen adsorption, X-ray diffraction (XRD), Temperature Programmed Reduction (TPR) of H2, Temperature Programmed Desorption (TPD) of NH3, and mechanical strength are used to characterize the supports and catalysts. The results showed that the surface area alumina affects the formation of crystalline MoO3 in the NiMo catalyst, while γ-Al2O3-3 support which has the highest surface area (about 195 m2/g) compared to the other two types of alumina (>195 m2/g) does not have a crystalline MoO3. The formation of crystalline MoO3 is not influenced by the acidity alumina. Based on the results of XRD, it is indicated that the supported alumina-3 NiMo catalyst (having the highest acid strength) shows that there is no presence of crystalline MoO3. Pore size distribution of support did not change significantly after the deposition of Ni and Mo oxides. Mechanical strength of support also affects the strength NiMo catalyst. Support alumina-3 which has the highest mechanical strength gives the mechanical strength of the highest NiMo catalyst. Pengaruh sifat penyangga γ-alumina hasil pengembangan (alumina-1, alumina-2 dan alumina-3) pada karakter katalis hydrotreating nikel-molibdenum (NiMo) telah dipelajari. Ketiga jenis γ-alumina diturunkan dari boehmite “Catapal B” dengan menvariasikan nisbah mol asam nitrat terhadap boehmite. Pembuatan γ-alumina menggunakan metoda sol-gel. Adsorpsi Nitrogen, X-ray difraksi (XRD), Temperature Programmed Reduction (TPR) H2, Temperature Programmed Desorption (TPD) NH3, dan kekuatan mekanik digunakan untuk mengkarakterisasi penyangga dan katalis. Hasil penelitian menunjukan bahwa luas permukaan alumina mempengaruhi pembentukan kristalin MoO3 dalam katalis NiMo. Pada penyangga alumina-3 yang memiliki luas permukaan yang paling tinggi (sekitar 195 m2/g) di banding dua jenis alumina lainnya (>195 m2/g) tidak memiliki kristalin MoO3. Pembentukan kristalin MoO3 tidak dipengaruhi oleh sifat keasaman alumina. Berdasarkan hasil XRD ditunjukan bahwa pada katalis NiMo berpenyangga alumina-3 (memiliki kekuatan asam yang paling tinggi) tidak terdapat adanya kristalin MoO3. Distribusi ukuran pori peyangga tidak berubah signifikan setelah deposisi oksida Ni dan Mo. Kekuatan mekanik penyangga mempengaruhi pula kekuatan katalis NiMo. Penyangga γ Al2O3-3 yang memiliki kekuatan mekanik yang paling tinggi memberikan kekuatan mekanik katalis NiMo yang tertinggi.
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Zhang, J. "Synthesis and characterization of Mn0.3Zn0.7Fe2O4 ferrite with sol-gel combustion method." Materiali in tehnologije 54, no. 5 (October 16, 2020): 621–25. http://dx.doi.org/10.17222/mit.2019.225.

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M. Jabbar, Hashim. "Optical Properties of vanadium pentoxide prepared by sol gel method." Journal of Kufa Physics 10, no. 1 (June 10, 2018): 1–7. http://dx.doi.org/10.31257/2018/jkp/100101.

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Dissertations / Theses on the topic "Metoda sol-gel"

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Baráček, Jan. "Aplikace metody sol-gel na syntézu dikalciumsilikátu a jeho tuhých roztoků." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-233387.

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The subject of this doctoral thesis was to elucidate the mechanism of reaction leading to the formation of dicalcium silicate (C2S), its solid solutions and other phosphatic calcium silicate phases using the sol-gel method of synthesis. SiO2 (Tosil A), CaO (calcium nitrate tetra-hydrate) and H3PO4 (as a source of P2O5) were used as starting materials. Series of samples with different content of P2O5 were synthesized. The characterization of Tosil A and samples was based on the following methods: DTA/TGA and EGA, XRD and SEM and EDS analy-ses. It is known, that phosphorous oxide can enter the structure of C2S and possibly form solid solutions and different phosphatic calcium silicate phases in C2S–C3P system. Depending on the P2O5 concentration in mixtures, three distinct phases are formed: larnite (2CaO•SiO2), Ca14,92(PO4)2,35(SiO4)5,65 and 5CaO•SiO2•P2O5, as detected by XRD. Local microanalysis de-monstrated the presence of calcium phosphate epicenters (C3P) containing SiO2, calcium sili-cate (C2S) zones with minimum content of P2O5 and intermediary areas of various phosphatic calcium silicates. The formation of two distinct islets of C2S and C3P is due the affinity of acid oxides (SiO2, P2O5) towards the basic one (CaO) during the sol-gel process. Then, the formation of various phosphatic calcium silicates results from the diffusion of P2O5 and SiO2 towards calcium silicate and calcium phosphate, respectively.
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Doboš, Petr. "Syntéza pěnové biokeramiky pro potenciálně lékařské aplikace." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-216906.

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Cílem práce byla příprava porézních vzorků HAP pro potenciálně medicínské aplikace. HAP byl připraven metodou sol-gel a precipitační. Vzorky HAP byly podrobeny analýze FTIR, XRD, SEM. Takto připravený HAP byl napěněn pomocí houbové metody s jasně definovanými póry a pomocí polymerního a skleněného expanzelu s různou distribucí a velikostí pórů. U výsledných napěněných vzorků byla vyhodnocena mikrostruktura a povrchová analýza pomocí SEM, zjištěna porozita pomocí Hg porozimetru a sledována bioaktivita in vitro v SBF. Byly zjištěny jasně definované makro, mezo a mikro póry při různé distribuci. U houbové metody pomocí sol-gel došlo k vytvoření jasně definovaných a pravidelných pórů s monodisperzní porozitou. Dominantní velikost póru byla stanovena v rozmezí 1–5 µm. Celková porozita byla stanovena na 63,5 % s celkovým povrchem 3,048 1 m/g. Precipitační metodou s polymerním expanzelem došlo k polydisperznímu rozložení pórů s třemi hlavními fázemi v rozmezí: 50–100 µm, 5–10 µm a 0,5–1 µm. Celková porozita byla stanovena na 67,6 % s celkovým povrchem 19,090 3 m/g. Bioaktivita výsledných napěněných vzorků in vitro byla sledována po dobu 7 dnů v připraveném SBF. Při napěnění sol-gel houbovou metodou nevznikla výsledná bioaktivní vrstva. U precipitační metody napěněné pomocí polymerního expanzelu vznikla nepravidelná bioaktivní vrstva. Výsledky byly naměřeny pomocí SEM analýzy.
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Nowak, Petr. "Sledování vývoje pevnosti mezifáze sklo-keramika při její chemické modifikaci." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216346.

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Diploma thesis deals with the research of oxide interphase of ceramic composite in dependence on the amount of precursor used in sol – gel method for deposition of titanium dioxide thin layer on corundum.
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Šenk, Vít. "Keramické porézní materiály - příprava, struktura a vlastnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229407.

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The thesis targets to preparation a foam ceramics suitable for supporting, catalytic and biological applications. Theoretical part deals with methods of preparation, properties and applications of foam ceramics. Experimental part of work is focused on preparation foams by template method using polymer foam. Properties of ceramic slurry were evaluated according to discharge time of Ford cup. Foam structure is assessed using images and mechanical properties are judged by compressive tests.
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Ivan, Stijepović. "Dobijanje lantan-galata za primenu u gorivnim ćelijama." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2012. https://www.cris.uns.ac.rs/record.jsf?recordId=85671&source=NDLTD&language=en.

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U ovom radu su sintetisani prahovi na bazi lantan-galata, citratnom sol-gelmetodom i hemijskom sintezom u parnoj fazi (CVS), a njihovim presovanjemi sinterovanjem su dobijeni keramički uzorci kontrolisane mikrostrukture. Ciljdisertacije je bio dobijanje guste keramike koja bi mogla da se primeni kaojonski provodni elektrolit u gorivnim ćelijama sa čvrstim elektrolitom (SOFC),a koje bi radile na srednjim temperaturama od 500–700 °C (IT-SOFC). Po prviput su sintetisani nanoprahovi lantan-galata u gasnoj fazi i utvrđeno je da ovakodobijeni polazni prahovi, zbog svojih superiornih karakteristika omogućavajusnižavanje temperature sinterovanja za 150 °C, što je veoma povoljno kako sastanovišta dizajniranja mikrostrukture, tako i zbog uštede energije u procesuproizvodnje gorivnih ćelija. Ipak, zbog nedovoljne kontrole hemijskog sastavai stehiometrije sintetisanih prahova, što je i najveći nedostatak CVS metodedobijanja perovskitnog LaGaO3, nije bilo moguće dobiti keramiku koja bi ispunjavala zahteve za primenu u SOFC. S druge strane, citratna sol-gel metodapruža veliku kontrolu pomenutih parametara zbog čega je bila moguća sintezačitavog niza čvrstih rastvora lantan-galata. Ovom metodom su tako sintetisaničist lantan-galat (LG) i dopirani prahovi kod kojih je deo lantana supstituisanstroncijumom, a deo galijuma magnezijumom: La0,85Sr0,15Ga0,85Mg0,15O3-La1-xSrxGa0,8Mg0,2O3-, gde je x = 0,10, 0,15 ili 0,20 (LSGM). Svi ovako sintetisaniprahovi su zahtevali naknadnu kalcinaciju na 900 °C, ali su potrebnegustine (>95% teorijske gustine) postignute sinterovanjem na temperaturiod 1450 °C već nakon 2 h, što je izuzetno kratko imajući u vidu literaturnepodatke. Takođe, sinterovani uzorci su po faznom sastavu bili čista LSGMkeramika, a impedansna merenja su pokazala da je najveću provodljivost imaouzorak La0,85Sr0,15Ga0,8Mg0,2O3-. Ovaj sastav je dalje korišćen u cilju proveremogućnosti za dodatno povećanje provodljivosti te su pripremljeni i uzorci kod kojih je izvršena parcijalna supstitucija magnezijuma sa niklom ili kobaltom:La0,85Sr0,15Ga0,8Mg0,2-yMyO3-, gde je M = Ni ili Co, a y = 0,03 ili 0,05 (LSGMN iLSGMC). Pokazano je da dodatak male količine prelaznih metala značajno utičena mehanizam provođenja, ali da je na višim temperaturama jonska provodljivosti dalje dominantna. Konstatovano je da se dodavanjem male količine Ni ili Co uLSGM mogu dobiti materijali koji bi služili kao elektroliti u IT-SOFC, pri čemu jepotencijal nikla kao dopanta nešto veći nego kobalta.
Powders based on lanthanum-gallate have been synthesised in this work by using citrate sol-gel method in the liquid phase and by chemical vapour synthesis (CVS). As-synthesised powders were calcined, pressed and finally sintered in order to produce ceramic samples with controlled microstructure. The main goal of this dissertation has been obtaining of dense ceramics for application in ion conducting electrolyte for solid oxide fuel cells working at 500–700 °C (IT-SOFC). Lanthanum-gallate nanopowders have been synthesised in the gas phase for the first time and it has been determined that these starting powders posses superior properties which could lower down the sintering temperature for about 150 °C. This is very significant considering microstructure design, but also high energy consumption during the manufacturing process of fuel cells. However, it has not been possible to obtain ceramics with exact properties needed for SOFC application using CVS due to the lack of control of chemical composition and stoichiometry of the as-synthesised powders, which are the main drawbacks of this method. On the other hand, citrate sol-gel method offered a possibility to precisely control aforementioned parameters which enabled synthesis of a whole range of lanthanum-gallate sollid solutions. So, pure perovskite lanthanum-gallate (LG) has been synthesised by using this liquid phase method, but also doped powders where part of lanthanum and gallium was supstituted with strontium and magnesium, respectively: La0,85Sr0,15Ga0,85Mg0,15O3- and La1-xSrxGa0,8Mg0,2O3-, where x = 0.10, 0.15 or 0.20 (LSGM). Calcination at 900 °C was necessary step during the processing of these sol-gel powders but the sintering time at 1450 °C was only 2 h which is quite short in comparison with available literature data. Additionaly, the sintered samples were phase pure LSGM ceramics and impedance measurement showed that the highest conductivity had sample La0,85Sr0,15Ga0,8Mg0,2O3-. Accordingly, this composition has been used to check the possibility of further improvement of conductivity. A set of new samples has been prepared where one part of magnesium has been substituted with nickel or cobalt: La0,85Sr0,15Ga0,8Mg0,2-yMyO3-, where M = Ni or Co and y = 0.03 or 0.05 (LSGMN i LSGMC). It has been shown that addition of small amount of transition metals significantly influences conduction mechanism, but at higher temperatures the ionic conductivity is still dominant. It has been found that electrolyte materials for IT-SOFCs could be obtained by incorporation of small quantities of Ni or Co into LSGM and that nickel is more promissing for this purpose than cobalt.
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Marzini, Michael. "Automatisierung und Optimierung des Sol-Gel-Prozesses." [S.l. : s.n.], 2006.

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Sparks, Jeffery Scott. "Production of mullite fibers by the sol-gel method." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/9135.

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Čižauskaitė, Sigutė. "Sol-gel synthesis of perovskite structure aluminates and cobaltates." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20091202_112230-17664.

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In the present thesis the reported results let us to conclude that the developed aqueous sol–gel procedure could be successfully used for the low-temperature synthesis of monophasic perovskite gadolinium aluminate ceramics. It was also demonstrated that the selection of raw materials for the sol–gel processing should be done with care. Monophasic perovskite structure gadolinium aluminate GdAlO3 has been synthesized by sol gel synthesis method at 1000 oC, using gadolinium oxide as gadolinium raw material and 1.2 ethanediol, natural tartaric acid, citric acid or mixture of citric acid and ethanolamine as complexing agent. According to the XRD results, the Gd2O3 instead of Gd(NO3)36H2O preferably should be used as starting material for the preparation of GdAlO3. Monophasic perovskite structure strontium substituted gadolinium aluminate Gd0.90Sr0.10AlO3– was synthesized by the same sol gel synthesis method at 1000 oC, using gadolinium oxide as gadolinium raw material, strontium nitrate as strontium ion source and EDTA as complexing agent. It was proved that better gadolinium ion source is gadolinium oxide than gadolinium nitate hexahydrate, better complexing agent – EDTA than natural tartaric acid in the synthesis of GdAlO3 and strontium substituted Gd1–xSrxAlO3– (x = 0.10, 0.25, 0.50, 0.75) samples. According to the XRD results, increasing amount of strontium reduces amount of peaks of perovskite structure gadolinium aluminate. Besides, 800 ºC temperature is too low for the... [to full text]
Šiame darbe vienfazis perovskito struktūros gadolinio aliuminatas GdAlO3 zolių-gelių metodu buvo gautas 1000 oC temperatūroje, gadolinio jonų šaltiniu naudojant Gd2O3, kompleksus sudarančiu reagentu – 1,2 etandiolį, natūralią vyno rūgštį, citrinų rūgštį arba citrinų rūgšties ir etanolamino mišinį. Sintetinant GdAlO3, gautų tyrimų rezultatai parodė, kaip yra svarbu zolių gelių procese pasirinkti tinkamas pradines medžiagas bei kompleksus su metalais sudarančius reagentus: gadolinio jonų šaltiniu naudojant Gd2O3 buvo gauti geresni rezultatai nei naudojant Gd(NO3)3•6H2O, vienfazis GdAlO3 gali būti sėkmingai susintetintas kompleksus sudarančiu reagentu naudojant tiek natūralią vyno rūgštį, tiek 1,2 etandiolį, tiek citrinų rūgštį, tiek citrinų rūgšties ir etanolamino mišinį. Nustatyta, kad sintetinant stronciu pakeistus gadolinio aliuminatus Gd1–xSrxAlO3– (x = 0,10, 0,25, 0,50, 0,75), tinkamesnis gadolinio jonų šaltinis yra gadolinio oksidas nei gadolinio nitratas heksahidratas, kompleksus sudarantis reagentas – EDTA nei natūrali vyno rūgštis. Vienfazis perovskito struktūros stronciu pakeistas gadolinio aliuminatas Gd0,90Sr0,10AlO3– buvo susintetintas zolių-gelių metodu 1000 oC temperatūroje, gadolinio jonų šaltiniu naudojant Gd2O3, stroncio jonų šaltiniu – Sr(NO3)2, kompleksus sudarančiu reagentu – EDTA. Be to, 800 ºC iškaitinimo temperatūra yra per maža šiems junginiams sintetinti. Pirmą kartą pasiūlytas vandeninis zolių gelių metodas lantano ir gadolinio kobaltatams... [toliau žr. visą tekstą]
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9

McAughey, Kevin. "Fabrication of high temperature piezoelectric ceramics by sol gel method." Thesis, University of Warwick, 2011. http://wrap.warwick.ac.uk/55918/.

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This research covers the fabrication of piezoelectric ceramics using a sol gel method. Commercial high temperature transducers are typically fabricated by a milled oxide method. The sol gel method presented here produced purer samples that can be prepared at lower temperatures than conventional milled oxide preparations. The performance of the samples as piezoelectric transducers was also investigated, with the samples produced by sol gel method exceeding the piezoelectric response of the commercial samples.
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Yang, Lan Vahala Kerry. "Fabrication and characterization of microlasers by the sol-gel method /." Diss., Pasadena, Calif. : California Institute of Technology, 2005. http://resolver.caltech.edu/CaltechETD:etd-06032005-115306.

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Books on the topic "Metoda sol-gel"

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Głuszek, Józef. Tlenkowe powłoki ochronne otrzymywane metodą sol-gel. Wrocław: Oficyna Wydawnicza Politechniki Wrocławskiej, 1998.

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Hasegawa, George. Studies on Porous Monolithic Materials Prepared via Sol–Gel Processes. Tokyo: Springer Japan, 2013.

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Studies on Porous Monolithic Materials Prepared via Sol–Gel Processes. Springer, 2012.

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Hasegawa, George. Studies on Porous Monolithic Materials Prepared via Sol–Gel Processes. Springer, 2014.

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Book chapters on the topic "Metoda sol-gel"

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Martucci, Alessandro. "Characterization Methods." In Sol-Gel Nanocomposites, 83–108. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-1209-4_4.

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Johnson, D. W. "Sol-Gel." In Inorganic Reactions and Methods, 9–10. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145333.ch5.

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Zhu, Yimei, Hiromi Inada, Achim Hartschuh, Li Shi, Ada Della Pia, Giovanni Costantini, Amadeo L. Vázquez de Parga, et al. "Sol-Gel Method." In Encyclopedia of Nanotechnology, 2459–70. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-90-481-9751-4_359.

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Dave, Bakul C., and Sarah B. Lockwood. "Sol–Gel Method." In Encyclopedia of Nanotechnology, 3748–61. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-9780-1_359.

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Deshmukh, Rupali, and Markus Niederberger. "Nonhydrolytic Sol-Gel Methods." In The Sol-Gel Handbook, 29–70. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527670819.ch02.

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Zamboulis, Alexandra, Olivier Dautel, and Joël J. E. Moreau. "Synthetic Self-Assembly Strategies and Methods." In The Sol-Gel Handbook, 121–64. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527670819.ch04.

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Almeida, Rui M., and Jian Xu. "Characterization of Sol-Gel Materials by Optical Spectroscopy Methods." In The Sol-Gel Handbook, 713–44. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527670819.ch22.

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Friberg, Stig E., and Ali Amran. "The Microemulsion/Gel Method." In Sol-Gel Processing and Applications, 17–25. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2570-7_2.

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Jasiorski, Marek, Beata Borak, Anna Łukowiak, and Agnieszka Baszczuk. "Active Sol-Gel Materials." In Sol-Gel Methods for Materials Processing, 125–37. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8514-7_8.

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Hüsing, Nicola. "Design of Inorganic and Inorganic-Organic Hybrid Materials by Sol-Gel Processing – From Nanostructures to Hierarchical Networks." In Sol-Gel Methods for Materials Processing, 91–104. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8514-7_6.

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Conference papers on the topic "Metoda sol-gel"

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Rantala, Juha T., Terho K. Kololuoma, and L. Kivimaki. "Combinatorial methods in sol-gel technology." In Symposium on Integrated Optoelectronics, edited by Ghassan E. Jabbour. SPIE, 2000. http://dx.doi.org/10.1117/12.385420.

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Chen, Bing-Huei, Long Wu, Ming-Cheng Chure, and Yeong-Chin Chen. "Fabrication of PZT BY sol-gel method." In 2010 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA 2010). IEEE, 2010. http://dx.doi.org/10.1109/spawda.2010.5744326.

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Guglielmi, Massimo. "Thin Coatings By The Sol-Gel Method." In 1989 Intl Congress on Optical Science and Engineering, edited by Giancarlo C. Righini. SPIE, 1989. http://dx.doi.org/10.1117/12.961436.

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Chen, Ching J., Yuhuan Xu, and John D. Mackenzie. "Ferroelectric coatings by the sol-gel method." In Orlando '90, 16-20 April, edited by Rudolf Hartmann, M. J. Soileau, and Vijay K. Varadan. SPIE, 1990. http://dx.doi.org/10.1117/12.21662.

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Karasiński, Paweł, and Roman Rogoziński. "RIB waveguides fabricated by sol-gel method." In SPIE Proceedings, edited by Jan Wójcik and Waldemar Wójcik. SPIE, 2007. http://dx.doi.org/10.1117/12.739561.

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Laczka, Maria, J. Najman, D. Wegrzynek, and Marek Wychowaniec. "GRIN glasses prepared by sol-gel method." In Gradient-Index Optics in Science and Engineering, edited by Maksymilian Pluta and Mariusz Szyjer. SPIE, 1996. http://dx.doi.org/10.1117/12.255522.

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Afrin, Samia, John Dagdelen, Zhiwen Ma, and Vinod Kumar. "Application of Sol-Gel Method as a Protective Layer on a Specular Reflective Surface for Secondary Reflector in a Solar Receiver." In ASME 2016 10th International Conference on Energy Sustainability collocated with the ASME 2016 Power Conference and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/es2016-59046.

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Highly-specular reflective surfaces that can withstand elevated-temperatures are desirable for many applications including reflective heat shielding in solar receivers and secondary reflectors, which can be used between primary concentrators and heat collectors. A high-efficiency, high-temperature solar receiver design based on arrays of cavities needs a highly-specular reflective surface on its front section to help sunlight penetrate into the absorber tubes for effective flux spreading. Since this application is for high-temperature solar receivers, this surface needs to be durable and to maintain its optical properties through the usable life. Degradation mechanisms associated with elevated temperatures and thermal cycling, which include cracking, delamination, corrosion/oxidation, and environmental effects, could cause the optical properties of surfaces to degrade rapidly in these conditions. Protected mirror surfaces for these applications have been tested by depositing a thin layer of SiO2 on top of electrodeposited silver by means of the sol-gel method. To obtain an effective thin film structure, this sol-gel procedure has been investigated extensively by varying process parameters that affect film porosity and thickness. Endurance tests have been performed in a furnace at 150°C for thousands of hours. This paper presents the sol-gel process for intermediate-temperature specular reflective coatings and provides the long-term reliability test results of sol-gel protected silver-coated surfaces.
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Para, Touseef Ahmad, Hilal Ahmad Reshi, and Vilas Shelke. "Synthesis of ZnSnO3 nanostructure by sol gel method." In DAE SOLID STATE PHYSICS SYMPOSIUM 2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4947656.

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Yang, Q. Z., and B. H. Chua. "Metrics-Based Sustainability Evaluation of Manufacturing Technologies: Surface Coating Case Study." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87027.

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Sustainability evaluation of manufacturing technologies is a vital part of decision process in sustainable manufacturing, particularly for decisions on transfer/adoption of new sustainable manufacturing innovations. This paper highlights a study on metrics-based sustainability evaluation of technologies in manufacturing, with emphasis on the technical, economical and environmental sustainability assessments. On the basis of three types of sustainability evaluation metrics proposed in this paper, our study integrates technology assessment, cost analysis and environmental evaluation to support decision-making for selection of sustainable manufacturing processes. Case studies about sol-gel coating and powder coating are explored in the paper to test the proposed sustainability evaluation methods and metrics. The assessment results provide quantitative justifications used in technology transfer of the new sol-gel coating innovations. The results also help potential technology adopters to reduce their implementation risks of the sol-gel coating process in automotive decorative applications.
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Fang, Jin, Laurent Pilon, Christian Reitz, Torsten Brezesinski, E. Joseph Nemanick, and Sarah H. Tolbert. "Thermal Conductivity of Amorphous and Crystalline Mesoporous Titania Thin Films From 30 to 320 K." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44047.

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This paper reports, for the first time, the cross-plane thermal conductivity of amorphous and crystalline templated cubic mesoporous titania thin films from 30 to 320 K. Both sol-gel and nanocrystal-based films were synthesized by evaporation-induced self-assembly with porosity of 30% to 35%, respectively. The pore diameter in sol-gel mesoporous films ranged from 14 to 25 nm and film thickness from 120 to 370 nm. Crystalline domains in crystalline mesoporous films were 9 to 13 nm in diameter. The thermal conductivity was measured between 30 and 320 K using the 3ω method. The experimental setup and the associated analysis were first validated by comparing experimental measurements with data reported in the literature for high purity silicon substrate and thermal oxide films over the temperature range considered. The thermal conductivity of sol-gel dense and mesoporous TiO2 films was found to increase with increasing temperature. The thermal conductivity of polycrystalline dense film was strongly dependent on temperature while that of dense amorphous and mesoporous films increased slowly with increasing temperature. The amorphous mesoporous TiO2 films featured very small thermal conductivity due to the fact that heat was mainly transferred by very localized non-propagating vibrational modes. Despite the particles crystallinity, the nanocrystal-based film showed significantly lower thermal conductivity than that of the sol-gel polycrystalline mesoporous thin films due to the strong phonon scattering at the nanocrystal boundaries.
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Reports on the topic "Metoda sol-gel"

1

Torres, Joseph A. Optical and structural investigation of GSO gels made via sol gel method. Office of Scientific and Technical Information (OSTI), August 2013. http://dx.doi.org/10.2172/1091316.

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