Zobrazeno 1 - 10
of 91
pro vyhledávání: '"M. Najbar"'
Autor:
Aleksandra Wesełucha-Birczyńska, M. Najbar, Pawel Kornelak, J. Camra, Tadeusz Wilkosz, Elżbieta Bielańska, Jarosław Dutkiewicz
Publikováno v:
Advanced Materials Research. 651:317-320
Pieces of 1H18N9T acid-proof steel foil were subjected to thermoprogrammed oxidation up to 823K, 873K, 1023K and 1113K in air flow. The phases in the oxide layers were determined by Raman spectroscopy. The chemical compositions of the surface microla
Autor:
Jarosław Dutkiewicz, M. Najbar, Elżbieta Bielańska, Alicja Rafalska-Łasocha, Mateusz Kozicki, Lidia Lityńska-Dobrzyńska, Aleksandra Wesełucha-Birczyńska, Wiesław Łasocha
Publikováno v:
Optics and Photonics Journal. :7-12
In this paper, the results of the investigation of the morphology and phase composition of the oxide layers formed on the surface of the 1H18N9T acid proof steel foil by confocal Raman micro-spectroscopy with optical microscopy, SEM, XRD and TEM-EDS-
Autor:
Andrzej Krztoń, Patrick Da Costa, M. Najbar, J. Camra, Gérald Djéga-Mariadassou, Małgorzata Adamowska
Publikováno v:
Applied Catalysis B: Environmental. 90:535-544
The catalytic activities of ceria–zirconia mixed oxides CexZr1−xO2 (x = 0.17, 0.62 and 0.8) rhodium catalysts were determined by isothermal steady-state experiments using a representative mixture of exhaust gases of coal combustion. Results show
Autor:
Dang Sheng Su, Cyril Thomas, Pawel Kornelak, Makoto Toba, Aleksandra Wesełucha-Birczyńska, J. Camra, M. Najbar
Publikováno v:
Catalysis Today
The paper concerns the evolution of surface species of a V–O–Mo/anatase catalyst in the course of its thermal treatment in oxidising and/or reducing conditions. The catalyst was obtained by the sol–gel method. The structure of its surface was i
Publikováno v:
Catalysis Today. 119:199-203
NO decomposition at 673 K as a function of contact times over a V-O-W/Ti(Sn)O 2 catalyst obtained by sol–gel method and pretreated at 673 K in helium stream was investigated and compared with that over a Cu-ZSM-5 catalyst. Feed containing 4% NO in
Publikováno v:
Chemical Physics Letters. 417:137-142
The aim of the Letter is to elucidate the nature of metal-support interaction in the 2 wt% Rh/Al 2 O 3 catalyst obtained by annealing Rh–O–Al xerogel at 1113 K in air. XPS, HRTEM, and XRD results reveal that during the Rh–O–Al xerogel anneali
Autor:
Anna Białas, Andrzej Bernasik, J. Camra, Kazimierz Kowalski, Elżbieta Bielańska, M. Zimowska, M. Najbar
Publikováno v:
Catalysis Today. 105:629-633
The aim of this study is to gain information necessary to propose the mechanism of the oxide layers’ formation on the FeCr alloy foil of 0.05 mm thickness as well as to obtain indications about thermal treatment resulting in the relatively uniform
Autor:
Anna Białas, L Proniewicz, Gérald Djéga-Mariadassou, Pawel Kornelak, Fujio Mizukami, Aleksandra Wesełucha-Birczyńska, M. Najbar
Publikováno v:
Catalysis Today. 90:103-107
A nanostructured anatase supported V–O–Mo catalyst with V:Mo:Ti = 1:9:90, obtained by sol–gel method from inorganic substrates, was investigated. The structure of the species formed on the catalyst surface in the course of synthesis was determi
Autor:
J. Banaś, Anna Białas, Elżbieta Bielańska, Dang Sheng Su, Fujio Mizukami, M. Najbar, Pawel Kornelak, Aleksandra Wesełucha-Birczyńska, B. Borzęcka-Prokop
Publikováno v:
Catalysis Today. 90:93-102
The aim of this paper is to investigate the processes occurring during V-O-W unsupported catalyst formation in order to gain the knowledge necessary to design supported catalysts. Sol-gel synthesis of V-W hydroxo-oxide hydrate (W:V = 9:1) from tungst
Publikováno v:
Chemical Physics Letters. 371:253-259
Density functional calculations were performed for V 10 O 31 H 12 and V 9 WO 31 H 12 cluster models. The effects of external potential perturbation and cluster reduction on their electronic properties were analyzed. The influence of such perturbation