Dissertations / Theses on the topic 'Ziegler-natta catalysi'
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Wu, Long. "Ethylene polymerization over morphology-controlled Ziegler-Natta catalysts." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0016/NQ46947.pdf.
Full textDai, Shuanghua Patrick. "X-ray scattering and thermal analysis study of isotactic polypropylene /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2000.
Find full textSubmitted to the Dept. of Physics. Adviser: Peggy Cebe. Includes bibliographical references (leaves 246-251). Access restricted to members of the Tufts University community. Also available via the World Wide Web;
Humbert, Matthieu. "Réactivité et Spectroscopies pour caractériser l'effet des acides de Lewis en Catalyse de Polymérisation Ziegler-Natta." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1352.
Full textThe understanding of active sites structure in Ziegler-Natta catalysis remains academically and industrially challenging. Recently, the use of Lewis acids during the preparation of Ziegler-Natta catalysts has led to activity enhancements in ethylene (and α-olefin) polymerization. Under these optimal activity conditions and to assess the Lewis-acid role, we have developed spectroscopic methods, in particular solid-state-NMR, using different observable nuclei at the active-center vicinity. Various treatments by Lewis acids were first performed on a native and industrially relevant Ziegler-Natta precatalyst (TiCl4/MgCl2/Lewis bases: THF or EtOH). These Lewis acids lead to an increase of activity in polymerization, in particular BCl3, without any modification of polymer properties. By varying polymerization conditions, we have shown that Lewis acid pre-treatments reveal new active sites identical to the ones inherently present at the native precatalyst surface. BCl3 pre-treatment on Ziegler-Natta precatalysts was then monitored by solid-state-NMR spectroscopy. The reaction between Lewis acid and Lewis bases from “activated”-MgCl2 support has been evidenced. The activation step by reaction between precatalyst and an organoaluminium compound (alkylation step accompanied by a reduction of titanium (IV) to paramagnetic titanium (III)), has also been studied by spectroscopic on paramagnetic species in order to observe preactive-site formation in olefin polymerization before ethylene introduction. Finally, in a more exploratory context, BCl3 pre-treatment has been used to activate (FeCl2/MgCl2/Lewis-base: THF) precatalysts, which are originally inactive when contacted with organoaluminium compounds. Activities comparable to titanium-based Ziegler-Natta precatalysts are subsequently observed. No major differences in ethylene polymerization were noticed except that these Iron-based precatalysts retain an excellent activity at room temperature. The spectroscopic study allows to highlight the FeCl2 complexation with THF at the precatalyst surface and the modification of Iron oxidation state after alkylation
Bertrand, Pascale. "Modélisation de la polymérisation de l'éthylène par catalyse Ziegler-Natta." Vandoeuvre-les-Nancy, INPL, 1988. http://www.theses.fr/1988NAN10080.
Full textBierwagen, Erik Paul Goddard William A. Goddard William A. "Computational studies of Ziegler-Natta catalysis and concurrent resonance computations /." Diss., Pasadena, Calif. : California Institute of Technology, 1995. http://resolver.caltech.edu/CaltechETD:etd-09112007-104050.
Full textHajela, Sharad Bercaw John E. "Synthetic, structural, and mechanistic studies of homogeneous Ziegler-Natta catalysis /." Diss., Pasadena, Calif. : California Institute of Technology, 1995. http://resolver.caltech.edu/CaltechETD:etd-10052007-131102.
Full textBertrand, Pascale. "Modélisation de la polymérisation de l'éthylène par catalyse Ziegler-Natta." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37611906c.
Full textGaschard-Pasquet, Véronique. "Synthèse contrôlée de copolymères éthylène-butène par catalyse Ziegler-Natta bisupportée." Lyon 1, 1985. http://www.theses.fr/1985LYO10508.
Full textMARTINSKY, CYRIL. "Etude theorique de la reaction de ziegler-natta en catalyse heterogene." Paris 6, 2000. http://www.theses.fr/2000PA066312.
Full textGomez-Journaud, Corinne. "Mécanismes de la polymérisation du propylène par catalyse Ziegler-Natta hétérogène." Lyon 1, 1994. http://www.theses.fr/1994LYO10043.
Full textLutz, Marietjie. "Metallocene and Ziegler-Natta catalyzed polypropylene utilizing 1-heptene." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52334.
Full textENGLISH ABSTRACT: This study concerns the copolymerization of propylene with l-heptene. The percentage of l-heptene used as co-monomer in the polymerization reactions was varied from 5% to 20% in order to compare a variety of polymers with different percentages of comonomer incorporated. A variety of different catalysts were used for these polymerizations. Two metallocene catalysts were used: (A) the isospecific catalyst, rae- [ethylene bis(l-indenyl)]zirconium dichloride (rac-Et(Ind)2ZrCh2) and (B) the silylene-bridged catalyst, rac-Me2Si(2-MeBenz[ e]Ind)zZrCh2. Methylaluminoxane (MAO) was used as cocatalyst for these two metallocene catalysts. Another series of polymerization reactions was done using a Ziegler-Natta catalyst, namely TiCb/AlEt3/Si02. Characterization of the copolymers included usmg high temperature gel permeation chromatography (HTGPC) for molecular mass and molecular mass distributions, differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) to investigate the thermal and mechanical properties of the copolymers, nuclear magnetic resonance spectroscopy (NMR) for information concerning the microstructures of the copolymers and crystallization analysis fractionation (CRYSTAF) to investigate the short chain branching of the copolymers. Comparative studies were done on the different catalysts and the polymer properties. The synthesized polymers were also compared with copolymers of propylene with l-hexene and l-octene.
AFRIKAANSE OPSOMMING: Hierdie studie behels die kopolimerisasie van propileen met I-hepteen. Die persentasie van I-hepteen wat as komonomeer in die polimerisasie-reaksies gebruik is, is van 5% tot 20% gevarieer. 'n Verskeidenheid van verskillende kataliste is gebruik vir hierdie polimerisasies. Twee metalloseenkataliste is gebruik: (A) die isospesifieke katalis, rae- [etileen bis(l-indeniel)]zirconium dichloried (rac-Et(lnd)2ZrCh2) en (B) die silileengebrugde katalis, rac-Me2Si(2-MeBenz[e]Ind)2ZrCh2. Metielaluminoksaan (MAO) is as ko-katalis gebruik saam met bogenoemde twee metalloseenkataliste. 'n Ander reeks polimerisasie reaksies is gedoen waarin 'n Ziegler-Natta katalis gebruik is as aktiverende katalis, naamlik TiCi)/ AlEt3/Si02. Die karakterisering van die kopolimere sluit in: hoë temperatuur gel deurlatings chromatrografie (HTGPC) vir molekulêre massa en molekulêre massa verspreidings, differensiële skandering kalorimetrie (DSC) en dinamiese meganiese analisering (DMA) om sodoende die termiese en meganiese eienskappe van die polimere te ondersoek, kern magnetiese resonans spektroskopie (KMR) vir inligting in verband met die mikrostrukture van die kopolimere en kristallisasie analise fraksioneringstegniek (CRYSTAF) om die kort-kettingvertakkings van die kopolimere te ondersoek. Vergelykende studies IS op die verskillende katalisatore en die polimeereienskappe gedoen. Die gesintetiseerde polimere is ook met kopolimere van propileen met I-hekseen en l-okteen vergelyk.
Wolf, Carlos Rodolfo. "Preparação, caracterização e aplicação de catalisadores Ziegler-Natta na produção de polietileno de alta densidade." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2004. http://hdl.handle.net/10183/117393.
Full textIn this work, Ziegler-Natta heterogeneous supported catalysts were synthesized from TiCl4 and magnesium ethylate with MgCl2 in situ generation. It was observed that both catalyst tempering time and temperature influenced significantly the catalytic activity. The non tempered catalyst (ZNST) and the tempered catalyst (ZNT) presented the highest and the lowest catalyst activity, respectively, among other ones prepared in different tempering conditions. The catalysts ZNST and ZNT are amorphous solids and both have approximately the same surface area and particle size. By the catalyst chemical compositions, determined through different techniques, it was possible to conclude that thermal treatment (tempering) increases the Ti content and new oxygenated Ti sites in the catalyst. In this work was proposed a structure to the new site titanoxane different of that one obtained in the MgCl2 chloration of with TiCl4. These results allow proposing a core-shell model. The core of ZNT catalyst particle has mainly Ti site as chloridetitanate, and others, and the shell has primary particles that have mainly titanoxane sites. The ZNST catalyst has mainly Ti sites as chloridetitanate. The model was valid to explain HDPE properties produced by slurry process. The ZNST-TEA catalytic system showed the highest catalytic activity and the HDPE obtained with this system had the lower molecular weight and the lower polidispersity. The ZNT-IPRA catalytic system showed an intermediate activity and the HDPE obtained had the highest molecular weight and broader polidispersity.
Warren, Timothy Harold. "Organometallic Group 4 bis(borylamide) complexes as templates for Ziegler-Natta catalysis." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/88445.
Full textPaghaleh, Ali Sharif. "Studies in olefin gas phase polymerization using supported Ziegler-Natta catalysts." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.498843.
Full textKeller, Kayla. "Electronic structure and mechanistic studies of non-traditional Ziegler-Natta catalysts." Thesis, University of Sussex, 2012. http://sro.sussex.ac.uk/id/eprint/39437/.
Full textLorono, Gonzalez Daniel Jose. "An investigation of zwitterionic magnesium complexes as Ziegler-Natta polymerisation catalysts." Thesis, University of Edinburgh, 2004. http://hdl.handle.net/1842/12464.
Full textNacerodien, Mogamat Thaabit. "Investigation of polymer grade blending in Ziegler-Natta Catalysed ethylene polymerisation systems." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9122.
Full textPolyethylene is one of the most widely used polymers to date and it is an important commodity in a variety of fields. Most existing polyethylene plants operate on technology involving heterogeneous Ziegler-Natta catalysts. Plants often change operating conditions to produce different polymer grades; this allows them to cater to a larger polymer market. A side-effect of this practice is the unwanted formation of off-spec polymer during the grade transition periods. Numerous studies have been conducted to address the issue of off-spec polymer formation. These studies involve applying optimal control theory to minimise the grade transition time or to minimise the amount of off-spec polymer generated during the transient period. This field of study is known as grade transition optimisation. The current study aims to provide an alternative approach to addressing the problem of offspec accumulation. It is proposed that stored off-spec polymer is blended with virgin polymer to provide a saleable and desirable product. The approach might be different, but the same techniques used in grade transition optimisation are applied. Polyethylene produced using Ziegler-Natta catalysts have relatively linear chains, thus a chain length distribution coefficient is sufficient to characterise the polymer product. The number average chain length and polydispersity index are adequate representatives of this distribution for reporting the properties of a polyethylene grade. For the purpose of applying optimal control theory, a polyethylene production process model was developed to calculate these average properties using a kinetic scheme based on fundamental principles. This process model is able to predict the polymer properties under both steady-state and unsteady-state behaviour. A key feature of the model is its ability to solve the system with low computational expense due to the use of the segregation approach to link particle properties to the overall bulk phase. This is especially useful since optimisation algorithms used in optimal control theory are iterative by nature. The Differential Evolution Algorithm (DEA) was used to minimise the objective functions that were developed for the optimisation schemes due to its ability to evaluate objective functions in parallel. A model of the blending aspect of the process was developed where it was derived that the polymer moments are additive on a mass basis. Pure grades were blended in a laboratory in various mass ratios and analysed using GPC to determine their molecular weight distribution curves. It was found that the model-predicted curves and the experimentally-determined curves were an excellent match, thus validating the model. In the current study, three procedures for blending off-spec material under standard industry conditions are proposed. The first method involves the introduction of off-spec polymer on a continuous basis to the virgin polymer stream during steady-state operation.
Shafagh, Dehghani Seyedeh. "Study of ethylene/propylene polymerization, using a 4th generation Ziegler-Natta catalyst: Effect of external donor and feed ratio on polymerization." Thesis, KTH, Skolan för kemivetenskap (CHE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147523.
Full textSilverman, Joel Samuel. "Adventures in group 13 chemistry /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Full textHair, Gregory Scott. "Synthesis, structure and reactivity of group 13 Lewis acids and group 4 metallocene zwitterions /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Full textCorden, Jonathan P. "The study and synthesis of Group 4 transition metal complexes in Ziegler-Natta catalysis." Thesis, University of Warwick, 1997. http://wrap.warwick.ac.uk/2471/.
Full textReid, Steven Marshall 1971. "Chelating polyamido complexes or rhenium, molybdenum, and hafnium : organometallic synthesis to Ziegler-Natta catalysis." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/47562.
Full textLiang, Lan-Chang 1967. "Early transition metal complexes containing tridentate amido ligands : a systematic approach to Ziegler-Natta catalysis." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85341.
Full textHoza, Adam. "Effect of Ethylene and Propylene on Performance of Ziegler - Natta Catalyst in Stopped - Flow Polymerization." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-320775.
Full textMa, Yinlin. "A mechanistic and synthetic study on Ziegler-Natta polymerization catalysts based on vanadium complexes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ38773.pdf.
Full textKeaton, Richard J. "Amidinate based catalysts for the stereospecific and living Ziegler-Natta polymerization of [alpha]-olefins." College Park, Md. : University of Maryland, 2003. http://hdl.handle.net/1903/312.
Full textThesis research directed by: Chemistry. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Dick, Caroline. "An investigation of organomagnesium bi/tridentate nitrogen ligand complexes as Ziegler-Natta polymerisation catalysts." Thesis, University of Edinburgh, 2002. http://hdl.handle.net/1842/13646.
Full textBarthel, Valérie. "Recherche rationnelle de nouvelles bases de Lewis externes en polymérisation du propylène et de l'éthylène par catalyse Ziegler-Natta." Nancy 1, 1995. http://www.theses.fr/1995NAN10095.
Full textSilveira, Leandro dos Santos. "Efeito das variáveis na preparação de adutos de cloreto de magnésio usados como suporte em catalisadores ziegler-natta de morfologia controlada." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2003. http://hdl.handle.net/10183/163885.
Full text4th Generation Ziegler-Natta catalysts (Z-N catalysts) are prepared with magnesium dichloride support with controlled morphology, obtained from ethanolic adducts of magnesium dichloride (MgCl2.nEtOH). The objective of this work was to optimize the balance between the independent variables reagent concentration, emulsion agitation speed and transfer pressure, in the preparation of the adduct with morphological control. The ethanolic adducts with spherical morphology control were prepared by controlled transfer of the molten adduct at 125 °C and quenching in nonsolvent at - 50 °C using the Controlled Turbulence Emulsion Method (CTEM). The activation of MgCl2.nEtOH was done by chemical route to remove the ethanol and consequently increase the surface area of the support. The adducts were prepared with EtOH/MgCl2 molar ratio of 3.5 or 63% (w/w) ethanol. The experiments were performed according to factorial design 23 at two levels and replicated central point. The dependent variables were the mean diameter and particle size distribution of the carrier, compacted bulk density, morphology and alcohol content incorporated in the adduct. The Z-N’s catalysts were obtained from TiCl4-treated media and an internal electron donor, and tested in standard polypropylene polymerization. It has been observed that size control (median diameter) of the carrier particle is highly dependent on the transfer rate, controlled by the pressure in the fusion reactor. The concentration of the reagent ( [MgCl2] ) had a significant effect on the four dependent variables. The stirring rate in the melt reactor or the cast adduct emulsion had significant effect only on the morphology of the support, this effect being smaller than that observed for the transfer pressure. The stirring speed was not significant in the CTEM transfer process, which is more susceptible to pressure variation in the reactor.
Duprez, Virginie. "Synthèse des hydroxyalkyl pyrazoles, leurs complexes de titane et application en polymérisation." Aix-Marseille 3, 2002. http://www.theses.fr/2002AIX30007.
Full textDuring this project consisting in the development of new post metallocene catalytic systems, we fixed us the following three objectives : the syntheses of new ligands, preparation of titanium complexes and polymerisation reactions. The first part describes the syntheses of several hydroxyalkyl pyrazoles families, easily access with the pyrazole nucleus in which one nitrogen is substituted with an hydroxy alkyl side chain. These heteroatomics ligands are synthesised via alkylation reaction, epoxide ring opening or direct condensation of b diketones with hydrazine derivatives. The second part deals with the study of coordination modes of the different ligands with Ti, the syntheses of Ti(IV) complexes and their characterisation. Finally, the application of these Ti complexes as polymerisation catalysts with alkenes revealed an interesting activity. Several of the single site catalysts are able to convert ethylene in high molecular weight polyethylene
Batt-Coutrot, Delphine. "Recherche de nouveaux catalyseurs isospécifiques destinés à la polymérisation du propylène : catalyse Ziegler-Natta et métallocène." Nancy 1, 2000. http://www.theses.fr/2000NAN10070.
Full textDuc, Sandrine. "Synthèse de (co)polymères d'hex-1-yne et de phénylacétylène par les catalyseurs de Ziegler-Natta et de métathèse : caractérisation de la microstructure des chaines par couplage pyrolyse - chromatographie en phase gazeuse/spectrométrie de masse." Vandoeuvre-les-Nancy, INPL, 1997. http://www.theses.fr/1997INPL044N.
Full textEnright, Dave S. "The search for new catalysts for Ziegler-Natta olefin polymerization: Exploratory studies in unusual direction." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/26331.
Full textSilva, Gustavo Monteiro da. "Copolimerização de 1,3-butadieno e alfa-olefinas com catalisadores à base de versatato de neodímio." Universidade do Estado do Rio de Janeiro, 2010. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=2765.
Full textIn this work, were performed copolymerization reactions of 1,3-butadiene with different alpha-olefins (1-hexene, 1-octene and 1-dodecene), using a ternary catalytic system of Ziegler-Natta, constituted by neodymium versatate, diisobutylaluminum hydride and t-butyl chloride. The catalytic system was also evaluated in homopolymerization reactions with the alpha-olefins. The reaction conditions, both the catalyst synthesis as the polymerization reactions, were kept constant. The influence of different content of each alpha-olefin (1, 3, 5, 10, 20 and 30% compared to 1,3-butadiene) on the polymerization conversion, the microstructure, molar mass, viscometric properties and thermal stability of polymers was studied. The influence of alpha-olefin chain size on polymerization characteristics was also evaluated. The polymers were characterized by infrared spectroscopy (FTIR), size exclusion chromatography (SEC), capillary viscometry and thermogravimetry (TG). The polymer microstructure, practically, did not change with the addition of alpha-olefins. The number average molecular mass (Mn) has not changed; while the weight average molecular mass (Mw) trended to increase. The intrinsic viscosity did not show a trend with the alpha-olefin addition, remaining in the range from 2.015 to 3.557 dL/g. The copolymer thermal stability showed a tendency to increase with the incorporation of alpha-olefins
Butcher, Mark Leslie. "A study of some novel cationic complexes of the group 4 metals and their applications in Ziegler-Natta catalysis." Thesis, University of Warwick, 1994. http://wrap.warwick.ac.uk/2542/.
Full textSchattenmann, Florian Johannes 1965. "Polyenes by regioselective, living polymerization using molybdenum alkylidene bis(carboxylate) initiators and Ziegler-natta catalysis employing new zirconium diamido complexes." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42770.
Full textMcCoy, John Themba. "Development of a computationally efficient model for the control of Ziegler-Natta catalysed industrial production of high density polyethylene." Doctoral thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20347.
Full textLorenzini, Pascal. "Polymérisation de l'éthylène sous haute pression : développement et validation de modèles de polymérisation radicalaire et de copolymérisation Ziegler-Natta." Vandoeuvre-les-Nancy, INPL, 1991. http://www.theses.fr/1991INPL032N.
Full textFerreira, Cíntia Nogueira. "Influência do agente de halogenação e da razão molar Cl:Nd na polimerização e nas características do polibutadieno obtido com catalisador Ziegler-Natta à base de neodímio." Universidade do Estado do Rio de Janeiro, 2008. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=2616.
Full textNesta Dissertação foi utilizado um sistema catalítico Zieger-Natta à base de neodímio para avaliar a influência do agente de halogenação e da razão molar halogênio:Nd sobre a atividade catalítica, a constante de velocidade de propagação, a conversão da polimerização, a microestrutura, a massa molecular e a polidispersão do polibutadieno 1,4-cis. O sistema utilizado era constituído por versatato de neodímio (NdV), hidreto de diisobutilalumínio (DIBAH) e um agente de halogenação. Os agentes halogenantes estudados foram: cloreto de t-butila (t-BuCl), sesquicloreto de etilalumínio (EASC) e cloreto de dietilalumínio (DEAC), em valores de razão molar Cl:Nd que variaram entre 0,5:1 e 5:1 e o dietil-eterato de trifluoreto de boro (BF3.Et2O), na razão molar F:Nd = 3:1. Os polímeros foram caracterizados por espectroscopia na região do infravermelho para determinação da microestrutura e por cromatografia de exclusão por tamanho para determinação das massas moleculares. O teor de unidades 1,4-cis variou de 90 a 98%, a massa molecular numérica média ( ) permaneceu na faixa entre 0,2 e 2x105, e a massa molecular ponderal média ( ) variou de 1,4 a 4x105
In this Dissertation a catalyst system based on neodymium was employed to evaluate the influence of halogen source and the halogen:Nd molar ratio on the catalyst activity, polymerization constant rate, polymerization conversion, molecular weight characteristics and microstructure of polybutadiene. The catalyst systems were formed by diisobutylaluminium hydride (DIBAH), neodymium versatate (NdV) and a halogen source. The halogenating agents studied were t-butyl chloride (t-BuCl), ethylaluminium sesquichloride (EASC) and diethylaluminium chloride (DEAC) in a nCl:nNd molar ratio in the range from 0,5 to 5, and boron trifluoride diethyl ether (BF3.Et2O). The polymers were characterized by infrared espectroscopy for determining the microstructure and by size exclusion chromatography to obtain the molecular mass characteristics. The cis-1,4 units contents varied from 90 to 98%, the number-average molecular mass ( ) varied from 0,2 to 2x105 and the weight-average molecular mass ( ) varied from 1,4 to 4x105
Tvrdý, Michal. "Stanovení kinetiky polymerace propenu na Zieglerových-Nattových katalyzátorech metodami násadové polymerace a Stopped-Flow za průmyslových podmínek." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401930.
Full textShichen, Yu. "CHAIN ENTANGLEMENTS EFFECTS IN NASCENT ULTRA-HIGH MOLECULAR WEIGHT POLYPROPYLENE SYNTHESIZED BY ZIEGLER – NATTA MULTIPLE-SITES AND METALLOCENE SINGLE-SITE CATALYSTS." University of Akron / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1620286973657457.
Full textGažo, Peter. "Vliv předpolymerace MgCl2- nosičovéhoTiCl4 katalyzátoru na polymeraci propenu a vlastnosti výsledného polypropenového prášku." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-376841.
Full textKolomazník, Vít. "Vliv katalytického systému na strukturu E/P kopolymerů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401947.
Full textHoza, Adam. "Vliv přídavku ethenu na aktivitu Z-N katalyzátoru pro nízkotlakou polymeraci propenu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-216658.
Full textAouak, Taïeb. "Homopolymérisation et copolymérisation des alcynes monosubstitués amorceées par les complexes de Ziegler-Natta : étude de réactions conduites en présence de catalyseurs solubles formés en associant un carboxylate de fer(III) et un alkylaluminium, caractérisation des polyalcynes." Vandoeuvre-les-Nancy, INPL, 1994. http://docnum.univ-lorraine.fr/public/INPL_T_1994_AOUAK_T.pdf.
Full textRamachandran, Ramnath. "Quantification of Structural Topology in Branched Polymers." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1326828758.
Full textLiu, Huaqin. "Etude de l'oligomérisation des alpha-oléfines amorcées par des systèmes bimétalliques à base de dérivés d'un métal de transition (groupe IV B) et de composés organoaluminiques." Paris 6, 1986. http://www.theses.fr/1986PA066087.
Full textFREDIANI, MARCO. "Polymerization of olefins by early and late transition metal catalysis." Doctoral thesis, 2004. http://hdl.handle.net/2158/591897.
Full textChen, You-Xian. "Specifically designed homogeneous Ziegler-Natta metallocene catalysts: Strategy, synthesis and polymerization catalysis." 1995. https://scholarworks.umass.edu/dissertations/AAI9524685.
Full textMischenko, John. "Preparation and investigation of model surfaces for the study of Ziegler-natta catalysis." Thesis, 1990. http://hdl.handle.net/1957/37473.
Full textGraduation date: 1991