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2.305 Aktuelle Fachpublikationen zum Thema temperature

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Influence of lanthanum distribution on dielectric and ferroelectric properties of BaBi4-xLaxTi4O15 ceramics

04.01.2015 | Author(s): Anita Khokhar , Parveen K. Goyal , O.P. Thakur , A.K. Shukla , K. Sreenivas, Materials Chemistry and Physics, 2015

Publication date: 15 February 2015 Source:Materials Chemistry and Physics, Volume 152 Author(s): Anita Khokhar , Parveen K. Goyal , O.P. Thakur , A.K. Shukla , K. Sreenivas Structural and electrical properties of Lanthanum substituted barium bismuth titanate BaBi4-x La x Ti4O15 ...

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Comparison of reduced and sulfided CoMo/γ‐Al2O3 catalyst on hydroprocessing of pretreated bio‐oil in a continuous packed‐bed reactor

29.12.2014 | Divya R. Parapati, Vamshi K. Guda, Venkata K. Penmetsa, Sathish K. Tanneru, Brian Mitchell, Philip H. Steele, Environmental Progress, 2014

Pretreated bio‐oil was hydroprocessed with conventional sulfided CoMo/γ‐Al2O3 catalyst in a continuous packed‐bed reactor. Hydroprocessing experiments were performed at a temperature of 350 to 400°C, 1500 psig hydrogen pressure, using a hydrogen flow rate of 500 mL/min at a liquid hourly space ...

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Growth behavior and structural characteristics of TiO2 thin films using (CpN)Ti(NMe2)2 and oxygen remote plasma

29.12.2014 | Chunho Kang, Heeyoung Jeon, Woochool Jang, Hyoseok Song, Honggi Kim, Hyunjung Kim, Hyeongtag Jeon, physica status solidi (a), 2014

This study examined the effect of a novel precursor on the growth behavior and structure of titanium dioxide (TiO2) thin films. TiO2 thin films were deposited by remote plasma atomic layer deposition (RPALD). Dimethylamin‐cyclopentadienyl titanium, (CpN)Ti(NMe2)2, was used as a Ti precursor and ...

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Sewage Sludge Torrefaction in an Auger Reactor

29.12.2014 | María Atienza-Martínez; José Francisco Mastral; Javier Ábrego; Jesús Ceamanos; Gloria Gea, Energy & Fuels, 2014

A lab-scale auger reactor was used for the study of dry sewage sludge torrefaction. The influence of the torrefaction temperature (between 250 and 300 °C) and the solid residence time (between 13 and 35 min) on the product distribution and properties was investigated. The results have shown that ...

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High‐Temperature Na2SO4 Deposit‐Assisted Corrosion of Silicon Carbide – I: Temperature and Time Dependence

26.12.2014 | Joseph M. Hagan, Elizabeth J. Opila, Journal of the American Ceramic Society, 2014

Time and temperature dependence of Na2SO4‐induced hot corrosion were studied for sintered‐α (Hexoloy) as well as CVD‐SiC at temperatures between 900°C and 1100°C and at times from 0.75 to 96h. The extent of corrosion was quantified using mass change measurements, removal of corrosion products ...

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Induced oxygen vacancies and their effect on the structural and electrical properties of a fluorite-type CaZrO3–Gd2Zr2O7 system

24.12.2014 | Vaisakhan Thampi; Prabhakar Rao Padala; A. N. Radhakrishnan, New Journal of Chemistry, 2014

Solid oxide materials were prepared via a solid state reaction route with a stoichiometry composition: x% of CaZrO3 and (100 − x)% of Gd2Zr2O7 (x = 10, 20, 33.3, 40). Powder X-ray diffraction under ambient and high-temperature conditions, scanning electron microscopy, transmission electron ...

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Smoke and toxicity suppression by zinc salts in flame‐retardant polyurethane‐polyisocyanurate foams filled with phosphonate and chlorinated phosphate

23.12.2014 | Xiu Liu, You Zhou, Jianwei Hao, Jianxin Du, Journal of Applied Polymer Science, 2014

ABSTRACT Three types of zinc salts, ZnAl2O4, ZnFe2O4, and Zn2SiO4, were prepared by coprecipitation. Potential smoke and toxicity suppression by zinc salts in flame‐retardant polyurethane‐polyisocyanurate foams (FPUR‐PIR) with dimethylmethylphosphonate (DMMP) and tris (2‐chloropropyl) ...

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Hydrolysis and Methanolysis of Silanes Catalyzed by Iridium(III) Bis-N-Heterocyclic Carbene Complexes: Influence of the Wingtip Groups

23.12.2014 | Mélanie Aliaga-Lavrijsen; Manuel Iglesias; Andrea Cebollada; Karin Garcés; Nestor Garcı́a; Pablo J. Sanz Miguel; Fra ..., Organometallics, 2014

New [Ir(CH3CN)2(I)2{κC,C′-bis(NHC)}]BF4 complexes featuring bis-NHC ligands with a methylene bridge and different N substitution (−CH2CH2CH2CH3 and −CH2CH2OPh) were synthesized. NMR studies and X-ray diffraction structures evidenced that the wingtip group −CH2CH2OPh presents a hemilabile behavior ...

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Pyrolysis, Combustion, and Steam Gasification of Various Types of Scrap Tires for Energy Recovery

23.12.2014 | Jayaraman Kandasamy; Iskender Gökalp, Energy & Fuels, 2014

The energy recovery from carbonaceous materials is considered a reliable energy source. In this context, pyrolysis, combustion, and gasification characteristics of scrap truck and car tire samples were investigated using a thermogravimetric analyzer coupled with mass spectrometer system. ...

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Thermal Stability of Plasma Generated Oxygenated Functionalities on Carbon Nanotubes

22.12.2014 | Nathan Hordy, Jean‐Luc Meunier, Sylvain Coulombe, Plasma Processes and Polymers, 2014

Colloidal suspensions of functionalized carbon nanotubes (CNT nanofluids) have the potential to be used in a variety of applications, many of which require operation at elevated temperatures. In this study, we examine what effect exposure to an argon/oxygen/ethane RF glow discharge plasma has ...

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