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Annales UMCS, Chemistry

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ISSN (Print) 0137-6853 - ISSN (Online) 2083-358X
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[174 journals]

Solute permeation through lipid membrane: Statistical Rate Theory approach
- Abstract: A new model describing transport across lipid membrane was developed based on the Statistical Rate Theory (SRT) of interfacial transfer. In our calculations we replaced lipid membrane with well-defined octanol membrane. According to SRT the rate of solute transfer across water/octanol interface depends on the ratio of solute concentration in the both phases and the water/octanol partition coefficient. In the case of thick membranes and thick diffuse layers our model predicts almost linear dependence of flux on concentration gradient. However, for thin membranes and thin diffuse layers flux becomes nonlinear function of concentration gradient, especially for more polar solutes and higher gradients.
  Content Type Journal Article
  Category Research Article
  Pages 147-158
  
  DOI 10.2478/v10063-011-0014-x
  
  Authors
  W. Piasecki, Department of Biochemistry, Faculty of Physical Education and Sport in Biala Podlaska, The Josef Pilsudski University of Physical Education in Warsaw, Poland
  R. Charmas, The State College of Computer Science and Business Administration in Łomża, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:09 GMT
Scientific co-operation with professor Nazimek
- Abstract: In present paper there will be discussed examples of author's scientific co-operation with professor Nazimek. Generally all of them are from the area of heterogeneous catalysis including high dispersed metal phase mostly in the hydrogenolysis reactions of simple alkanes.
  Content Type Journal Article
  Category Reminiscence Article
  Pages 94-105
  
  DOI 10.2478/v10063-011-0010-1
  
  Authors
  J. Ryczkowski, Department of Chemical Technology, University of Maria Curie-Skłodowska, Pl. M. Curie-Sklodowskiej 3, 20-031 Lublin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:08 GMT
Investigations on hydrogenation of selected organic sulfur compounds on the Ni-Mo/Al2O3 catalyst in terms of natural gas desulfurization
- Abstract: Technological problems of natural gas desulfurization in syngases manufacturing plants have been discussed and the results of investigations on the activity of the model Ni-Mo/Al2O3 catalyst in hydrogenation of selected sulfur compounds have been presented. The HDS reaction rate is dependent on a compound structure. The hydrogenation rate on the Ni-Mo/Al2O3 catalyst for the given sulfur compound increases in the order: CS2(CH3)2S>C4H10S>C2H6S2C4H4S.
  Content Type Journal Article
  Category Research Article
  Pages 106-116
  
  DOI 10.2478/v10063-011-0011-0
  
  Authors
  K. Antoniak, Catalyst Department, Fertilizer Research Institute, Al. Tysiąclecia Państwa Polskiego 13A, 24-110 Puławy, Poland
  P. Kowalik, Catalyst Department, Fertilizer Research Institute, Al. Tysiąclecia Państwa Polskiego 13A, 24-110 Puławy, Poland
  R. Narowski, Catalyst Department, Fertilizer Research Institute, Al. Tysiąclecia Państwa Polskiego 13A, 24-110 Puławy, Poland
  M. Konkol, Catalyst Department, Fertilizer Research Institute, Al. Tysiąclecia Państwa Polskiego 13A, 24-110 Puławy, Poland
  J. Ryczkowski, Faculty of Chemistry, Department of Chemical Technology, Maria Curie-Sklodowska University, Pl. M. Curie-Sklodowskiej 3, 20-031 Lublin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:08 GMT
The effect of tetramethylthiourea on the Zn2+ ions electroreduction in the presence of different detergents
- Abstract: The effect of the mixed adsorption layers: tetramethylthiourea and chosen detergent on the Zn2+ ions electroreduction is described. The detergents concentration was 7.5·10-4 M, which was lower of its critical micellation point. Three detergents: cationic, neutral and anionic were chosen for this study. First two detergents inhibited the Zn2+ ions reduction at mercury electrode, the last detergent accelerated this process. Tetramethylthiourea eliminated the inhibiting effect of the detergent and accelerated the studied process stronger than in the detergents absence. Standard rate constants of Zn2+ ions electroreduction were determined by cyclic voltammetry and impedance measurements
  Content Type Journal Article
  Category Research Article
  Pages 117-128
  
  DOI 10.2478/v10063-011-0012-z
  
  Authors
  M. Klin, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq.3, 20-031 Lublin, Poland
  J. Nieszporek, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq.3, 20-031 Lublin, Poland
  D. Gugała-Fekner, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq.3, 20-031 Lublin, Poland
  D. Sieńko, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq.3, 20-031 Lublin, Poland
  J. Saba, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq.3, 20-031 Lublin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:08 GMT
Selected aspect in the separation of inorganic and organic species on ion exchangers and sorbents of various types
- Abstract: In the paper the example papers from the Department of Inorganic Chemistry are presented. They are connected with the research of sorption and separation of inorganic and organic species on ion exchangers and sorbents of various types are presented. The main subjects include physicochemical studies of metal ions removal on anion exchangers, chelating and modified ion exchangers as well as zeolites, sorption and separation of rare earth elements, recovery of noble metal particularly from chloride solutions by ion exchange or extraction method, application of the anion exchangers of various types in dyes removal from aqueous solutions and wastewaters and chemistry of porphyrins in the aspect of environmental protection.
  Content Type Journal Article
  Category Research Article
  Pages 129-146
  
  DOI 10.2478/v10063-011-0013-y
  
  Authors
  Z. Hubicki, Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 2. 20-031 Lublin, Poland
  M. Majdan, Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 2. 20-031 Lublin, Poland
  M. Gęca, Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 2. 20-031 Lublin, Poland
  A. Gładysz-Płaska, Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 2. 20-031 Lublin, Poland
  D. Kołodyńska, Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 2. 20-031 Lublin, Poland
  M. Makarska-Białokoz, Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 2. 20-031 Lublin, Poland
  M. Wawrzkiewicz, Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 2. 20-031 Lublin, Poland
  A. Wołowicz, Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 2. 20-031 Lublin, Poland
  G. Wójcik, Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 2. 20-031 Lublin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:08 GMT
The studies of the natural zeolite - clinoptylolite in reduction of nitrogen
- Abstract: This article presents the results of the research in the area of the possibilities of the utilization of natural zeolite- clinoptylolite for reduction of oxide nitrogen. The clinoptylolite type zeolite has the unique structure, high resistance against hydrothermal conditions and the ability to form strong acid centers. Various kinds of metals ions were inserted into the samples of zeolite using ion-exchange method. The effect of metals content was shown for clinoptylolite matrix and related to the performance of its pure hydrogen form. A comparison of the catalytic properties of Cu-, Co-, Fe-, Mn- and Ni-CLI was carried out for the NO reduction with methane. A eries of doubly substituted CoCu-CLI catalysts with different metal loading were studied too. Over the copper and cobalt-CLI was observed high nitric oxide conversion, especially at temperatures between 400 and 500°C. It was confirmed that the copper-cobalt-CLI catalysts have higher activity and durability than catalysts composed of iron, nickel and manganese supported on clinoptylolite. Moreover, the iron, nickel and manganese containing catalysts produced more nitrous oxide than nitrogen. The presence of both copper and cobalt species seems to be an indispensable condition for the high activity and selectivity in the NO reduction.
  Content Type Journal Article
  Category Research Article
  Pages 67-80
  
  DOI 10.2478/v10063-011-0008-8
  
  Authors
  W. Ćwikła-Bundyra, Institution of Environmental Chemistry, UMCS Pl. Marii Skłodowskiej - Curie 3, 20-031 Lublin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:07 GMT
Surfactants removal from water and wastewater using Co modified TiO2/Al2O3 photocatalysts
- Abstract: The photocatalytic oxidation of Triton X-100, its oxidation products: polyethylene glycol, phenol and also commercially available wash-up liquid in water in the band reactor of our construction with supported TiO2 catalysts was studied. As a photocatalyst Co-TiO2/Al2O3 was used. The main aim of these studies was the determination of catalytic activity of Co-TiO2/Al2O3 in pollutants removal from water and the effect of O2, H2O2 or UV addition on the photooxidation. It was found that the H2O2 addition has a detrimental influence on aerated wastewater containing surfactants, and UV has an increasing effect on process. 2 hours treatment of water is enough to obtain a significant COD reduction of all studied pollutants.
  Content Type Journal Article
  Category Research Article
  Pages 81-93
  
  DOI 10.2478/v10063-011-0009-7
  
  Authors
  B. Czech, Faculty of Chemistry, Department of Environmental Chemistry, Maria Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 3, 20-031 Lublin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:07 GMT
Thermal stability and pollutant adsorption efficiency of nanocomposites consisted of clay and polymeric quaternary ammonium salts
- Abstract: Polymer/layered silicate nanocomposites based on polymeric quaternary ammonium salts (ionenes) intercalated into the interlayer galleries of montmorillonite were synthesized. Zeta potential measurements were conducted to determine the amount of ionenes required to neutralize the negative charge of clay. The composition and structure of the obtained nanocomposites were examined by elemental analysis, ATR-FTIR and XRD. High dye sorption capacity was observed for the composite containing ionene 6,2.
  Content Type Journal Article
  Category Research Article
  Pages 47-59
  
  DOI 10.2478/v10063-011-0006-x
  
  Authors
  P. Natkański, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
  P. Kuśtrowski, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
  A. Kochanowski, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
  A. Białas, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
  Z. Piwowarska, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
  M. Michalik, Institute of Geological Sciences, Jagiellonian University, Oleandry 2a, 30-063 Kraków, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:06 GMT
Oxidation of methane over Ru/clinoptilolite catalysts
- Abstract: This paper describes the activity of ruthenium catalysts based on clinoptilolite, prepared by the ion exchange method, in the reaction of total methane oxidation. It has been shown thath the activity of the catalysts higher than metal oxide based ones, and is directly proportional to ruthenium loading.
  Content Type Journal Article
  Category Research Article
  Pages 60-66
  
  DOI 10.2478/v10063-011-0007-9
  
  Authors
  M. Kuśmierz, Department of Environmental Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, M. Curie-Skłodowska Sq. 3, 20-231 Lublin, Poland.
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:06 GMT
Synthesis and characterization of Pt/CeOx systems for catalytic CO oxidation reaction
- Abstract: Four different ceria supported catalyst were prepared by impregnation method with Pt(NO3)2 solution. The two supports are commercially available (MaTeck) and the other two were prepared by precipitation and microwave assisted hydrothermal method (MAH) respectively. The phase composition and average crystallite size of the catalysts were characterised with XRD technique. Finally the catalytic activity in CO oxidation reaction were determined in plug flow reactor in temperature range 300-900 K with 1 K resolution. The catalysts obtained in both precipitation and MAH methods exhibit catalytic activity at room temperature whereas catalysts obtained on MaTeck supports are not active at those conditions. In turn, catalysts based on MaTeck support are more active in temperature range 420-700 K. The different activities are attributed to difference in average crystallite sizes and in support morphology.
  Content Type Journal Article
  Category Research Article
  Pages 37-46
  
  DOI 10.2478/v10063-011-0005-y
  
  Authors
  R. J. Wróbel, Institute of Organic Chemical Technology, West Pomeranian University of Technology
  S. łagonda, Institute of Organic Chemical Technology, West Pomeranian University of Technology
  U. Narkiewicz, Institute of Organic Chemical Technology, West Pomeranian University of Technology
  R. Pełech, Institute of Organic Chemical Technology, Institute of Chemical and Environment Engineering, Pulaskiego 10, 70-322 Szczecin, Poland
  S. Becker, Chemisches Institut, Otto-von-Guericke Universität, Universitätsplatz 2, 39106 Magdeburg, Germany
  L. Szymaszkiewicz, Szczecin University, Institute of Mathematics, Wielkopolska 15, 70-451 Szczecin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:05 GMT
Li-ion batteries for electric vehicles
- Abstract: This paper presents brief outlook for Li-ion battery market for electric vehicles in comparison with that for portable electronics. The second part of the article presents electrochemical model as well as the main points of material issues in lithium batteries. Review of currently available and possible for future application cathode materials is provided. Stress is placed on importance transport properties of materials.
  Content Type Journal Article
  Category Research Article
  Pages 23-36
  
  DOI 10.2478/v10063-011-0004-z
  
  Authors
  J. Molenda, Department of Hydrogen Energy, Faculty of Energy and Fuels, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:05 GMT
Transformation of alumina supported nickel catalysts during hydrodechlorination of 1,2-dichloroethane
- Abstract: Our previous work with Sibunit carbon supported nickel catalysts investigated in the reaction of 1,2-dichloroethane hydrodechlorination showed the transformation of nickel to an fcc NiCx solution and/or even to an hcp Ni3C carbide phase during reaction. Carbon entering to nickel was considered to originate from the organic molecule, not from the carbon support. To substantiate this interpretation we decided to carry out the title reaction in the presence of alumina supported nickel catalysts. Hydrodechlorination of 1,2-dichloroethane performed on differently metal loaded Ni/Al2O3 catalysts resulted in a massive carbiding of nickel, leading to the Ni3C carbide phase. This effect was better marked for the catalysts with a higher Ni loading (≥2 wt.%). However, for very high Ni loading (20 wt.%) characterized by bigger metal crystallites (~30 nm), only a portion of Ni was carbided.
  Content Type Journal Article
  Category Research Article
  Pages 4-11
  
  DOI 10.2478/v10063-011-0002-1
  
  Authors
  W. Juszczyk, Institute of Physical Chemistry of PAS, ul. Kasprzaka 44/52, 01-224 Warszawa, Poland
  Z. Karpiński, Institute of Physical Chemistry of PAS, ul. Kasprzaka 44/52, 01-224 Warszawa, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:05 GMT
The 65th Birthday of Professor Dobiesław Nazimek
- Abstract: The 65th Birthday of Professor Dobiesław Nazimek
  Content Type Journal Article
  Category Biographic Article
  Pages 1-3
  
  DOI 10.2478/v10063-011-0001-2
  
  Authors
  Janusz Ryczkowski
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:05 GMT
Synthesis of CrOx/Al2O3 catalyst in sol-gel conditions
- Abstract: A series of CrOx/Al2O3 samples with various Cr/Al molar ratios (0.1-1.0) have been synthesized by the sol-gel technique from Al(C3H7O)3 (aluminium isopropoxide) and chromic acid precursors. The synthesis applied allowed obtaining the final product in monolithic (nonfractured upon drying) form with no use of drying control chemical additives. All samples are characterized by thermal analysis, XRD, and TEM. The low temperature nitrogen adsorption measurements indicate the presence of mesopores. The use of the sol-gel technique permitted a high degree of homogeneity of binary systems up to the Cr/Al molar ratio of 0.5.
  Content Type Journal Article
  Category Research Article
  Pages 12-22
  
  DOI 10.2478/v10063-011-0003-0
  
  Authors
  P. Kirszensztejn, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
  R. Przekop, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 66
  Journal Issue Volume 66, Volume 66 / 2011
  PubDate: Mon, 19 Dec 2011 15:33:05 GMT
Syntheses, structures and properties of halogenanilides derivatives of trichlorophenoxyacetic acids
- Abstract: The results of the study on the syntheses and properties of halogenanilides derivatives of trichloro- phenoxyacetic acids are presented. Compounds were synthesized during the reaction of trichlorophenoxyacetic chlorides with halogenaniline and N, N-diethylaniline or trichlorophenoxyacetic acids with halogenanilines and phosphorus oxychloride. The chemical derivatives were isolated with high yield and identified on the basis of elemental analysis, FTIR, 1H NMR and 13C NMR spectroscopy as well. Their physico-chemical properties were examined, along with their fungicidal, insecticidal, acaricidal and herbicidal activity. It was found that the highest herbicidal activity characterizes the derivatives of 2,4,5-trichlorophenoxyacet-4-fluoroanilide, 2,4,5-trichlorophenoxyacet-4-chloro-3-(trifluoromethyl) anilide, 2,4,5-trichlorophenoxyacet-3-(trifluoromethyl)anilide and 2,4,5-trichlorophenoxyacet-4-chloro-3-fluoroanilide.
  Content Type Journal Article
  Category Research Article
  Pages 155-168
  
  DOI 10.2478/v10063-010-0014-2
  
  Authors
  B. Tarasiuk, Faculty of Chemistry Department of Organic Chemistry Gliniana, Maria Curie-Skłodowska University, 33, 20-614 Lublin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 65
  Journal Issue Volume 65, Volume 65 / 2010
  PubDate: Fri, 28 Jan 2011 19:35:07 GMT
Spectroscopic studies of alumina supported nickel catalysts precursors: Part II - catalysts prepared from alkaline solutions
- Abstract: 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).
  Content Type Journal Article
  Category Research Article
  Pages 121-131
  
  DOI 10.2478/v10063-010-0012-4
  
  Authors
  S. Pasieczna-Patkowska, Faculty of Chemistry, Department of Chemical Technology, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland
  J. Ryczkowski, Faculty of Chemistry, Department of Chemical Technology, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 65
  Journal Issue Volume 65, Volume 65 / 2010
  PubDate: Fri, 28 Jan 2011 19:35:06 GMT
Scientific co-operation with professor Borowiecki
- Abstract: In present paper there will be discussed examples of author's scientific co-operation with professor Borowiecki. Generally all of them are from the area of heterogeneous catalysis with a feedback to chemical technology and an environmental protection.
  Content Type Journal Article
  Category Research Article
  Pages 132-154
  
  DOI 10.2478/v10063-010-0013-3
  
  Authors
  J. Ryczkowski, Department of Chemical Technology, University of Maria Curie-Skłodowska, pl. M. Curie-Sklodowskiej 3, 20-031 Lublin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 65
  Journal Issue Volume 65, Volume 65 / 2010
  PubDate: Fri, 28 Jan 2011 19:35:06 GMT
Effectiveness diffusion coefficient in nickel catalyst grain determined by measurements of catalytic reaction rate
- Abstract: Effectiveness diffusion coefficient in nickel catalyst grain determined by measurements of catalytic reaction rate
  Content Type Journal Article
  Category Research Article
  Pages 96-99
  
  DOI 10.2478/v10063-010-0010-6
  
  Authors
  K. Stołecki, Fertilizers Research Institute Puławy
  K. Michalska, Fertilizers Research Institute Puławy
  R. Narowski, Fertilizers Research Institute Puławy
  A. Gołębiowski, Fertilizers Research Institute Puławy
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 65
  Journal Issue Volume 65, Volume 65 / 2010
  PubDate: Fri, 28 Jan 2011 19:35:05 GMT
The influence of gold on the properties of silica mesoporous materials
- Abstract: 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.
  Content Type Journal Article
  Category Research Article
  Pages 100-120
  
  DOI 10.2478/v10063-010-0011-5
  
  Authors
  W. Gac, Department of Chemical Technology, University of Maria Curie-Skłodowska, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
  S. Pasieczna-Patkowska, Department of Chemical Technology, University of Maria Curie-Skłodowska, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
  L. Kępiński, Institute of Low Temperature and Structure Research, PAS, Okólna 2, 55-422 Wrocław, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 65
  Journal Issue Volume 65, Volume 65 / 2010
  PubDate: Fri, 28 Jan 2011 19:35:05 GMT
The study on alkali-promoted Co-Mo/Al2O3 catalysts for water-gas shift process
- Abstract: The following contribution presents the results of studies on the effects of alkali metals on the physicochemical properties and the effectiveness of a Co-Mo/Al2O3 catalyst for the water gas shift reaction. It has been shown that the addition of alkali metals modifies the properties of Co-Mo catalysts, resulting in a significant increase in activity of catalysts in water gas shift reaction. The greatest effect was observed in the case of sodium-promoted reaction.
  Content Type Journal Article
  Category Research Article
  Pages 88-95
  
  DOI 10.2478/v10063-010-0009-z
  
  Authors
  K. Antoniak, Catalysts Department, Fertilizers Research Institute, al. Tysiąclecia Państwa Polskiego 13A, 24-110 Puławy, Poland
  P. Kowalik, Catalysts Department, Fertilizers Research Institute, al. Tysiąclecia Państwa Polskiego 13A, 24-110 Puławy, Poland
  J. Ryczkowski, Faculty of Chemistry, Department of Chemical Technology, Maria Curie-Sklodowska University, Pl. M. Curie-Sklodowskiej 3, 20-031 Lublin, Poland
  Journal Annales UMCS, Chemistry
  
  Online ISSN 0137-6853
  Journal Volume Volume 65
  Journal Issue Volume 65, Volume 65 / 2010
  PubDate: Fri, 28 Jan 2011 19:35:04 GMT