Search results

1

Utilization of spent iron catalyst for ammonia synthesis

100%

Arabczyk W., Narkiewicz U., Lendzion-Bieluń Z., Moszyński D., Pełech I., Ekiert E., Podsiadły M., Pelka R., Jędrzejewski R., Moszyńska I., Sibera D.

Polish Journal of Chemical Technology

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2007

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vol. 9

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issue 3

108-113

EN

Several methods of the utilization of spent iron catalyst for ammonia synthesis have been presented. The formation of iron nitrides of different stoichiometry by direct nitriding in ammonia in the range of temperatures between 350°C and 450°C has been shown. The preparation methods of carbon nanotubes and nanofibers where iron catalyst catalyse the decomposition of hydrocarbons have been described. The formation of magnetite embedded in a carbon material by direct oxidation of carburized iron catalyst has been also presented.

2

Multistep Heat-Treatment Effects on Electrospun Nd-Fe-B-O Nanofibers

88%

Jeon E. J., Eom N. S. A., Lee J., Lee B., Cho H. M., On J. S., Choa Y.-H., Kim B. S.

Archives of Metallurgy and Materials

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2018

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vol. 63

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issue 3

3

Manufacturing process and characterization of electrospun PVP/ZnO NPs nanofibers

75%

Matysiak W., Tański T., Zaborowska M.

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2019

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issue 2

4

Comparative Studies of Electrospinning and Solution Blow Spinning Processes for the Production of Nanofibrous Poly(L-Lactic Acid) Materials for Biomedical Engineering

75%

Wojasiński M., Pilarek M., Ciach T.

Polish Journal of Chemical Technology

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2014

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vol. 16

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issue 2

43-50

EN

Comparative statistical analysis of the infiuence of processing parameters, for electrospinning (ES) and solution blow spinning (SBS) processes, on nanofibrous poly(L-lactic acid) (PLLA) material morphology and average fiber diameter was conducted in order to identify the key processing parameter for tailoring the product properties. Further, a comparative preliminary biocompatibility evaluation was performed. Based on Design of Experiment (DOE) principles, analysis of standard effects of voltage, air pressure, solution feed rate and concentration, on nanofibers average diameter was performed with the Pareto’s charts and the best fitted surface charts. Nanofibers were analyzed by scanning electron microscopy (SEM). The preliminary biocompatibility comparative tests were performed based on SEM microphotographs of CP5 cells cultured on materials derived from ES and SBS. Polymer solution concentration was identified as the key parameter infiuencing morphology and dimensions of nanofibrous mat produced from both techniques. In both cases, when polymer concentration increases the average fiber diameter increase. The preliminary biocompatibility test suggests that nanofibers produced by ES as well as SBS are suitable as the biomedical engineering scaffold material.

5

Characterization of morphology and optical properties of SnO₂ nanowires prepared by electrospinning

75%

Tański T., Smok W., Matysiak W., Tański T., Smok W., Matysiak W.

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2021

6

Thin SnO2 Films Manufactured Via the Sol-Gel and Electrospinning Methods

75%

Matysiak W., Tański T., Smok W., Polishchuk S., Matysiak W., Tański T., Smok W., Polishchuk S.