Zobrazeno 1 - 10
of 116
pro vyhledávání: '"J. Pielaszek"'
Publikováno v:
Solid State Phenomena. 130:63-68
Laboratory prepared and commercial Li-Mn spinels were studied. Making use of the dedicated XRD-impedance spectroscopy experimental set-up, direct correlations of the degree of phase transformation (expressed as change of the FWHM of the selected refl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f119b9ae97c4d1de686b339e5fc244b5
https://doi.org/10.4028/www.scientific.net/ssp.130.63
https://doi.org/10.4028/www.scientific.net/ssp.130.63
Autor:
J. Pielaszek, M. Marzantowicz, J.R. Dygas, Monika Kopec, D. Lisovytskiy, Franciszek Krok, Zbigniew Kaszkur
Publikováno v:
Journal of Power Sources. 159:412-419
Phase transition in lithium manganese oxide spinel synthesized by sol–gel technique and in samples prepared from commercially available powders of LiMn2O4 (Alfa-Aesar and Sigma–Aldrich) was investigated. In addition to the standard impedance meas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07e791323f772527553b584a93bcbe0f
https://doi.org/10.1016/j.jpowsour.2006.02.033
https://doi.org/10.1016/j.jpowsour.2006.02.033
Autor:
Alain Celzard, J. Pielaszek, Bogusław Mierzwa, G. Furdin, Jean-François Marêché, S. Puricelli, Ghouti Medjahdi
Publikováno v:
Applied Catalysis A: General. 296:232-237
Molybdenum carbide is a promising catalyst in many reactions. Its formation was investigated by XRD for two different active carbons:commercial one (NC100) and made out of expanded graphite. They were impregnated by MoCl 5 from vapor phase and carbon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4cdb627c5883d7697e25e26e60c6391
https://doi.org/10.1016/j.apcata.2005.08.026
https://doi.org/10.1016/j.apcata.2005.08.026
Publikováno v:
Solid State Ionics. 176:2153-2161
Electrical conductivity and dielectric properties of lithium manganese spinels, Li 1+ d Mn 2− d O 4 , d = 0 and d = 0.005, obtained by sol–gel method, were studied by impedance spectroscopy. Parameters of relaxation function were obtained by fitt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14c3610cbe01af72c89f177a78571796
https://doi.org/10.1016/j.ssi.2005.01.012
https://doi.org/10.1016/j.ssi.2005.01.012
Publikováno v:
Solid State Ionics. 176:2059-2064
For the purpose of simultaneous measurement of electric properties and X-ray diffraction pattern during phase transition, an experimental setup was developed combining impedance analyzer and X-ray diffractometer equipped with position sensitive detec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03404583aa6debec1c8432f9c9ab3c9c
https://doi.org/10.1016/j.ssi.2004.08.043
https://doi.org/10.1016/j.ssi.2004.08.043
Autor:
T. Mounis, Marie-Laure Fontaine, Ch. Laberty-Robert, D. Lisovytskiy, B. Mierzwa, J. Pielaszek
Publikováno v:
Solid State Ionics. 176:1213-1223
The formation of the perovskite and derived perovskite oxides via polymeric route has been studied by both in situ X-ray diffraction and thermogravimetric analyses. The dried gel of La1 − xSrxMnO3 and LaMn1 − yCuyO3 oxides have been synthesized f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c0373ed9252e7ae6d29f3e9923549e5
https://doi.org/10.1016/j.ssi.2005.03.004
https://doi.org/10.1016/j.ssi.2005.03.004
Publikováno v:
Journal of Applied Crystallography. 38:266-273
Model powder diffraction patterns were calculatedviathe Debye formula from atom positions of a range of energy-relaxed closed-shell cubooctahedral clusters. The energy relaxation employed the Sutton–Chen potential scheme with parameters for palladi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c346055c09a34179b0c8a7fb0e347cb1
https://doi.org/10.1107/s0021889804033291
https://doi.org/10.1107/s0021889804033291
Autor:
Dmitry V. Kazachkin, Wojciech Juszczyk, Maciej Skotak, Julie L. d'Itri, Leszek Kȩpiński, J. Pielaszek, Zbigniew Karpiński, Vladimir I. Kovalchuk
Publikováno v:
Journal of Catalysis. 227:11-25
The effect of catalyst pretreatment on the performance of chlorine-free γ -alumina-supported palladium catalysts with metal loadings in the range of 0.3 to 2.77 wt% has been investigated in the hydroconversion of n- hexane (nH) and 2,2-dimethylbutan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8443f92d119bf41ce7f73803e9194a03
https://doi.org/10.1016/j.jcat.2004.06.007
https://doi.org/10.1016/j.jcat.2004.06.007
Autor:
Zbigniew Kaszkur, V. N. Baumer, Franciszek Krok, J. Pielaszek, D. Lisovytskiy, J.R. Dygas, Janina Molenda, Monika Kopec, J. Marzec
Publikováno v:
Materials Science Forum. :311-314
Lithium-manganese spinels obtained by sol-gel method were studied by XRD, impedance spectroscopy, electric conductivity and thermogravimetric analysis (TGA). Heating of low-temperature spinels up to 630° C leads to the formation of spinels with latt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9a455cf1431adb90443754c450b0f73
https://doi.org/10.4028/www.scientific.net/msf.443-444.311
https://doi.org/10.4028/www.scientific.net/msf.443-444.311
Publikováno v:
Journal of Catalysis. 220:299-308
This work provides evidence that reduction of Pd/SiO 2 catalysts in dihydrogen at temperatures as low as 450 and 500 °C may already lead to a considerable interaction between palladium and silica, identified by the formation of palladium silicides (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::687e85c46ae452f60ebad1ca58fd6c24
https://doi.org/10.1016/s0021-9517(03)00246-x
https://doi.org/10.1016/s0021-9517(03)00246-x