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2.492 Aktuelle Fachpublikationen zum Thema temperature

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Energy efficient microwave synthesis of mesoporous Ce0.5M0.5O2 (Ti, Zr, Hf) nanoparticles for low temperature CO Oxidation in an ionic liquid – a comperative study

25.11.2014 | Anja-Verena Mudring; Tarek Alammar; Kit Chow, New Journal of Chemistry, 2014

Ce0.5M0.5O2 (M=Ti,Zr, Hf) nanoparticles have been successfully synthesized by microwave irradiation in the ionic liquid [C4mim][Tf2N] (1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide). The morphology, crystallinity, and chemical composition of the obtained materials were ...

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Chemical‐vapor‐sensitive materials based on a multiwalled carbon nanotube/hydroxyl propyl methylcellulose/cellulose composite

22.11.2014 | Kaihua Liu, Beihai He, Liying Qian, Junrong Li, Journal of Applied Polymer Science, 2014

ABSTRACT A type of chemical vapor‐sensing material made from multiwalled carbon nanotubes/hydroxyl propyl methyl cellulose/cellulose composite films were prepared in the room‐temperature ionic liquid 1‐butyl‐3‐methylimidazolium chloride ([BMIm]Cl). A typical negative vapor coefficient was ...

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The Effect of Pore Morphology on Hot Spot Temperature

21.11.2014 | George Arthur Levesque, Peter Vitello, Propellants, Explosives, Pyrotechnics, 2014

Abstract Composite explosives contain pores that collapse under shock wave interaction generating localized regions of heat known to be important in the initiation of high explosives. Understanding pore collapse under shock loading is essential to create predictive reactive flow models to ...

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Investigation of Crystal Morphology and Shock Sensitivity of Cyclotrimethylenetrinitramine Suspension by Rheology

21.11.2014 | Robert J. Hudson, Mohammed Moniruzzaman, Philip P. Gill, Propellants, Explosives, Pyrotechnics, 2014

Abstract Crystal morphology and shock sensitivity of a series of cyclotrimethylenetrinitramine (RDX) particles suspended from ethylene glycol were investigated. Flow rheology was employed to measure the rheological properties of the suspensions at constant temperature; it was observed that the ...

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Synthesis and characterization of a nano‐hydroxyapatite/chitosan/polyethylene glycol nanocomposite for bone tissue engineering

19.11.2014 | Mohammad Shakir, Reshma Jolly, Mohd Shoeb Khan, Noor‐e Iram, Tarun Kumar Sharma, Saud Ibrahim Al‐Resayes, Polymers for Advanced Technologies, 2014

A novel nanocomposite involving nano‐hydroxyapatite/chitosan/polyethylene glycol (n‐HAP/CS/PEG) has been successfully synthesized via co‐precipitation approach at room temperature. The purpose to synthesize such nanocomposite is to search for an ideal analogue which may mimick the composition of ...

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Heterogeneous Carbon Gels: N-Doped Carbon Xerogels from Resorcinol and N-Containing Heterocyclic Aldehydes

19.11.2014 | Wojciech Kiciński; Małgorzata Norek; Bartłomiej J. Jankiewicz, Langmuir, 2014

Direct, acid (HCl) initiated sol–gel polycondensation of resorcinol with pyrrole-2-carboxaldehyde or its derivative N-methyl-2-pyrrolecarboxaldehyde yields thermosetting phenolic organic gels with N-content of up to 8.4 wt %. After carbonization, sturdy monoliths of N-doped carbon xerogels with ...

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pH- and Temperature-Responsive Aqueous Foams Stabilized by Hairy Latex Particles

18.11.2014 | Syuji Fujii; Ko Akiyama; Saori Nakayama; Sho Hamasaki; Shinichi Yusa; Yoshinobu Nakamura, Soft Matter, 2014

Polystyrene (PS) particles carrying pH- and temperature-responsive poly[2-(dimethylamino)ethyl methacrylate] (PDMA) hairs (PDMA-PS particles) were synthesized by dispersion polymerization. The diameter, diameter distribution, morphology, chemical composition and surface chemistry of the particles ...

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Mechanical Behavior of Nanostructured and Microstructured Explosives

17.11.2014 | Vincent Pichot, Benedikt Risse, Julien Mory, Christelle Nicollet, Fabien Schnell, Marc Comet, Denis Spitzer, Propellants, Explosives, Pyrotechnics, 2014

Abstract Nanostructured hexolites (40/60), (60/40), (80/20) and microstructured hexolite (60/40) powders are pressed by uniaxial compression to obtain explosive charges. This kind of composition is often used for the synthesis of detonation nanodiamonds. The morphology, density and cohesion of ...

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Effect of dielectric packing materials on the decomposition of carbon dioxide using DBD microplasma reactor

14.11.2014 | Xiaofei Duan, Zongyuan Hu, Yanping Li, Baowei Wang, AIChE Journal, 2014

Abstract Carbon dioxide (CO2) decomposition was carried out at a normal atmosphere and room temperature in dielectric barrier discharge (DBD) microplasma reactors to reduce CO2 emissions and convert CO2 into valuable chemical materials. The outlet gases, including CO2, CO, and O2, were ...

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Generalized Approach to the Microstructure Direction in Metal Oxide Ceramics via Polymerization-Induced Phase Separation

14.11.2014 | Stephen G. Rudisill; Sammy Shaker; Denis Terzic; Réginald Le Maire; Bao-Lian Su; Andreas Stein, Inorganic Chemistry, 2014

When three-dimensionally ordered macroporous (3DOM) materials are synthesized in polymeric colloidal crystal templates using a Pechini-type approach, polymerization-induced phase separation (PIPS) can occur. Depending on the reaction conditions, the porous products have a variety of morphologies, ...

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