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1.229 Aktuelle Fachpublikationen zum Thema temperature

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Extraction of polymer stress–strain behavior in the presence of self‐heating by the use of a simple model for the elastic–plastic deformation

24.07.2015 | Chrystelle A Bernard, Christophe Fond, Saïd Ahzi, Nadia Bahlouli, Polymer Engineering and Science, 2015

Polymer materials are well known to be sensitive to strain rate and temperature. Self‐heating and friction effects also play an important role in the mechanical response of these materials. Numerous constitutive laws and phenomenological models have been developed to take into account these ...

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Kinetics and Reactor Modeling of the Steam Reforming of Methanol over Mn‐promoted Cu/Al Catalyst

21.07.2015 | Huancong Shi, Hussameldin Ibrahim, Mohanned M. Elamin, Raphael Idem, Paitoon Tontiwachwuthikul, Chemical Engineering & Technology, 2015

Abstract The kinetics of the steam reforming of methanol (SRM) was studied in a packed bed reactor over Mn‐promoted Cu/Al2O3 catalyst at atmospheric pressure, temperature range of 170 to 250 oC, and weight time (W/FA0) range of 0.38 to 2.40 g‐cat.h.mol‐1 CH3OH. A LHHW type mechanism that ...

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Impact of electrospinning process parameters on the measured current and fiber diameter

17.07.2015 | Siavash Sarabi‐Mianeji, Jennifer Scott, Danny J.Y.S. Pagé, Polymer Engineering and Science, 2015

In this article, polycaprolactone (PCL) nanofibres were processed by electrospinning using a 3:1 ratio of tetrahydrofuran to methanol as solvent. The solvent choice was motivated by the possibility of greener alternatives to the halogenated compounds most often used for electrospinning. The ...

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Kinetics and thermodynamics of diquat removal from water using magnetic graphene oxide nanocomposite

15.07.2015 | Yongmei Hao, Zhongkai Wang, Jiajia Gou, Zhongming Wang, The Canadian Journal of Chemical Engineering, 2015

Abstract The graphene oxide nanocomposite (GO‐Fe3O4) was synthesized by a simple and low‐cost method. This nanocomposite was characterized by XRD, TEM, FT‐IR, TGA, and VSM. Spherical Fe3O4 nanoparticles with an average size of 10 nm were uniformly applied to the surface of graphene oxide ...

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Hydromagnetic blasius flow of power‐law nanofluids over a convectively heated vertical plate

15.07.2015 | Waqar A. Khan, Richard Culham, Oluwole D. Makinde, The Canadian Journal of Chemical Engineering, 2015

Abstract In this study, the hydromagnetic Blasius flow of power‐law nanofluids is investigated numerically. A convectively heated impermeable vertical plate is used and a constant transverse magnetic field is applied at the plate surface. The characteristics of water‐based non‐Newtonian ...

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Microwave‐assisted Methyl Ester Production from Palm Fatty Acid Distillate over Heterogeneous Carbon‐based Solid Acid Catalyst

15.07.2015 | Ibrahim M. Lokman, Umer Rashid, Yun Hin Taufiq‐Yap, Chemical Engineering & Technology, 2015

Abstract In the present work, an efficient microwave‐pulse width modulation (microwave‐PWM) batch reactor with controlled‐temperature and ‐power was fabricated for biodiesel production process. A study on microwave‐assisted acceleration of esterification rate of palm fatty acid distillate ...

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Comparison of Overall Gas‐Phase Mass Transfer Coefficient for CO2 Absorption between Tertiary Amines in a Randomly Packed Column

15.07.2015 | Le Wen, Helei Liu, Wichitpan Rongwong, Zhiwu Liang, Kaiyun Fu, Raphael Idem, Paitoon Tontiwachwuthikul, Chemical Engineering & Technology, 2015

Abstract The mass transfer performance of CO2 absorption into an innovative tertiary amine solvent, 1‐dimethylamino‐2‐propanol (1DMA2P), was investigated and compared with that of methyldiethanolamine (MDEA) in a packed column with random Dixon‐ring packing. All experiments were conducted ...

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Enhancing treatment and geotechnical stability of oil sands fine tailings using thermo‐sensitive poly (n‐isopropyl acrylamide)

14.07.2015 | Haihong Li, Joe Zhou, Ross Chow, Adebukola Adegoroye, Aref Seyyed Najafi, The Canadian Journal of Chemical Engineering, 2015

Abstract A thermo‐sensitive polymer, poly(n‐isopropyl acrylamide) (PNIPAM), was tested in the dewatering (settling, consolidation, and geotechnical stability of shear strength via vane testing) of oil sands fine tailings. The tested samples included

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Solvent extraction of phenol from aqueous solution with benzyl 2‐ethylhexyl sulfoxide as a novel extractant

03.07.2015 | Shixiong Wang, Deqiang Shi, Ruisi Yang, Yan Xu, Hong Guo, Xiangjun Yang, The Canadian Journal of Chemical Engineering, 2015

In this paper, we synthesized a novel structure of sulfoxide, benzyl 2‐ethylhexyl sulfoxide (BSO), and evaluated its performance for extracting phenol. The influences of several variables on phenol extraction were investigated, including equilibrium time, pH value, temperature, and salts in the ...

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Intrinsic Kinetics of Esterification of Fatty Acids Catalyzed by Supported Ionic Liquid Catalysts

02.07.2015 | Parminder Kaur Khabinder Singh Heer, Deepak D. Chabukswar, Vilas G. Gaikar, Chemical Engineering & Technology, 2015

Abstract Esterification of palm fatty acid distillate with methanol was investigated for intrinsic kinetics and regarding the effect of catalyst loading, temperature, and methanol to feed molar ratio using ionic liquid acidic catalysts covalently attached to a polystyrene support. The kinetic ...

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