Search results for: CO- AND FE-BASED CATALYSTS

• Study of the Kinetics of Ammonia Synthesis and Decomposition on Iron and Cobalt Catalysts

  Publication

  • Z. Lendzion-Bieluń
  • R. Pelka
  • W. Arabczyk
  • Z. Lendzion-Bieluń

  - CATALYSIS LETTERS - Year 2009

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• Kinetics studies of recrystallization process of metallic catalysts for ammonia synthesis

  Publication

  • W. Arabczyk
  • I. Jasińska
  • Z. M. Lendzion-Bieluń

  - Catalysis Today - Year 2011

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• On the distribution of aluminium and magnesium oxides in wustite catalysts for ammonia synthesis

  Publication

  • M. Figurski
  • W. Arabczyk
  • Z. M. Lendzion-Bieluń
  • R. Kaleńczuk
  • S. Lenart

  - APPLIED CATALYSIS A-GENERAL - Year 2003

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• Rheological characteristics of oligomeric semiproducts gained via chemical degradation of polyurethane foam using crude glycerin in the presence of different catalysts

  Publication

  • P. Jutrzenka Trzebiatowska
  • J. Datta

  - POLYMER ENGINEERING AND SCIENCE - Year 2017

  Polyurethane (PU) recycling is a topic of growing interest due to the increasing amount of polyurethane waste. The main purpose of polyurethane chemical recycling is to recover the starting polyol. In this study, a method of polyurethane thermochemical recycling, glycerolysis by means of crude glycerin, is proposed. This work presents a comparative study of commercial catalysts used in order to accelerate the decomposition process,...

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• Impact of plastic deformation on magnetoacoustic properties of Fe-2%Si alloy

  Publication

  • L. Piotrowski
  • B. Augustyniak
  • M. Chmielewski
  • F. J. Landgraf
  • M. J. Sablik

  - NDT & E INTERNATIONAL - Year 2009

  W artykule przedstawiono wyniki komplementarnych badań własności magnetycznych stopu Fe-2%Si po deformacji plastycznej. Badania obejmowały pomiary pętli histerezy magnetycznej B(H), magnetycznego efektu Barkhausena oraz emisjii magnetoakustycznej. Badane próbki poddane były deformacji plastycznej do poziomu sięgajćego 8%. Właściwości pętli histerezy zostały skwantyfikowane z wykorzystaniem pola koercji oraz maksymalnej magnetycznej...

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• The TPR reduction profile of CeO2/10wt.%Fe with BCD - 2 cycles

  Open Research Data

  open access

  • P. Błaszczak
  • B. Bochentyn
  • P. Jasiński

  The dataset includes the TPR reduction profiles of CeO2/10wt.%Fe. The samples of nanoCeO2 impregnated with BCD-assisted precursor solution (betacyclodextrin). The dataset includes two cycles of reduction (samples oxidized in between)

• Stability of cylindrical steel silos composed of corrugated sheets and columns based on FE analyses versus Eurocode 3 approach

  Publication

  • P. Iwicki
  • K. Rejowski
  • J. Tejchman

  - ENGINEERING FAILURE ANALYSIS - Year 2015

  Comprehensive static and dynamic 3D stability finite element analyses of a cylindrical steel silo composed of corrugated sheets and open thin-walled vertical stiffener profiles were carried out by taking the geometric and material non-linearity into account. The silowas subjected to axisymmetric and non-axisymmetric loads imposed by a bulk solid following Eurocode 1. Theoretical and measured initial geometric imperfections were...

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• Potential Skyrmion Host Fe(IO3)3: Connecting Stereoactive Lone-Pair Electron Effects to the Dzyaloshinskii-Moriya Interaction

  Publication

  • E. E. Oyeka
  • M. J. Winiarski
  • A. Błachowski
  • K. M. Taddei
  • A. Scheie
  • T. Tran

  - CHEMISTRY OF MATERIALS - Year 2021

  Magnetic skyrmions, which are topologically distinct magnetic spin textures, are gaining increased attention for their unique physical properties and potential applications in spintronic devices. Here we present a design strategy for skyrmion host candidates based on combinations of magnetic spin, asymmetric building units having stereoactive lone-pair electrons, and polar lattice symmetry. To demonstrate the viability of the proposed...

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• Evidence-Based Practice

  Journals

  ISSN: 1095-4120

• Evidence-based nursing

  Journals

  ISSN: 1367-6539

• Evidence Based Midwifery

  Journals

  ISSN: 1479-4489

• Evidence-based dentistry

  Journals

  ISSN: 1462-0049 , eISSN: 1476-5446

• Evidence-Based Medicine

  Journals

  ISSN: 1356-5524

• Intelligence-Based Medicine

  Journals

  eISSN: 2666-5212

• Tuning of eg electron occupancy of MnCo2O4 spinel for oxygen evolution reaction by partial substitution of Co by Fe at octahedral sites

  Publication

  • K. Lankauf
  • K. Górnicka
  • P. Błaszczak
  • J. Karczewski
  • J. Ryl
  • G. Cempura
  • M. Zając
  • M. Bik
  • M. Sitarz
  • P. Jasiński
  • S. Molin

  - INTERNATIONAL JOURNAL OF HYDROGEN ENERGY - Year 2023

  To study the effect of partial Co substitution by Fe in the B site of MnCo2O4 spinel on its physicochemical and electrochemical properties, a series of MnCo2-xFexO4 powders (x=0.125; 0.250; 0.500; 0.750; 1.000) were synthesized by means of the sol-gel method. The produced powders were characterized by powder X ray diffraction (pXRD), scanning and transmission electron microscopy (SEM & TEM) coupled with energy dispersive spectroscopy...

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• The XRD diffraction patterns of as-prepared (La0.3Sr0.6Ce0.1)0.9Me0.1Ti0.9O3-δ (Me= Co, Fe, Ni) materials

  Open Research Data

  embargo

  • B. Bochentyn
  • K. Kujawska

  The  (La0.3Sr0.6Ce0.1)0.9Me0.1Ti0.9O3-δ (Me= Co, Fe, Ni) materials were synthesized via the Pechini method. First, the reagents in the form of nitrates were weighed and dissolved in DI water. In another beaker, a stoichiometric amount of titanium (IV) butoxide (Ti(OBu)4) was mixed together with reagent-grade ethylene glycol (EG), and citric acid (CA)...

• The XRD diffraction patterns of as-prepared (La0.3Sr0.6Ce0.1)0.9Ni0.05Me0.05Ti0.9O3-δ (Me= Co, Fe, Cu) materials

  Open Research Data

  embargo

  • B. Bochentyn
  • A. Ducka

  The ((La0.3Sr0.6Ce0.1)0.9Ni0.05Me0.05Ti0.9O3-δ (Me= Co, Fe, Cu) materials were synthesized via the Pechini method. First, the reagents in the form of nitrates were weighed and dissolved in DI water. In another beaker, a stoichiometric amount of titanium (IV) butoxide (Ti(OBu)4) was mixed together with reagent-grade ethylene glycol (EG), and citric acid...

• On FE modelling of fully saturated soils

  Publication

  • A. Niemunis
  • M. Cudny

  - Year 2008

  Przedstawiono podstawy modelowania gruntów nasyconych w ramach metody elementów skończonych. Przedstawiono szczegółowo podstawowe równania różniczkowe problemu oraz ich słabą formę potrzebną w dyskretyzacji w metodzie elementów skończonych. Porównano dwie podstawowe metody formułowania elementów skończonych: uproszczoną u-p oraz pełną u-p-w. Omówiono podstawowe różnice i ograniczenia metody uproszczonej. Artykuł w swej rozszerzonej...

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• Fe-promoted CuO/CeO2 catalyst

  Publication

  • Z. Lendzion-Bielun
  • M. Bettahar
  • S. Monteverdi
  • Z. Lendzion-Bieluń

  - CATALYSIS COMMUNICATIONS - Year 2010

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• Chaboche model - development and fe application

  Publication

  • A. Ambroziak

  - Year 2005

  Celem artykułu jest prezentacja rozwoju i numerycznej aplikacji sprężysto-lepkoplastycznego modelu Chabocha. Przedstawione są szczegółowe opisy kilku wariantów modelu wraz z parametrami materiałowymi. Dynamiczna analiza kołowej płyty stalowej, która jest porównywana z wynikami eksperymentalnymi, ilustruje praktyczne zastosowanie opisywanego modelu. Do wprowadzenia modelu Chabocha do komercyjnego programu MSC.Marc użyta jest procedura...

• FE simulations of a soil structure interface.

  Publication

  • C. Słomiński
  • J. Tejchman

  - Year 2003

  Przedstawiono warunki brzegowe do opisu szorstkości ściany konstrukcji w kontakcie z gruntem. Wykonano doświadczenia i symulacje MES na bazie mikropolarnego prawa hipoplastycznego.

• Copper and copper-manganese 1D coordination polymers: Synthesis optimization, crystal structure and preliminary studies as catalysts for Baylis–Hillman reactions

  Publication

  • J. C. D. de Andrade
  • L. A. T. Silva
  • C. G. Lima-Junior
  • J. Chojnacki
  • M. L. A. d. A. Vasconcellos
  • R. da Silva
  • S. Alves Junior
  • F. F. da Silva

  - INORGANICA CHIMICA ACTA - Year 2021

  This work reports the influence of experimental parameters (pH and counter-ion) in the synthesis of the 1D coordination polymer [Cu(IDA)(H2O)2]n (IDA = iminodiacetate), named here Cu-IDA. Copper-manganese bimetallic coordination polymers were also obtained by isomorphic replacement into Cu-IDA structure, with different molar ratio of Cu2+ and Mn2+ ions, denoted here as Cu/Mn-IDA (0.9/0.1; 0.7/0.3 and 0.5/0.5). New coordination...

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• Mechanism of hopping conduction in Be–Fe–Al–Te–O semiconducting glasses and glass–ceramics

  Publication

  • N. A. Wójcik
  • N. S. Tagiara
  • D. Möncke
  • E. Kamitsos
  • S. Ali
  • J. Ryl
  • R. J. Barczyński

  - JOURNAL OF MATERIALS SCIENCE - Year 2022

  Electrical properties of beryllium-alumino-tellurite glasses and glass–ceramics doped with iron ions were studied using impedance spectroscopy. The conductivity was measured over a wide frequency range from 10 mHz to 1 MHz and the temperature range from 213 to 473 K. The D.C. conductivity values showed a correlation with the Fe-ion concentration and ratio of iron ions on different valence states in the samples. On the basis of...

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• Photocatalytic ozonation using doped TiO2 catalysts for the removal of parabens in water

  Publication

  • J. Gomes
  • I. Leal
  • K. Bednarczyk
  • M. Gmurek
  • M. Stelmachowski
  • M. Diak
  • M. Emília
  • R. Costa
  • R. Quinta-Ferreira
  • R. Martins

  - SCIENCE OF THE TOTAL ENVIRONMENT - Year 2017

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• Noble metal–TiO2 supported catalysts for the catalytic ozonation of parabens mixtures

  Publication

  • J. Gomes
  • K. Bednarczyk
  • M. Gmurek
  • M. Stelmachowski
  • A. Zaleska-Medynska
  • F. Bastos
  • M. Quinta-Ferreira
  • R. Costa
  • R. Quinta-Ferreira
  • R. Martins

  - PROCESS SAFETY AND ENVIRONMENTAL PROTECTION - Year 2017

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• The oxidation of limonene at raised pressure and over the various titanium-silicate catalysts

  Publication

  • A. Wróblewska
  • E. Makuch
  • P. Miądlicki

  - Polish Journal of Chemical Technology - Year 2015

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• Novel catalysts for low temperature synthesis of single wall carbon nanotubes

  Publication

  • M. Rümmeli
  • A. Grüneis
  • M. Löffler
  • O. Jost
  • R. Schönfelder
  • C. Kramberger
  • D. Grimm
  • T. Gemming
  • A. Barreiro
  • E. Borowiak‐Palen... and 5 others

  - physica status solidi (b) - Year 2006

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• Fused FeCo catalysts for hydrogen production by means of the ammonia decomposition reaction

  Publication

  • Z. Lendzion-Bieluń
  • W. Arabczyk
  • Z. Lendzion-Bieluń

  - Catalysis Today - Year 2013

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• Nanocrystalline Polymer Impregnated [Fe(pz)Pt(CN)4] Thin Films Prepared by Matrix-Assisted Pulsed Laser Evaporation

  Publication

  • S. Mirosław
  • R. Jendrzejewski
  • D. Maskowicz
  • G. Yann
  • A. C. Gosh
  • M. Gazda
  • J. Czechowski
  • G. Śliwiński

  - EUROPEAN JOURNAL OF INORGANIC CHEMISTRY - Year 2019

  In this work, the fabrication of [Fe(pz)Pt(CN)4] (pz = pyrazine) thin films by means of matrix-assisted pulsed laser evaporation (MAPLE) was investigated. As starting material, a cryogenically cooled suspension of anocrystalline [Fe(pz)Pt- (CN)4] (0.35wt.-%) in a mixture of 1,1-dichloroethane and polyethylene glycol (PEG) was used. Films of a thickness up to 150–200 nm were deposited on Si substrates by laser ablation at λ = 1064...

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• SEM images of MXene catalysts

  Open Research Data

  open access

  • B. Zielińska
  • B. Środa

  Data contain results SEM measurements of the Ti3C2Tx MXenes produced via acidic etching aluminum from MAX Phase (Ti3C2-Al-Ti3C2-Al-Ti3C2) using different etching agents, HF/HCl and HF/H2SO4 with different weight ratios (1:3, 1:4, and 1:5). The samples were labeled as MXene HF/HCl X:Y and MXene HF/H2SO4 X:Y, where X:Y means the acids weight ratios. MAX...

• TGA data of MXenes catalysts

  Open Research Data

  open access

  • B. Zielińska
  • B. Środa

  Data contain results from TGA measurement of the Ti3C2Tx MXenes produced via acidic etching aluminum from MAX Phase (Ti3C2-Al-Ti3C2-Al-Ti3C2) using different etching agents, HF/HCl and HF/H2SO4 with different weight ratios (1:3, 1:4, and 1:5). The samples were labeled as MXene HF/HCl X:Y and MXene HF/H2SO4 X:Y, where X:Y means the acids weight ratios. ...

• XRD patterns of MXenes catalysts

  Open Research Data

  open access

  • B. Zielińska
  • B. Środa

  Data contain results from XRD measurements of the Ti3C2Tx MXenes produced via acidic etching aluminum from MAX Phase (Ti3C2-Al-Ti3C2-Al-Ti3C2) using different etching agents, HF/HCl and HF/H2SO4 with different weight ratios (1:3, 1:4, and 1:5). The samples were labeled as MXene HF/HCl X:Y and MXene HF/H2SO4 X:Y, where X:Y means the acids weight ratios....

• Raman spectra of MXenes catalysts

  Open Research Data

  open access

  • B. Zielińska
  • B. Środa

  Data contain results from Raman spectroscopy of the Ti3C2Tx MXenes produced via acidic etching aluminum from MAX Phase (Ti3C2-Al-Ti3C2-Al-Ti3C2) using different etching agents, HF/HCl and HF/H2SO4 with different weight ratios (1:3, 1:4, and 1:5). The samples were labeled as MXene HF/HCl X:Y and MXene HF/H2SO4 X:Y, where X:Y means the acids weight ratios. ...

• Ni-based compounds in multiwalled graphitic shell for electrocatalytic oxygen evolution reactions

  Open Research Data

  open access

  • E. Mijowska
  • A. Rojek
  • M. Aleksandrzak
  • G. Leniec
  • K. Maślana
  • X. Chen

  This study investigates Ni-based compounds (Ni, NiO, Ni3C) coated with a graphitic shell as electrocatalysts for the oxygen evolution reaction (OER). Electron paramagnetic resonance (EPR) and X-ray diffraction (XRD) are employed to identify the presence and contribution of Nickel ions (Ni0, Ni2+, Ni3+) and determine the phase composition. Electrochemical...

• Assessment with mechanical Barkhausen effect of residual stress in grain oriented polycrystalline 3% Si-Fe sheet

  Publication

  • B. Augustyniak
  • P. Maciakowski
  • L. Piotrowski
  • M. Chmielewski

  - IEEE TRANSACTIONS ON MAGNETICS - Year 2011

  W tym artykule zostały opisane badania naprężeń resztkowych w blachach wykonanych z 3% si-fe o zorientowanym ziarnie za pomocą mechanicznego efektu barkhausena (mebn). badano blachy o 3 różnych orientacjach ziaren względem głównej osi próbki: 0, 45, 90 stopni. badania mebn przeprowadzano wzbudzając drgania skrętne oraz drgania gięte. zmierzone maksima obwiedni napięcia skutecznego mebn znajdują się dla badanych próbek w regionie...

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• The kinetics of phenol decomposition under UV irradiation with and without H2O2 on TiO2, Fe–TiO2 and Fe–C–TiO2 photocatalysts

  Publication

  • B. A. Tryba
  • A. Morawski
  • M. Inagaki
  • M. Toyoda

  - APPLIED CATALYSIS B-ENVIRONMENTAL - Year 2006

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• FE analysis of size effects in reinforced concrete beams without shear reinforcement based on stochastic elasto-plasticity with non-local softening.

  Publication

  • E. Korol
  • J. Tejchman
  • Z. Mróz

  - FINITE ELEMENTS IN ANALYSIS AND DESIGN - Year 2014

  W artykule przedstawiono wyniki analizy MES dotyczącej deterministycznego i statystycznego efektu skali w żelbetowych belkach bez zbrojenia na ścinanie. W analizie zastosowano prawo sprężysto-plastyczne z nielokalnym osłabieniem. Wyniki analizy porównano z doświadczeniami i modelem skali Bazanta.

• The effect of Fe and Ru substitution on the superconductivity in MgCNi3

  Publication

  • T. Klimczuk
  • R. Cava
  • T. Klimczuk

  - SOLID STATE COMMUNICATIONS - Year 2004

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• Study on stable dispersion of functionalized Fe-MWCNTs

  Publication

  • C. Tripisciano
  • S. Costa
  • X. Chen
  • E. Borowiak-Palen
  • E. Mijowska
  • X. Chen

  - DIAMOND AND RELATED MATERIALS - Year 2010

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• Dynamical properties of ordered Fe–Pt alloys

  Publication

  • M. Sternik
  • S. Couet
  • J. Łażewski
  • P. Jochym
  • K. Parlinski
  • A. Vantomme
  • K. Temst
  • P. Piekarz

  - Journal of Alloys and Compounds - Year 2015

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• Dynamics and stability of icosahedral Fe–Pt nanoparticles

  Publication

  • P. Jochym
  • J. Łażewski
  • M. Sternik
  • P. Piekarz

  - PHYSICAL CHEMISTRY CHEMICAL PHYSICS - Year 2015

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• The effect of Fe and Ru substitution on the superconductivity in MgCNi_3

  Publication

  • T. Klimczuk
  • R. J. Cava

  - Year 2004

  Dyskutowany jest efekt częściowego podstawienia żelazem (3d) i rutenem (4d) w miejsce niklu w intermetalicznym nadprzewodniku MgCNi3. Temperatura krytyczna w obu przypadkach obniża się monotonicznie wraz ze wzrostem koncentracji domieszki. Jednakże bardziej gwałtowny zanik T_c w przypadku MgCNi_(3-x)Fe_x sugeruje, że elektrony 3d żelaza rozrywają nadprzewodzące pary Coopera.

• FE modelling of brittle materials at the meso-scale

  Publication

  • J. Tejchman
  • Ł. Skarżyński

  - Year 2009

  Artykuł omawia obliczanie lokalizacji odkształceń w elementach betonowych poddanych rozciąganiu. Obliczenia wykonano dla betonu na poziomie mezo. Obliczenia wykonano przy zastosowaniu modelu zniszczeniowego z degradacją sztywności rozszerzonego o nielokalność.

• Proton-Electron Hole Interactions in Sr(Ti,Fe)O3−δ Mixed-Conducting Perovskites

  Publication

  • T. Miruszewski
  • W. Skubida
  • P. Winiarz
  • K. Dzierzgowski
  • A. D. Mielewczyk-Gryń
  • S. L. Wachowski
  • M. Gazda

  - JOURNAL OF THE ELECTROCHEMICAL SOCIETY - Year 2022

  Oxides in which total electrical conductivity is determined by the partial conductivities of three types of charge carriers i.e. holes/ electrons, oxygen ions, and protons are key components of well-functioning proton ceramic fuel cells. Apart from electrochemical properties also easily modified microstructure is an important feature of the electrodes. In the paper, a group of SrTi1−xFexO3−δ (STF, x = 0.2–0.8) perovskites prepared...

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• Detoxification of parabens using UV-A enhanced by noble metals—TiO2 supported catalysts

  Publication

  • J. Gomes
  • I. Leal
  • K. Bednarczyk
  • M. Gmurek
  • M. Stelmachowski
  • A. Zaleska-Medynska
  • M. Quinta-Ferreira
  • R. Costa
  • R. Quinta-Ferreira
  • R. Martins

  - Journal of Environmental Chemical Engineering - Year 2017

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• Silicon polypodands: a new class of efficient solid–liquid phase-transfer catalysts

  Publication

  • A. Maia
  • D. Landini
  • B. Leska
  • G. Schroeder
  • B. Leska

  - TETRAHEDRON - Year 2004

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• A new type of B-podand catalysts for solid–liquid phase transfer reactions

  Publication

  • B. Łęska
  • R. Pankiewicz
  • G. Schroeder
  • A. Maia
  • B. Leska

  - Tetrahedron Letters - Year 2006

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• Tuning Carbon Nanotubes Through Poor Metal Addition to Iron Catalysts in CVD

  Publication

  • A. Bachmatiuk
  • F. Schäffel
  • D. Plachá
  • G. Martynková
  • N. Ioannides
  • T. Gemming
  • T. Pichler
  • R. Kalenczuk
  • E. Borowiak‐Palen
  • M. Rümmeli
  • E. Mijowska

  - FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES - Year 2010

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• Effect of Cobalt Addition on the Activity of Nanocrystalline Iron Catalysts in the Cracking of Methane Reaction

  Publication

  • K. Maj
  • I. Kocemba
  • Z. M. Lendzion-Bieluń
  • W. Arabczyk

  - ADSORPTION SCIENCE & TECHNOLOGY - Year 2015

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• New dioxomolybdenum(VI) complexes of tetradentate Schiff base as catalysts for epoxidation of olefins

  Publication

  • K. Ambroziak
  • R. Pełech

  - Journal of Molecular Catalysis A: Chemical - Year 2004

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