Дисертації з теми "Spectroscopic. kinetic and mechanistic study"
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Silver, Sunshine Christine. "Kinetic, mechanistic and spectroscopic studies of spore photoproduct lyase." Diss., Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/silver/SilverS1210.pdf.
Повний текст джерелаGómez, Martín Juan Carlos. "Spectroscopic, kinetic and mechanistic studies of atmospherically relevant I2-O3 photochemistry." Berlin Logos-Verl, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2927252&prov=M&dok_var=1&dok_ext=htm.
Повний текст джерелаGómez, Martín Juan Carlos. "Spectroscopic, kinetic and mechanistic studies of atmospherically relevant I2/O3 photochemistry /." Berlin : Logos-Verl, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=2927252&prov=M&dok_var=1&dok_ext=htm.
Повний текст джерелаWhyte, Lynden J. "A kinetic and mechanistic study of tropospheric reactions." Thesis, University of East Anglia, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314391.
Повний текст джерелаEl-Agez, Bassam Ali. "A kinetic and spectroscopic study on cytochrome c oxidase." Thesis, University of Essex, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305116.
Повний текст джерелаKalinga, Shivashankar. "Peroxynitrite-induced modifications of myoglobin : a kinetic and mechanistic study /." Zürich : ETH, 2005. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16014.
Повний текст джерелаSiu, Tung. "Kinetic and mechanistic study of aqueous sulfide-sulfite-thiosulfate system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0007/MQ45585.pdf.
Повний текст джерелаScott, Laura-Marie. "Kinetic and mechanistic study of Lilestralis, a synthetic muguet fragrance molecule." Thesis, University of Aberdeen, 2011. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=165414.
Повний текст джерелаSouza, Valdir Araujo de. "Corrosion and erosion-corrosion of wc-based cermet coatings - a kinetic and mechanistic study." Thesis, Heriot-Watt University, 2004. http://hdl.handle.net/10399/318.
Повний текст джерелаFakih, Mariam. "Réactivité atmosphérique des principaux produits d'oxydation de première génération des monoterpènes." Electronic Thesis or Diss., Reims, 2024. http://www.theses.fr/2024REIMS010.
Повний текст джерелаMonoterpenes are biogenic volatile organic compounds (BVOCs) widely emitted into the atmosphere by forests and plant crops, thus representing significant players in atmospheric chemistry. Their high reactivity towards atmospheric oxidants has been the subject of several studies in the literature. However, their first-generation oxidation products are less evaluated, and could partly explain the missing reactivity and the underestimation of AOS formation by models. In this context, this study aims to understand the atmospheric reactivity of five VOCBs (nopinone, myrtenal, ketolimonene, caronaldehyde, and limononaldehyde) that are first-generation oxidation products of α- and β-pinene and limonene. This work focuses on the study of degradation processes by determining the kinetics and mechanism of oxidation reactions of the targeted BVOCs by the OH radical, chlorine and ozone, as well as their potential photolysis through the study of their UV-Vis absorption spectra. To this end, the oxidation reactions of five first-generation monoterpene oxidation products were studied in an atmospheric simulation chamber coupled with various analytical techniques (FTIR, SPME-GC/MS, PTR-MS-ToF).The spectroscopic study focused on determining the UV-visible absorption spectra of the five compounds in the 200-400 nm range at a temperature of 353 ± 2 K, and at a pressure below the saturation vapor pressure of COVB. The spectra show a broad absorption band between 240 and 370 nm, corresponding to the n-π* band of the carbonyl group. The significant absorption of these compounds above 290 nm suggests that they are likely to be removed by photolysis in at least a few hours.The temperature kinetic studies carried out in this thesis concern the (VOC+ OH) reaction for nopinone, myrtenal, ketolimonene and limononaldehdye, the (VOC + Cl) reaction for nopinone, myrtenal and ketolimonene and the ozonolysis reaction for ketolimonene, myrtenal and limononaldehyde. Experiments were carried out using either the relative or the absolute kinetic method in the temperature range 298 - 353 K and at atmospheric pressure. The kinetic results obtained made it possible to calculate the atmospheric lifetimes of these compounds. Their atmospheric persistence does not exceed one day. Overall, these lifetimes show that the main route of elimination for the compounds studied is through their reaction with OH radicals, with significant competition in coastal regions from Cl radicals. The study also revealed a generally positive trend for OH radicals and ozone with increasing temperature, and a negative trend for chlorine.Finally, mechanistic ozonolysis studies of ketolimonene, myrtenal and limononaldehyde were carried out. These studies consist of monitoring the temporal evolution of the reagents as well as the reaction product. These data allowed us to extract the formation rate of the products formed during ozonolysis processes. Based on these results, reaction mechanisms of ozonolysis of ketolimonene, myrtenal and limononaldehyde are proposed
Gretton, Virginia Ann. "Kinetic and mechanistic study of aquated forms of platinium (II) complexes with nucleic acid derivatives." Thesis, University of York, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359254.
Повний текст джерелаAppleton, Amanda Jane. "A kinetic and mechanistic study of the liquid-phase reactions of ester-substituted alkylperoxyl radicals." Thesis, University of York, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265560.
Повний текст джерелаGravestock, Thomas John. "A kinetic and spectroscopic study of chemistry relating to the atmospheric role of iodine species." Thesis, University of Leeds, 2006. http://etheses.whiterose.ac.uk/235/.
Повний текст джерелаTrummer, Martin. "The effect of solid state inclusions on the reactivity of UO2 : A kinetic and mechanistic study." Doctoral thesis, KTH, Kärnkemi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-33070.
Повний текст джерелаQC 20110511
Dey, Benu Kumar. "A study on metal ion complexation with a macrocyclic ligand : a thermodynamic, kinetic, and mechanistic investigation." Title page, contents and abstract only, 1991. http://web4.library.adelaide.edu.au/theses/09SM/09smd528.pdf.
Повний текст джерелаNilsson, Kristina. "Oxidative dissolution of doped UO2 and H2O2 reactivity towards oxide surfaces : A kinetic and mechanistic study." Licentiate thesis, KTH, Tillämpad fysikalisk kemi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-145691.
Повний текст джерелаQC 20140527
Ahlford, Katrin. "Asymmetric transfer hydrogenation of ketones : Catalyst development and mechanistic investigation." Doctoral thesis, Stockholms universitet, Institutionen för organisk kemi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-55412.
Повний текст джерелаAt the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 4: In press.
Pillay, Kriveshini. "A kinetic and mechanistic study on the oxidation of chromium oxide in pure chemicals and in ferrometallurgical slags." Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/5415.
Повний текст джерелаChromium can exist in a number of oxidation states but the environmentally stable forms are trivalent (Cr(III)) and hexavalent (Cr(VI)) chromium. These two forms are noted for their different degrees of toxicity and mobility. Hexavalent chromium is more toxic and mobile and has been responsible for a number of illnesses in humans (Sheehan et. al., 1991). Elemental chromium and its compounds have a variety of uses in the industrial sector. The ferrometallurgical industry in particular makes use of chromium since this element imparts properties such as hardness and strenght to stainless steel. However, this industry also produces slags that contain residual amounts of chromium oxide (Cr[2]O[3]) along with other constituents such as calcium oxide (CaO). Thermodynamic data from the literature, has shown that Cr[2]O[3] can undergo oxidation at ambient temperature when in contact with CaO and atmospheric oxygen (Kilau and Shah, 1984; Hattori et al., 1978). Furthermore, the oxidation of Cr[2]O[3] in the presence of Ca(OH)[2] has also been observed at ambient temperature (Petersen, 1998).
劉新權 and Sing-quan Lew. "Kinetic and mechanistic study of reactions of hydroxy, methoxy, methylthio, methylseleno and amino derivatives of some heterocyclicand homocyclic polyenes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1991. http://hub.hku.hk/bib/B31232322.
Повний текст джерелаYang, Chunhua. "Synthesis and Kinetic Mechanism Study of Phosphonopeptide as a Dead-End Inhibitor of cAMP-Dependent Protein Kinase." Thesis, University of North Texas, 1991. https://digital.library.unt.edu/ark:/67531/metadc500671/.
Повний текст джерелаThinon, Olivier. "CO conversion over dual-site catalysts by the Water-Gas Shift Reaction for fuel cell applications : comparative mechanistic and kinetic study of gold and platinum supported catalysts." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10187.
Повний текст джерелаThe Fuel Cells are promising solution to reduce the air pollution. One of the cost-efficient alternatives is to produce hydrogen from another fuel such as methane or bio-ethanol. A hydrogen fuel processor consists in generating a hydrogen-rich mixture and reducing the carbon monoxide content, as PEM fuel cells are very low CO tolerance. One of these units is the water-gas shift reactor, which converts CO into CO2 by the reaction with water and provides additional hydrogen. Catalysts based on a metal (Pt, Pd, Ru, Rh, Au, Cu) supported on an oxide (CeO2, TiO2, ZrO2, Fe2O3, CeO2/Al2O3) were compared for the WGS reaction in the same conditions and in the presence of CO2 and H2. A kinetic study was conducted on catalysts Pt/CeO2, Au/CeO2, Pt/TiO2 and Au/TiO2. A power law rate model was used to determine apparent activation energies and reaction orders. A dual-site reaction mechanism was proposed to explain the different activities between the four catalysts. The sorption parameters of H2O and CO2 on the supports was quantitatively determined from temperature-programmed desorption experiments
Buitrago, Elina. "Transition metal-catalyzed reduction of carbonyl compounds : Fe, Ru and Rh complexes as powerful hydride mediators." Doctoral thesis, Stockholms universitet, Institutionen för organisk kemi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-75795.
Повний текст джерелаAt the time of doctoral defense, the following paper was unpublished and had a status as follows: Paper 2: Manuscript.
Lee, Lok Yan. "Study of the photodegradation and photostability of anti-cancer drugs in different media towards the development of both new actinometers and liquid formulations." Thesis, De Montfort University, 2016. http://hdl.handle.net/2086/12188.
Повний текст джерелаChristmann, Julien. "Photochimie moléculaire des processus de photopolymérisation : de l'étude mécanistique à la modélisation cinétique." Thesis, Mulhouse, 2017. http://www.theses.fr/2017MULH0698.
Повний текст джерелаThis thesis deals with the mechanistic study of complex photoinitiating systems and the kinetic modeling of the photopolymerization process. In a first time, the photochemical mechanism of a system combining [Ru(bpy)3]2+ and RAFT agents for the initiation and control of a radical process has been studied. An energy transfer has been clearly demonstrated, contradicting the electron transfer mechanism generally proposed. A dual bicyclic three-component photoinitiating system ITX/IOD+/RSH has been considered for the synthesis of organic-inorganic hybrid materials. Under light exposure, this system produces simultaneously radicals and protons, enabling the initiation of a radical polymerization and a sol-gel process, respectively. In a second time, interdependence between photopolymerization kinetics and evolution of the medium’s properties has been studied, through developing a kinetic model for the simulation of the whole photopolymerization process. Photoinitiating systems of growing complexity have been included in order to study specificities of their kinetics. A type-I system has shown major termination modes and their evolution during the polymer synthesis, while the non-negligible role of back electron transfer has been highlighted for type-II photoinitiating systems. Role of terminating agent of a photoproduct based on a cationic dye, as well as some specificities of photocyclic three-component systems, have been finally studied with the model
Blythe, P. John. "Enhanced droplet nucleation in miniemulsion polymerization : a kinetic and mechanistic study /." Diss., 1998. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:9919146.
Повний текст джерелаHong, Jinmo. "Effects of agitation in emulsion polymerization---Kinetic and mechanistic study of coagulum." 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3341183.
Повний текст джерелаChen, Li-Yang, and 陳立揚. "Ab initio mechanistic and kinetic study of Clx (x=1,2) reactions with HCOOH and HOCO." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/nqq429.
Повний текст джерела國立交通大學
應用化學系碩博士班
103
The photochemical reactions between chlorine molecules and formic acid are chain reactions which proceed at least partially via chlorofomic acid and the final products detected experementally are carbon dioxide and hydrogen chloride. In order to understand the mechanism of the chain reaction, the Gaussian code was utilized to simulate the reactions of Clx (x=1, 2) with HCOOH and HOCO at the CCSD(T)/aug-cc-pVTZ//BHandHLYP/6-311++G(3df,2p) level of theory. The reactions involved are HCOOH + Cl¬2, HOCO + Cl2, HCOOH + Cl and HOCO + Cl. The HCOOH + Cl2 reaction forms HCOOCl + HCl, with a barrier height of 52.2 kcal mol-1. The rate constant predicted with the transition-state theory is 9.30x10E(-21)T^(2.07)exp(-24404/T) cm3 molecule-1 s-1 in the temperature range from 100 to 2000 K. In the HOCO + Cl2 reaction, HCl + CO2 + Cl are produced via a chlorine atom with a statble complex of chloroformic acid, which fragment with a barrier of 5.3 kcal mol-1. The rate constant predicted with the transition-state theory is 1.73x10E(-17)T^(1.55)exp(893/T) cm3 molecule-1 s-1 in the temperature range from 298 to 2000 K. The hydrogen abstraction from HCOOH by Cl atom is considered as the key process in the chain reaction. In this reaction channel, the barrier height for formation of HOCO + HCl was found to be 2.1 kcal mol-1 and the predicted rate constant is 1.7x10E(-13) cm3 molecule-1 s-1 at 298 K, which is in good agreement with an experimental value of 1.8x10E(-13) cm3 molecule-1 s-1. In the HOCO + Cl reaction, the Cl atom can form a stable complex(ClCOOH) with HOCO, which lies -79.7 kcal mol-1 relative to the reactants; the complex decomposed readily into HCl + CO2 via a transition state with a barrier of 23.4 kcal mol-1. The predicted rate constant is 4.1x10E(-11) cm3 molecule-1 s-1 at 298 K, which is in good agreement with an experimental value of 4.8x10E(-11) cm3 molecule-1 s-1.
Ly, Hoa D. "A detailed kinetic and mechanistic study of a retaining a[alpha]-1,4-galactosyltransferase from Neisseria meningitidis." Thesis, 2002. http://hdl.handle.net/2429/13537.
Повний текст джерелаRim, Guanhe. "Coupled Kinetic and Mechanistic Study of Carbonation of Silicate Materials with Tailored Transport Behaviors for CO2 Utilization." Thesis, 2020. https://doi.org/10.7916/d8-dkqh-fz87.
Повний текст джерелаStolle, Achim [Verfasser]. "Study on the pyrolysis behavior of some monoterpenes and monoterpenoids : a mechanistic and kinetic overview / von Achim Stolle." 2008. http://d-nb.info/992456029/34.
Повний текст джерелаNikolayenko, Varvara I. "A kinetic and mechanistic study of dinuclear platinum (II) complexes with bis-(4'-terpyridyl)-a,w-alkyldiol ligands." Thesis, 2012. http://hdl.handle.net/10413/9224.
Повний текст джерелаThesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2012.
Shaira, Aishath. "A kinetic and mechanistic study into the substition behaviour of Plantinum (II) Polypyridyl complexes with a series of Azole Ligands." Thesis, 2010. http://hdl.handle.net/10413/8864.
Повний текст джерелаTheses (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2010.
Gómez, Martín Juan Carlos [Verfasser]. "Studie zur Spektroskopie, Reaktionskinetik und zum Mechanismus der in der Atmosphäre relevanten J2-O3-Photochemie = Spectroscopic, kinetic and mechanistic studies of atmospherically relevant I2, O3 photochemistry / von Juan Carlos Gómez Martín." 2006. http://d-nb.info/982121849/34.
Повний текст джерелаZhao, Chunli. "Operando spectroscopic and kinetic study of the selective oxidation of propylene to acrolein over well-defined supported vanadium oxide catalysts." 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3285758.
Повний текст джерелаChing-Shuenn, Yang, and 楊慶順. "Kinetic and Mechanistic Study for the Reaction of Carbonylation , Transpositional Isomerization,and Carbon Monoxide Deinsertion of .alpha.-Ketoacyl Platinum(II) Complexes." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/19620625776679617368.
Повний текст джерелаSchumacher, Birgit [Verfasser]. "Investigation of the CO oxidation on highly disperse Au-TiO2 catalysts in H2-rich and H2-free atmosphere : a kinetic and mechanistic study / Birgit Schumacher." 2005. http://d-nb.info/1000525309/34.
Повний текст джерела