Search results for: Alicja Rafalska‐Łasocha

Items from 1 to 20 out of 20 results

article

About Marie Skłodowska-Curie on the occasion of her 150th anniversary of the birth

Alicja Rafalska-Łasocha

Studia Historiae Scientiarum > 2018 > 17

Artykuł poświęcony jest obchodom 150. rocznicy urodzin dwukrotnej laureatki Nagrody Nobla, odkrywczyni polonu i radu, pierwszej kobiecie profesor Sorbony, która w rankingu zorganizowanym przez periodyk New Scientist uznana została za najwybitniejszą i najbardziej inspirującą uczoną wszechczasów.W młodości Marii wiele uniwersytetów (w tym także polskie) było zamkniętych dla kobiet, więc Skłodowska...

article

Crystal structures of 1,8‐bis(dimethylamino)naphthalene (DMAN) and dicarboxylic acids complexes determined from single‐crystal and powder diffraction data

Marcin Oszajca, Wojciech Nitek, Alicja Rafalska‐Łasocha, Wiesław Łasocha

Crystal Research and Technology > 50 > 9-10 > 781 - 790

New complexes of DMAN proton sponge with 3 dicarboxylic acids (dca): glutaric {1}, suberic {2} and dodecanedioic acid {3} were obtained. The structures of the complexes {1,2} were solved on the basis of laboratory powder data, while the structure of {3} was solved using single crystal methods. The additional goal of the study was to test some new approaches to organic crystal structure solution from...

article

Obchody 100. rocznicy śmierci Karola Stanisława Olszewskiego (1846–1915)

Alicja RAFALSKA-ŁASOCHA

Prace Komisji Historii Nauki PAU > 2015 > 14 > 334-344

Artykuł poświęcony jest znakomitemu polskiemu uczonemu prof. Karolowi Olszewskiemu, który urodził się i żył, gdy Polska nie istniała na mapie świata, a nauka polska rozwijana była głównie na uniwersytetach w Krakowie, we Lwowie i kilku innych uczelniach na zachodzie Europy. W 1883 roku Karol Olszewski i Zygmunt Wróblewski po raz pierwszy skroplili tlen, azot i tlenek węgla w stanie statycznym. Olszewski...

article

Obchody 100. rocznicy śmierci Karola Stanisława Olszewskiego (1846–1915)

Alicja Rafalska-Łasocha

Prace Komisji Historii Nauki PAU > 2015 > 14

article

Pieczęcie z Czermna (Grody Czerwieńskie, Polska wschodnia) - rezultaty analiz chemicznych i metalurgicznych

Marcin Wołoszyn, Elżbieta M. Nosek, Janusz Stępiński, Alicja Rafalska-Łasocha, more

Archeologia Polski > 2015 > 60 > 123-152

The paper reports on the results of chemical analysis and metallography examination of four lead seals from Czermno (Cherven towns region). The seals were issued by Rus dukes and have been dated to 12th-13th centuries. Selected specimens were subjected to detailed observations under SEM (Scanning Electron Microscope). Chemical analysis included EDS (Energy Dispersive X-Ray Spectroscopy) and EDXRF...

article

Kontakty Marii Skłodowskiej-Curie ze środowiskiem krakowskim

Alicja RAFALSKA-ŁASOCHA

Prace Komisji Historii Nauki PAU > 2013 > 12 > 33-66

Marie Skłodowska (1867–1934) spent her childhood and youth in Poland. During and after her studies she lived and worked in France. Many circumstances combined, to give her two homelands. Her discoveries for the benefi t of mankind, however, made her a citizen of the whole world. The aim of this paper was to underline relations of Marie Skłodowska -Curie with Poland – especially with the scientific...

article

Marie Skłodowska-Curie as a role model for scientists

Alicja Rafalska-Łasocha

Catalysis Today > 2012 > 191 > 1 > 1-5

► Personality traits of Marie Skłodowska-Curie were studied on the basis of her Autobiography. ► The main features of character of a double Nobel Laureate are shown and described. ► Maria Skłodowska-Curie was proposed as a role model for young generation.

article

Rentgenowska dyfraktometria proszkowa w badaniach zabytkowych obiektów. Nowe możliwości badawcze na Wydziale Chemii UJ

Alicja Rafalska-Łasocha, Marta Grzesiak, Marcin Oszajca, Wiesław Łasocha

Opuscula Musealia. Czasopismo muzeologiczne > 2011 > 19 > 25-36

Powder diffraction techniques in studies of historical objects can be applied to the investigations of such substances as pigments, corrosion products of metals and other crystalline artistic materials. Unlike techniques such as X-ray fluorescence (XRF) and other methods of chemical analysis that provide information on elemental composition, XRPD enables the identification and differentiation of materials...

article

Rentgenowska dyfraktometria proszkowa w badaniach zabytkowych obiektów. Nowe możliwości badawcze na Wydziale Chemii UJ

Marta Grzesiak, Marcin Oszajca, Alicja Rafalska-Łasocha, Wiesław Łasocha

Opuscula Musealia > 2011 > 19 > 25-36

article

The influence of mixed anionic composition of Mg–Al hydrotalcites on the thermal decomposition mechanism based on in situ study

Agnieszka Węgrzyn, Alicja Rafalska-Łasocha, Dorota Majda, Roman Dziembaj, more

Journal of Thermal Analysis and Calorimetry > 2010 > 99 > 2 > 443-457

A series of Mg/Al hydrotalcites with tailored content of carbonate and nitrate anions was prepared using precipitation method. A part of the obtained materials was additionally crystallized in hydrothermal conditions. Different hydrotalcite phases or domains may co-exist within one sample obtained at controlled conditions. Decomposition mechanism studied in situ (DRIFT, XRD) was different for the...

article

Catalytic reduction of N2O by ethylbenzene over novel hydrotalcite-derived Mg–Cr–Fe–O as an alternative route for simultaneous N2O abatement and styrene production

Piotr Kuśtrowski, Lucjan Chmielarz, Alicja Rafalska-Łasocha, Barbara Dudek, more

Catalysis Communications > 2006 > 7 > 12 > 1047-1052

New hydrotalcite-like materials containing magnesium, chromium, and/or iron were synthesized by the coprecipitation method and then thermally transformed into mixed metal oxides. The obtained catalysts were characterized with respect to chemical composition (XRF), structural (XRD, Mössbauer spectroscopy) and textural (BET) properties. The catalytic performance of the hydrotalcite-derived oxides was...

article

Nanostructured V-containing hydrotalcite-like materials obtained by non-stoichiometric anion exchange as precursors of catalysts for oxidative dehydrogenation of n-butane

Agnieszka Węgrzyn, Alicja Rafalska-Łasocha, Barbara Dudek, Roman Dziembaj

Catalysis Today > 2006 > 116 > 1 > 74-81

Hydrotalcite precursors, and subsequently mixed oxide catalysts, with different loadings of vanadium were studied. A modified method of preparation at fixed pH but various amounts of the decavanadate anions below the stoichiometric value, was applied. Different vanadate species as well as carbonates were identified according to XRD patterns and FTIR spectra. The increasing content of vanadium resulted...

article

Selective oxidation of ammonia to nitrogen on transition metal containing mixed metal oxides

Lucjan Chmielarz, Piotr Kuśtrowski, Alicja Rafalska-Łasocha, Roman Dziembaj

Applied Catalysis B: Environmental > 2005 > 58 > 3-4 > 235-244

The selective catalytic oxidation of ammonia to nitrogen (NH ₃ -SCO) has been studied over hydrotalcite derived mixed metal oxides containing Cu, Co, Fe or Ni. XRD, BET, NH ₃ -TPD and TPR techniques were used for catalysts characterization. Results of NH ₃ -SCO were compared with those of selective catalytic reduction of NO with NH ₃ (NO-SCR). Reaction mechanism was...

article

Influence of thermal treatment conditions on the activity of hydrotalcite-derived Mg–Al oxides in the aldol condensation of acetone

Piotr Kuśtrowski, Dominika Sułkowska, Lucjan Chmielarz, Alicja Rafalska-Łasocha, more

Microporous and Mesoporous Materials > 2005 > 78 > 1 > 11-22

Magnesium–aluminum hydrotalcite-like compounds (with molar ratios of Mg/Al ranging from 2.1 to 3.6) containing both carbonate and nitrate anions in the interlayer space were synthesized by the co-precipitation method. The obtained materials were characterized with respect to structure (XRD and FTIR) and chemical composition (elemental analysis and XRF). The stability of interlayer anions was studied...

article

Substitution of Fe³⁺ for Al³⁺ Cations in Layered Double Hydroxide [LiAl₂(OH)₆]₂CO₃-nH₂O

Piotr Kuśtrowski, Agnieszka Węgrzyn, Alicja Rafalska-Łasocha, Agnieszka Pattek-Janczyk, more

Clays and Clay Minerals > 2005 > 53 > 1 > 18-27

Synthesis of the Li-Al-Fe layered double hydroxides was performed by the coprecipitation method at constant pH (11.0±0.2) and temperature (40±2°C). Structural features of the as-synthesized samples were investigated by X-ray diffraction (XRD), infrared (IR) spectroscopy, scanning electron microscopy and Mössbauer spectroscopy. The samples consisted of well crystallized [LiFe_xAl_2-x(OH)₆]₂CO₃·nH₂O phases...

article

Effect of rehydration conditions on the catalytic activity of hydrotalcite-derived Mg-Al oxides in aldolization of acetone

Piotr Kuśtrowski, Dominika Sułkowska, Lucjan Chmielarz, Piotr Olszewski, more

Reaction Kinetics, Mechanisms and Catalysis > 2005 > 85 > 2 > 383-390

SummaryMg-Al hydrotalcite-derived oxides with a varying Mg/Al molar ratio, ranging from 2.6 to 3.2, were rehydrated in the vapor phase at different temperatures (20-90°C). The catalytic performance of the materials obtained was studied in the aldol condensation of acetone. The initial activity of the rehydrated catalysts depended strongly on the Mg/Al molar ratio and the activation temperature. It...

article

SCR of NO by NH ₃ on alumina or titania-pillared montmorillonite various modified with Cu or Co - Part I. General characterization and catalysts screening

Lucjan Chmielarz, Piotr Kuśtrowski, Małgorzata Zbroja, Alicja Rafalska-Łasocha, more

Applied Catalysis B: Environmental > 2003 > 45 > 2 > 103-116

Al ₂ O ₃ - and TiO ₂ -pillared montmorillonites modified with Cu or Co were studied as catalysts of NO reduction with ammonia. Transition metals were introduced to pillared clays (PILCs) by ion exchange method or simultaneously with pillaring agent to the parent montmorillonite. The obtained materials were characterized using: XRF (composition), XRD (structure), BET and Horvath...

article

Catalytic activity of Co-Mg-Al, Cu-Mg-Al and Cu-Co-Mg-Al mixed oxides derived from hydrotalcites in SCR of NO with ammonia

Lucjan Chmielarz, Piotr Kuśtrowski, Alicja Rafalska-Łasocha, Dorota Majda, more

Applied Catalysis B: Environmental > 2002 > 35 > 3 > 195-210

M-Mg-Al hydrotalcites (where M=Cu ²⁺ , Co ²⁺ and Cu ²⁺ +Co ²⁺ ) with M ranging from 5 to 20% (as atomic ratio) were prepared by co-precipitation method. Obtained samples were characterised by XRD and TGA techniques. The influence of transition metal content on thermal decomposition of hydrotalcites was observed. Calcination of the hydrotalcites at 600°C resulted in...

article

Influence of Cu, Co and Ni cations incorporated in brucite-type layers on thermal behaviour of hydrotalcites and reducibility of the derived mixed oxide systems

Lucjan Chmielarz, Piotr Kuśtrowski, Alicja Rafalska-Łasocha, Roman Dziembaj

Thermochimica Acta > 2002 > 395 > 1-2 > 225-236

Thermal decomposition of M Mg Al CO ₃ NO ₃ hydrotalcites (where M is Cu ² ⁺ , Co ² ⁺ or Ni ² ⁺ ) with intended M/Mg (0.10/0.61) and M/Al (0.10/0.29) ratios prepared under the same conditions was studied using high temperature X-ray diffraction (HT-XRD) and thermogravimetry coupling with mass spectrometry (TGA-DTA-MS). Introduction of transition...

article

Preparation and characterization of new Mg–Al–Fe oxide catalyst precursors for dehydrogenation of ethylbenzene in the presence of carbon dioxide

Piotr Kuśtrowski, Alicja Rafalska-Łasocha, Dorota Majda, Dominika Tomaszewska, more

Solid State Ionics > 2001 > 141-142 > Complete > 237-242

New catalysts based on hydrotalcite-like precursors (Mg–Fe and Mg–Al–Fe) were synthesized. The structure of catalyst precursors was confirmed by XRD, FT–IR and TG. Appearance of separate brucite phase was observed for Mg–Fe precursors with excess of Mg, while for Mg–Al–Fe precursors, increase in Al content led to a formation of MgAl ₂ (OH) ₈ and mixed Al–Fe hydroxides apart from hydrotalcite...

Filter options

Publication date

Set your own date range

INFONA - science communication portal

Search results for: Alicja Rafalska‐Łasocha

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication language

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options