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Spectroscopic studies of alumina supported nickel catalysts precursors: Part II - catalysts prepared from alkaline solutions

100%
Pasieczna-Patkowska S., Ryczkowski J.
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2010
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vol. 65
121-131
EN
Nickel alumina supported catalysts were prepared from alkaline solutions of hexaamminenickel nitrate by CIM and DIM methods (classical and double impregnation, respectively). The catalysts exhibited different nickel species due to the existence of various metal-support interaction strengths. As a consequence, the reducibility and other surface properties changed as a function of the preparation method. The aim of this work was to study the interaction between the metal precursor and alumina surface by means of FT-IR (Fourier transform infrared) and FT-IR/PAS (FT-IR photoacoustic spectroscopy).
2
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FT-IR/PAS Studies of Lunar Regolith Samples

81%
Pasieczna-Patkowska S., Dąbrowski A., Robens E., Ryczkowski J.
Acta Physica Polonica A
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2008
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vol. 114
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issue 6A
A-163-A-168
EN
This paper describes investigations of the surface properties of lunar regolith powder samples from the Apollo 11, 12, and 16 missions, respectively. For this part of studies conducted at the Faculty of Chemistry, Maria Curie-Skłodowska University a Fourier transform infrared photoacoustic spectroscopy was applied.
3
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The influence of gold on the properties of silica mesoporous materials

81%
Gac W., Pasieczna-Patkowska S., Kępiński L.
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2010
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vol. 65
100-120
EN
The properties of gold modified silica mesoporous materials were investigated on the successive preparation stages. Samples were obtained by the direct introduction of HAuCl4 aqueous solution to the synthesis mixture of silica. It was stated that partial substitution of -Cl with -OH ligands occurred in the diluted solutions of HAuCl4. The replacement of -Cl with -Br groups in gold complexes took place in the synthesis mixture containing hexadecyltrimethylammonium bromide surfactant molecules. It was found that gold species influenced the removal of organic templates from the channels of silica materials. Pore arrangement was not strongly distorted by the presence of small amounts of gold. Heat treatment led to the pronounced changes of the nature of gold species.
4
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FT-IR/PAS Studies of Cu(II)-EDTA Complexes Sorption οn the Chelating Ion Exchangers

81%
Kołodyńska D., Hubicki Z., Pasieczna-Patkowska S.
Acta Physica Polonica A
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2009
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vol. 116
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issue 3
340-343
EN
The possibility of removal of copper(II) complexes with ethylenediaminetetraacetic acid (EDTA) from waters and wastewaters by the chelating ion exchangers Lewatit TP 214, Lewatit TP 260 and Diaion CR-20 as well as the mechanism of their sorption onto them were investigated. In order to describe the sorption process of Cu(II) ions in the presence of EDTA, the FT-IR/PA spectra of the abovementioned chelating ion exchangers were recorded.
5
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Investigation of surface properties of lunar regolith - Part IV

37%
Robens E., Dąbrowski A., Mendyk E., Goworek J., Skrzypiec K., Drewniak M., Dumańska-Słowik M., Gac W., Dobrowolski R., Pasieczna-Patkowska S., Huber M., Iwan M., Kurzydłowski K., Płociński T., Ryczkowski J., Rzączyńska Z., Sobczak J.
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2008
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vol. 63
144-168
EN
We investigated three lunar regolith powder samples from the Apollo missions. Apollo 11 and Apollo 12 samples come from lunar maria and Apollo 16 sample from a highland region. In the present paper we summarise in brief results of measurements using photoelectron spectroscopy (XPS), micro-Raman spectroscopy (RM), x-ray diffraction (XRD), x-ray fluorescence spectroscopy (XRF), temperature programmed reduction and oxidation (TPRO), thermogravimetry (TG), differential thermal analysis (DTA) and nitrogen adsorption. Parts of samples are visualised by means of scanning electron microscopy (SEM/EDX) and atomic force microscopy (AFM).
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