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3.772 Aktuelle Fachpublikationen zum Thema temperature

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Etching of glass microchips with supercritical water

28.10.2014 | P. Karásek; Jakub Grym; M. Roth; Josef Planeta; Frantisek Foret, Lab on a Chip, 2014

A novel method of etching channels in glass microchips with the most tunable solvent, water, was tested as an alternative to common hydrogen fluoride-containing etchants. The etching properties of water strongly depend on temperature and pressure, especially in the vicinity of the water critical ...

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Hydrogen storage in Platinum decorated Hydrogen Exfoliated Graphene sheets by spillover mechanism

28.10.2014 | Sundara Ramaprabhu; Puthusseri Divya, Physical Chemistry Chemical Physics, 2014

Development of lightweight materials with high hydrogen storage capacity at ambient temperature is a great challenge in the hydrogen economy. Here, we report high-pressure hydrogen adsorption-desorption studies of platinum nanoparticles decorated hydrogen exfoliated graphene (Pt-HEG). Pt-HEG ...

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Hydrogen-bond relaxation dynamics: Resolving mysteries of water ice

26.10.2014 | Author(s): Yongli Huang , Xi Zhang , Zengsheng Ma , Yichun Zhou , Weitao Zheng , Ji Zhou , Chang Q. Sun, Coordination Chemistry Reviews, 2014

Publication date: Available online 23 October 2014 Source:Coordination Chemistry Reviews Author(s): Yongli Huang , Xi Zhang , Zengsheng Ma , Yichun Zhou , Weitao Zheng , Ji Zhou , Chang Q. Sun We present recent progress in understanding the anomalous behavior of water ice under ...

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Impact of Gas–Condensate Composition and Interfacial Tension on Oil-Repellency Strength of Wettability Modifiers

24.10.2014 | J. Fahimpour; M. Jamiolahmady, Energy & Fuels, 2014

Productivity of gas–condensate wells can significantly be declined as the condensate bank evolves around the wellbore. Wettability alteration of formation minerals from strongly liquid-wet to intermediate gas-wet conditions using liquid-repellent fluorinated chemicals has shown promising results ...

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Measurement and Modeling of the Densities for CO2 + Dodecane System from 313.55 K to 353.55 K and Pressures up to 18 MPa

24.10.2014 | Yi Zhang; Zhaoyan Liu; Weiguo Liu; Jiafei Zhao; Mingjun Yang; Yu Liu; Dayong Wang; Yongchen Song, Journal of Chemical & Engineering Data, 2014

Densities of binary mixtures of CO2 and dodecane were measured by a magnetic suspension balance (MSB) at temperatures ranging from 313.55 K to 353.55 K under pressures from (8 to 18) MPa at five different CO2 mole fractions: x1 = 0, 0.2497, 0.5094, 0.7576, and 0.8610. Densities of the binary ...

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ChemInform Abstract: High Pressure‐High Temperature Synthesis of Lithium‐Rich Li3O(Cl, Br) and Li3‐xCax/2OCl anti‐Perovskite Halides.

23.10.2014 | Jianzhong Zhang, Jiantao Han, Jinlong Zhu, Zhijun Lin, Maria H. Braga, Luke L. Daemen, Liping Wang, Yusheng Zhao, ChemInform, 2014

Abstract The system (Li,Ca)—O—(Cl,Br) is investigated by synchrotron XRD under high pressure and temperature for the synthesis of lithium‐rich anti‐perovskite halides.

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Design of Finned Pipe Network to Improve Efficiency of Butter Melter

23.10.2014 | A.S. Warrier, I.K. Sawhney, P.S. Minz, Journal of Food Process Engineering, 2014

Abstract This study was undertaken to improve the efficiency of industrial butter melter. Butter is generally kept in cold storage at −18 to −20C in 20–25 kg blocks. Butter blocks are melted in a vat/kettle before being further processed or mixed with other food ingredients. The equipment ...

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Continuous Control of Optical Gaps in Quasi-One-Dimensional Bromide-Bridged Platinum Complexes by Utilizing Chemical Pressure

23.10.2014 | Shohei Kumagai; Hiroaki Iguchi; Shinya Takaishi; Brian K. Breedlove; Masahiro Yamashita; Hiroyuki Matsuzaki; Hiroshi ..., Inorganic Chemistry, 2014

The optical gap in a series of bromo-bridged platinum chain complexes, [Pt(en)2Br](Cn–Y)2·H2O (en = ethylenediamine; Cn–Y = dialkyl sulfosuccinate; n = the number of carbon atoms), was controlled by using chemical pressure. From the single-crystal structure, [Pt(en)2Br](C6–Y)2·H2O is in a ...

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Novel Microelectrode-Based Online System for Monitoring N2O Gas Emissions during Wastewater Treatment

23.10.2014 | Ricardo Marques; Adrian Oehmen; Maite Pijuan, Environmental Science & Technology, 2014

Clark-type nitrous oxide (N2O) microelectrodes are commonly used for measuring dissolved N2O levels, but have not previously been tested for gas-phase applications, where the N2O emitted from wastewater systems can be directly quantified. In this study, N2O microelectrodes were tested and ...

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Experimental Measurement and Thermodynamic Modeling of Hydrate Dissociation Conditions for the Argon + TBAB + Water System

23.10.2014 | Saeedeh Babaee; Hamed Hashemi; Amir H. Mohammadi; Paramespri Naidoo; Deresh Ramjugernath, Journal of Chemical & Engineering Data, 2014

Gas hydrate (clathrate hydrate) dissociation data at low to moderate pressures are necessary for practical applications, e.g., for gas separation. However, it is often known or recognized that the separation conditions encountered exist at high pressures and low temperatures. One solution to this ...

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