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Trjszkiewicz E.,Wydzial Chemiczny Politechniki Warszawskiej | Rarog-Pilecka W.,Wydzial Chemiczny Politechniki Warszawskiej | Irach M.,Wydzial Chemiczny Politechniki Warszawskiej | Karolewska M.,Wydzial Chemiczny Politechniki Warszawskiej | Narowski R.,Instytut Nawozow Sztucznych
Przemysl Chemiczny | Year: 2012

Six NIMo catalysts supported on various C substrates were prepd. by the impregnation method. The cataiytic activity of the resulting systems was tested in hydrodesulfurization of thiophene at 260-400°C and 1 atm. Active C supports were characterized by N2sorption, Hg porosimetry and temp.-programmed desorption. Activity of the catalysts depended strongly on the properties of the C support. Some of the bimetallic NiMojC catalysts were more efficient than the com. one. Source


Zukowski K.,Wydzial Chemiczny Politechniki Warszawskiej | Chudy M.,Wydzial Chemiczny Politechniki Warszawskiej | Dybko A.,Wydzial Chemiczny Politechniki Warszawskiej | Brzozka Z.,Wydzial Chemiczny Politechniki Warszawskiej
Przeglad Elektrotechniczny | Year: 2010

This paper presents a highly efficient passive micromixer with a three-dimensional topography of microchannel that employs diffusion for mixing. The microchannels were created in PMMA plates by mechanical milling with a high frequency spindle. The PMMA plates with microchannels were thermally bonded to form sealed 3D micromixer structure. The developed device is easy to fabricate and has excellent working characteristics in the continuous-flow mode. In this paper we describe a simple method of microchannels' adjustment. Source

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